Bathymetric distribution and diversity variation of macrobenthic invertebrates on the continental shelf and upper slope of southern Brazil
This study analyzed the bathymetric distribution and diversity variation of macrobenthic invertebrates on the continental shelf and upper slope of southern Brazil (32º 10’S o 33º 45’S) as well as their relationship with environmental conditions. three hundred twenty species were collected with a 1m...
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Universidade Federal do Rio Grande
2011
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ftjfurg:oai:ojs.periodicos.furg.br:article/2230 2024-06-23T07:48:04+00:00 Bathymetric distribution and diversity variation of macrobenthic invertebrates on the continental shelf and upper slope of southern Brazil Distribuição batimétrica e variações de diversidade dos macroinvertebrados bentônicos da plataforma continental e talude superior no extremo sul do Brasil Capitoli, Ricardo Roberto Bemvenuti, Carlos Emilio 2011-09-06 application/pdf https://periodicos.furg.br/atlantica/article/view/2230 por por Universidade Federal do Rio Grande https://periodicos.furg.br/atlantica/article/view/2230/1171 https://periodicos.furg.br/atlantica/article/view/2230 Copyright (c) 2014 Atlântica (Rio Grande) Atlântica (Rio Grande); v. 26 n. 1 (2004); 27 - 43 2236-7586 0102-1656 Atlântica sudeste Plataforma Continental Talude superior Macroinvertebrados bentônicos Diversidade Southwest Atlantic Continental Shelf Upper slope Benthic macro-invertebrates Diversity info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2011 ftjfurg 2024-06-13T03:10:46Z This study analyzed the bathymetric distribution and diversity variation of macrobenthic invertebrates on the continental shelf and upper slope of southern Brazil (32º 10’S o 33º 45’S) as well as their relationship with environmental conditions. three hundred twenty species were collected with a 1m width rectangular dredge in 90 stations between depth of 11 and 500m. Low species numbers at 11-20m and 83-105m depths coincided with homogeneous substrates, while areas of high richness (33-45m and 150-500m) were related to heterogeneous substrate. The limit between inner and middle shelf, nearly 50m depth, and the outer shelf (100-200m) were characterized as zones of faunistic changes. Low species number in the middle shelf was probably related to substrate homogeneity and low temperatures, due to austral winter ingression of Sub Antartic Shelf Water, over thermophylic species. The species equitativity increased from the outer shelf (100-200m) to maximum values on the upper slope (500m). O objetivo deste estudo foi analisar a distribuição batimétrica e variação do número de espécies de macroinvertebrados bentônicos, na área de plataforma continental e talude superior no extremo sul do Brasil (32º 10’ - 33º 45’ S) e sua relação com as condições ambientais. Foram coletadas 320espécies em 90 estações realizadas com draga retangular de 1m de largura, entre 11 e 500m de profundidade. As áreas que apresentaram menor número de espécies (11-20m e 83-105m) corresponderam a zonas com maior homogeneidade de substratos e nas de maior número de espécies (33-45m e 150-200m) ocorreram substratos mais heterogêneos. O limite entre a plataforma interna e média (50m de profundidade) e a plataforma externa (100-200m) caracterizaram-se como zonas de câmbios faunísticos. O menor número de espécies na plataforma média foi relacionado com a homogeneidade de substratos e ao possível efeito limitante da baixa temperatura sobre as espécies termófilas, provocada pelo ingresso da Água Subantárica de Plataforma durante o inverno. A ... Article in Journal/Newspaper antartic* Portal de Periódicos Científicos FURG (Universidade Federal do Rio Grande) Austral Draga ENVELOPE(7.900,7.900,63.004,63.004) Sudeste ENVELOPE(-60.516,-60.516,-62.988,-62.988) |
institution |
Open Polar |
collection |
Portal de Periódicos Científicos FURG (Universidade Federal do Rio Grande) |
op_collection_id |
ftjfurg |
language |
Portuguese |
topic |
Atlântica sudeste Plataforma Continental Talude superior Macroinvertebrados bentônicos Diversidade Southwest Atlantic Continental Shelf Upper slope Benthic macro-invertebrates Diversity |
spellingShingle |
Atlântica sudeste Plataforma Continental Talude superior Macroinvertebrados bentônicos Diversidade Southwest Atlantic Continental Shelf Upper slope Benthic macro-invertebrates Diversity Capitoli, Ricardo Roberto Bemvenuti, Carlos Emilio Bathymetric distribution and diversity variation of macrobenthic invertebrates on the continental shelf and upper slope of southern Brazil |
topic_facet |
Atlântica sudeste Plataforma Continental Talude superior Macroinvertebrados bentônicos Diversidade Southwest Atlantic Continental Shelf Upper slope Benthic macro-invertebrates Diversity |
description |
This study analyzed the bathymetric distribution and diversity variation of macrobenthic invertebrates on the continental shelf and upper slope of southern Brazil (32º 10’S o 33º 45’S) as well as their relationship with environmental conditions. three hundred twenty species were collected with a 1m width rectangular dredge in 90 stations between depth of 11 and 500m. Low species numbers at 11-20m and 83-105m depths coincided with homogeneous substrates, while areas of high richness (33-45m and 150-500m) were related to heterogeneous substrate. The limit between inner and middle shelf, nearly 50m depth, and the outer shelf (100-200m) were characterized as zones of faunistic changes. Low species number in the middle shelf was probably related to substrate homogeneity and low temperatures, due to austral winter ingression of Sub Antartic Shelf Water, over thermophylic species. The species equitativity increased from the outer shelf (100-200m) to maximum values on the upper slope (500m). O objetivo deste estudo foi analisar a distribuição batimétrica e variação do número de espécies de macroinvertebrados bentônicos, na área de plataforma continental e talude superior no extremo sul do Brasil (32º 10’ - 33º 45’ S) e sua relação com as condições ambientais. Foram coletadas 320espécies em 90 estações realizadas com draga retangular de 1m de largura, entre 11 e 500m de profundidade. As áreas que apresentaram menor número de espécies (11-20m e 83-105m) corresponderam a zonas com maior homogeneidade de substratos e nas de maior número de espécies (33-45m e 150-200m) ocorreram substratos mais heterogêneos. O limite entre a plataforma interna e média (50m de profundidade) e a plataforma externa (100-200m) caracterizaram-se como zonas de câmbios faunísticos. O menor número de espécies na plataforma média foi relacionado com a homogeneidade de substratos e ao possível efeito limitante da baixa temperatura sobre as espécies termófilas, provocada pelo ingresso da Água Subantárica de Plataforma durante o inverno. A ... |
format |
Article in Journal/Newspaper |
author |
Capitoli, Ricardo Roberto Bemvenuti, Carlos Emilio |
author_facet |
Capitoli, Ricardo Roberto Bemvenuti, Carlos Emilio |
author_sort |
Capitoli, Ricardo Roberto |
title |
Bathymetric distribution and diversity variation of macrobenthic invertebrates on the continental shelf and upper slope of southern Brazil |
title_short |
Bathymetric distribution and diversity variation of macrobenthic invertebrates on the continental shelf and upper slope of southern Brazil |
title_full |
Bathymetric distribution and diversity variation of macrobenthic invertebrates on the continental shelf and upper slope of southern Brazil |
title_fullStr |
Bathymetric distribution and diversity variation of macrobenthic invertebrates on the continental shelf and upper slope of southern Brazil |
title_full_unstemmed |
Bathymetric distribution and diversity variation of macrobenthic invertebrates on the continental shelf and upper slope of southern Brazil |
title_sort |
bathymetric distribution and diversity variation of macrobenthic invertebrates on the continental shelf and upper slope of southern brazil |
publisher |
Universidade Federal do Rio Grande |
publishDate |
2011 |
url |
https://periodicos.furg.br/atlantica/article/view/2230 |
long_lat |
ENVELOPE(7.900,7.900,63.004,63.004) ENVELOPE(-60.516,-60.516,-62.988,-62.988) |
geographic |
Austral Draga Sudeste |
geographic_facet |
Austral Draga Sudeste |
genre |
antartic* |
genre_facet |
antartic* |
op_source |
Atlântica (Rio Grande); v. 26 n. 1 (2004); 27 - 43 2236-7586 0102-1656 |
op_relation |
https://periodicos.furg.br/atlantica/article/view/2230/1171 https://periodicos.furg.br/atlantica/article/view/2230 |
op_rights |
Copyright (c) 2014 Atlântica (Rio Grande) |
_version_ |
1802638486220570624 |