Taxonomic composition and feeding habits of Chironomidae in Cerrado streams (Southeast Brazil): impacts of land use changes
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Acta Limnologica Brasiliensia (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2014000100006 |
Resumo: | The Chironomidae family is the most abundant and diverse member of the benthic community in streams, yet their identification is still neglected in many papers. It is considered a family tolerant to environmental impacts and with homogeneous feeding habit. AIM: To compare the richness, abundance and taxonomic composition of Chironomidae in Cerrado streams under different land uses as well as the feeding habit differences between genera of reference areas, sugar cane culture and pasture. METHODS: We selected seven streams in each land use and sampled six units using Surber sampler. The material was transported live for laboratory processing. RESULTS: Our results showed no significant differences in abundance and richness of Chironomidae among different land use, but we observed greater average values of abundance and richness in streams impacted by pasture. We found a distinct taxonomic composition between reference streams and impacted streams, both sugar cane and pasture. Stenochironomus was the most representative genus in reference areas, while Parametriocnemus was in sugar cane culture and Tanytarsus in pastures. The only statistically different feeding pattern found were between Cerrado streams and sugar cane for plant tissues, reflecting the greater abundance of Stenochironomus in Cerrado and among Cerrado streams and pasture for microalgae. CONCLUSIONS: We conclude that the conversion of natural areas in monocultures and pastures directly impact streams by modifying the taxonomic structure of Chironomidae. In contrast we did not observe a clear change in feeding patterns, because in all streams the diet pattern was mostly detritivorous. |
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Taxonomic composition and feeding habits of Chironomidae in Cerrado streams (Southeast Brazil): impacts of land use changesaquatic insectsnonbiting midgesenvironmental impactsfaunal compositionfunctional groupsThe Chironomidae family is the most abundant and diverse member of the benthic community in streams, yet their identification is still neglected in many papers. It is considered a family tolerant to environmental impacts and with homogeneous feeding habit. AIM: To compare the richness, abundance and taxonomic composition of Chironomidae in Cerrado streams under different land uses as well as the feeding habit differences between genera of reference areas, sugar cane culture and pasture. METHODS: We selected seven streams in each land use and sampled six units using Surber sampler. The material was transported live for laboratory processing. RESULTS: Our results showed no significant differences in abundance and richness of Chironomidae among different land use, but we observed greater average values of abundance and richness in streams impacted by pasture. We found a distinct taxonomic composition between reference streams and impacted streams, both sugar cane and pasture. Stenochironomus was the most representative genus in reference areas, while Parametriocnemus was in sugar cane culture and Tanytarsus in pastures. The only statistically different feeding pattern found were between Cerrado streams and sugar cane for plant tissues, reflecting the greater abundance of Stenochironomus in Cerrado and among Cerrado streams and pasture for microalgae. CONCLUSIONS: We conclude that the conversion of natural areas in monocultures and pastures directly impact streams by modifying the taxonomic structure of Chironomidae. In contrast we did not observe a clear change in feeding patterns, because in all streams the diet pattern was mostly detritivorous.Associação Brasileira de Limnologia2014-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2014000100006Acta Limnologica Brasiliensia v.26 n.1 2014reponame:Acta Limnologica Brasiliensia (Online)instname:Associação Brasileira de Limnologia (ABL)instacron:ABL10.1590/S2179-975X2014000100006info:eu-repo/semantics/openAccessSaito,Victor SatoruFonseca-Gessner,Alaíde Aparecidaeng2014-07-24T00:00:00Zoai:scielo:S2179-975X2014000100006Revistahttp://www.ablimno.org.br/publiActa.phphttps://old.scielo.br/oai/scielo-oai.php||actalb@rc.unesp.br2179-975X0102-6712opendoar:2014-07-24T00:00Acta Limnologica Brasiliensia (Online) - Associação Brasileira de Limnologia (ABL)false |
dc.title.none.fl_str_mv |
Taxonomic composition and feeding habits of Chironomidae in Cerrado streams (Southeast Brazil): impacts of land use changes |
title |
Taxonomic composition and feeding habits of Chironomidae in Cerrado streams (Southeast Brazil): impacts of land use changes |
spellingShingle |
Taxonomic composition and feeding habits of Chironomidae in Cerrado streams (Southeast Brazil): impacts of land use changes Saito,Victor Satoru aquatic insects nonbiting midges environmental impacts faunal composition functional groups |
title_short |
Taxonomic composition and feeding habits of Chironomidae in Cerrado streams (Southeast Brazil): impacts of land use changes |
title_full |
Taxonomic composition and feeding habits of Chironomidae in Cerrado streams (Southeast Brazil): impacts of land use changes |
title_fullStr |
Taxonomic composition and feeding habits of Chironomidae in Cerrado streams (Southeast Brazil): impacts of land use changes |
title_full_unstemmed |
Taxonomic composition and feeding habits of Chironomidae in Cerrado streams (Southeast Brazil): impacts of land use changes |
title_sort |
Taxonomic composition and feeding habits of Chironomidae in Cerrado streams (Southeast Brazil): impacts of land use changes |
author |
Saito,Victor Satoru |
author_facet |
Saito,Victor Satoru Fonseca-Gessner,Alaíde Aparecida |
author_role |
author |
author2 |
Fonseca-Gessner,Alaíde Aparecida |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Saito,Victor Satoru Fonseca-Gessner,Alaíde Aparecida |
dc.subject.por.fl_str_mv |
aquatic insects nonbiting midges environmental impacts faunal composition functional groups |
topic |
aquatic insects nonbiting midges environmental impacts faunal composition functional groups |
description |
The Chironomidae family is the most abundant and diverse member of the benthic community in streams, yet their identification is still neglected in many papers. It is considered a family tolerant to environmental impacts and with homogeneous feeding habit. AIM: To compare the richness, abundance and taxonomic composition of Chironomidae in Cerrado streams under different land uses as well as the feeding habit differences between genera of reference areas, sugar cane culture and pasture. METHODS: We selected seven streams in each land use and sampled six units using Surber sampler. The material was transported live for laboratory processing. RESULTS: Our results showed no significant differences in abundance and richness of Chironomidae among different land use, but we observed greater average values of abundance and richness in streams impacted by pasture. We found a distinct taxonomic composition between reference streams and impacted streams, both sugar cane and pasture. Stenochironomus was the most representative genus in reference areas, while Parametriocnemus was in sugar cane culture and Tanytarsus in pastures. The only statistically different feeding pattern found were between Cerrado streams and sugar cane for plant tissues, reflecting the greater abundance of Stenochironomus in Cerrado and among Cerrado streams and pasture for microalgae. CONCLUSIONS: We conclude that the conversion of natural areas in monocultures and pastures directly impact streams by modifying the taxonomic structure of Chironomidae. In contrast we did not observe a clear change in feeding patterns, because in all streams the diet pattern was mostly detritivorous. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-03-01 |
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=S2179-975X2014000100006 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2014000100006 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S2179-975X2014000100006 |
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 |
Associação Brasileira de Limnologia |
publisher.none.fl_str_mv |
Associação Brasileira de Limnologia |
dc.source.none.fl_str_mv |
Acta Limnologica Brasiliensia v.26 n.1 2014 reponame:Acta Limnologica Brasiliensia (Online) instname:Associação Brasileira de Limnologia (ABL) instacron:ABL |
instname_str |
Associação Brasileira de Limnologia (ABL) |
instacron_str |
ABL |
institution |
ABL |
reponame_str |
Acta Limnologica Brasiliensia (Online) |
collection |
Acta Limnologica Brasiliensia (Online) |
repository.name.fl_str_mv |
Acta Limnologica Brasiliensia (Online) - Associação Brasileira de Limnologia (ABL) |
repository.mail.fl_str_mv |
||actalb@rc.unesp.br |
_version_ |
1754212636700966912 |