The influence of connectivity in forest patches, and riparian vegetation width on stream macroinvertebrate fauna

Detalhes bibliográficos
Autor(a) principal: Valle,IC
Data de Publicação: 2013
Outros Autores: Buss,DF, Baptista,DF
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Biology
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842013000200231
Resumo: We assessed two dimensions of stream connectivity: longitudinal (between forest patches along the stream) and lateral (riparian vegetation), using macroinvertebrate assemblages as bioindicators. Sites representing different land-uses were sampled in a lowland basin that holds a mosaic of protected areas. Land-use analysis, forest successional stages and riparian zone widths were calculated by the GIS analysis. Macroinvertebrate fauna was strongly affected by land-use. We observed a continuous decrease in the number of sensitive species, %Shredders and IBE-IOC biotic index from the upstream protected area to highly deforested sites, increasing again where the stream crosses a Biological Reserve. When analysing buffer strips, we found aquatic fauna responding to land-use alterations beyond the 30 m riparian corridor (60 m and 100 m wide). We discussed the longitudinal connectivity between forest patches and the riparian vegetation buffer strips necessary to hold high macroinvertebrate diversity. We recommend actions for the increase/maintenance of biodiversity in this and other lowland basins.
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spelling The influence of connectivity in forest patches, and riparian vegetation width on stream macroinvertebrate faunabioassessmentbiomonitoringaquatic insectsriparian zoneconservationWe assessed two dimensions of stream connectivity: longitudinal (between forest patches along the stream) and lateral (riparian vegetation), using macroinvertebrate assemblages as bioindicators. Sites representing different land-uses were sampled in a lowland basin that holds a mosaic of protected areas. Land-use analysis, forest successional stages and riparian zone widths were calculated by the GIS analysis. Macroinvertebrate fauna was strongly affected by land-use. We observed a continuous decrease in the number of sensitive species, %Shredders and IBE-IOC biotic index from the upstream protected area to highly deforested sites, increasing again where the stream crosses a Biological Reserve. When analysing buffer strips, we found aquatic fauna responding to land-use alterations beyond the 30 m riparian corridor (60 m and 100 m wide). We discussed the longitudinal connectivity between forest patches and the riparian vegetation buffer strips necessary to hold high macroinvertebrate diversity. We recommend actions for the increase/maintenance of biodiversity in this and other lowland basins.Instituto Internacional de Ecologia2013-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842013000200231Brazilian Journal of Biology v.73 n.2 2013reponame:Brazilian Journal of Biologyinstname:Instituto Internacional de Ecologia (IIE)instacron:IIE10.1590/S1519-69842013000200002info:eu-repo/semantics/openAccessValle,ICBuss,DFBaptista,DFeng2015-10-27T00:00:00Zoai:scielo:S1519-69842013000200231Revistahttps://www.scielo.br/j/bjb/https://old.scielo.br/oai/scielo-oai.phpbjb@bjb.com.br||bjb@bjb.com.br1678-43751519-6984opendoar:2015-10-27T00:00Brazilian Journal of Biology - Instituto Internacional de Ecologia (IIE)false
dc.title.none.fl_str_mv The influence of connectivity in forest patches, and riparian vegetation width on stream macroinvertebrate fauna
title The influence of connectivity in forest patches, and riparian vegetation width on stream macroinvertebrate fauna
spellingShingle The influence of connectivity in forest patches, and riparian vegetation width on stream macroinvertebrate fauna
Valle,IC
bioassessment
biomonitoring
aquatic insects
riparian zone
conservation
title_short The influence of connectivity in forest patches, and riparian vegetation width on stream macroinvertebrate fauna
title_full The influence of connectivity in forest patches, and riparian vegetation width on stream macroinvertebrate fauna
title_fullStr The influence of connectivity in forest patches, and riparian vegetation width on stream macroinvertebrate fauna
title_full_unstemmed The influence of connectivity in forest patches, and riparian vegetation width on stream macroinvertebrate fauna
title_sort The influence of connectivity in forest patches, and riparian vegetation width on stream macroinvertebrate fauna
author Valle,IC
author_facet Valle,IC
Buss,DF
Baptista,DF
author_role author
author2 Buss,DF
Baptista,DF
author2_role author
author
dc.contributor.author.fl_str_mv Valle,IC
Buss,DF
Baptista,DF
dc.subject.por.fl_str_mv bioassessment
biomonitoring
aquatic insects
riparian zone
conservation
topic bioassessment
biomonitoring
aquatic insects
riparian zone
conservation
description We assessed two dimensions of stream connectivity: longitudinal (between forest patches along the stream) and lateral (riparian vegetation), using macroinvertebrate assemblages as bioindicators. Sites representing different land-uses were sampled in a lowland basin that holds a mosaic of protected areas. Land-use analysis, forest successional stages and riparian zone widths were calculated by the GIS analysis. Macroinvertebrate fauna was strongly affected by land-use. We observed a continuous decrease in the number of sensitive species, %Shredders and IBE-IOC biotic index from the upstream protected area to highly deforested sites, increasing again where the stream crosses a Biological Reserve. When analysing buffer strips, we found aquatic fauna responding to land-use alterations beyond the 30 m riparian corridor (60 m and 100 m wide). We discussed the longitudinal connectivity between forest patches and the riparian vegetation buffer strips necessary to hold high macroinvertebrate diversity. We recommend actions for the increase/maintenance of biodiversity in this and other lowland basins.
publishDate 2013
dc.date.none.fl_str_mv 2013-05-01
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=S1519-69842013000200231
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842013000200231
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1519-69842013000200002
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 Instituto Internacional de Ecologia
publisher.none.fl_str_mv Instituto Internacional de Ecologia
dc.source.none.fl_str_mv Brazilian Journal of Biology v.73 n.2 2013
reponame:Brazilian Journal of Biology
instname:Instituto Internacional de Ecologia (IIE)
instacron:IIE
instname_str Instituto Internacional de Ecologia (IIE)
instacron_str IIE
institution IIE
reponame_str Brazilian Journal of Biology
collection Brazilian Journal of Biology
repository.name.fl_str_mv Brazilian Journal of Biology - Instituto Internacional de Ecologia (IIE)
repository.mail.fl_str_mv bjb@bjb.com.br||bjb@bjb.com.br
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