Long-term effects of a rural landscape on the structure and trophic organization of a fish assemblage
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Data de Publicação: | 2019 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/s2179-975x3217 http://hdl.handle.net/11449/190191 |
Resumo: | Aim: We investigated the long-term effects of a rural landscape on the structure and trophic organization of a fish assemblage. Methods: We compared environmental data and data from fish assemblage structure and trophic organization sampled in a stream located in a rural area, within a time gap of 20 years. Results: We observed only punctual changes in the environmental variables and fish structure, which may not be related to the rural landscape. In fish diet, insectivory remained predominant in all sample periods. However, when we analyzed the groups of hexapods consumed by the fish species, we found a substitution of Ephemeroptera and Trichoptera by Diptera over time. Conclusions: Although the fish assemblage structure was not affected, the insectivore diet analysis showed that the stream stretch could be in an ongoing process of environmental quality loss, once the simplification in the macroinvertebrates assemblage structure over time is indicative of environmental degradation. |
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Repositório Institucional da UNESP |
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Long-term effects of a rural landscape on the structure and trophic organization of a fish assemblageEfeitos de longo prazo de uma paisagem rural sobre a estrutura e organizaçao trófica de uma assembleia de peixesDietFeeding habitsRural landscapeSeasonal variationTropical streamAim: We investigated the long-term effects of a rural landscape on the structure and trophic organization of a fish assemblage. Methods: We compared environmental data and data from fish assemblage structure and trophic organization sampled in a stream located in a rural area, within a time gap of 20 years. Results: We observed only punctual changes in the environmental variables and fish structure, which may not be related to the rural landscape. In fish diet, insectivory remained predominant in all sample periods. However, when we analyzed the groups of hexapods consumed by the fish species, we found a substitution of Ephemeroptera and Trichoptera by Diptera over time. Conclusions: Although the fish assemblage structure was not affected, the insectivore diet analysis showed that the stream stretch could be in an ongoing process of environmental quality loss, once the simplification in the macroinvertebrates assemblage structure over time is indicative of environmental degradation.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Departamento de Zoologia Universidade Estadual Paulista - UNESP, CP 510Departamento de Zoologia Universidade Estadual Paulista - UNESP, CP 510FAPESP: #2013/01968-9Universidade Estadual Paulista (Unesp)Manoel, Pedro Sartori [UNESP]Uieda, Virginia Sanches [UNESP]2019-10-06T17:05:16Z2019-10-06T17:05:16Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1590/s2179-975x3217Acta Limnologica Brasiliensia, v. 31.0102-6712http://hdl.handle.net/11449/19019110.1590/s2179-975x3217S2179-975X20190001003012-s2.0-85062880346S2179-975X2019000100301.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengActa Limnologica Brasiliensiainfo:eu-repo/semantics/openAccess2024-01-26T06:34:05Zoai:repositorio.unesp.br:11449/190191Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-01-26T06:34:05Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Long-term effects of a rural landscape on the structure and trophic organization of a fish assemblage Efeitos de longo prazo de uma paisagem rural sobre a estrutura e organizaçao trófica de uma assembleia de peixes |
title |
Long-term effects of a rural landscape on the structure and trophic organization of a fish assemblage |
spellingShingle |
Long-term effects of a rural landscape on the structure and trophic organization of a fish assemblage Manoel, Pedro Sartori [UNESP] Diet Feeding habits Rural landscape Seasonal variation Tropical stream |
title_short |
Long-term effects of a rural landscape on the structure and trophic organization of a fish assemblage |
title_full |
Long-term effects of a rural landscape on the structure and trophic organization of a fish assemblage |
title_fullStr |
Long-term effects of a rural landscape on the structure and trophic organization of a fish assemblage |
title_full_unstemmed |
Long-term effects of a rural landscape on the structure and trophic organization of a fish assemblage |
title_sort |
Long-term effects of a rural landscape on the structure and trophic organization of a fish assemblage |
author |
Manoel, Pedro Sartori [UNESP] |
author_facet |
Manoel, Pedro Sartori [UNESP] Uieda, Virginia Sanches [UNESP] |
author_role |
author |
author2 |
Uieda, Virginia Sanches [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Manoel, Pedro Sartori [UNESP] Uieda, Virginia Sanches [UNESP] |
dc.subject.por.fl_str_mv |
Diet Feeding habits Rural landscape Seasonal variation Tropical stream |
topic |
Diet Feeding habits Rural landscape Seasonal variation Tropical stream |
description |
Aim: We investigated the long-term effects of a rural landscape on the structure and trophic organization of a fish assemblage. Methods: We compared environmental data and data from fish assemblage structure and trophic organization sampled in a stream located in a rural area, within a time gap of 20 years. Results: We observed only punctual changes in the environmental variables and fish structure, which may not be related to the rural landscape. In fish diet, insectivory remained predominant in all sample periods. However, when we analyzed the groups of hexapods consumed by the fish species, we found a substitution of Ephemeroptera and Trichoptera by Diptera over time. Conclusions: Although the fish assemblage structure was not affected, the insectivore diet analysis showed that the stream stretch could be in an ongoing process of environmental quality loss, once the simplification in the macroinvertebrates assemblage structure over time is indicative of environmental degradation. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-06T17:05:16Z 2019-10-06T17:05:16Z 2019-01-01 |
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/s2179-975x3217 Acta Limnologica Brasiliensia, v. 31. 0102-6712 http://hdl.handle.net/11449/190191 10.1590/s2179-975x3217 S2179-975X2019000100301 2-s2.0-85062880346 S2179-975X2019000100301.pdf |
url |
http://dx.doi.org/10.1590/s2179-975x3217 http://hdl.handle.net/11449/190191 |
identifier_str_mv |
Acta Limnologica Brasiliensia, v. 31. 0102-6712 10.1590/s2179-975x3217 S2179-975X2019000100301 2-s2.0-85062880346 S2179-975X2019000100301.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 |
application/pdf |
dc.source.none.fl_str_mv |
Scopus 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_ |
1799965733734580224 |