1
|
Alsbach CME, Seijmonsbergen AC, Hoorn C. Geodiversity in the Amazon drainage basin. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2024; 382:20230065. [PMID: 38342214 PMCID: PMC10875704 DOI: 10.1098/rsta.2023.0065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Accepted: 12/12/2023] [Indexed: 02/13/2024]
Abstract
The Amazon is the largest drainage basin on Earth and contains a wide variety of abiotic landscape features. In spite of this, the geodiversity in this basin has not yet been objectively evaluated. We address this knowledge gap by combining a meta-analysis of an existing global geodiversity map and its components with a systematic literature review, to identify the key characteristics of geodiversity in the Amazon drainage basin (ADB). We also evaluate how these global geodiversity component maps, that are based on the geology, geomorphology, soils and hydrology, could be refined to better reflect geodiversity in the basin. Our review shows that geology-through lithological diversity and geological structures-and hydrology-through hydrological processes that influence geomorphology and soil diversity-are the main determinants of geodiversity. Based on these features, the ADB can be subdivided into three principal regions: (i) the Andean orogenic belt and western Amazon, (ii) the cratons and eastern Amazon, and (iii) the Solimões-Amazon river system. Additional methods to map geomorphological and hydrological diversity have been identified. Future research should focus on investigating the relationship between the geodiversity components and assess their relationship with biodiversity. Such knowledge can enhance conservation plans for the ADB. This article is part of the Theo Murphy meeting issue 'Geodiversity for science and society'.
Collapse
Affiliation(s)
- Cécile M. E. Alsbach
- Institute for Biodiversity and Ecosystem Dynamics (IBED), University of Amsterdam, PO Box 94240, 1090GE, Amsterdam, The Netherlands
| | - Arie C. Seijmonsbergen
- Institute for Biodiversity and Ecosystem Dynamics (IBED), University of Amsterdam, PO Box 94240, 1090GE, Amsterdam, The Netherlands
| | - Carina Hoorn
- Institute for Biodiversity and Ecosystem Dynamics (IBED), University of Amsterdam, PO Box 94240, 1090GE, Amsterdam, The Netherlands
| |
Collapse
|
2
|
Hayes WM, O'Shea BJ, Pierre MA, Wilson A, Bicknell JE. Bird communities across different levels of human settlement: A comparative analysis from two northern Amazonian ecoregions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 903:166535. [PMID: 37634729 DOI: 10.1016/j.scitotenv.2023.166535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 08/08/2023] [Accepted: 08/22/2023] [Indexed: 08/29/2023]
Abstract
Urban ecosystems are increasingly dominating landscapes globally, so it is critical to understand the effects of human settlements on biodiversity. Bird communities are effective indicators because they are impacted by the size and expansion of human settlements, exemplified by changes in their habitat use, breeding and foraging behaviours, as well as patterns of richness and abundance. Existing studies on bird community responses to human settlements have mainly focused on single ecoregions and large cities, leaving a gap in comparative research on how differently sized human settlements affect bird communities across various ecoregions. To address this gap, we examine species richness, bird abundances and community composition in human settlements, which exhibit variable sizes, populations, landscape configurations, and overall intensity of settlement in two tropical ecoregions in Guyana, Amazonia: forest and savannah. In each ecoregion we explored how different groupings of urban tolerance in birds responded to human settlements of differing population size and building densities. Overall, we found significant differences in bird communities across the varying levels of human settlement intensity in both ecoregions, with greater differences in bird community composition in the forest ecoregion than the savannah region. In both ecoregions, species richness and abundance were highest at the medium level of settlement of human settlement. Our findings suggest that bird tolerance to human settlements varies based on ecoregion and site-level factors. In the savannah, built features may be benefitting birds from all urban tolerance levels, but they have a negative impact on less urban-tolerant species in the forest ecoregion. Our comparative analysis reveals for the first time that the impact of human settlements on avian communities in northern Amazonia varies among ecoregions, indicating that species evolved to live in a savannah may be more tolerant to human settlements than those more evolved to a forest system.
Collapse
Affiliation(s)
- William M Hayes
- Durrell Institute of Conservation and Ecology (DICE), School of Anthropology and Conservation, University of Kent, Canterbury, Kent, CT2 7NR, UK.
| | - Brian J O'Shea
- North Carolina Museum of Natural Sciences, 11 W Jones St, Raleigh, NC 27601, United States
| | - Meshach A Pierre
- Tropical Conservation and Development Program, Center for Latin American Studies, University of Florida, United States
| | - Asaph Wilson
- South Rupununi Conservation Society, Shulinab, Upper Takutu-Upper Essequibo, Guyana
| | - Jake E Bicknell
- Durrell Institute of Conservation and Ecology (DICE), School of Anthropology and Conservation, University of Kent, Canterbury, Kent, CT2 7NR, UK
| |
Collapse
|
3
|
Rajtar NN, Kielsmeier-Cook JC, Held BW, Toapanta-Alban CE, Ordonez ME, Barnes CW, Blanchette RA. Diverse Xylaria in the Ecuadorian Amazon and their mode of wood degradation. BOTANICAL STUDIES 2023; 64:30. [PMID: 37878199 PMCID: PMC10600087 DOI: 10.1186/s40529-023-00403-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 10/13/2023] [Indexed: 10/26/2023]
Abstract
BACKGROUND Xylaria is a diverse and ecologically important genus in the Ascomycota. This paper describes the xylariaceous fungi present in an Ecuadorian Amazon Rainforest and investigates the decay potential of selected Xylaria species. Fungi were collected at Yasuní National Park, Ecuador during two collection trips to a single hectare plot divided into a 10-m by 10-m grid, providing 121 collection points. All Xylaria fruiting bodies found within a 1.2-m radius of each grid point were collected. Dried fruiting bodies were used for culturing and the internal transcribed spacer region was sequenced to identify Xylaria samples to species level. Agar microcosms were used to assess the decay potential of three selected species, two unknown species referred to as Xylaria 1 and Xylaria 2 and Xylaria curta, on four different types of wood from trees growing in Ecuador including balsa (Ochroma pyramidale), melina (Gmelina arborea), saman (Samanea saman), and moral (Chlorophora tinctoria). ANOVA and post-hoc comparisons were used to test for differences in biomass lost between wood blocks inoculated with Xylaria and uninoculated control blocks. Scanning electron micrographs of transverse sections of each wood and assay fungus were used to assess the type of degradation present. RESULTS 210 Xylaria collections were sequenced, with 106 collections belonging to 60 taxa that were unknown species, all with less than 97% match to NCBI reference sequences. Xylaria with sequence matches of 97% or greater included X. aff. comosa (28 isolates), X. cuneata (9 isolates) X. curta and X. oligotoma (7 isolates), and X. apiculta (6 isolates)., All Xylaria species tested were able to cause type 1 or type 2 soft rot degradation in the four wood types and significant biomass loss was observed compared to the uninoculated controls. Balsa and melina woods had the greatest amount of biomass loss, with as much as 60% and 25% lost, respectively, compared to the controls. CONCLUSIONS Xylaria species were found in extraordinary abundance in the Ecuadorian rainforest studied. Our study demonstrated that the Xylaria species tested can cause a soft rot type of wood decay and with the significant amount of biomass loss that occurred within a short incubation time, it indicates these fungi likely play a significant role in nutrient cycling in the Amazonian rainforest.
Collapse
Affiliation(s)
- Nickolas N Rajtar
- Department of Plant Pathology, University of Minnesota, St. Paul, MN, 55108, USA.
| | | | - Benjamin W Held
- Department of Plant Pathology, University of Minnesota, St. Paul, MN, 55108, USA
| | | | - Maria E Ordonez
- QCAM Fungarium, Pontificia Universidad Católica del Ecuador, Quito, Ecuador
- Department of Microbiology and Plant Pathology, University of California, Riverside, 92521, USA
| | - Charles W Barnes
- Forest Health Protection-Region 5, USDA Forest Service, San Bernardino, CA, 92408, USA
| | - Robert A Blanchette
- Department of Plant Pathology, University of Minnesota, St. Paul, MN, 55108, USA
| |
Collapse
|
4
|
López-Tobar R, Herrera-Feijoo RJ, Mateo RG, García-Robredo F, Torres B. Botanical Collection Patterns and Conservation Categories of the Most Traded Timber Species from the Ecuadorian Amazon: The Role of Protected Areas. PLANTS (BASEL, SWITZERLAND) 2023; 12:3327. [PMID: 37765489 PMCID: PMC10536464 DOI: 10.3390/plants12183327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 09/05/2023] [Accepted: 09/18/2023] [Indexed: 09/29/2023]
Abstract
The Ecuadorian Amazon is home to a rich biodiversity of woody plant species. Nonetheless, their conservation remains difficult, as some areas remain poorly explored and lack georeferenced records. Therefore, the current study aims predominantly to analyze the collection patterns of timber species in the Amazon lowlands of Ecuador and to evaluate the conservation coverage of these species in protected areas. Furthermore, we try to determine the conservation category of the species according to the criteria of the IUCN Red List. We identified that one third of the timber species in the study area was concentrated in three provinces due to historical botanical expeditions. However, a worrying 22.0% of the species had less than five records of presence, and 29.9% had less than ten records, indicating a possible underestimation of their presence. In addition, almost half of the species evaluated were unprotected, exposing them to deforestation risks and threats. To improve knowledge and conservation of forest biodiversity in the Ecuadorian Amazon, it is recommended to perform new botanical samplings in little-explored areas and digitize data in national herbaria. It is critical to implement automated assessments of the conservation status of species with insufficient data. In addition, it is suggested to use species distribution models to identify optimal areas for forest restoration initiatives. Effective communication of results and collaboration between scientists, governments, and local communities are key to the protection and sustainable management of forest biodiversity in the Amazon region.
Collapse
Affiliation(s)
- Rolando López-Tobar
- Facultad de Ciencias Agrarias y Forestales, Universidad Técnica Estatal de Quevedo (UTEQ), Quevedo Av. Quito km, 1 1/2 Vía a Santo Domingo de los Tsáchilas, Quevedo 120550, Ecuador;
- Escuela Técnica Superior de Ingeniería de Montes, Forestal y del Medio Natural, Universidad Politécnica de Madrid, 28040 Madrid, Spain
- Unidad de Posgrado, Universidad Técnica Estatal de Quevedo (UTEQ), Quevedo Av. Quito km, 1 1/2 Vía a Santo Domingo de los Tsáchilas, Quevedo 120550, Ecuador
| | - Robinson J. Herrera-Feijoo
- Facultad de Ciencias Agrarias y Forestales, Universidad Técnica Estatal de Quevedo (UTEQ), Quevedo Av. Quito km, 1 1/2 Vía a Santo Domingo de los Tsáchilas, Quevedo 120550, Ecuador;
- Unidad de Posgrado, Universidad Técnica Estatal de Quevedo (UTEQ), Quevedo Av. Quito km, 1 1/2 Vía a Santo Domingo de los Tsáchilas, Quevedo 120550, Ecuador
- Escuela de Doctorado, Centro de Estudios de Posgrado, Universidad Autónoma de Madrid, C/Francisco Tomás y Valiente, nº 2, 28049 Madrid, Spain
- Departamento de Biología (Botánica), Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain;
| | - Rubén G. Mateo
- Departamento de Biología (Botánica), Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain;
- Centro de Investigación en Biodiversidad y Cambio Global (CIBC-UAM), Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Fernando García-Robredo
- Departamento de Ingeniería y Gestión Forestal y Ambiental, Escuela Técnica Superior de Ingeniería de Montes, Forestal y del Medio Natural, Universidad Politécnica de Madrid, C/José Antonio Novais 10, 28040 Madrid, Spain;
| | - Bolier Torres
- Facultad de Ciencia de la Vida, Universidad Estatal Amazónica (UEA), Puyo 160101, Ecuador;
- Ochroma Consulting and Services, Puerto Napo, Tena 150150, Ecuador
| |
Collapse
|
5
|
Peñaherrera‐R. P, Cisneros‐Heredia DF. A new species of spider of the genus Sadala Simon, 1880 (Araneae, Sparassidae) from the Yasuni Biosphere Reserve, Amazonian lowlands of Ecuador. Ecol Evol 2023; 13:ECE310242. [PMID: 37424933 PMCID: PMC10325932 DOI: 10.1002/ece3.10242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 06/10/2023] [Accepted: 06/13/2023] [Indexed: 07/11/2023] Open
Abstract
We describe a new species of giant crab spider of the genus Sadala Simon, 1880 collected in Lowland Evergreen rainforests at the Tiputini Biodiversity Station, Yasuni Biosphere Reserve, Amazonian Ecuador. This new species corresponds to the first record of the genus from Ecuador. Females of the new species of Sadala are similar to S. punicea and S. nanay, by having the epigyne with a median septum diamond-shaped posteriorly. The new species is easily distinguished from S. punicea and S. nanay by having relatively straight anterior lateral margins of the median septum. This study increases to 10 the number of described species of Sadala.
Collapse
Affiliation(s)
- Pedro Peñaherrera‐R.
- Colegio de Ciencias Biológicas y Ambientales COCIBA, Instituto de Biodiversidad Tropical IBIOTROP, Laboratorio de Zoología Terrestre, Museo de ZoologíaUniversidad San Francisco de Quito USFQQuitoEcuador
| | - Diego F. Cisneros‐Heredia
- Colegio de Ciencias Biológicas y Ambientales COCIBA, Instituto de Biodiversidad Tropical IBIOTROP, Laboratorio de Zoología Terrestre, Museo de ZoologíaUniversidad San Francisco de Quito USFQQuitoEcuador
- Tiputini Biodiversity StationUniversidad San Francisco de Quito USFQQuitoEcuador
- Instituto Nacional de Biodiversidad INABIOQuitoEcuador
| |
Collapse
|
6
|
Arévalo-Granda V, Hickey-Darquea A, Prado-Vivar B, Zapata S, Duchicela J, van ‘t Hof P. Exploring the mycobiome and arbuscular mycorrhizal fungi associated with the rizosphere of the genus Inga in the pristine Ecuadorian Amazon. FRONTIERS IN FUNGAL BIOLOGY 2023; 4:1086194. [PMID: 37746118 PMCID: PMC10512398 DOI: 10.3389/ffunb.2023.1086194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 02/20/2023] [Indexed: 09/26/2023]
Abstract
This study explored the composition of the mycobiome in the rhizosphere of Inga seedlings in two different but neighboring forest ecosystems in the undisturbed tropical Amazon rainforest at the Tiputini Biodiversity Station in Ecuador. In terra firme plots, which were situated higher up and therefore typically outside of the influence of river floods, and in várzea plots, the lower part of the forest located near the riverbanks and therefore seasonally flooded, tree seedlings of the genus Inga were randomly collected and measured, and the rhizosphere soils surrounding the root systems was collected. Members of the Fabaceae family and the genus Inga were highly abundant in both forest ecosystems. Inga sp. seedlings collected in terra firme showed a lower shoot to root ratio compared to seedlings that were collected in várzea, suggesting that Inga seedlings which germinated in várzea soils could invest more resources in vegetative growth with shorter roots. Results of the physical-chemical properties of soil samples indicated higher proportions of N, Mo, and V in terra firme soils, whereas várzea soils present higher concentrations of all other macro- and micronutrients, which confirmed the nutrient deposition effect of seasonal flooding by the nearby river. ITS metabarcoding was used to explore the mycobiome associated with roots of the genus Inga. Bioinformatic analysis was performed using Qiime 2 to calculate the alpha and beta diversity, species taxonomy and the differential abundance of fungi and arbuscular mycorrhizal fungi. The fungal community represented 75% of the total ITS ASVs, and although present in all samples, the subphylum Glomeromycotina represented 1.42% of all ITS ASVs with annotations to 13 distinct families, including Glomeraceae (72,23%), Gigasporaceae (0,57%), Acaulosporaceae (0,49%). AMF spores of these three AMF families were morphologically identified by microscopy. Results of this study indicate that AMF surround the rhizosphere of Inga seedlings in relatively low proportions compared to other fungal groups but present in both terra firme and várzea Neotropical ecosystems.
Collapse
Affiliation(s)
- Valentina Arévalo-Granda
- Department of Biological and Environmental Sciences - COCIBA, Universidad San Francisco de Quito-USFQ, Quito, Ecuador
- Institute of Microbiology, Universidad San Francisco de Quito-USFQ, Quito, Ecuador
| | - Aileen Hickey-Darquea
- Department of Biological and Environmental Sciences - COCIBA, Universidad San Francisco de Quito-USFQ, Quito, Ecuador
| | - Belén Prado-Vivar
- Institute of Microbiology, Universidad San Francisco de Quito-USFQ, Quito, Ecuador
| | - Sonia Zapata
- Department of Biological and Environmental Sciences - COCIBA, Universidad San Francisco de Quito-USFQ, Quito, Ecuador
- Institute of Microbiology, Universidad San Francisco de Quito-USFQ, Quito, Ecuador
- Tiputini Biodiversity Station, Department of Biological and Environmental Sciences - COCIBA, Universidad San Francisco de Quito-USFQ, Quito, Ecuador
| | - Jéssica Duchicela
- Department of Life Sciences and Agriculture, Universidad de las Fuerzas Armadas-ESPE, Sangolquí, Ecuador
| | - Pieter van ‘t Hof
- Department of Biological and Environmental Sciences - COCIBA, Universidad San Francisco de Quito-USFQ, Quito, Ecuador
- Institute of Microbiology, Universidad San Francisco de Quito-USFQ, Quito, Ecuador
- Tiputini Biodiversity Station, Department of Biological and Environmental Sciences - COCIBA, Universidad San Francisco de Quito-USFQ, Quito, Ecuador
| |
Collapse
|
7
|
Macas-Pogo P, Mejía Valenzuela E, Arévalo-Serrano G. Activity pattern and predatory behaviour of the ocelot (Leopardus pardalis) (Carnivora, Felidae) in mineral licks of the Yasuni National Park, Ecuador. NEOTROPICAL BIOLOGY AND CONSERVATION 2023. [DOI: 10.3897/neotropical.18.e95027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
The ocelot, Leopardus pardalis, is one of the opportunistic predators of the tropical forests that includes birds, small and medium mammals, amphibians and reptiles in its diet. Aiming to observe its behaviour within its natural habitat, 10 cameras were installed in 10 mineral licks within the Yasuni National Park (Ecuador). Both images and videos of ocelot predation events were collected. Hence, the frequency of activity of this specie was determined with the register of captures obtained. Three events are described: the first one, an image of an ocelot stalking a Mazama deer was taken, while in the second scene, a video of stalking an anuran was obtained and in the third event, a video of the ocelot capturing a flying bat was recorded. The use of camera traps allowed us to collect valuable behavioural information about this feline and provide evidence of the importance of the mineral licks for this and other wild species.
Collapse
|
8
|
Mosquera JD, Zapata S, Spinelli G, Gualapuro M, León R, Augot D. An updated list of the Culicoides (Diptera, Ceratopogonidae) fauna from Ecuador. Parasite 2022; 29:63. [PMID: 36562430 PMCID: PMC9879131 DOI: 10.1051/parasite/2022061] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Accepted: 12/02/2022] [Indexed: 12/24/2022] Open
Abstract
An updated list of biting midges of the genus Culicoides inhabiting Ecuador is provided. Entomological investigations were carried out from July 2010 to May 2019 using CDC light traps in three Ecuadorian regions (Amazon basin, Andean (foothills and highlands) and Pacific Coast). A total of 12,073 Culicoides specimens from seven subgenera and nine species groups were collected. More species and higher variation were found in the Amazon basin than in either of the Andes regions or coastal sites. A total of 53 species were identified. Of these, 15 are herein reported as new species records for Ecuador: Culicoides acotylus Lutz, C. aitkeni Wirth & Blanton, C. benarrochi Ortiz & Mirsa, C. carvalhoi Wirth & Blanton, C. freitasi Wirth & Blanton, C. ginesi Ortíz, C. lopesi Barretto, C. lyrinotatus Wirth & Blanton, C. profundus Santarém, Felippe-Bauer & Trindade, C. pseudoreticulatus Santarém, Felippe-Bauer & Castellón, C. quasiparaensis Clastrier, C. vernoni Wirth & Blanton, C. youngi Wirth & Barreto and two new species. Our results show that the updated list of the Ecuadorian Culicoides fauna comprises 70 species. This inventory highlights the presence of species that have been incriminated as vectors of disease elsewhere in animals and humans, mainly C. insignis and C. paraensis.
Collapse
Affiliation(s)
- Juan D. Mosquera
-
Instituto de Microbiología, Colegio de Ciencias Biológicas y Ambientales, Universidad San Francisco de Quito, Diego de Robles and Pampite 170901 Quito Ecuador
| | - Sonia Zapata
-
Instituto de Microbiología, Colegio de Ciencias Biológicas y Ambientales, Universidad San Francisco de Quito, Diego de Robles and Pampite 170901 Quito Ecuador
,
Estación de Biodiversidad Tiputini, Colegio de Ciencias Biológicas y Ambientales, Universidad San Francisco de Quito USFQ Quito Ecuador
,Corresponding authors: ;
| | - Gustavo Spinelli
-
División Entomología, Museo de La Plata, Paseo del Bosque 1900 La Plata Argentina
,
Instituto de Limnología “Dr. Raúl A. Ringuelet”, Consejo Nacional de Investigaciones Científicas y Técnicas de la Argentina, Universidad Nacional de La Plata Boulevard 120 y 62 1900 La Plata Buenos Aires Argentina
| | - Moises Gualapuro
-
Instituto de Microbiología, Colegio de Ciencias Biológicas y Ambientales, Universidad San Francisco de Quito, Diego de Robles and Pampite 170901 Quito Ecuador
| | - Renato León
-
Instituto de Microbiología, Colegio de Ciencias Biológicas y Ambientales, Universidad San Francisco de Quito, Diego de Robles and Pampite 170901 Quito Ecuador
| | - Denis Augot
-
UscVecpar, ANSES-LSA-EA7510, SFR Cap Santé, Université de Reims Champagne-Ardenne 51 rue Cognacq-Jay 51096 Reims Cedex France
,
Anses, INRAe, ENVA, UMR-BIPAR, Laboratoire de Santé Animale 14 rue Pierre et Marie Curie 94701 Maisons-Alfort Cedex France
,Corresponding authors: ;
| |
Collapse
|
9
|
Villamarin-Cortez S, Hankin L, Coronado S, Macdonald J, Noriega JA. Diversity and distribution patterns of Ecuador’s dung beetles (Coleoptera: Scarabaeinae). Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.1008477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
IntroductionEcuador harbors an astounding number of ecosystems and species. However, anthropogenic land-use changes are the primary drivers of biodiversity loss in major taxonomic groups, especially insects. Among them, the Scarabaeinae subfamily containing dung beetles, is an excellent taxon for studying taxonomic and functional diversity, as they are relatively stable taxonomically and have a wide variety of ecological services. Their distribution is mainly influenced by biogeography and climate as their main ecological and environmental factors will allow us to quantify what aspects of diversity are being impacted under different circumstances and at different scales.MethodsTo understand the main of dung beetle distribution drivers, we analyzed a museum database from the National Institute of Biodiversity, Ecuador (INABIO) of over 5000 dung beetle specimens with 122 species collected throughout the country, we addressed the following questions: i) How does tribe distribution vary across climatic and elevational gradients? and ii) How does functional and taxonomic beta diversity vary across spatial scales? To address them, we focused on three main tribes: Canthonini, Coprini, and Phanaeini. We constructed GLM’s and niche-based models to estimate Ecuador’s distributions based on climate variables to explore potential predictor variables, using tree classification models, along with taxonomic and functional beta diversity across scales.ResultsThe main variables influencing dung beetle distribution were elevation, and precipitation. The Phanaeini niche model is significantly better at predicting dung beetle presence throughout Ecuador than Canthonini and Coprini. We found high turnover in functional groups at larger scales, suggesting that dung beetles show high levels of habitat specialization, which associates to our findings where taxonomic beta diversity was higher in the Amazon basin compared to the coastal region. This may be due to the higher rate of dung production in Amazonia. Our findings also suggest that dung beetles are not found in areas above 2000m, mainly because dung beetles are well adapted to warmer and moist climatic regions. Precipitation and elevation are consistently essential variables for predicting Canthonini and Coprini presence, while temperature explains Phanaeini presence. Low levels of species turnover at the regional scale may be because the total species richness in Ecuador is different, where divergence in taxonomic beta diversity between the two regions is an artifact of such differences in richness in Amazonia versus the coast, the distinction is also due to nonrandomly low taxonomic beta diversity levels in the coastal region.ConclusionsOur results provide an essential framework for evaluating potential dung beetle habitat and diversity at different scales; therefore, by identifying dung beetles’ diversity, combined with considerations of habitat fragmentation, human land-use alteration, and climate change, will be an important next step to inform better and prioritize dung beetle conservation efforts in other countries.
Collapse
|
10
|
Heijink BM, Mattijs QA, Valencia R, Philip AL, Piperno DR, McMichael CNH. Long‐term fire and vegetation change in northwestern Amazonia. Biotropica 2022; 55:197-209. [PMID: 37081906 PMCID: PMC10108220 DOI: 10.1111/btp.13175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 10/13/2022] [Accepted: 10/16/2022] [Indexed: 12/03/2022]
Abstract
Amazonian forest plots are used to quantify biodiversity and carbon sequestration, and provide the foundation for much of what is known about tropical ecology. Many plots are assumed to be undisturbed, but recent work suggests that past fire, forest openings, and cultivation created vegetation changes that have persisted for decades to centuries (ecological legacies). The Yasuní Forest Dynamics plot is one of the most biodiverse places on earth, yet its human history remains unknown. Here, we use charcoal and phytolith analysis to investigate the fire and vegetation history of the Yasuní forest plot, and compare results with nearby forest plots in Colombia (Amacayacu) and Peru (Medio Putumayo-Algodón [MPA]) to explore the spatial variability of past disturbances and ecological legacies in northwestern Amazonia. Three 14C dated charcoal fragments provided evidence for a modern (1956 CE) and a past fire event ca. 750 years ago at Yasuní, compared with fire ages of 1000-1600 years ago documented at Amacayacu and MPA. Small-scale disturbances and localized canopy openings also occurred in the Yasuní plot. Phytolith assemblages from Yasuní and Amacayacu showed more variability in past vegetation change than MPA. Low-intensity, non-continuous disturbances occurred at all three plots in the past, and our results highlight the variability of past human activities both in space and time in northwestern Amazonia. Our data also suggest that post-Columbian human disturbances from the Rubber Boom (AD 1850-1920) and subsequent oil exploration have likely left stronger ecological legacies than those left by pre-Columbian peoples in our studied regions.
Collapse
Affiliation(s)
- Britte M. Heijink
- Department of Ecosystem and Landscape Dynamics, Institute for Biodiversity and Ecosystem Dynamics University of Amsterdam Amsterdam The Netherlands
| | - Quinten A. Mattijs
- Department of Ecosystem and Landscape Dynamics, Institute for Biodiversity and Ecosystem Dynamics University of Amsterdam Amsterdam The Netherlands
| | - Renato Valencia
- Escuela de Ciencias Biológicas Pontificia Universidad Católica del Ecuador Quito Ecuador
| | - Annemarie L. Philip
- Department of Ecosystem and Landscape Dynamics, Institute for Biodiversity and Ecosystem Dynamics University of Amsterdam Amsterdam The Netherlands
| | - Dolores R. Piperno
- Department of Anthropology Smithsonian National Museum of Natural History Washington District of Columbia USA
- Smithsonian Tropical Research Institute Balboa Panama
| | - Crystal N. H. McMichael
- Department of Ecosystem and Landscape Dynamics, Institute for Biodiversity and Ecosystem Dynamics University of Amsterdam Amsterdam The Netherlands
| |
Collapse
|
11
|
Dietary data of a highly biodiverse anuran assemblage in the Ecuadorian Amazon. Data Brief 2022; 45:108720. [DOI: 10.1016/j.dib.2022.108720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/25/2022] [Accepted: 10/28/2022] [Indexed: 11/11/2022] Open
|
12
|
Ball JGC, Petrova K, Coomes DA, Flaxman S. Using deep convolutional neural networks to forecast spatial patterns of Amazonian deforestation. Methods Ecol Evol 2022. [DOI: 10.1111/2041-210x.13953] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- James G. C. Ball
- Department of Plant Sciences and Conservation Research Institute University of Cambridge Cambridge UK
| | | | - David A. Coomes
- Department of Plant Sciences and Conservation Research Institute University of Cambridge Cambridge UK
| | - Seth Flaxman
- Department of Computer Science University of Oxford Oxford UK
| |
Collapse
|
13
|
Berdugo MB, Gradstein SR, Guérot L, León‐Yánez S, Bendix J, Bader MY. Diversity patterns of epiphytic bryophytes across spatial scales: Species‐rich crowns and beta‐diverse trunks. Biotropica 2022. [DOI: 10.1111/btp.13113] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Monica B. Berdugo
- Ecological Plant Geography, Faculty of Geography University of Marburg Marburg Germany
| | - S. Robbert Gradstein
- Meise Botanic Garden Meise Belgium
- Muséum National d'Histoire Naturelle Institut de Systématique, Evolution, Biodiversité (UMR 7205) Paris France
| | - Louise Guérot
- Ecological Plant Geography, Faculty of Geography University of Marburg Marburg Germany
- Muséum National d'Histoire Naturelle Institut de Systématique, Evolution, Biodiversité (UMR 7205) Paris France
| | - Susana León‐Yánez
- Herbario QCA Escuela de Biología, Pontificia Universidad Católica del Ecuador Quito Ecuador
| | - Jörg Bendix
- Laboratory for Climatology and Remote Sensing, Faculty of Geography University of Marburg Marburg Germany
| | - Maaike Y. Bader
- Ecological Plant Geography, Faculty of Geography University of Marburg Marburg Germany
| |
Collapse
|
14
|
Santamaría-Aguilar D, Lagomarsino LP. New Species of Virola (Myristicaceae) from South America. PHYTOKEYS 2022; 197:81-148. [PMID: 36760671 PMCID: PMC9849048 DOI: 10.3897/phytokeys.197.81367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 04/30/2022] [Indexed: 06/18/2023]
Abstract
With about 70 species Virola, is the largest genus of Myristicaceae in the Neotropics, the genus ranked in the top ten genera of abundance across Amazonia. Ten new species are proposed in this striking genus, which are described based on morphology, and are illustrated. The new species were discovered thanks to herbarium specimens collected mainly in the 1980s and 1990s when field documentations were more active. The new species come from Colombia (V.calimensis sp. nov., V.cogolloi sp. nov., V.excisa sp. nov., V.tuckerae sp. nov.), Ecuador (V.alvaroperezii sp. nov., V.bombuscaroensis sp. nov., V.calimensis, V.excisa, V.yasuniana sp. nov.), Peru (V.aguarunana sp. nov., V.cumala sp. nov., V.excisa, V.parkeri sp. nov.), and Brazil (V.excisa, V.yasuniana). Additionally, a lectotype is designated for V.macrocarpa, a name used to identify some specimens of the new species here described, and V.kwatae is reported for the first time for Brazil. We provide a comparation table between the new species and the species that is morphologically close to it, a preliminary list of species for the genus, and notes of how the new species were treated in floras, checklists, or collections that need more study and herbarium specimens.
Collapse
Affiliation(s)
- Daniel Santamaría-Aguilar
- Shirley C. Tucker Herbarium, Department of Biological Sciences, Louisiana State University, 103 Life Sciences Building, Baton Rouge, Louisiana 70803-1705, USALouisiana State UniversityBaton RougeUnited States of America
- Missouri Botanical Garden, St. Louis, Missouri, USAMissouri Botanical GardenSt. LouisUnited States of America
| | - Laura P. Lagomarsino
- Shirley C. Tucker Herbarium, Department of Biological Sciences, Louisiana State University, 103 Life Sciences Building, Baton Rouge, Louisiana 70803-1705, USALouisiana State UniversityBaton RougeUnited States of America
| |
Collapse
|
15
|
Toapanta-Alban CE, Ordoñez ME, Blanchette RA. New Findings on the Biology and Ecology of the Ecuadorian Amazon Fungus Polyporus leprieurii var. yasuniensis. J Fungi (Basel) 2022; 8:jof8020203. [PMID: 35205957 PMCID: PMC8874993 DOI: 10.3390/jof8020203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 02/13/2022] [Accepted: 02/15/2022] [Indexed: 02/04/2023] Open
Abstract
Polyporus leprieurii var. yasuniensis is a prolific wood-decay fungus inhabiting the forest floor of one of the most biodiverse places on earth, the Yasuní National Park in Ecuador. Basidiocarps and aerial rhizomorphs are commonly found growing on woody debris distributed along the floor of this forest ecosystem. Because of the extraordinary abundance of this fungus in the tropical rainforest, we carried out investigations to better understand the biological and ecological aspects contributing to its prolific distribution. Data on growth inhibition in paired competition studies with sixteen fungal isolates exemplifies defense mechanisms used to defend its territory, including pseudosclerotial plates and the development of a melanized rhizomorphic mat. Results of biomass loss on eleven types of tropical wood in microcosm experiments demonstrated the broad decay capacity of the fungus. In and ex situ observations provided information on how long rhizomorphs can prevail in highly competitive ecosystems as well as stressful conditions in the laboratory. Finally, high concentrations of metal ions occur on rhizomorphs as compared to colonized wood. Sequestration of metal ions from the environment by the melanized rhizomorphs may offer protection against competitors. The development of melanized rhizomorphs is key to find and colonize new substrates and resist changing environmental conditions.
Collapse
Affiliation(s)
| | - María E. Ordoñez
- Fungarium QCAM, Escuela de Ciencias Biológicas, Facultad de Ciencias Exactas y Naturales, Pontificia Universidad Católica del Ecuador, Quito 170143, Ecuador;
| | - Robert A. Blanchette
- Department of Plant Pathology, University of Minnesota, St. Paul, MN 55108, USA;
| |
Collapse
|
16
|
Multitemporal Analysis as a Non-Invasive Technology Indicates a Rapid Change in Land Use in the Amazon: The Case of the ITT Oil Block. ENVIRONMENTS 2021. [DOI: 10.3390/environments8120139] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The Amazon Region of Ecuador (ARE) hosts a great variety of biodiversity and ecosystems. These hotspots are internationally recognized for presenting unique fauna and flora found nowhere else in the world. Within the ARE, there is the Yasuní National Park (YNP), a recognized Biosphere Reserve located in the sub-basins of various rivers. The study area is the “ITT Oil Block” (Ishpingo, Tambococha, and Tiputini), situated in the Province of Orellana and superimposed on the YNP. The block has an area of 179,449.53 ha. The main objective of the current study was to analyze the multi-temporality of land-use change in the ITT Oil Block of the ARE. In the methodological process, the PCI Geomatic and ARCGIS programs were used for the processing and classification of satellite images (Landsat 7 and 8). The changes in land use in the ITT Oil Block over the three periods (2001, 2014, and 2017) indicated that forest cover decreased by 24.23% in soils, while infrastructure and cultivation increased throughout the time period by 0.27% and 0.23%, respectively. The most significant land-use change rate in the ITT Oil Block in the period 2001–2017 are the categories of bare soil with 9.01% (10,640.82 ha) and cultivation with 7.27% (591.29 ha).
Collapse
|
17
|
Abstract
Ecuador has shown a growth in its scientific production since 2011, representing 85% of the total historical production. These investigations are reflected in scientific publications, which address world interest topics and serve as a link for the university, business, and society. This work aims to analyze the scientific production generated by Ecuador in the period of 1920–2020 using bibliometric methods to evaluate its intellectual structure and performance. The methodology applied in this study includes: (i) terms definition and search criteria; (ii) database selection, initial search, and document compilation; (iii) data extraction and software selection; and finally, (iv) analysis of results. The results show that scientific production has been consolidated in 30,205 documents, developed in 27 subject areas, in 13 languages under the contribution of 84 countries. This intellectual structure is in harmony with the global context when presenting research topics related to “Biology and regional climate change”, “Higher education and its various approaches”, “Technology and Computer Science”, “Medicine”, “Energy, food and water”, and ”Development and applications on the Web”. Topics framed in the Sustainable Development Goals (SDGs), sustainability, climate change, and others. This study contributes to the academic community, considering current re-search issues and global concerns, the collaboration between universities and countries that allow establishing future collaboration links.
Collapse
|
18
|
Székely P, Székely D, Ordóñez-Delgado L, Armijos-Ojeda D, Vörös J. Our unknown neighbor: A new species of rain frog of the genus Pristimantis (Amphibia: Anura: Strabomantidae) from the city of Loja, southern Ecuador. PLoS One 2021; 16:e0258454. [PMID: 34705824 PMCID: PMC8550592 DOI: 10.1371/journal.pone.0258454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 09/24/2021] [Indexed: 11/24/2022] Open
Abstract
We describe a new species of rain frog of the genus Pristimantis from the city of Loja, Southern Ecuador, based on an integrative taxonomy approach, combining molecular, morphological and bioacoustics data. Pristimantis lojanus sp. nov. is a medium sized species of the phylogenetically strongly supported P. phoxocephalus group, and its sister species is P. torresi. The new species can be easily distinguished from its closest congeners and morphologically similar species (that also have acuminate snout with a fleshy keel) by its characteristic advertisement call and morphological features (dorsum finely tuberculate with scattered larger tubercles, flanks without longitudinal lateral folds, no markings in axilla, groin or on concealed limb surfaces, and bronze iris). Additionally, we describe the advertisement call of its sister species, P. torresi. Finally, we detail the current situation of the amphibian species present in the city of Loja and its surroundings.
Collapse
Affiliation(s)
- Paul Székely
- Museo de Zoología, Universidad Técnica Particular de Loja, Loja, Ecuador
- Departamento de Ciencias Biológicas y Agropecuarias, Laboratorio de Ecología Tropical y Servicios Ecosistémicos (EcoSs-Lab), Facultad de Ciencias Exactas y Naturales, Universidad Técnica Particular de Loja, Loja, Ecuador
| | - Diana Székely
- Museo de Zoología, Universidad Técnica Particular de Loja, Loja, Ecuador
- Departamento de Ciencias Biológicas y Agropecuarias, Laboratorio de Ecología Tropical y Servicios Ecosistémicos (EcoSs-Lab), Facultad de Ciencias Exactas y Naturales, Universidad Técnica Particular de Loja, Loja, Ecuador
- * E-mail:
| | - Leonardo Ordóñez-Delgado
- Museo de Zoología, Universidad Técnica Particular de Loja, Loja, Ecuador
- Departamento de Ciencias Biológicas y Agropecuarias, Laboratorio de Ecología Tropical y Servicios Ecosistémicos (EcoSs-Lab), Facultad de Ciencias Exactas y Naturales, Universidad Técnica Particular de Loja, Loja, Ecuador
- Programa de Doctorado en Conservación de Recursos Naturales, Escuela Internacional de Doctorado, Universidad Rey Juan Carlos, Madrid, Spain
| | - Diego Armijos-Ojeda
- Museo de Zoología, Universidad Técnica Particular de Loja, Loja, Ecuador
- Departamento de Ciencias Biológicas y Agropecuarias, Laboratorio de Ecología Tropical y Servicios Ecosistémicos (EcoSs-Lab), Facultad de Ciencias Exactas y Naturales, Universidad Técnica Particular de Loja, Loja, Ecuador
- Programa de Doctorado en Conservación de Recursos Naturales, Escuela Internacional de Doctorado, Universidad Rey Juan Carlos, Madrid, Spain
| | - Judit Vörös
- Department of Zoology, Hungarian Natural History Museum, Budapest, Hungary
| |
Collapse
|
19
|
Robinson WD, Errichetti D, Pollock HS, Martinez A, Stouffer PC, Shen FY, Blake JG. Big Bird Plots: Benchmarking Neotropical Bird Communities to Address Questions in Ecology and Conservation in an Era of Rapid Change. Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.697511] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Extensive networks of large plots have the potential to transform knowledge of avian community dynamics through time and across geographical space. In the Neotropics, the global hotspot of avian diversity, only six 100-ha plots, all located in lowland forests of Amazonia, the Guianan shield and Panama, have been inventoried sufficiently. We review the most important lessons learned about Neotropical forest bird communities from those big bird plots and explore opportunities for creating a more extensive network of additional plots to address questions in ecology and conservation, following the model of the existing ForestGEO network of tree plots. Scholarly impact of the big bird plot papers has been extensive, with the papers accumulating nearly 1,500 citations, particularly on topics of tropical ecology, avian conservation, and community organization. Comparisons of results from the plot surveys show no single methodological scheme works effectively for surveying abundances of all bird species at all sites; multiple approaches have been utilized and must be employed in the future. On the existing plots, abundance patterns varied substantially between the South American plots and the Central American one, suggesting different community structuring mechanisms are at work and that additional sampling across geographic space is needed. Total bird abundance in Panama, dominated by small insectivores, was double that of Amazonia and the Guianan plateau, which were dominated by large granivores and frugivores. The most common species in Panama were three times more abundant than those in Amazonia, whereas overall richness was 1.5 times greater in Amazonia. Despite these differences in community structure, other basic information, including uncertainty in population density estimates, has yet to be quantified. Results from existing plots may inform drivers of differences in community structure and create baselines for detection of long-term regional changes in bird abundances, but supplementation of the small number of plots is needed to increase generalizability of results and reveal the texture of geographic variation. We propose fruitful avenues of future research based on our current synthesis of the big bird plots. Collaborating with the large network of ForestGEO tree plots could be one approach to improve understanding of linkages between plant and bird diversity. Careful quantification of bird survey effort, recording of exact locations of survey routes or stations, and archiving detailed metadata will greatly enhance the value of benchmark data for future repeat surveys of the existing plots and initial surveys of newly established plots.
Collapse
|
20
|
Aguirre WE, Alvarez‐Mieles G, Anaguano‐Yancha F, Burgos Morán R, Cucalón RV, Escobar‐Camacho D, Jácome‐Negrete I, Jiménez Prado P, Laaz E, Miranda‐Troya K, Navarrete‐Amaya R, Nugra Salazar F, Revelo W, Rivadeneira JF, Valdiviezo Rivera J, Zárate Hugo E. Conservation threats and future prospects for the freshwater fishes of Ecuador: A hotspot of Neotropical fish diversity. JOURNAL OF FISH BIOLOGY 2021; 99:1158-1189. [PMID: 34235726 PMCID: PMC8518725 DOI: 10.1111/jfb.14844] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 06/04/2021] [Accepted: 07/04/2021] [Indexed: 06/01/2023]
Abstract
Freshwater fish communities in Ecuador exhibit some of the highest levels of diversity and endemism in the Neotropics. Unfortunately, aquatic ecosystems in the country are under serious threat and conditions are deteriorating. In 2018-19, the government of Ecuador sponsored a series of workshops to examine the conservation status of Ecuador's freshwater fishes. Concerns were identified for 35 species, most of which are native to the Amazon region, and overfishing of Amazonian pimelodid catfishes emerged as a major issue. However, much of the information needed to make decisions across fish groups and regions was not available, hindering the process and highlighting the need for a review of the conservation threats to Ecuador's freshwater fishes. Here, we review how the physical alteration of rivers, deforestation, wetland and floodplain degradation, agricultural and urban water pollution, mining, oil extraction, dams, overfishing, introduced species and climate change are affecting freshwater fishes in Ecuador. Although many of these factors affect fishes throughout the Neotropics, the lack of data on Ecuadorian fish communities is staggering and highlights the urgent need for more research. We also make recommendations, including the need for proper enforcement of existing environmental laws, restoration of degraded aquatic ecosystems, establishment of a national monitoring system for freshwater ecosystems, investment in research to fill gaps in knowledge, and encouragement of public engagement in citizen science and conservation efforts. Freshwater fishes are an important component of the cultural and biological legacy of the Ecuadorian people. Conserving them for future generations is critical.
Collapse
Affiliation(s)
- Windsor E. Aguirre
- Department of Biological SciencesDePaul UniversityChicagoIllinoisUSA
- Instituto Nacional de BiodiversidadQuitoEcuador
- Field Museum of Natural HistoryChicagoIllinoisUSA
| | | | | | | | - Roberto V. Cucalón
- Department of Biological SciencesDePaul UniversityChicagoIllinoisUSA
- Present address:
Program in Ecology, Evolution, and Conservation BiologyUniversity of Illinois at Urbana‐ChampaignChampaignIllinoisUSA
| | | | - Iván Jácome‐Negrete
- Facultad de Ciencias Biológicas, Instituto de Estudios Amazónicos e InsularesUniversidad Central del EcuadorQuitoEcuador
| | - Pedro Jiménez Prado
- Pontificia Universidad Católica del Ecuador Sede EsmeraldasEsmeraldasEcuador
- Área de Ecología, Departamento de Ciencias Agrarias y del Medio Natural, Escuela Politécnica Superior de HuescaUniversidad de ZaragozaHuescaSpain
| | - Enrique Laaz
- Instituto Público de Investigación de Acuicultura y PescaGuayaquilEcuador
| | | | | | - Fredy Nugra Salazar
- ONG Bosque Medicinal, ONG Forest.inkGualaquizaEcuador
- Laboratorio de Limnología de la Universidad del AzuayCuencaEcuador
| | - Willan Revelo
- Unidad de Recursos Demersales Bentónicos de Agua Dulce y EmbalsesInstituto Público de Investigación de Acuicultura y PescaGuayaquilEcuador
| | | | | | | |
Collapse
|
21
|
Abstract
An influential hypothesis proposes that the tempo of evolution is faster in the tropics. Emerging evidence, including a study in this issue of PLOS Biology, challenges this view, raising new questions about the causes of Earth’s iconic latitudinal diversity gradient (LDG).
Collapse
Affiliation(s)
- Daniel L. Rabosky
- Museum of Zoology & Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, Michigan, United States of America
- * E-mail:
| |
Collapse
|
22
|
Taxonomy of the major rhizomorphic species of the "Melanopus group" within Polyporaceae in Yasuní National Park, Ecuador. PLoS One 2021; 16:e0254567. [PMID: 34347816 PMCID: PMC8336857 DOI: 10.1371/journal.pone.0254567] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 06/26/2021] [Indexed: 11/19/2022] Open
Abstract
Yasuní National Park in Ecuador is one of the most biodiverse places on earth. The fungi in this tropical rainforest are also diverse but have received little research attention. This research paper focuses on an important group of fungi in the family Polyporaceae and examines the genera Polyporus, Atroporus, and Neodictyopus that form aerial melanized cord-like structures called rhizomorphs. Phylogenetic analyses, macro and micromorphological descriptions of basidiomata and rhizomorphs, as well as cultural characterization were completed to better understand these ecologically important fungi. Here we describe four new species: Atroporus yasuniensis, Atroporus tagaeri, Neodictyopus sylvaticus, and Polyporus taromenane, and a new variety Polyporus leprieurii var. yasuniensis. The information presented in this study adds important new knowledge about the unusual rhizomorph producing fungi found in Yasuní National Park, Ecuador and other tropical rainforests.
Collapse
|
23
|
|
24
|
Ballesteros-Mejia L, Angulo E, Diagne C, Cooke B, Nuñez MA, Courchamp F. Economic costs of biological invasions in Ecuador: the importance of the Galapagos Islands. NEOBIOTA 2021. [DOI: 10.3897/neobiota.67.59116] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Biological invasions, as a result of human intervention through trade and mobility, are the second biggest cause of biodiversity loss. The impacts of invasive alien species (IAS) on the environment are well known, however, economic impacts are poorly estimated, especially in mega-diverse countries where both economic and ecological consequences of these effects can be catastrophic. Ecuador, one of the smallest mega-diverse countries, lacks a comprehensive description of the economic costs of IAS within its territory. Here, using "InvaCost", a public database that compiles all recorded monetary costs associated with IAS from English and Non-English sources, we investigated the economic costs of biological invasions. We found that between 1983 and 2017, the reported costs associated with biological invasions ranged between US$86.17 million (when considering only the most robust data) and US$626 million (when including all cost data) belonging to 37 species and 27 genera. Furthermore, 99% of the recorded cost entries were from the Galapagos Islands. From only robust data, the costliest identified taxonomic group was feral goats (Capra hircus; US$20 million), followed by Aedes mosquitoes (US$2.14 million) while organisms like plant species from the genus Rubus, a parasitic fly (Philornis downsi), black rats (Rattus rattus) and terrestrial gastropods (Achatina fulica) represented less than US$2 million each. Costs of "mixed-taxa" (i.e. plants and animals) represented the highest (61% of total robust costs; US$52.44 million). The most impacted activity sector was the national park authorities, which spent about US$84 million. Results from robust data also revealed that management expenditures were the major type of costs recorded in the Galapagos Islands; however, costs reported for medical losses related to Aedes mosquitoes causing dengue fever in mainland Ecuador would have ranked first if more detailed information had allowed us to categorize them as robust data. Over 70% of the IAS reported for Ecuador did not have reported costs. These results suggest that costs reported here are a massive underestimate of the actual economic toll of invasions in the country.
Collapse
|
25
|
Aracena S, Barboza M, Zamora V, Salaverry O, Montag D. Health system adaptation to climate change: a Peruvian case study. Health Policy Plan 2021; 36:45-83. [PMID: 33263753 DOI: 10.1093/heapol/czaa072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/29/2020] [Indexed: 11/14/2022] Open
Abstract
Despite mitigation attempts, the trajectory of climate change remains on an accelerated path, with devastating health impacts. As a response to the United Nations Framework Convention on Climate Change call for National Adaptation Plans, Peru has developed a national and decentralized regional adaptation plans. The purpose of this article is to understand the role and priority status of health within the adaptation planning and process. Peru was used as a case study to analyse the policy process in the creation of adaptation plans, encompassing the need to address climate change impacts on health with a particular focus on marginalized people. An actor, content and context policy analyses were conducted to analyse 17 out of 25 regional adaptation plans, which are available. The national adaptation plans (2002, 2015) do not include health as a priority or health adaptation strategies. In a decentralized health care system, regional plans demonstrate an increased improvement of complexity, systematization and structure over time (2009-17). In general, health has not been identified as a priority but as another area of impact. There is no cohesiveness between plans in format, content, planning and execution and only a limited consideration for marginalized populations. In conclusion, the regional departments of Peru stand on unequal footing regarding adapting the health sector to climate change. Findings in the strategies call into question how mitigation and adaption to climate change may be achieved. The lack of local research on health impacts due to climate change and a particular focus on marginalized people creates a policy vacuum. The Peruvian case study resembles global challenges to put health in the centre of national and regional adaptation plans. In-depth cross-country analysis is still missing but urgently needed to learn from other experiences.
Collapse
Affiliation(s)
- Stephanie Aracena
- Centre for Global Public Health, Queen Mary University of London, London, UK
| | - Marco Barboza
- Instituto Universitario de Investigación en Estudios Latinoamericanos, Madrid, España.,Centro de Investigaciones Tecnológicas, Biomédicas y Medioambientales - CITBM, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Victor Zamora
- Facultad de Medicina, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Oswaldo Salaverry
- Facultad de Medicina, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Doreen Montag
- Centre for Global Public Health, Queen Mary University of London, London, UK
| |
Collapse
|
26
|
Structure and inter-specific relationships of a felid community of the upper Amazonian basin under different scenarios of human impact. Mamm Biol 2021. [DOI: 10.1007/s42991-021-00149-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
27
|
Pitman NCA, Vriesendorp CF, Alvira Reyes D, Moskovits DK, Kotlinski N, Smith RC, Thompson ME, Wali A, Benavides Matarazzo M, Del Campo Á, Rivera González DE, Rivera Chávez L, Rosenthal AD, Álvarez Alonso J, Díaz Ñaupari ME, de Souza LS, Ferreyra Vela FR, Gonzales Tanchiva CN, Jarrett CC, Lemos AA, Sáenz Rodríguez AR, Stotz DF, Suwa T, Pariona Fonseca M, Ravikumar A, Torres Tuesta T, Bravo A, Catenazzi A, Díaz Alván J, Gagliardi-Urrutia G, García-Villacorta R, Hidalgo MH, Mori Vargas T, Mueses-Cisneros JJ, Núñez-Iturri G, Pequeño T, Ríos Paredes MA, Rodríguez LO, Stallard RF, Torres Montenegro LA, Venegas PJ, von May R, Barbagelata Ramírez N, Maldonado Ocampo JA, Mesones Acuy I. Applied science facilitates the large-scale expansion of protected areas in an Amazonian hot spot. SCIENCE ADVANCES 2021; 7:7/31/eabe2998. [PMID: 34330699 PMCID: PMC8324055 DOI: 10.1126/sciadv.abe2998] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 06/15/2021] [Indexed: 06/13/2023]
Abstract
Meeting international commitments to protect 17% of terrestrial ecosystems worldwide will require >3 million square kilometers of new protected areas and strategies to create those areas in a way that respects local communities and land use. In 2000-2016, biological and social scientists worked to increase the protected proportion of Peru's largest department via 14 interdisciplinary inventories covering >9 million hectares of this megadiverse corner of the Amazon basin. In each landscape, the strategy was the same: convene diverse partners, identify biological and sociocultural assets, document residents' use of natural resources, and tailor the findings to the needs of decision-makers. Nine of the 14 landscapes have since been protected (5.7 million hectares of new protected areas), contributing to a quadrupling of conservation coverage in Loreto (from 6 to 23%). We outline the methods and enabling conditions most crucial for successfully applying similar campaigns elsewhere on Earth.
Collapse
Affiliation(s)
- Nigel C A Pitman
- Keller Science Action Center, Science and Education, Field Museum of Natural History, Chicago, IL 60605 USA.
| | - Corine F Vriesendorp
- Keller Science Action Center, Science and Education, Field Museum of Natural History, Chicago, IL 60605 USA
| | - Diana Alvira Reyes
- Keller Science Action Center, Science and Education, Field Museum of Natural History, Chicago, IL 60605 USA
| | - Debra K Moskovits
- Keller Science Action Center, Science and Education, Field Museum of Natural History, Chicago, IL 60605 USA
| | - Nicholas Kotlinski
- Keller Science Action Center, Science and Education, Field Museum of Natural History, Chicago, IL 60605 USA
| | - Richard C Smith
- Instituto del Bien Común, Jr. Mayta Cápac No. 1329, Jesús María, Lima, Peru
| | - Michelle E Thompson
- Keller Science Action Center, Science and Education, Field Museum of Natural History, Chicago, IL 60605 USA
| | - Alaka Wali
- Keller Science Action Center, Science and Education, Field Museum of Natural History, Chicago, IL 60605 USA
| | | | - Álvaro Del Campo
- Keller Science Action Center, Science and Education, Field Museum of Natural History, Chicago, IL 60605 USA
| | - Dani E Rivera González
- Centro para el Desarrollo del Indígena Amazónico, Pasaje Bonifacio 166, Urb. Los Rosales de Santa Rosa, La Perla, Callao, Peru
| | - Lelis Rivera Chávez
- Centro para el Desarrollo del Indígena Amazónico, Pasaje Bonifacio 166, Urb. Los Rosales de Santa Rosa, La Perla, Callao, Peru
| | - Amy D Rosenthal
- Keller Science Action Center, Science and Education, Field Museum of Natural History, Chicago, IL 60605 USA
| | - José Álvarez Alonso
- Ministerio del Ambiente, Dirección General de Diversidad Biológica, Av. Antonio Miro Quesada 425, Magdalena del Mar, Lima, Peru
| | - María Elena Díaz Ñaupari
- Servicio Nacional de Áreas Naturales Protegidas por el Estado, Ministerio del Ambiente, Calle Diecisiete 355, Urb. El Palomar, San Isidro, Lima, Peru
| | - Lesley S de Souza
- Keller Science Action Center, Science and Education, Field Museum of Natural History, Chicago, IL 60605 USA
| | | | - Cristian Ney Gonzales Tanchiva
- Servicio Nacional de Áreas Naturales Protegidas por el Estado, Ministerio del Ambiente, Calle Diecisiete 355, Urb. El Palomar, San Isidro, Lima, Peru
| | - Christopher C Jarrett
- Keller Science Action Center, Science and Education, Field Museum of Natural History, Chicago, IL 60605 USA
| | - Ana A Lemos
- Keller Science Action Center, Science and Education, Field Museum of Natural History, Chicago, IL 60605 USA
| | | | - Douglas F Stotz
- Keller Science Action Center, Science and Education, Field Museum of Natural History, Chicago, IL 60605 USA
| | - Tomomi Suwa
- Keller Science Action Center, Science and Education, Field Museum of Natural History, Chicago, IL 60605 USA
| | - Mario Pariona Fonseca
- SPL Operaciones Botánicos Peruanos SCRL, Calle Isaac Recavarren No. 497, Urb. Los Ficus, Santa Anita, Lima, Peru
| | - Ashwin Ravikumar
- Keller Science Action Center, Science and Education, Field Museum of Natural History, Chicago, IL 60605 USA
- Amherst College, Beneski 200, Amherst, MA 01002, USA
- Universidad Nacional Intercultural de la Amazonía, Yarinacocha, Pucallpa, Ucayali, Peru
| | - Teofilo Torres Tuesta
- Servicio Nacional de Áreas Naturales Protegidas por el Estado, Ministerio del Ambiente, Calle Diecisiete 355, Urb. El Palomar, San Isidro, Lima, Peru
| | - Adriana Bravo
- Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Toronto, Ontario M5S 3B2, Canada
| | - Alessandro Catenazzi
- Department of Biological Sciences, Florida International University, 1120 SW 8th St., Miami, FL 33199, USA
| | - Juan Díaz Alván
- Vicerrectorado de Investigación e Innovación, Universidad Científica del Perú, Iquitos, Peru
| | - Giussepe Gagliardi-Urrutia
- Laboratório de Sistemática de Vertebrados, Faculdade de Biociências, Pontifícia Universidade Católica do Rio Grande do Sul, Av. Ipiranga, 6681, 90619-900 Porto Alegre, Brazil
| | | | - Max H Hidalgo
- Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, Ciudad Universitaria, Lima, Peru
| | - Tony Mori Vargas
- Autoridad Regional Ambiental de Loreto, Gobierno Regional de Loreto, Iquitos, Peru
| | - Jonh J Mueses-Cisneros
- Corporación para el Desarrollo Sostenible del Sur de la Amazonia (CORPOAMAZONIA), Mocoa, Putumayo, Colombia
| | - Gabriela Núñez-Iturri
- Pontificia Universidad Católica del Perú, Sección Química, Departamento Académico de Ciencias, Av. Universitaria 1801, San Miguel, Lima 32, Peru
| | - Tatiana Pequeño
- CIMA - Cordillera Azul, Centro de Conservación, Investigación y Manejo de Áreas Naturales, Av. Benavides 1238, Lima, Peru
| | - Marcos A Ríos Paredes
- Universidade Federal Juiz de Fora, Campus Universitário, Bairro São Pedro, Juiz de Fora, 36036-900 Brazil
| | - Lily O Rodríguez
- CIMA - Cordillera Azul, Centro de Conservación, Investigación y Manejo de Áreas Naturales, Av. Benavides 1238, Lima, Peru
| | - Robert F Stallard
- Keller Science Action Center, Science and Education, Field Museum of Natural History, Chicago, IL 60605 USA
- Institute of Arctic and Alpine Research, University of Colorado, Campus Box 450, Boulder, CO 80309-0450, USA
| | | | - Pablo J Venegas
- Centro de Ornitología y Biodiversidad (CORBIDI), Santa Rita No. 105, Of. 202, Urb. Huertos de San Antonio, Santiago de Surco, Lima, Peru
| | - Rudolf von May
- Biology Program, California State University, Channel Islands, 1 University Dr., Camarillo, CA 93012, USA
| | - Nélida Barbagelata Ramírez
- Naturaleza y Cultura Internacional, Calle Jorge Chávez con Pasaje Jorge Chávez No. 13, Urb. Miami, Iquitos, Peru
| | - Javier A Maldonado Ocampo
- Unidad de Ecología y Sistemática (UNESIS), Laboratorio de Ictiología, Departamento de Biología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Italo Mesones Acuy
- Universidad Nacional de la Amazonía Peruana, Sargento Lores 385, Iquitos, Peru
| |
Collapse
|
28
|
Riley Peterson KN, Browne RA, Erwin TL. Carabid beetle (Coleoptera, Carabidae) richness, diversity, and community structure in the understory of temporarily flooded and non-flooded Amazonian forests of Ecuador. Zookeys 2021; 1044:831-876. [PMID: 34183894 PMCID: PMC8222208 DOI: 10.3897/zookeys.1044.62340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 04/09/2021] [Indexed: 11/17/2022] Open
Abstract
Although tropical regions harbor the greatest arthropod diversity on Earth, the majority of species are taxonomically and scientifically unknown. Furthermore, how they are organized into functional communities and distributed among habitats is mostly unstudied. Here we examine species richness, diversity, and community composition of carabid beetles (Coleoptera: Carabidae) and compare them between flooded (FP) and non-flooded terra firme (TF) forests in the Yasuní area of Ecuador. The forest understory was sampled using flight intercept traps (FITs) and systematic hand collections at night in June and July 2011 and 2012, and FITs in October and November 2011. A total of 1,255 Carabidae representing 20 tribes, 54 genera, and 143 morphospecies was collected. Mean number of individuals and mean species richness did not differ significantly between FP and TF; however, numbers of Cicindelini (tiger beetles) and Pentagonicini were higher in TF forest while numbers of Lachnophorini and Scaritini were higher in FP forest. Overall, FP had significantly higher rarefied richness but extrapolation of rarefaction curves using the Chao1 nonparametric diversity estimator show that this difference may decrease with additional sampling. The inverse Simpson index was significantly higher for FP than TF forest. Nonmetric multidimensional scaling (NMDS) ordination and dissimilarity coefficient values show that FP and TF forests maintain unique assemblages with minimal overlap in community composition. Given ongoing anthropogenic pressures, particularly petroleum extraction, and those resulting from climate change, a greater understanding of the richness, diversity and community assemblages of Yasuní rainforest are needed to better conserve the fauna of this megadiverse area of Amazonia.
Collapse
Affiliation(s)
- Kathryn N. Riley Peterson
- Department of Biology, Wake Forest University, Winston-Salem, NC, USAWake Forest UniversityWinston-SalemUnited States of America
- Department of Natural Sciences, Pfeiffer University, Misenheimer, NC, USAPfeiffer UniversityMisenheimerUnited States of America
| | - Robert A. Browne
- Department of Biology, Wake Forest University, Winston-Salem, NC, USAWake Forest UniversityWinston-SalemUnited States of America
| | - Terry L. Erwin
- Department of Entomology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USASmithsonian InstitutionWashingtonUnited States of America
| |
Collapse
|
29
|
Servat GP. Terry L. Erwin and the race to document biodiversity (1940-2020). Zookeys 2021; 1044:3-22. [PMID: 34183874 PMCID: PMC8222204 DOI: 10.3897/zookeys.1044.68652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 05/19/2021] [Indexed: 11/12/2022] Open
Abstract
Terry Erwin's race to document arthropod diversity inspired taxonomists, systematists, ecologists, evolutionary biologists, and the conservation community at large, as his curatorial work of more than 50 years at the Smithsonian's National Museum of Natural History and prolific publication record attests. The biography compiles public records, publications, as well as personal memoirs to describe the context in which Erwin's studies with carabid beetles evolved as formalization of concepts, such as biological diversity, megadiverse countries, biodiversity loss, and conservation biology, will become central for science in the upcoming years. Awareness to explore new frontiers such as the forest canopy and Erwin's studies in tropical forests, his easy-going personality, and dedicated mentoring attracted colleagues, students, and the general public, making him one of the leaders of tropical biology in the world.
Collapse
Affiliation(s)
- Grace P Servat
- Smithsonian Conservation Biology Institute. Center for Conservation Education & Sustainability (CCES), 1100 Jefferson Dr. 3123, Washington D.C, 20560 - MRC 705, USA Smithsonian Conservation Biology Institute. Center for Conservation Education & Sustainability Washington D.C United States of America
| |
Collapse
|
30
|
Geographic Patterns of Genetic Variation among Cacao (Theobroma cacao L.) Populations Based on Chloroplast Markers. DIVERSITY 2021. [DOI: 10.3390/d13060249] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The cacao tree (Theobroma cacao L.) is native to the Amazon basin and widely cultivated in the tropics to produce seeds, the valuable raw material for the chocolate industry. Conservation of cacao genetic resources and their availability for breeding and production programs are vital for securing cacao supply. However, relatively little is still known about the phylogeographic structure of natural cacao populations. We studied the geographic distribution of cpDNA variation in different populations representing natural cacao stands, cacao farms in Ecuador, and breeding populations. We used six earlier published cacao chloroplast microsatellite markers to genotype 233 cacao samples. In total, 23 chloroplast haplotypes were identified. The highest variation of haplotypes was observed in western Amazonia including geographically restricted haplotypes. Two observed haplotypes were widespread across the Amazon basin suggesting long distance seed dispersal from west to east in Amazonia. Most cacao genetic groups identified earlier using nuclear SSRs are associated with specific chloroplast haplotypes. A single haplotype was common in selections representing cacao plantations in west Ecuador and reference Trinitario accessions. Our results can be used to determine the chloroplast diversity of accessions and in combination with phenotypic assessments can help to select geographically distinctive varieties for cacao breeding programs.
Collapse
|
31
|
Veilleux CC, Kawamura S, Montague MJ, Hiwatashi T, Matsushita Y, Fernandez‐Duque E, Link A, Di Fiore A, Snodderly DM. Color vision and niche partitioning in a diverse neotropical primate community in lowland Amazonian Ecuador. Ecol Evol 2021; 11:5742-5758. [PMID: 34026044 PMCID: PMC8131790 DOI: 10.1002/ece3.7479] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 03/02/2021] [Accepted: 03/05/2021] [Indexed: 01/05/2023] Open
Abstract
A recent focus in community ecology has been on how within-species variability shapes interspecific niche partitioning. Primate color vision offers a rich system in which to explore this issue. Most neotropical primates exhibit intraspecific variation in color vision due to allelic variation at the middle-to-long-wavelength opsin gene on the X chromosome. Studies of opsin polymorphisms have typically sampled primates from different sites, limiting the ability to relate this genetic diversity to niche partitioning. We surveyed genetic variation in color vision of five primate species, belonging to all three families of the primate infraorder Platyrrhini, found in the Yasuní Biosphere Reserve in Ecuador. The frugivorous spider monkeys and woolly monkeys (Ateles belzebuth and Lagothrix lagotricha poeppigii, family Atelidae) each had two opsin alleles, and more than 75% of individuals carried the longest-wavelength (553-556 nm) allele. Among the other species, Saimiri sciureus macrodon (family Cebidae) and Pithecia aequatorialis (family Pitheciidae) had three alleles, while Plecturocebus discolor (family Pitheciidae) had four alleles-the largest number yet identified in a wild population of titi monkeys. For all three non-atelid species, the middle-wavelength (545 nm) allele was the most common. Overall, we identified genetic evidence of fourteen different visual phenotypes-seven types of dichromats and seven trichromats-among the five sympatric taxa. The differences we found suggest that interspecific competition among primates may influence intraspecific frequencies of opsin alleles. The diversity we describe invites detailed study of foraging behavior of different vision phenotypes to learn how they may contribute to niche partitioning.
Collapse
Affiliation(s)
- Carrie C. Veilleux
- Department of Anthropology and Primate Molecular Ecology and Evolution LaboratoryUniversity of Texas at AustinAustinTXUSA
- Department of AnatomyMidwestern UniversityGlendaleAZUSA
| | - Shoji Kawamura
- Department of Integrated BiosciencesUniversity of TokyoKashiwaJapan
| | | | | | - Yuka Matsushita
- Department of Integrated BiosciencesUniversity of TokyoKashiwaJapan
| | - Eduardo Fernandez‐Duque
- Department of Anthropology and School of the EnvironmentYale UniversityNew HavenCTUSA
- College of Biological and Environmental SciencesUniversidad San Francisco de QuitoCumbayáEcuador
| | - Andres Link
- College of Biological and Environmental SciencesUniversidad San Francisco de QuitoCumbayáEcuador
- Department of Biological SciencesUniversidad de Los AndesBogotaColombia
| | - Anthony Di Fiore
- Department of Anthropology and Primate Molecular Ecology and Evolution LaboratoryUniversity of Texas at AustinAustinTXUSA
- College of Biological and Environmental SciencesUniversidad San Francisco de QuitoCumbayáEcuador
| | | |
Collapse
|
32
|
Lizana V, Martínez-Carrasco C, Mosquera D, Vinueza H. G, Romo D, Swing K, Cardells J, Díaz EA. Scavenging behavior of the Short-eared Dog (Atelocynus microtis) in Ecuadorian lowland rainforest. STUDIES ON NEOTROPICAL FAUNA AND ENVIRONMENT 2021. [DOI: 10.1080/01650521.2021.1897379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Victor Lizana
- Servicio de Análisis, Investigación, Gestión de Animales Silvestres (SAIGAS), Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities Alfara del Patriarca, Valencia, Spain
- Wildlife Ecology & Health group (WE&H), Universitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, Spain
| | - Carlos Martínez-Carrasco
- Department of Animal Health, Regional Campus of International Excellence ‘Campus Mare Nostrum’, University of Murcia, Murcia, Spain
| | - Diego Mosquera
- Estación de Biodiversidad Tiputini, Colegio de Ciencias Biológicas y Ambientales, Universidad San Francisco de Quito, Quito, Ecuador
| | - Gabriela Vinueza H.
- Estación de Biodiversidad Tiputini, Colegio de Ciencias Biológicas y Ambientales, Universidad San Francisco de Quito, Quito, Ecuador
| | - David Romo
- Estación de Biodiversidad Tiputini, Colegio de Ciencias Biológicas y Ambientales, Universidad San Francisco de Quito, Quito, Ecuador
| | - Kelly Swing
- Estación de Biodiversidad Tiputini, Colegio de Ciencias Biológicas y Ambientales, Universidad San Francisco de Quito, Quito, Ecuador
| | - Jesús Cardells
- Servicio de Análisis, Investigación, Gestión de Animales Silvestres (SAIGAS), Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities Alfara del Patriarca, Valencia, Spain
- Wildlife Ecology & Health group (WE&H), Universitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, Spain
| | - Eduardo A. Díaz
- Hospital de Fauna Silvestre, Escuela de Medicina Veterinaria, Universidad San Francisco de Quito, Quito, Ecuador
| |
Collapse
|
33
|
Multitemporal Analysis of Land Use and Land Cover within an Oil Block in the Ecuadorian Amazon. ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION 2021. [DOI: 10.3390/ijgi10030191] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The Ecuadorian Amazon is considered a biodiverse region, and at the same time contains the largest number of oil blocks and oilfields in the country. Oil exploitation requires the implementation of oil facilities and related infrastructure, such as roads, water, and energy supply, for operation. These large engineering works can alter the dynamics of the Amazonian natural ecosystems. This paper analyzes the land use and land cover (LULC) change and relates spatial patterns within an oil block located in the province of Orellana, Ecuador. The study was processed in two phases, the first corresponding to the collection and classification of LULC classes within the oil block. The second phase concerned the calculation of landscape metrics, with the purpose of quantitatively characterizing each class. This analysis was carried out for the pre-concession, post-concession scenarios of the oil block and the current scenario of the region. The results revealed that the low predominance of forest cover within the study region is not directly associated with the beginning of the Block 47 concession. On the other hand, a significant reduction of the Coca River was evidenced for the 2018 scenario.
Collapse
|
34
|
Assessing Tradeoffs between Development and Conservation: A Case of Land Use Change in a National Park of Korea. LAND 2021. [DOI: 10.3390/land10020152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Protected areas are places that provide diverse ecosystem services, including cultural ecosystem services. At the same time, the development and unbalanced use of natural resources in protected areas often create environmental threats and social conflicts. This study estimates the economic value of environmental consequences derived from the construction of an airport in a national park in Korea. We employ a discrete choice experiment to assess economic values and consider a key part of the tradeoffs derived from the airport construction at Heuksan Island of Dadohae Marine National Park in Korea. The results show that social benefits related to improved accessibility and tourism opportunities would be generated but at substantial costs resulting from environmental degradation and the reduction in bird populations. A segmentation analysis also reveals that heterogeneous preferences exist based on variables reflecting individuals’ visit experiences and trust in the government. The findings indicate that considering environmental impacts is important when evaluating the feasibility of a development project in a protected area.
Collapse
|
35
|
Blake JG. Acoustic monitors and direct observations provide similar but distinct perspectives on bird assemblages in a lowland forest of eastern Ecuador. PeerJ 2021; 9:e10565. [PMID: 33520440 PMCID: PMC7811295 DOI: 10.7717/peerj.10565] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 11/23/2020] [Indexed: 11/20/2022] Open
Abstract
Bird communities in lowland Neotropical forests exhibit temporal and spatial variation in species composition and abundance at multiple scales. Detecting and explaining such variation requires adequate methods for sampling those bird communities but counting birds in highly diverse lowland forests of the Neotropics can be particularly challenging. Point counts are one of the most frequently used methods for counting birds in tropical forests but inter- and intra-observer variability in detecting and identifying sounds may cause problems. Acoustic monitors (passive acoustic monitors; autonomous recording units) provide an alternative and potentially effective method to sample bird communities by acting, in effect, as “point counts”, recording vocalizations at a given point for a set time. I used acoustic monitors to examine patterns of species richness, spatial distribution, and community composition of birds in a lowland forest in eastern Ecuador, one of the most diverse regions on earth. I deployed monitors at 25 locations, each separated by at least 200 m, on each of two 100-ha plots (Harpia, Puma) at Tiputini Biodiversity Station during January–February, 2013–2017. Monitors were set to record for 10 min followed by a 5-min break, from 0545 h to 0810 h (10 recording periods/morning). Recordings were later reviewed to identify species; no attempt was made to distinguish individuals or to estimate distance. Results were compared with contemporaneous direct observations along transects on the same plots. A total of 214 species were identified from recordings on both plots, combined, with slightly more on Harpia (208) than on Puma (188). Number per year ranged from 142 on Harpia in 2016 to 161 on Puma in 2015. Number per point was ~45 with an overall range of 29–68. Number of species detected in recordings was similar to but somewhat less than the number recorded during direct observations. Number of species recorded increased rapidly from the first period (0545–0555 h) to the third (0615–0625 h) but showed little subsequent change. Most species were recorded at relatively few points; the four most widely distributed species were the same on both plots (Patagioenas plumbea, Xiphorhynchus guttatus, Capito aurita, Ramphastos tucanus), all of which are relatively loud canopy or subcanopy species. Ordinations based on species composition illustrated differences between plots based on both recordings and direct observations; similarly, patterns of species composition differed between methods. Acoustic monitors can be an effective tool for sampling bird communities and may be particularly effective and efficient for sampling loud species with distinctive songs. Nonetheless, results from monitors may provide different perspectives on species composition when compared to direct observations. Which method is preferred likely will depend on the specific objectives of individual studies.
Collapse
Affiliation(s)
- John G Blake
- Wildlife Ecology & Conservation, University of Florida, Gainesville, FL, USA
| |
Collapse
|
36
|
Jordán JP, Domínguez-Trujillo M, Cisneros-Heredia DF. Phylogenetic placement of the spider genus Taczanowskia (Araneae:Araneidae) and description of a new species from Ecuador. INVERTEBR SYST 2021. [DOI: 10.1071/is20084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The genus Taczanowskia Keyserling, 1879 is one of the rarest groups of spiders in the orb-weaving family Araneidae, with only five species described and 17 specimens cited in publications. Our study provides new insights into the evolutionary relationships and diversity of Taczanowskia. Using morphological data, we tested the evolutionary relationships of the genus within the family Araneidae and propose the first phylogenetic hypothesis depicting the relationships among species of Taczanowskia. Our results place Taczanowskia as sister to Mastophora Holmberg, 1876, and confirm the monophyly of Taczanowskia. We describe the first species of Taczanowskia from Ecuador, collected at a Waorani community on the River Curaray basin, Amazonian lowlands of Ecuador. The new species can be easily diagnosed from all other species of Taczanowskia by having two tubercles in the opisthosoma; a distinct patchy dark–light colouration pattern with dark spots concentrated towards the anterior margin and on the lateral tips; small bundles of white setae forming a reticulum across the dorsal part of the opisthosoma, and the first two femora thick but lacking teeth on the margin.
ZooBank registration: urn:lsid:zoobank.org:pub:46B8C1F7-A474-4DC3-90BC-940F84AC099D
Collapse
|
37
|
de Carvalho TR, Simões PI, Gagliardi-Urrutia G, Rojas-Runjaic FJM, Haddad CFB, Castroviejo-Fisher S. A New Forest-Dwelling Frog Species of the Genus Adenomera (Leptodactylidae) from Northwestern Brazilian Amazonia. COPEIA 2020. [DOI: 10.1643/ch-19-329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Thiago R. de Carvalho
- Laboratório de Herpetologia, Departamento de Biodiversidade e Centro de Aquicultura, Instituto de Biologia, Universidade Estadual Paulista (UNESP), Rio Claro, São Paulo, Brazil; (TRC) ; and (CFBH) haddad1000@gmail
| | - Pedro I. Simões
- Laboratório de Sistemática de Vertebrados, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil; (GGU) ; (FJMRR) ; and (SCF) castroviejo.fisher
| | - Giussepe Gagliardi-Urrutia
- Laboratório de Sistemática de Vertebrados, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil; (GGU) ; (FJMRR) ; and (SCF) castroviejo.fisher
| | - Fernando J. M. Rojas-Runjaic
- Laboratório de Sistemática de Vertebrados, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil; (GGU) ; (FJMRR) ; and (SCF) castroviejo.fisher
| | - Célio F. B. Haddad
- Laboratório de Herpetologia, Departamento de Biodiversidade e Centro de Aquicultura, Instituto de Biologia, Universidade Estadual Paulista (UNESP), Rio Claro, São Paulo, Brazil; (TRC) ; and (CFBH) haddad1000@gmail
| | - Santiago Castroviejo-Fisher
- Laboratório de Sistemática de Vertebrados, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil; (GGU) ; (FJMRR) ; and (SCF) castroviejo.fisher
| |
Collapse
|
38
|
Nabe‐Nielsen J, Valencia R. Canopy structure and forest understory conditions in a wet Amazonian forest—No change over the last 20 years. Biotropica 2020. [DOI: 10.1111/btp.12872] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
| | - Renato Valencia
- Laboratorio de Ecología de Plantas Escuela de Ciencias Biológicas Pontificia Universidad Católica del Ecuador Quito Ecuador
| |
Collapse
|
39
|
Székely P, Eguiguren JS, Ordóñez-Delgado L, Armijos-Ojeda D, Székely D. Fifty years after: A taxonomic revision of the amphibian species from the Ecuadorian biodiversity hotspot Abra de Zamora, with description of two new Pristimantis species. PLoS One 2020; 15:e0238306. [PMID: 32911497 PMCID: PMC7482940 DOI: 10.1371/journal.pone.0238306] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 08/12/2020] [Indexed: 11/18/2022] Open
Abstract
Abra de Zamora is an important biodiversity hotspot in southern Ecuador. Between 1938 and 2010, eleven species of frogs were described from here: Lynchius flavomaculatus, Gastrotheca psychrophila, Pristimantis balionotus, P. colodactylus, P. cryptomelas, P. percultus, P. versicolor, P. vidua, Telmatobius cirrhacelis, P. andinognomus, and Atelopus podocarpus. Unfortunately, many of these species were not re-encountered after their original description, and for the majority DNA samples were not available, making their phylogenetic position unknown. In this study, we assess the current state of the amphibians from Abra de Zamora, by: i. redescribing the species which were first reported from the area, by contributing genetic delimitation (for L. flavomaculatus, P. balionotus, P. colodactylus, P. percultus, and P. vidua), release call (L. flavomaculatus) and advertisement call descriptions (for P. balionotus, P. vidua and P. versicolor); ii. presenting an updated amphibian species list of Abra de Zamora, with the description of two additional Pristimantis species; iii. updating the distribution of these species, including data collected in similar montane habitats from surrounding areas; and iv. amending recommendations regarding their conservation status.
Collapse
Affiliation(s)
- Paul Székely
- Museo de Zoología, Universidad Técnica Particular de Loja, Loja, Ecuador
- Laboratorio de Ecología Tropical y Servicios Ecosistémicos - EcoSs Lab, Departamento de Ciencias Biológicas, Universidad Técnica Particular de Loja, Loja, Ecuador
- * E-mail:
| | - Juan Sebastián Eguiguren
- Biotechnology Center (BIOTEC), Center for Molecular and Cellular Bioengineering (CMCB), Technische Universität Dresden (TUD), Dresden, Germany
| | - Leonardo Ordóñez-Delgado
- Laboratorio de Ecología Tropical y Servicios Ecosistémicos - EcoSs Lab, Departamento de Ciencias Biológicas, Universidad Técnica Particular de Loja, Loja, Ecuador
- Programa de Doctorado en Conservación de Recursos Naturales, Escuela Internacional de Doctorado, Universidad Rey Juan Carlos, Móstoles, Madrid, Spain
| | - Diego Armijos-Ojeda
- Laboratorio de Ecología Tropical y Servicios Ecosistémicos - EcoSs Lab, Departamento de Ciencias Biológicas, Universidad Técnica Particular de Loja, Loja, Ecuador
- Programa de Doctorado en Conservación de Recursos Naturales, Escuela Internacional de Doctorado, Universidad Rey Juan Carlos, Móstoles, Madrid, Spain
| | - Diana Székely
- Laboratorio de Ecología Tropical y Servicios Ecosistémicos - EcoSs Lab, Departamento de Ciencias Biológicas, Universidad Técnica Particular de Loja, Loja, Ecuador
- Faculty of Natural and Agricultural Sciences, Ovidius University Constanța, Constanța, Romania
| |
Collapse
|
40
|
Abundance of jaguars and occupancy of medium- and large-sized vertebrates in a transboundary conservation landscape in the northwestern Amazon. Glob Ecol Conserv 2020. [DOI: 10.1016/j.gecco.2020.e01079] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
|
41
|
Noh JK, Echeverria C, Kleemann J, Koo H, Fürst C, Cuenca P. Warning about conservation status of forest ecosystems in tropical Andes: National assessment based on IUCN criteria. PLoS One 2020; 15:e0237877. [PMID: 32841244 PMCID: PMC7447026 DOI: 10.1371/journal.pone.0237877] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 08/04/2020] [Indexed: 11/18/2022] Open
Abstract
World ecosystems are suffering from anthropogenic and natural pressure. The IUCN (International Union for Conservation of Nature) has developed analogous criteria for the Red List of Threatened Species in order to perform similar risk assessments on ecosystems, creating the Red List of Ecosystems (RLE) methodology. One of the most significant challenges for the construction of these lists is gathering the available information to apply the criteria. By applying IUCN RLE criteria B (the extent of restricted geographic distribution of an ecosystem), we analyzed the threat level of 64 forest ecosystems of the Ecuadorian mainland. According to the results, limited distribution is the key risk to threatened ecosystems, which are associated with anthropogenic pressures. Our study showed that 22% of forest ecosystems are classified as threatened. This evaluation of the forest ecosystem status at a national level could lead to public awareness towards ecosystem conservation and provide reasonable strategies to managers.
Collapse
Affiliation(s)
- Jin Kyoung Noh
- Laboratorio de Cambio Global, Universidad Regional Amazónica Ikiam, Tena, Ecuador
- Department Sustainable Landscape Development, Institute for Geosciences and Geography, Martin-Luther-University Halle-Wittenberg Halle, Halle, Germany
| | - Cristian Echeverria
- Laboratorio de Ecología de Paisaje, Facultad de Ciencias Forestales, Universidad de Concepción, Concepción, Chile
| | - Janina Kleemann
- Department Sustainable Landscape Development, Institute for Geosciences and Geography, Martin-Luther-University Halle-Wittenberg Halle, Halle, Germany
| | - Hongmi Koo
- Department Sustainable Landscape Development, Institute for Geosciences and Geography, Martin-Luther-University Halle-Wittenberg Halle, Halle, Germany
| | - Christine Fürst
- Department Sustainable Landscape Development, Institute for Geosciences and Geography, Martin-Luther-University Halle-Wittenberg Halle, Halle, Germany
| | - Pablo Cuenca
- Laboratorio de Cambio Global, Universidad Regional Amazónica Ikiam, Tena, Ecuador
- Grupo de Investigación Ecosistemas Tropicales y Cambio Global, Universidad Regional Amazónica Ikiam, Tena, Ecuador
| |
Collapse
|
42
|
Tirira DG, Greeney HF, Omaca C, Baihua O, Killackey RP. Species richness and ethnozoological annotations on mammals at the Boanamo indigenous community, Waorani territory, Orellana and Pastaza provinces, Ecuador. MAMMALIA 2020. [DOI: 10.1515/mammalia-2019-0144] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
We present the results of a rapid ecological assessment conducted in 2012 in the community of Boanamo, in the Waorani Ethnic Reserve and Yasuní National Park, Orellana and Pastaza provinces, Ecuadorian Amazon. The study included surveys and observations of mammals by different methodologies over a 16-day sampling period. The results show the presence of 89 species of mammals, but there are several other mammal species expected in the area, increasing the projected diversity to 119 species, a high diverse community when compared with similar locations. Statistical analyses show that Boanamo is an area of high species richness and heterogeneity, consistent with comparable surveys in other areas of primary lowland rainforest in Amazonia. In addition, we documented nine distinct ways and 130 different usages in which 43 species are utilized in Boanamo. To estimate the importance of mammal diversity, we used a Cultural Importance Index, which shows that the species with the highest value are Panthera onca and Nasua nasua. However, the most frequently hunted species were Tayassu pecari and Lagothrix lagothricha. Our final conclusion is the community of Boanamo is entirely dependent on the surrounding forest, and mammals are an important part of their culture and subsistence.
Collapse
Affiliation(s)
- Diego G. Tirira
- Fundación Mamíferos y Conservación , Urb. Hacienda Capelo 165 , Capelo , Rumiñahui , Ecuador
| | - Harold F. Greeney
- Yanayacu Biological Station and Center for Creative Studies , Cosanga , Napo , Ecuador
| | - Conan Omaca
- Boanamo, Waorani territory , Boanamo , Orellana Province , Ecuador
| | - Otobo Baihua
- Boanamo, Waorani territory , Boanamo , Orellana Province , Ecuador
| | - Ryan P. Killackey
- Pollywog Productions , 4306 Arkansas Ave. NW #203 , Washington , D.C. 20011, USA
| |
Collapse
|
43
|
Adaku N, Park HB, Spakowicz DJ, Tiwari MK, Strobel SA, Crawford JM, Rogers FA. A DNA Repair Inhibitor Isolated from an Ecuadorian Fungal Endophyte Exhibits Synthetic Lethality in PTEN-Deficient Glioblastoma. JOURNAL OF NATURAL PRODUCTS 2020; 83:1899-1908. [PMID: 32407116 DOI: 10.1021/acs.jnatprod.0c00012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Disruption of the tumor suppressor PTEN, either at the protein or genomic level, plays an important role in human cancer development. The high frequency of PTEN deficiency reported across several cancer subtypes positions therapeutic approaches that exploit PTEN loss-of-function with the ability to significantly impact the treatment strategies of a large patient population. Here, we report that an endophytic fungus isolated from a medicinal plant produces an inhibitor of DNA double-strand-break repair. Furthermore, the novel alkaloid product, which we have named irrepairzepine (1), demonstrated synthetic lethal targeting in PTEN-deficient glioblastoma cells. Our results uncover a new therapeutic lead for PTEN-deficient cancers and an important molecular tool toward enhancing the efficacy of current cancer treatments.
Collapse
Affiliation(s)
- Nneoma Adaku
- Department of Therapeutic Radiology, Yale School of Medicine, New Haven, Connecticut 06520, United States
| | - Hyun Bong Park
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
- Chemical Biology Institute, Yale University, West Haven, Connecticut 06516, United States
| | - Daniel J Spakowicz
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Meetu Kaushik Tiwari
- Department of Therapeutic Radiology, Yale School of Medicine, New Haven, Connecticut 06520, United States
| | - Scott A Strobel
- Chemical Biology Institute, Yale University, West Haven, Connecticut 06516, United States
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Jason M Crawford
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
- Chemical Biology Institute, Yale University, West Haven, Connecticut 06516, United States
- Department of Microbial Pathogenesis, Yale School of Medicine, New Haven, Connecticut 06536, United States
| | - Faye A Rogers
- Department of Therapeutic Radiology, Yale School of Medicine, New Haven, Connecticut 06520, United States
- Yale Cancer Center, Yale School of Medicine, New Haven, Connecticut 06520, United States
| |
Collapse
|
44
|
Abstract
Glassfrogs (family: Centrolenidae) represent a fantastic radiation (~150 described species) of Neotropical anurans that originated in South America and dispersed into Central America. In this study, we review the systematics of Ecuadorian glassfrogs, providing species accounts of all 60 species, including three new species described herein. For all Ecuadorian species, we provide new information on the evolution, morphology, biology, conservation, and distribution. We present a new molecular phylogeny for Centrolenidae and address cryptic diversity within the family. We employ a candidate species system and designate 24 putative new species that require further study to determine their species status. We find that, in some cases, currently recognized species lack justification; specifically, we place Centrolene gemmata and Centrolene scirtetes under the synonymy of Centrolene lynchi; C. guanacarum and C. bacata under the synonymy of Centrolene sanchezi; Cochranella phryxa under the synonymy of Cochranella resplendens; and Hyalinobatrachium ruedai under the synonymy of Hyalinobatrachium munozorum. We also find that diversification patterns are mostly congruent with allopatric speciation, facilitated by barriers to gene flow (e.g., valleys, mountains, linearity of the Andes), and that niche conservatism is a dominant feature in the family. Conservation threats are diverse, but habitat destruction and climate change are of particular concern. The most imperiled glassfrogs in Ecuador are Centrolene buckleyi, C. charapita, C. geckoidea, C. medemi, C. pipilata, Cochranella mache, Nymphargus balionotus, N. manduriacu, N. megacheirus, and N. sucre, all of which are considered Critically Endangered. Lastly, we identify priority areas for glassfrog conservation in Ecuador.
Collapse
|
45
|
Ball JGC, Burgman MA, Goldman ED, Lessmann J. Protecting biodiversity and economic returns in resource-rich tropical forests. CONSERVATION BIOLOGY : THE JOURNAL OF THE SOCIETY FOR CONSERVATION BIOLOGY 2020; 35:263-273. [PMID: 32390229 DOI: 10.1111/cobi.13534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 03/27/2020] [Accepted: 05/06/2020] [Indexed: 06/11/2023]
Abstract
In pursuit of socioeconomic development, many countries are expanding oil and mineral extraction into tropical forests. These activities seed access to remote, biologically rich areas, thereby endangering global biodiversity. Here we demonstrate that conservation solutions that effectively balance the protection of biodiversity and economic revenues are possible in biologically valuable regions. Using spatial data on oil profits and predicted species and ecosystem extents, we optimise the protection of 741 terrestrial species and 20 ecosystems of the Ecuadorian Amazon, across a range of opportunity costs (i.e. sacrifices of extractive profit). For such an optimisation, giving up 5% of a year's oil profits (US$ 221 million) allows for a protected area network that retains of an average of 65% of the extent of each species/ecosystem. This performance far exceeds that of the network produced by simple land area optimisation which requires a sacrifice of approximately 40% of annual oil profits (US$ 1.7 billion), and uses only marginally less land, to achieve equivalent levels of ecological protection. Applying spatial statistics to remotely sensed, historic deforestation data, we further focus the optimisation to areas most threatened by imminent forest loss. We identify Emergency Conservation Targets: areas that are essential to a cost-effective conservation reserve network and at imminent risk of destruction, thus requiring urgent and effective protection. Governments should employ the methods presented here when considering extractive led development options, to responsibly manage the associated ecological-economic trade-offs and protect natural capital. Article Impact Statement: Governments controlling resource extraction from tropical forests can arrange production and conservation to retain biodiversity and profits. This article is protected by copyright. All rights reserved.
Collapse
Affiliation(s)
- James G C Ball
- Centre for Environmental Policy, Weeks Building, 16-18 Princes Gardens, London, SW7 1NE, UK
- School of BioSciences, University of Melbourne, Royal Parade, Parkville, Victoria, 3052, Australia
- Current: Department of Plant Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EA, UK
| | - Mark A Burgman
- Centre for Environmental Policy, Imperial College London, Weeks Building, 16-18 Princes Gardens, London, SW7 1NE, UK
| | - Elizabeth D Goldman
- World Resources Institute, 10 G St NE #800, Washington, DC 20002, United States
| | - Janeth Lessmann
- Pontifical Catholic University of Chile, Santiago, Chile
- Instituto de Ecología y Biodiversidad, Chile
| |
Collapse
|
46
|
Jaramillo AF, De La Riva I, Guayasamin JM, Chaparro JC, Gagliardi-Urrutia G, Gutiérrez RC, Brcko I, Vilà C, Castroviejo-Fisher S. Vastly underestimated species richness of Amazonian salamanders (Plethodontidae: Bolitoglossa) and implications about plethodontid diversification. Mol Phylogenet Evol 2020; 149:106841. [PMID: 32305511 DOI: 10.1016/j.ympev.2020.106841] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 04/10/2020] [Accepted: 04/13/2020] [Indexed: 11/29/2022]
Abstract
We present data showing that the number of salamander species in Amazonia is vastly underestimated. We used DNA sequences of up to five genes (3 mitochondrial and 2 nuclear) of 366 specimens, 189 corresponding to 89 non-Amazonian nominal species and 177 Amazonian specimens, including types or topotypes, of eight of the nine recognized species in the region. By including representatives of all known species of Amazonian Bolitoglossa, except for one, and 73% of the currently 132 recognized species of the genus, our dataset represents the broadest sample of Bolitoglossa species, specimens, and geographic localities studied to date. We performed phylogenetic analyses using parsimony with tree-alignment and maximum likelihood (ML) with similarity alignment, with indels as binary characters. Our optimal topologies were used to delimit lineages that we assigned to nominal species and candidate new species following criteria that maximize the consilience of the current species taxonomy, monophyly, gaps in branch lengths, genetic distances, and geographic distribution. We contrasted the results of our species-delimitation protocol with those of Automated Barcode Gap Discovery (ABGD) and multi-rate Poisson Tree Processes (mPTP). Finally, we inferred the historical biogeography of South American salamanders by dating the trees and using dispersal-vicariance analysis (DIVA). Our results revealed a clade including almost all Amazonian salamanders, with a topology incompatible with just the currently recognized nine species. Following our species-delimitation criteria, we identified 44 putative species in Amazonia. Both ABGD and mPTP inferred more species than currently recognized, but their numbers (23-49) and limits vary. Our biogeographic analysis suggested a stepping-stone colonization of the Amazonian lowlands from Central America through the Chocó and the Andes, with several late dispersals from Amazonia back into the Andes. These biogeographic events are temporally concordant with an early land bridge between Central and South America (~10-15 MYA) and major landscape changes in Amazonia during the late Miocene and Pliocene, such as the drainage of the Pebas system, the establishment of the Amazon River, and the major orogeny of the northern Andes.
Collapse
Affiliation(s)
- Andrés F Jaramillo
- Pos-Graduação em Ecologia e Evolução da Biodiversidade, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Brazil; Laboratorio de Sistemática de Vertebrados, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Brazil.
| | | | - Juan M Guayasamin
- Laboratorio de Biología Evolutiva, Instituto BIOSFERA-USFQ, Colegio de Ciencias Biológicas y Ambientales COCIBA, Universidad San Francisco de Quito (USFQ), Ecuador; University of North Carolina at Chapel Hill, Department of Biology, USA
| | - Juan C Chaparro
- Museo de Biodiversidad del Perú (MUBI), Peru; Museo de Historia Natural de la Universidad Nacional de San Antonio Abad del Cusco, Peru
| | - Giussepe Gagliardi-Urrutia
- Pos-Graduação em Ecologia e Evolução da Biodiversidade, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Brazil; Laboratorio de Sistemática de Vertebrados, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Brazil; Peruvian Center for Biodiversity and Conservation (PCB&C), Peru; Dirección de Investigación en Diversidad Biológica Terrestre Amazónica, Instituto de Investigaciones de la Amazonía Peruana (IIAP), Peru
| | - Roberto C Gutiérrez
- Museo de Historia Natural de la Universidad Nacional de San Agustín de Arequipa (MUSA), Peru
| | - Isabela Brcko
- Laboratório de Biologia Molecular, Instituto de Ciências Biológicas, Universidade Federal do Pará (UFPA), Brazil
| | - Carles Vilà
- Estación Biológica de Doñana (EBD-CSIC), Spain
| | - Santiago Castroviejo-Fisher
- Pos-Graduação em Ecologia e Evolução da Biodiversidade, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Brazil; Laboratorio de Sistemática de Vertebrados, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Brazil; Department of Herpetology, American Museum of Natural History, USA
| |
Collapse
|
47
|
Sellers S. Agricultural Technology Adoption among Migrant Settlers and Indigenous Populations of the Northern Ecuadorian Amazon: Are Differences Narrowing? JOURNAL OF LAND USE SCIENCE 2020; 14:347-361. [PMID: 32489398 PMCID: PMC7266107 DOI: 10.1080/1747423x.2020.1719225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 12/30/2019] [Indexed: 06/11/2023]
Abstract
We consider trends in the use of modern agricultural inputs of migrant settlers and indigenous populations in the Northern Ecuadorian Amazon and the demographic, socioeconomic, and land use-related factors affecting input use. It is widely believed that the different livelihood strategies and therefore different relationships to the land of indigenous populations and migrant settlers result in different uses of chemical inputs in agriculture. We analyze data from two panel surveys, one of migrant settler households and a separate panel of indigenous households. We find low input use among both types of households, particularly among two of the five main ethnicities of indigenous households in the study region, the Cofán and Waorani. Multivariate statistical models were run separately for each panel, with significant relationships found between several predictors and the use of pesticides and herbicides. Our results highlight continuing differences in land use patterns between households in the NEA.
Collapse
|
48
|
Dahlsjö CAL, Valladares Romero CS, Espinosa Iñiguez CI. Termite Diversity in Ecuador: A Comparison of Two Primary Forest National Parks. JOURNAL OF INSECT SCIENCE (ONLINE) 2020; 20:5698565. [PMID: 31916581 PMCID: PMC6950023 DOI: 10.1093/jisesa/iez129] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Indexed: 06/10/2023]
Abstract
Termites are one of the key ecosystem engineers in tropical forests where they play a major role in decomposition rates, both above and belowground. The interest in termite ecology and biogeography has increased in the last few decades; however, the lack of comparable data has limited the wider impact of termite research. For Ecuador, termite studies are relatively rare and comparable data that are collected using standardized sampling methods are missing. In this study, we aim to 1) provide comparable data of termite species and feeding-group diversity from two primary forests in Ecuador and 2) explore the differences in termite species and feeding-group diversity between the two forest sites. Sampling took place in the national parks of Yasuní and Podocarpus where three belt transects (100 × 2 m) following Jones and Eggleton (2000) were conducted in each forest. We found that termite species richness was higher in Yasuní (56 species) than in Podocarpus (24 species) and that 57% of the sampled termite genera had never previously been recorded in Ecuador. The inter-site species dissimilarity was almost complete (Bray Curtis (±SD), 0.91 ± 0.01), which may have been linked to the difference in tree density and species richness in the two forests. Termite feeding-groups diversity was significantly higher in Yasuní than in Podocarpus with the exception of soil-feeding termites which may have been due to competition between humus- and soil-feeding species.
Collapse
Affiliation(s)
- Cecilia A L Dahlsjö
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, South Parks Road, United Kingdom
| | | | | |
Collapse
|
49
|
Unburnable and Unleakable Carbon in Western Amazon: Using VIIRS Nightfire Data to Map Gas Flaring and Policy Compliance in the Yasuní Biosphere Reserve. SUSTAINABILITY 2019. [DOI: 10.3390/su12010058] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In the Amazon Rainforest, a unique post-carbon plan to mitigate global warming and to protect the exceptional bio-cultural diversity was experimented in 2007–2013 by the Ecuadorian government. To preserve the rainforest ecosystems within the Yasuní-ITT oil block, the release of 410 million metric tons of CO2 would have been avoided. The neologism “yasunization” emerged as an Amazonian narrative on “unburnable carbon” to be replicated worldwide. Considering the unburnable carbon, petroleum-associated gas flaring represents the unleakable part. Flaring is an irrational practice that consists of burning waste gases, representing not only a leak of energy but also a pollution source. The general aim of the paper is to monitor gas flaring as a tool, revealing, at the same time, the implementation of environmental technologies in the oil sector and the compliance of sustainable policies in the Amazon region and the Yasuní Biosphere Reserve. Specific objectives are: (i) identifying and estimating gas flaring over seven years (2012–2018); (ii) mapping new flaring sites; iii) estimating potentially affected areas among ecosystems and local communities. We processed National Oceanic and Atmospheric Administration (NOAA) Nightfire annual dataset, based on the elaboration of imagery from the Visible Infrared Imaging Radiometer Suite (VIIRS) and developed a GIS-based novel simple method to identify new flaring sites from daily detections. We found that 23.5% of gas flaring sites and 18.4% of volumes of all oil industries operating in Ecuador are located within the Yasuní Biosphere Reserve (YBR). Moreover, we detected 34 additional flaring sites not included in the NOAA dataset—12 in the YBR and one in Tiputini field, a key area for biological and cultural diversity conservation. We also found that at least 10 indigenous communities, 18 populated centers and 10 schools are located in the potentially affected area. Gas flaring can be used as a policy indicator to monitor the implementation of sustainable development practices in complex territories.
Collapse
|
50
|
Ritter CD, Faurby S, Bennett DJ, Naka LN, Ter Steege H, Zizka A, Haenel Q, Nilsson RH, Antonelli A. The pitfalls of biodiversity proxies: Differences in richness patterns of birds, trees and understudied diversity across Amazonia. Sci Rep 2019; 9:19205. [PMID: 31844092 PMCID: PMC6915760 DOI: 10.1038/s41598-019-55490-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 11/25/2019] [Indexed: 01/09/2023] Open
Abstract
Most knowledge on biodiversity derives from the study of charismatic macro-organisms, such as birds and trees. However, the diversity of micro-organisms constitutes the majority of all life forms on Earth. Here, we ask if the patterns of richness inferred for macro-organisms are similar for micro-organisms. For this, we barcoded samples of soil, litter and insects from four localities on a west-to-east transect across Amazonia. We quantified richness as Operational Taxonomic Units (OTUs) in those samples using three molecular markers. We then compared OTU richness with species richness of two relatively well-studied organism groups in Amazonia: trees and birds. We find that OTU richness shows a declining west-to-east diversity gradient that is in agreement with the species richness patterns documented here and previously for birds and trees. These results suggest that most taxonomic groups respond to the same overall diversity gradients at large spatial scales. However, our results show a different pattern of richness in relation to habitat types, suggesting that the idiosyncrasies of each taxonomic group and peculiarities of the local environment frequently override large-scale diversity gradients. Our findings caution against using the diversity distribution of one taxonomic group as an indication of patterns of richness across all groups.
Collapse
Affiliation(s)
- Camila D Ritter
- Department of Eukaryotic Microbiology, University of Duisburg-Essen, Universitätsstrasse 5 S05 R04 H83, D-45141, Essen, Germany. .,Gothenburg Global Biodiversity Centre, Box 461, SE-405 30, Göteborg, Sweden. .,Department of Biological and Environmental Sciences, University of Gothenburg, Box 463, SE-405 30, Göteborg, Sweden.
| | - Søren Faurby
- Gothenburg Global Biodiversity Centre, Box 461, SE-405 30, Göteborg, Sweden.,Department of Biological and Environmental Sciences, University of Gothenburg, Box 463, SE-405 30, Göteborg, Sweden
| | - Dominic J Bennett
- Gothenburg Global Biodiversity Centre, Box 461, SE-405 30, Göteborg, Sweden.,Department of Biological and Environmental Sciences, University of Gothenburg, Box 463, SE-405 30, Göteborg, Sweden
| | - Luciano N Naka
- Laboratório de Ornitologia, Departamento de Zoologia, Universidade Federal de Pernambuco, Recife, PE, Brazil
| | - Hans Ter Steege
- Naturalis Biodiversity Center, Leiden, Netherlands.,Systems Ecology, Free University, Amsterdam, Netherlands
| | - Alexander Zizka
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, 04103, Leipzig, Germany
| | - Quiterie Haenel
- Zoological Institute, University of Basel, Vesalgasse 1, CH-4051, Basel, Switzerland
| | - R Henrik Nilsson
- Gothenburg Global Biodiversity Centre, Box 461, SE-405 30, Göteborg, Sweden.,Department of Biological and Environmental Sciences, University of Gothenburg, Box 463, SE-405 30, Göteborg, Sweden
| | - Alexandre Antonelli
- Gothenburg Global Biodiversity Centre, Box 461, SE-405 30, Göteborg, Sweden.,Department of Biological and Environmental Sciences, University of Gothenburg, Box 463, SE-405 30, Göteborg, Sweden.,Royal Botanic Gardens, Kew, TW9 3AE, Richmond, Surrey, UK
| |
Collapse
|