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Crabot J, Mondy CP, Usseglio-Polatera P, Fritz KM, Wood PJ, Greenwood MJ, Bogan MT, Meyer EI, Datry T. A global perspective on the functional responses of stream communities to flow intermittence. Ecography 2021; 44:1511-1523. [PMID: 34720401 PMCID: PMC8554635 DOI: 10.1111/ecog.05697] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Accepted: 07/12/2021] [Indexed: 06/13/2023]
Abstract
The current erosion of biodiversity is a major concern that threatens the ecological integrity of ecosystems and the ecosystem services they provide. Due to global change, an increasing proportion of river networks are drying and changes from perennial to non-perennial flow regimes represent dramatic ecological shifts with potentially irreversible alterations of community and ecosystem dynamics. However, there is minimal understanding of how biological communities respond functionally to drying. Here, we highlight the taxonomic and functional responses of aquatic macroinvertebrate communities to flow intermittence across river networks from three continents, to test predictions from underlying trait-based conceptual theory. We found a significant breakpoint in the relationship between taxonomic and functional richness, indicating higher functional redundancy at sites with flow intermittence higher than 28%. Multiple strands of evidence, including patterns of alpha and beta diversity and functional group membership, indicated that functional redundancy did not compensate for biodiversity loss associated with increasing intermittence, contrary to received wisdom. A specific set of functional trait modalities, including small body size, short life span and high fecundity, were selected with increasing flow intermittence. These results demonstrate the functional responses of river communities to drying and suggest that on-going biodiversity reduction due to global change in drying river networks is threatening their functional integrity. These results indicate that such patterns might be common in these ecosystems, even where drying is considered a predictable disturbance. This highlights the need for the conservation of natural drying regimes of intermittent rivers to secure their ecological integrity.
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Affiliation(s)
| | | | | | - Ken M Fritz
- Office of Research and Development, U.S. Environmental Protection Agency, Cincinnati, Ohio, USA
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Banegas-Medina A, Montes IY, Tzoraki O, Brendonck L, Pinceel T, Diaz G, Arriagada P, Arumi JL, Pedreros P, Figueroa R. Hydrological, Environmental and Taxonomical Heterogeneity during the Transition from Drying to Flowing Conditions in a Mediterranean Intermittent River. Biology (Basel) 2021; 10:316. [PMID: 33918970 DOI: 10.3390/biology10040316] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 03/23/2021] [Accepted: 04/02/2021] [Indexed: 11/24/2022]
Abstract
Simple Summary In recent decades, the riverine ecosystems have been considered to evaluate the aquatic biological diversity, hydrological variations, and ecosystem services. However, climatic change scenarios and anthropogenic interventions are expected to shift from perennial to intermittent rivers with possible repercussion on aquatic biodiversity and human well-being. Our study identified a significant reduction in the Mediterranean intermittent river streamflow with an increase of zero flow days in the last decades. Furthermore, the aquatic invertebrates showed variations during the transition from drying to rewetting with a significantly changing species adapted to the flowing conditions (rheophilic taxa) to non-flowing water. The importance of the disconnected pools as refuges during the dry condition was recognised to protect some endemic species and contribute to the recolonisation after the rewetting events. Include these important aquatic ecosystems in management and conservancy policies is a challenge that will contribute to preserving the freshwater resources and the biological diversity for our future generations. Abstract Intermittent rivers and ephemeral streams (IRES) are increasingly studied because of their often-unique aquatic and terrestrial biodiversity, biogeochemical processes and associated ecosystem services. This study is the first to examine the hydrological, physicochemical and taxonomic variability during the dry-wet transition of an intermittent river in the Chilean Mediterranean Zone. Based on 30-years of river monitoring data and the TREHS tool, the hydrology of the river was characterised. Overall, the river shows a significant reduction in streamflow (−0.031 m3/s per year) and a substantial increase of zero flow days (+3.5 days per year). During the transition of hydrological states, variations were observed in the environmental conditions and invertebrate communities. During the drying phase, abundance, richness, and diversity were highest, while species turn-over was highest during base flow conditions. The disconnected pools and the flow resumption phases were characterised by high proportions of lentic taxa and non-insects, such as the endemic species of bivalves, gastropods, and crustaceans, highlighting the relevance of disconnected pools as refuges. Future climatic change scenarios are expected to impact further the hydrology of IRES, which could result in the loss of biodiversity. Biomonitoring and conservation programmes should acknowledge these important ecosystems.
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Shumilova O, Zak D, Datry T, von Schiller D, Corti R, Foulquier A, Obrador B, Tockner K, Allan DC, Altermatt F, Arce MI, Arnon S, Banas D, Banegas‐Medina A, Beller E, Blanchette ML, Blanco‐Libreros JF, Blessing J, Boëchat IG, Boersma K, Bogan MT, Bonada N, Bond NR, Brintrup K, Bruder A, Burrows R, Cancellario T, Carlson SM, Cauvy‐Fraunié S, Cid N, Danger M, de Freitas Terra B, Girolamo AMD, del Campo R, Dyer F, Elosegi A, Faye E, Febria C, Figueroa R, Four B, Gessner MO, Gnohossou P, Cerezo RG, Gomez‐Gener L, Graça MA, Guareschi S, Gücker B, Hwan JL, Kubheka S, Langhans SD, Leigh C, Little CJ, Lorenz S, Marshall J, McIntosh A, Mendoza‐Lera C, Meyer EI, Miliša M, Mlambo MC, Moleón M, Negus P, Niyogi D, Papatheodoulou A, Pardo I, Paril P, Pešić V, Rodriguez‐Lozano P, Rolls RJ, Sanchez‐Montoya MM, Savić A, Steward A, Stubbington R, Taleb A, Vorste RV, Waltham N, Zoppini A, Zarfl C. Simulating rewetting events in intermittent rivers and ephemeral streams: A global analysis of leached nutrients and organic matter. Glob Chang Biol 2019; 25:1591-1611. [PMID: 30628191 PMCID: PMC6850495 DOI: 10.1111/gcb.14537] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Accepted: 10/07/2018] [Indexed: 06/01/2023]
Abstract
Climate change and human pressures are changing the global distribution and the extent of intermittent rivers and ephemeral streams (IRES), which comprise half of the global river network area. IRES are characterized by periods of flow cessation, during which channel substrates accumulate and undergo physico-chemical changes (preconditioning), and periods of flow resumption, when these substrates are rewetted and release pulses of dissolved nutrients and organic matter (OM). However, there are no estimates of the amounts and quality of leached substances, nor is there information on the underlying environmental constraints operating at the global scale. We experimentally simulated, under standard laboratory conditions, rewetting of leaves, riverbed sediments, and epilithic biofilms collected during the dry phase across 205 IRES from five major climate zones. We determined the amounts and qualitative characteristics of the leached nutrients and OM, and estimated their areal fluxes from riverbeds. In addition, we evaluated the variance in leachate characteristics in relation to selected environmental variables and substrate characteristics. We found that sediments, due to their large quantities within riverbeds, contribute most to the overall flux of dissolved substances during rewetting events (56%-98%), and that flux rates distinctly differ among climate zones. Dissolved organic carbon, phenolics, and nitrate contributed most to the areal fluxes. The largest amounts of leached substances were found in the continental climate zone, coinciding with the lowest potential bioavailability of the leached OM. The opposite pattern was found in the arid zone. Environmental variables expected to be modified under climate change (i.e. potential evapotranspiration, aridity, dry period duration, land use) were correlated with the amount of leached substances, with the strongest relationship found for sediments. These results show that the role of IRES should be accounted for in global biogeochemical cycles, especially because prevalence of IRES will increase due to increasing severity of drying events.
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Affiliation(s)
- Oleksandra Shumilova
- Leibniz‐Institute of Freshwater Ecology and Inland Fisheries (IGB)BerlinGermany
- Institute of BiologyFreie Universität Berlin (FU)BerlinGermany
- Department of CivilEnvironmental and Mechanical EngineeringTrento UniversityTrentoItaly
| | - Dominik Zak
- Institute of BiologyFreie Universität Berlin (FU)BerlinGermany
- Institute of Landscape Ecology and Site EvaluationUniversity of RostockRostockGermany
- Department of BioscienceAarhus UniversitySilkeborgDenmark
| | - Thibault Datry
- IRSTEAUR RIVERLYCentre de Lyon‐VilleurbanneVilleurbanne CedexFrance
| | - Daniel von Schiller
- Department of Plant Biology and EcologyFaculty of Science and TechnologyUniversity of the Basque Country (UPV/EHU)BilbaoSpain
| | - Roland Corti
- IRSTEAUR RIVERLYCentre de Lyon‐VilleurbanneVilleurbanne CedexFrance
| | - Arnaud Foulquier
- Laboratoire d’Écologie Alpine (LECA)UMR CNRS‐UGA‐USMB 5553Université Grenoble AlpesGrenobleFrance
| | - Biel Obrador
- Department of Evolutionary Biology, Ecology and Environmental SciencesFaculty of BiologyBiodiversity Research Institute (IRBIO)University of BarcelonaBarcelonaSpain
| | - Klement Tockner
- Leibniz‐Institute of Freshwater Ecology and Inland Fisheries (IGB)BerlinGermany
- Institute of BiologyFreie Universität Berlin (FU)BerlinGermany
- Austrian Science Fund (FWF)ViennaAustria
| | | | - Florian Altermatt
- Department of Evolutionary Biology and Environmental StudiesUniversity of ZurichZürichSwitzerland
| | - María Isabel Arce
- Leibniz‐Institute of Freshwater Ecology and Inland Fisheries (IGB)BerlinGermany
- Centre of Edaphology and Applied Biology of Segura (CEBAS‐CSIC)MurciaSpain
| | - Shai Arnon
- Zuckerberg Institute for Water ResearchThe Jacob Blaustein Institutes for Desert ResearchBen‐Gurion University of the NegevBeershebaIsrael
| | - Damien Banas
- Université de Lorraine ‐ UR AFPAVandoeuvre‐Les‐NancyFrance
| | - Andy Banegas‐Medina
- Faculty of Environmental Science and EULA‐Chile CenterUniversidad de ConcepciónConcepciónChile
| | - Erin Beller
- Department of GeographyUniversity of CaliforniaBerkeleyCalifornia
| | - Melanie L. Blanchette
- Mine Water and Environment Research Centre (MiWER)School of ScienceEdith Cowan UniversityPerthAustralia
| | | | - Joanna Blessing
- Department of Environment and ScienceQueensland GovernmentBrisbaneQldAustralia
| | | | - Kate Boersma
- Department of BiologyUniversity of San DiegoSan DiegoCalifornia
| | - Michael T. Bogan
- School of Natural Resources and the EnvironmentUniversity of ArizonaTucsonArizona
| | - Núria Bonada
- Grup de Recerca Freshwater Ecology, Hydrology and Management (FEHM)Departament de Biologia EvolutivaEcologia i Ciències AmbientalsInstitut de Recerca de la Biodiversitat (IRBio)Universitat de BarcelonaBarcelonaSpain
| | - Nick R. Bond
- Centre for Freshwater EcosystemsLa Trobe UniversityWodongaVic.Australia
| | - Kate Brintrup
- Faculty of Environmental Science and EULA‐Chile CenterUniversidad de ConcepciónConcepciónChile
| | - Andreas Bruder
- Laboratory of Applied MicrobiologyUniversity of Applied Sciences and Arts of Southern SwitzerlandBellinzonaSwitzerland
| | - Ryan Burrows
- Australian Rivers InstituteGriffith UniversityNathanQldAustralia
| | - Tommaso Cancellario
- Department of Environmental BiologyBiodiversity Data Analytics and Environmental Quality GroupUniversity of NavarraPamplonaSpain
| | - Stephanie M. Carlson
- Department of Environmental Science, Policy, and ManagementUniversity of CaliforniaBerkeleyCalifornia
| | | | - Núria Cid
- Grup de Recerca Freshwater Ecology, Hydrology and Management (FEHM)Departament de Biologia EvolutivaEcologia i Ciències AmbientalsInstitut de Recerca de la Biodiversitat (IRBio)Universitat de BarcelonaBarcelonaSpain
| | | | | | - Anna Maria De Girolamo
- Water Research Institute – National Research Council (IRSA‐CNR)Montelibretti (Rome)Italy
| | - Ruben del Campo
- Leibniz‐Institute of Freshwater Ecology and Inland Fisheries (IGB)BerlinGermany
- Department of Ecology and HydrologyRegional Campus of International Excellence ‘Campus Mare Nostrum’ – University of MurciaMurciaSpain
| | - Fiona Dyer
- Institute for Applied EcologyUniversity of CanberraBruceCanberra ACTAustralia
| | - Arturo Elosegi
- Department of Plant Biology and EcologyFaculty of Science and TechnologyUniversity of the Basque Country (UPV/EHU)BilbaoSpain
| | - Emile Faye
- Centre International de Recherche en Agronomie pour le DéveloppementCIRADUPR HortSysMontpellierFrance
| | - Catherine Febria
- School of Biological SciencesUniversity of CanterburyChristchurchNew Zealand
- Great Lakes Institute for Environmental ResearchUniversity of WindsorWindsorCanada
| | - Ricardo Figueroa
- Faculty of Environmental Science and EULA‐Chile CenterUniversidad de ConcepciónConcepciónChile
| | - Brian Four
- INRAUAR 1275 DEPT EFPACentre de recherche de NancyChampenouxFrance
| | - Mark O. Gessner
- Leibniz‐Institute of Freshwater Ecology and Inland Fisheries (IGB)BerlinGermany
- Department of EcologyBerlin Institute of Technology (TU Berlin)BerlinGermany
| | - Pierre Gnohossou
- Faculté d'AgronomieDépartement d'Aménagement et de Gestion des Ressources NaturellesUniversité de ParakouParakouBenin
| | - Rosa Gómez Cerezo
- Department of Ecology and HydrologyRegional Campus of International Excellence ‘Campus Mare Nostrum’ – University of MurciaMurciaSpain
| | - Lluís Gomez‐Gener
- Department of Ecology and Environmental ScienceUmeå UniversityUmeåSweden
| | - Manuel A.S. Graça
- MARE – Marine and Environmental Sciences CentreDepartment of Life SciencesUniversity of CoimbraCoimbraPortugal
| | - Simone Guareschi
- Department of Ecology and HydrologyRegional Campus of International Excellence ‘Campus Mare Nostrum’ – University of MurciaMurciaSpain
| | - Björn Gücker
- Department of GeosciencesFederal University of São João del‐ReiSão João del‐ReiBrazil
| | - Jason L. Hwan
- Department of Environmental Science, Policy, and ManagementUniversity of CaliforniaBerkeleyCalifornia
| | | | - Simone Daniela Langhans
- Department of ZoologyUniversity of OtagoDunedinNew Zealand
- BC3‐Basque Centre for Climate ChangeLeioaSpain
| | - Catherine Leigh
- Australian Rivers InstituteGriffith UniversityNathanQldAustralia
- ARC Centre of Excellence for Mathematical & Statistical Frontiers (ACEMS) and Institute for Future EnvironmentsSchool of Mathematical SciencesQueensland University of TechnologyBrisbaneQldAustralia
| | - Chelsea J. Little
- Department of Evolutionary Biology and Environmental StudiesUniversity of ZurichZürichSwitzerland
- Department of Aquatic Ecology, EawagThe Swiss Federal Institute of Aquatic Science and TechnologyDübendorfSwitzerland
| | - Stefan Lorenz
- Institute for Ecological ChemistryPlant Analysis and Stored Product ProtectionJulius‐Kuehn‐InstituteBerlinGermany
| | - Jonathan Marshall
- Department of Environment and ScienceQueensland GovernmentBrisbaneQldAustralia
- Australian Rivers InstituteGriffith UniversityNathanQldAustralia
| | - Angus McIntosh
- School of Biological SciencesUniversity of CanterburyChristchurchNew Zealand
| | - Clara Mendoza‐Lera
- IRSTEAUR RIVERLYCentre de Lyon‐VilleurbanneVilleurbanne CedexFrance
- Department of Freshwater ConservationBTU Cottbus‐SenftenbergBad SaarowGermany
| | | | - Marko Miliša
- Department of BiologyFaculty of ScienceUniversity of ZagrebZagrebCroatia
| | - Musa C. Mlambo
- Department of Freshwater InvertebratesAlbany MuseumAffiliated Research Institute of Rhodes UniversityGrahamstownSouth Africa
| | - Marcos Moleón
- Department of ZoologyUniversity of GranadaGranadaSpain
| | - Peter Negus
- Department of Environment and ScienceQueensland GovernmentBrisbaneQldAustralia
| | - Dev Niyogi
- Missouri University of Science and TechnologyRollaMissouri
| | | | - Isabel Pardo
- Departamento de Ecología y Biología AnimalUniversidad de VigoVigoSpain
| | - Petr Paril
- Department of Botany and ZoologyFaculty of ScienceMasaryk UniversityBrnoCzech Republic
| | - Vladimir Pešić
- Department of BiologyUniversity of MontenegroPodgoricaMontenegro
| | - Pablo Rodriguez‐Lozano
- Department of Environmental Science, Policy, and ManagementUniversity of CaliforniaBerkeleyCalifornia
| | - Robert J. Rolls
- School of Environmental and Rural ScienceUniversity of New EnglandArmidaleNSWAustralia
| | - Maria Mar Sanchez‐Montoya
- Department of Ecology and HydrologyRegional Campus of International Excellence ‘Campus Mare Nostrum’ – University of MurciaMurciaSpain
| | - Ana Savić
- Department of Biology and EcologyFaculty of Sciences and MathematicsUniversity of NišNišSerbia
| | - Alisha Steward
- Department of Environment and ScienceQueensland GovernmentBrisbaneQldAustralia
- Australian Rivers InstituteGriffith UniversityNathanQldAustralia
| | | | - Amina Taleb
- Laboratoire d’Écologie et Gestion des Ecosystèmes Naturels (LECGEN)University of TlemcenTlemcenAlgeria
| | - Ross Vander Vorste
- Department of Environmental Science, Policy, and ManagementUniversity of CaliforniaBerkeleyCalifornia
| | - Nathan Waltham
- TropWATER (Centre for Tropical Water and Aquatic Ecosystem Research)College of Science and EngineeringJames Cook UniversityTownsvilleQldAustralia
| | - Annamaria Zoppini
- Water Research Institute – National Research Council (IRSA‐CNR)Montelibretti (Rome)Italy
| | - Christiane Zarfl
- Center for Applied GeosciencesEberhard Karls Universität TübingenTübingenGermany
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