Spatial and temporal heterogeneity in a subtropical reservoir and their effects over the benthic macroinvertebrate community
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S2179-975X2014000300010 http://hdl.handle.net/11449/212218 |
Resumo: | AIM: The objective of the present study was to demonstrate the influences of the environment spatial heterogeneity on benthic macroinvertebrates considering transverse and longitudinal gradients as also seasonality. METHODS: Four samplings were performed: two in the wet and two in the dry season in the riverine, transitional and lacustrine zones in the littoral and profundal regions of Itupararanga reservoir, SP, Brazil. Abiotic characterization of the water and of the sediment was performed. The biotic characterization was based on richness, dominance, diversity, and density of organisms, as well as on the relative abundance of predominant taxa. Two-way ANOSIM analyses were performed for both biotic and abiotic components, in order to test the significance of the differences in the longitudinal and transverse directions as well as of the differences between seasons. RESULTS: Compartmentalization was present in both directions, longitudinal and transverse. In a general way, the littoral region presented higher diversity values when compared with the profundal region, and the riverine zone presented high densities and high percentage of taxons, which usually indicate organic pollution. The differentiation between the transitional and lacustrine zones was determined mainly by taxonomic composition. Seasonality was also observed and the transportation of small particles, the entrance of nutrients, and the presence of macrophytes were considered as determinants for differentiation. CONCLUSIONS: Together, these results demonstrate the responses of benthic macroinvertebrate communities considering distinct sources of variation: longitudinal heterogeneity, determined by the increasing distance from the forming rivers that leads to a gradient of physical and chemical conditions; transverse heterogeneity, determined by the proximity with the land environment and depth differences. Seasonal heterogeneity was recorded during the period of this research and it was determined by variations in water flow, in temperature, and in the carrying of matter, nutrients and organisms. |
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Spatial and temporal heterogeneity in a subtropical reservoir and their effects over the benthic macroinvertebrate communityHeterogeneidade espacial e temporal de reservatório subtropical e seus efeitos sobre a comunidade de macroinvertebrados bentônicosreservoirdiversity, neotropicscompartmentalizationreservatóriodiversidaderegião neotropicalcompartimentalizaçãoAIM: The objective of the present study was to demonstrate the influences of the environment spatial heterogeneity on benthic macroinvertebrates considering transverse and longitudinal gradients as also seasonality. METHODS: Four samplings were performed: two in the wet and two in the dry season in the riverine, transitional and lacustrine zones in the littoral and profundal regions of Itupararanga reservoir, SP, Brazil. Abiotic characterization of the water and of the sediment was performed. The biotic characterization was based on richness, dominance, diversity, and density of organisms, as well as on the relative abundance of predominant taxa. Two-way ANOSIM analyses were performed for both biotic and abiotic components, in order to test the significance of the differences in the longitudinal and transverse directions as well as of the differences between seasons. RESULTS: Compartmentalization was present in both directions, longitudinal and transverse. In a general way, the littoral region presented higher diversity values when compared with the profundal region, and the riverine zone presented high densities and high percentage of taxons, which usually indicate organic pollution. The differentiation between the transitional and lacustrine zones was determined mainly by taxonomic composition. Seasonality was also observed and the transportation of small particles, the entrance of nutrients, and the presence of macrophytes were considered as determinants for differentiation. CONCLUSIONS: Together, these results demonstrate the responses of benthic macroinvertebrate communities considering distinct sources of variation: longitudinal heterogeneity, determined by the increasing distance from the forming rivers that leads to a gradient of physical and chemical conditions; transverse heterogeneity, determined by the proximity with the land environment and depth differences. Seasonal heterogeneity was recorded during the period of this research and it was determined by variations in water flow, in temperature, and in the carrying of matter, nutrients and organisms.OBJETIVO: O objetivo do presente estudo foi demonstrar a influência da heterogeneidade espacial sobre os macroinvertebrados bentônicos considerando‑se gradientes ambientais longitudinais e transversais bem como a sazonalidade. MÉTODOS: Quatro coletas foram realizadas: duas durante a estação chuvosa e duas na estação seca compreendendo as zonas de rio, de transição e de lago bem como as regiões litorâneas e profundas do reservatório de Itupararanga, SP, Brasil. Foram realizadas as caracterizações abióticas da água e do sedimento. A caracterização biótica foi baseada na riqueza, dominância, diversidade e densidade de organismos, bem como na abundância relativa de táxons predominantes. Duas análises ANOSIM de entrada dupla foram realizadas considerando-se os componentes bióticos e abióticos, a fim de testar a heterogeneidade espacial longitudinal e transversal, bem como para testar diferenças entre as estações seca e chuvosa. RESULTADOS: Foi observada a compartimentalização do reservatório em ambas as direções: longitudinal e transversal. De uma maneira geral, a região litorânea apresentou valores de diversidade mais elevados quando comparados com a região profunda. Além disso, foram registrados, na zona de rio, maiores valores para densidade geral bem como proporção de táxons associados às condições de poluição orgânica. A distinção entre as zonas de transição e de lago foi determinada principalmente pela composição taxonômica. Também foram observados efeitos da sazonalidade sobre os organismos e o transporte de pequenas partículas, a entrada de nutrientes e a presença de macrófitas foram considerados determinantes. CONCLUSÕES: Em conjunto, estes resultados demonstraram respostas das comunidades de macroinvertebrados bentônicos em relação a fontes distintas de variação: heterogeneidade longitudinal, determinada pelo aumento da distância dos rios que formam, que leva a um gradiente de condições físicas e químicas; heterogeneidade transversal, determinada pela proximidade com o ambiente terrestre e as diferenças de profundidade. Além destas, foi verificada ainda a heterogeneidade sazonal no período desta pesquisa, determinada por variações no fluxo de água, na temperatura e no transporte de matéria, nutrientes e organismos.Universidade Federal de São Carlos, Departamento de BiologiaUniversidade Estadual Paulista, Laboratório de LimnologiaUniversidade de São Paulo, Escola de Engenharia de São CarlosUniversidade Estadual Paulista, Laboratório de LimnologiaAssociação Brasileira de LimnologiaUniversidade Federal de São CarlosUniversidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Beghelli, Frederico Guilherme De Souza [UNESP]Santos, André Cordeiro Alves DosUrso-guimarães, Maria VirgíniaCalijuri, Maria Do Carmo2021-07-14T10:36:29Z2021-07-14T10:36:29Z2014-09info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article306-317application/pdfhttp://dx.doi.org/10.1590/S2179-975X2014000300010Acta Limnologica Brasiliensia. Rio Claro, SP, Brazil: Associação Brasileira de Limnologia, v. 26, n. 3, p. 306-317, 2014.2179-975Xhttp://hdl.handle.net/11449/21221810.1590/S2179-975X2014000300010S2179-975X2014000300010S2179-975X2014000300010.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengActa Limnologica Brasiliensiainfo:eu-repo/semantics/openAccess2023-10-15T06:07:48Zoai:repositorio.unesp.br:11449/212218Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:01:37.744424Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Spatial and temporal heterogeneity in a subtropical reservoir and their effects over the benthic macroinvertebrate community Heterogeneidade espacial e temporal de reservatório subtropical e seus efeitos sobre a comunidade de macroinvertebrados bentônicos |
title |
Spatial and temporal heterogeneity in a subtropical reservoir and their effects over the benthic macroinvertebrate community |
spellingShingle |
Spatial and temporal heterogeneity in a subtropical reservoir and their effects over the benthic macroinvertebrate community Beghelli, Frederico Guilherme De Souza [UNESP] reservoir diversity, neotropics compartmentalization reservatório diversidade região neotropical compartimentalização |
title_short |
Spatial and temporal heterogeneity in a subtropical reservoir and their effects over the benthic macroinvertebrate community |
title_full |
Spatial and temporal heterogeneity in a subtropical reservoir and their effects over the benthic macroinvertebrate community |
title_fullStr |
Spatial and temporal heterogeneity in a subtropical reservoir and their effects over the benthic macroinvertebrate community |
title_full_unstemmed |
Spatial and temporal heterogeneity in a subtropical reservoir and their effects over the benthic macroinvertebrate community |
title_sort |
Spatial and temporal heterogeneity in a subtropical reservoir and their effects over the benthic macroinvertebrate community |
author |
Beghelli, Frederico Guilherme De Souza [UNESP] |
author_facet |
Beghelli, Frederico Guilherme De Souza [UNESP] Santos, André Cordeiro Alves Dos Urso-guimarães, Maria Virgínia Calijuri, Maria Do Carmo |
author_role |
author |
author2 |
Santos, André Cordeiro Alves Dos Urso-guimarães, Maria Virgínia Calijuri, Maria Do Carmo |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal de São Carlos Universidade Estadual Paulista (Unesp) Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Beghelli, Frederico Guilherme De Souza [UNESP] Santos, André Cordeiro Alves Dos Urso-guimarães, Maria Virgínia Calijuri, Maria Do Carmo |
dc.subject.por.fl_str_mv |
reservoir diversity, neotropics compartmentalization reservatório diversidade região neotropical compartimentalização |
topic |
reservoir diversity, neotropics compartmentalization reservatório diversidade região neotropical compartimentalização |
description |
AIM: The objective of the present study was to demonstrate the influences of the environment spatial heterogeneity on benthic macroinvertebrates considering transverse and longitudinal gradients as also seasonality. METHODS: Four samplings were performed: two in the wet and two in the dry season in the riverine, transitional and lacustrine zones in the littoral and profundal regions of Itupararanga reservoir, SP, Brazil. Abiotic characterization of the water and of the sediment was performed. The biotic characterization was based on richness, dominance, diversity, and density of organisms, as well as on the relative abundance of predominant taxa. Two-way ANOSIM analyses were performed for both biotic and abiotic components, in order to test the significance of the differences in the longitudinal and transverse directions as well as of the differences between seasons. RESULTS: Compartmentalization was present in both directions, longitudinal and transverse. In a general way, the littoral region presented higher diversity values when compared with the profundal region, and the riverine zone presented high densities and high percentage of taxons, which usually indicate organic pollution. The differentiation between the transitional and lacustrine zones was determined mainly by taxonomic composition. Seasonality was also observed and the transportation of small particles, the entrance of nutrients, and the presence of macrophytes were considered as determinants for differentiation. CONCLUSIONS: Together, these results demonstrate the responses of benthic macroinvertebrate communities considering distinct sources of variation: longitudinal heterogeneity, determined by the increasing distance from the forming rivers that leads to a gradient of physical and chemical conditions; transverse heterogeneity, determined by the proximity with the land environment and depth differences. Seasonal heterogeneity was recorded during the period of this research and it was determined by variations in water flow, in temperature, and in the carrying of matter, nutrients and organisms. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-09 2021-07-14T10:36:29Z 2021-07-14T10:36:29Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/S2179-975X2014000300010 Acta Limnologica Brasiliensia. Rio Claro, SP, Brazil: Associação Brasileira de Limnologia, v. 26, n. 3, p. 306-317, 2014. 2179-975X http://hdl.handle.net/11449/212218 10.1590/S2179-975X2014000300010 S2179-975X2014000300010 S2179-975X2014000300010.pdf |
url |
http://dx.doi.org/10.1590/S2179-975X2014000300010 http://hdl.handle.net/11449/212218 |
identifier_str_mv |
Acta Limnologica Brasiliensia. Rio Claro, SP, Brazil: Associação Brasileira de Limnologia, v. 26, n. 3, p. 306-317, 2014. 2179-975X 10.1590/S2179-975X2014000300010 S2179-975X2014000300010 S2179-975X2014000300010.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Acta Limnologica Brasiliensia |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
306-317 application/pdf |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Limnologia |
publisher.none.fl_str_mv |
Associação Brasileira de Limnologia |
dc.source.none.fl_str_mv |
SciELO reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128447835275264 |