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Pakulnicka J, Buczyński P, Buczyńska E, Stępień E, Szlauer-Łukaszewska A, Stryjecki R, Bańkowska A, Pešić V, Filip E, Zawal A. Sequentiality of beetle communities in the longitudinal gradient of a lowland river in the context of the river continuum concept. PeerJ 2022; 10:e13232. [PMID: 35402090 PMCID: PMC8992647 DOI: 10.7717/peerj.13232] [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: 10/04/2021] [Accepted: 03/16/2022] [Indexed: 01/12/2023] Open
Abstract
The main goal of the study was to recognize the mechanisms underlying assemblage structuring of aquatic beetle fauna inhabiting a medium-sized, lowland river exposed to anthropogenic pressures. An attempt was made to identify the impact of numerous abiotic factors on how beetle communities are formed, with particular emphasis on geomorphological and landscape-related factors, which tend to be omitted from many studies of aquatic organisms. Our intention was to refer the results of our study to the general assumptions of the River Continuum Concept. Field studies were conducted in 2010, at 13 sites located along the Krąpiel River (north-western Poland). In total, 3,269 beetles were captured, representing 120 species and five ecological groups: crenophiles, rheophiles, rheobionts, stagnobionts a and stagnobionts b, which differ in environmental preferences. The core of the identified fauna was composed of stagnobionts, while rheophiles and rheobionts accounted for only 20% of the entire collected material. The formation of beetle assemblages was affected both by local factors, with an impact on aquatic environments, and by geomorphological factors, influencing a larger catchment. This was reflected in the high degree of conformity between dendrograms presenting similarities in the fauna at the studied sites, including the clustering of sites based on the abiotic factors that differentiated these sites. The presence of buffer zones, surfaces of patches denoted as "marshes" (marshland surface), "shrubs" (shrub surface), and "forests" (forest surface), and the distance to those patches seem to be the most important landscape factors affecting beetle communities. Of the factors influencing the aquatic environment, the following exerted the strongest effect: insolation, vegetation cover, presence of organic matter and BOD5, and anthropogenic pressure. The changes in assemblages of beetles determined in our study in the particular sections of the river course were a consequence of the effects of both internal factors and external ones, originating from the entire river's catchment, which is in accord with the basic assumptions of the RCC.
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Affiliation(s)
- Joanna Pakulnicka
- Department of Ecology and Environmental Protection, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Paweł Buczyński
- Department of Zoology and Nature Protection, Maria Curie-Skłodowska University, Lublin, Poland
| | - Edyta Buczyńska
- Departament of Zoology and Animal Ecology, University of Life Sciences, Lublin, Poland
| | - Edyta Stępień
- Institute of Marine and Environmental Science, Centre for Molecular Biology and Biotechnology, University of Szczecin, Szczecin, Poland
| | - Agnieszka Szlauer-Łukaszewska
- Institute of Marine and Environmental Science, Centre for Molecular Biology and Biotechnology, University of Szczecin, Szczecin, Poland
| | - Robert Stryjecki
- Departament of Zoology and Animal Ecology, University of Life Sciences, Lublin, Poland
| | | | - Vladimir Pešić
- Department of Biology, University of Montenegro, Podgorica, Montenegro
| | - Ewa Filip
- Institute of Biology, University of Szczecin, Szczecin, Poland
| | - Andrzej Zawal
- Institute of Marine and Environmental Science, Centre for Molecular Biology and Biotechnology, University of Szczecin, Szczecin, Poland
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Mauad M, Siri A, Donato M. Does Type of Substratum Affects Chironomid Larvae Assemblage Composition? A Study in a River Catchment in Northern Patagonia, Argentina. NEOTROPICAL ENTOMOLOGY 2017; 46:18-28. [PMID: 27541752 DOI: 10.1007/s13744-016-0429-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Accepted: 07/08/2016] [Indexed: 06/06/2023]
Abstract
Chironomid larvae assemblages were investigated at seven sampling stations in relation to stream habitat type in the Challhuaco-Ñireco river system located in the Nahuel Huapi National Park, in the North-Western part of Rio Negro Province, Argentina. A total of 2229 individuals were sampled and 43 Chironomidae taxa were recorded with Orthocladiinae (29) being the best represented subfamily, followed by Diamesinae (5), Tanypodinae (3), Podonominae (3) and Chironominae (3). Stictocladius spF, Cricotopus (Paratrichocladius) sp6, Cricotopus sp2, Cricotopus sp3 and Parapsectrocladius sp2 were the most abundant taxa. Sites near the source of the river system were dominated by Podonomus sp., Limnophyes sp., Parapsectrocladius sp. and Stictocladius spF, whereas sites close to the river mouth were dominated by Diamesinae sp5 and Cricotopus sp. Rank/abundance plots show that all the analysed sites displayed dominance of some species. Stictocladius spF, Cricotopus sp2, Cricotopus sp3, Cricotopus (Paratrichocladius) sp6, Parapsectrocladius sp. and Limnophyes sp. resulted as dominant species, or being part of a group of dominant species, at least in one sample. Eleven taxa were associated with habitats related with riffle areas and stable substrates with filamentous algae. Species-environment relationships were examined using ordination analysis. Elevation was the most significant environmental variable that explained 22% of the total variability of the chironomid assemblages, showing stronger relationships among sites within an altitudinal gradient than among habitat type. Abundance of chironomids increased from headwaters to the outflow in Nahuel Huapi Lake responding to an altitude gradient as well as some environmental factors such as coarse matter and nutrient concentrations.
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Affiliation(s)
- M Mauad
- Instituto de Limnología "Dr. Raúl A. Ringuelet" (ILPLA) (CONICET, UNLP) La Plata, ILPLA, Boulevard 122 and 60 S/N, La Plata, 1900, Argentina.
| | - A Siri
- Instituto de Limnología "Dr. Raúl A. Ringuelet" (ILPLA) (CONICET, UNLP) La Plata, ILPLA, Boulevard 122 and 60 S/N, La Plata, 1900, Argentina
| | - M Donato
- Instituto de Limnología "Dr. Raúl A. Ringuelet" (ILPLA) (CONICET, UNLP) La Plata, ILPLA, Boulevard 122 and 60 S/N, La Plata, 1900, Argentina
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Silveira LS, Rosa BFJV, Gonçalves EA, Alves RG. Influence of Pools and Riffles on Chironomidae Diversity in Headwater Streams of the Atlantic Forest. NEOTROPICAL ENTOMOLOGY 2015; 44:423-429. [PMID: 26243331 DOI: 10.1007/s13744-015-0305-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Accepted: 05/26/2015] [Indexed: 06/04/2023]
Abstract
Studies on mesohabitat scale have been used to shed light on the ecology and distribution of chironomid larvae in small streams. Thus, the objective of the present study was to examine the diversity and distribution of the Chironomidae assemblage on the mesohabitat scale in three streams located in different preserved areas of southeastern Brazil. In each stream, litter samples were obtained in the dry season of 2010 in ten pools and ten riffles with a Surber sampler (area 0.04 m(2); mesh size 0.21 mm). The abundance was similar among streams and between mesohabitats, while the estimated richness was highest in riffles. There was a difference in the composition of the Chironomidae assemblages between the mesohabitats, although the litter composition was similar between them, indicating the importance of current speed on the distribution of the taxa. The dispersion of the sample units (β-diversity) of riffles and pools was similar, although it was different among the three streams. The results of this study provide further evidence of the importance of habitat heterogeneity within streams as a generator of diversity for Chironomidae in tropical lotic systems.
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Affiliation(s)
- L S Silveira
- Lab de Invertebrados Bentônicos, Depto de Zoologia, Instituto de Ciências Biológicas, Univ Federal de Juiz de Fora, Rua José Lourenço Kelmer, Campus Universitário, São Pedro, Juiz de Fora, MG, 36037-000, Brasil,
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Epele LB, Miserendino ML. Temporal dynamics of invertebrate and aquatic plant communities at three intermittent ponds in livestock grazed Patagonian wetlands. J NAT HIST 2015. [DOI: 10.1080/00222933.2015.1062930] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Rosa BFJV, Dias-Silva MVD, Alves RG. Composition and structure of the Chironomidae (Insecta: Diptera) community associated with bryophytes in a first-order stream in the Atlantic forest, Brazil. NEOTROPICAL ENTOMOLOGY 2013; 42:15-21. [PMID: 23949708 DOI: 10.1007/s13744-012-0086-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Accepted: 08/11/2012] [Indexed: 06/02/2023]
Abstract
This study describes the structure of the Chironomidae community associated with bryophytes in a first-order stream located in a biological reserve of the Atlantic Forest, during two seasons. Samples of bryophytes adhered to rocks along a 100-m stretch of the stream were removed with a metal blade, and 200-mL pots were filled with the samples. The numerical density (individuals per gram of dry weight), Shannon's diversity index, Pielou's evenness index, the dominance index (DI), and estimated richness were calculated for each collection period (dry and rainy). Linear regression analysis was employed to test the existence of a correlation between rainfall and the individual's density and richness. The high numerical density and richness of Chironomidae taxa observed are probably related to the peculiar conditions of the bryophyte habitat. The retention of larvae during periods of higher rainfall contributed to the high density and richness of Chironomidae larvae. The rarefaction analysis showed higher richness in the rainy season related to the greater retention of food particles. The data from this study show that bryophytes provide stable habitats for the colonization by and refuge of Chironomidae larvae, mainly under conductions of faster water flow and higher precipitation.
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Affiliation(s)
- B F J V Rosa
- Lab de Invertebrados Bentônicos, Instituto de Ciências Biológicas, Univ Federal de Juiz de Fora, Juiz de Fora, MG, Brasil.
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