Physical habitat simulation for small-sized characid fish species from tropical rivers in Brazil
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Neotropical ichthyology (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000400210 |
Resumo: | ABSTRACT Physical habitat simulation (PHABSIM) is an important step of the instream flow incremental methodology (IFIM), which is applied to establish environmental flow regimes. This study applied the PHABSIM in two reaches of the Velhas river basin, whose long-term discharges are similar but are under different degrees of impact. Suitability curves were obtained for fish species using traditional methods (Astyanax sp., Piabarchus stramineus, Piabina argentea and Serrapinnus heterodon) and generalized additive models for fish density (Astyanax sp., P. argentea and S. heterodon). The results of habitat use depended on the method for curves generation. Applying the suitability curves by traditional methods, different discharge scenarios were simulated. The flow increasing from a dry scenario to a discharge of 1 year of return promotes a possible habitat increase for all species. However, the same hydrological flow percentiles produce different habitat proportions in different rivers. This work demonstrates that regardless of how suitability curves for the Neotropical species are generated, caution should be taken when applying them. However, the PHABSIM method allows more complex analyses than the traditional approaches based on minimal flow estimations, which is usually applied in South America. |
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Neotropical ichthyology (Online) |
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Physical habitat simulation for small-sized characid fish species from tropical rivers in BrazilEnvironmental flowGAM modelsHabitat suitability curvesHydrological scenariosVelhas RiverABSTRACT Physical habitat simulation (PHABSIM) is an important step of the instream flow incremental methodology (IFIM), which is applied to establish environmental flow regimes. This study applied the PHABSIM in two reaches of the Velhas river basin, whose long-term discharges are similar but are under different degrees of impact. Suitability curves were obtained for fish species using traditional methods (Astyanax sp., Piabarchus stramineus, Piabina argentea and Serrapinnus heterodon) and generalized additive models for fish density (Astyanax sp., P. argentea and S. heterodon). The results of habitat use depended on the method for curves generation. Applying the suitability curves by traditional methods, different discharge scenarios were simulated. The flow increasing from a dry scenario to a discharge of 1 year of return promotes a possible habitat increase for all species. However, the same hydrological flow percentiles produce different habitat proportions in different rivers. This work demonstrates that regardless of how suitability curves for the Neotropical species are generated, caution should be taken when applying them. However, the PHABSIM method allows more complex analyses than the traditional approaches based on minimal flow estimations, which is usually applied in South America.Sociedade Brasileira de Ictiologia2018-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000400210Neotropical Ichthyology v.16 n.4 2018reponame:Neotropical ichthyology (Online)instname:Sociedade Brasileira de Ictiologia (SBI)instacron:SBI10.1590/1982-0224-20170003info:eu-repo/semantics/openAccessSantos,Hersília de Andrade eLeal,Cecília GontijoPompeu,Paulo SantosChaves,CeceoCunha,Stephanie Fernandeseng2019-01-28T00:00:00Zoai:scielo:S1679-62252018000400210Revistahttp://www.ufrgs.br/ni/https://old.scielo.br/oai/scielo-oai.php||neoichth@nupelia.uem.br1982-02241679-6225opendoar:2019-01-28T00:00Neotropical ichthyology (Online) - Sociedade Brasileira de Ictiologia (SBI)false |
dc.title.none.fl_str_mv |
Physical habitat simulation for small-sized characid fish species from tropical rivers in Brazil |
title |
Physical habitat simulation for small-sized characid fish species from tropical rivers in Brazil |
spellingShingle |
Physical habitat simulation for small-sized characid fish species from tropical rivers in Brazil Santos,Hersília de Andrade e Environmental flow GAM models Habitat suitability curves Hydrological scenarios Velhas River |
title_short |
Physical habitat simulation for small-sized characid fish species from tropical rivers in Brazil |
title_full |
Physical habitat simulation for small-sized characid fish species from tropical rivers in Brazil |
title_fullStr |
Physical habitat simulation for small-sized characid fish species from tropical rivers in Brazil |
title_full_unstemmed |
Physical habitat simulation for small-sized characid fish species from tropical rivers in Brazil |
title_sort |
Physical habitat simulation for small-sized characid fish species from tropical rivers in Brazil |
author |
Santos,Hersília de Andrade e |
author_facet |
Santos,Hersília de Andrade e Leal,Cecília Gontijo Pompeu,Paulo Santos Chaves,Ceceo Cunha,Stephanie Fernandes |
author_role |
author |
author2 |
Leal,Cecília Gontijo Pompeu,Paulo Santos Chaves,Ceceo Cunha,Stephanie Fernandes |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Santos,Hersília de Andrade e Leal,Cecília Gontijo Pompeu,Paulo Santos Chaves,Ceceo Cunha,Stephanie Fernandes |
dc.subject.por.fl_str_mv |
Environmental flow GAM models Habitat suitability curves Hydrological scenarios Velhas River |
topic |
Environmental flow GAM models Habitat suitability curves Hydrological scenarios Velhas River |
description |
ABSTRACT Physical habitat simulation (PHABSIM) is an important step of the instream flow incremental methodology (IFIM), which is applied to establish environmental flow regimes. This study applied the PHABSIM in two reaches of the Velhas river basin, whose long-term discharges are similar but are under different degrees of impact. Suitability curves were obtained for fish species using traditional methods (Astyanax sp., Piabarchus stramineus, Piabina argentea and Serrapinnus heterodon) and generalized additive models for fish density (Astyanax sp., P. argentea and S. heterodon). The results of habitat use depended on the method for curves generation. Applying the suitability curves by traditional methods, different discharge scenarios were simulated. The flow increasing from a dry scenario to a discharge of 1 year of return promotes a possible habitat increase for all species. However, the same hydrological flow percentiles produce different habitat proportions in different rivers. This work demonstrates that regardless of how suitability curves for the Neotropical species are generated, caution should be taken when applying them. However, the PHABSIM method allows more complex analyses than the traditional approaches based on minimal flow estimations, which is usually applied in South America. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000400210 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000400210 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1982-0224-20170003 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Ictiologia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Ictiologia |
dc.source.none.fl_str_mv |
Neotropical Ichthyology v.16 n.4 2018 reponame:Neotropical ichthyology (Online) instname:Sociedade Brasileira de Ictiologia (SBI) instacron:SBI |
instname_str |
Sociedade Brasileira de Ictiologia (SBI) |
instacron_str |
SBI |
institution |
SBI |
reponame_str |
Neotropical ichthyology (Online) |
collection |
Neotropical ichthyology (Online) |
repository.name.fl_str_mv |
Neotropical ichthyology (Online) - Sociedade Brasileira de Ictiologia (SBI) |
repository.mail.fl_str_mv |
||neoichth@nupelia.uem.br |
_version_ |
1752122182792642560 |