Influence of bathymetry on macroepibenthic communities
The cold-water hydrocoral Errina antarctica provides habitat for numerous macroepibenthic species. Gaining knowledge about the highly diverse communities associated with E. antarctica is crucial for efficient protection of the ecosystems, which are strongly threatened by aquaculture and other human...
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International conference of young marine researchers and engineers
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ftawi:oai:epic.awi.de:33526 2023-05-15T13:40:26+02:00 Influence of bathymetry on macroepibenthic communities Winkler, Malte Laudien, Jürgen Fillinger, Laura Häussermann, Verena 2013-09-11 https://epic.awi.de/id/eprint/33526/ https://hdl.handle.net/10013/epic.41978 unknown International conference of young marine researchers and engineers Winkler, M. , Laudien, J. orcid:0000-0003-2663-4821 , Fillinger, L. and Häussermann, V. (2013) Influence of bathymetry on macroepibenthic communities , YOUMARES 4 From coast to deep sea: multiscale approaches to marine science, Oldenburg, Germany, 11 September 2013 - 13 September 2013 . hdl:10013/epic.41978 EPIC3YOUMARES 4 From coast to deep sea: multiscale approaches to marine science, Oldenburg, Germany, 2013-09-11-2013-09-13Oldenburg, Germany, International conference of young marine researchers and engineers Conference notRev 2013 ftawi 2021-12-24T15:38:50Z The cold-water hydrocoral Errina antarctica provides habitat for numerous macroepibenthic species. Gaining knowledge about the highly diverse communities associated with E. antarctica is crucial for efficient protection of the ecosystems, which are strongly threatened by aquaculture and other human activities. This investigation for the first time provides information on quantitative composition of benthic communities associated with E. antarctica. Structure of macroepibenthic community associated with E. antarctica in three bathymetric zones (Zone 1: 10-20 m; Zone 2: 20-30 m; Zone 3: 30-40 m) from four diving sites in the Chilean fjord region is described by analyzing 260 images extracted from videos recorded via ROV. Community compositions were investigated based on abundances using multivariate statistical methods (SIMPER, ANOSIM, MDS). Ecological indices (S, H´, d, J´) were calculated. Distribution of differently sized E. antarctica-colonies (small [diameter < 10 cm], medium [10 cm < diameter < 20 cm], large [20 cm < diameter]) was investigated and set into context with analysis of community structure. No significant influence of depth on the investigated community was detected. Differences between the four diving sites seem to overlay bathymetric effects. Annelids (mainly genus spirorbis) dominate all bathymetric zones, in line with former investigations. ANOSIM indicated poor distinctness between bathymetric zones (GR=0.062). The MDS-plot showed no grouping of bathymetric zones. Low values of ecological indices in Zone 1 are explained by distribution of E. antarctica-colonies. Abundances of colonies of all sizes decreases with depth, portion of small colonies is highest in Zone 1. Conference Object Antarc* Antarctica E. Antarctica Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
The cold-water hydrocoral Errina antarctica provides habitat for numerous macroepibenthic species. Gaining knowledge about the highly diverse communities associated with E. antarctica is crucial for efficient protection of the ecosystems, which are strongly threatened by aquaculture and other human activities. This investigation for the first time provides information on quantitative composition of benthic communities associated with E. antarctica. Structure of macroepibenthic community associated with E. antarctica in three bathymetric zones (Zone 1: 10-20 m; Zone 2: 20-30 m; Zone 3: 30-40 m) from four diving sites in the Chilean fjord region is described by analyzing 260 images extracted from videos recorded via ROV. Community compositions were investigated based on abundances using multivariate statistical methods (SIMPER, ANOSIM, MDS). Ecological indices (S, H´, d, J´) were calculated. Distribution of differently sized E. antarctica-colonies (small [diameter < 10 cm], medium [10 cm < diameter < 20 cm], large [20 cm < diameter]) was investigated and set into context with analysis of community structure. No significant influence of depth on the investigated community was detected. Differences between the four diving sites seem to overlay bathymetric effects. Annelids (mainly genus spirorbis) dominate all bathymetric zones, in line with former investigations. ANOSIM indicated poor distinctness between bathymetric zones (GR=0.062). The MDS-plot showed no grouping of bathymetric zones. Low values of ecological indices in Zone 1 are explained by distribution of E. antarctica-colonies. Abundances of colonies of all sizes decreases with depth, portion of small colonies is highest in Zone 1. |
format |
Conference Object |
author |
Winkler, Malte Laudien, Jürgen Fillinger, Laura Häussermann, Verena |
spellingShingle |
Winkler, Malte Laudien, Jürgen Fillinger, Laura Häussermann, Verena Influence of bathymetry on macroepibenthic communities |
author_facet |
Winkler, Malte Laudien, Jürgen Fillinger, Laura Häussermann, Verena |
author_sort |
Winkler, Malte |
title |
Influence of bathymetry on macroepibenthic communities |
title_short |
Influence of bathymetry on macroepibenthic communities |
title_full |
Influence of bathymetry on macroepibenthic communities |
title_fullStr |
Influence of bathymetry on macroepibenthic communities |
title_full_unstemmed |
Influence of bathymetry on macroepibenthic communities |
title_sort |
influence of bathymetry on macroepibenthic communities |
publisher |
International conference of young marine researchers and engineers |
publishDate |
2013 |
url |
https://epic.awi.de/id/eprint/33526/ https://hdl.handle.net/10013/epic.41978 |
genre |
Antarc* Antarctica E. Antarctica |
genre_facet |
Antarc* Antarctica E. Antarctica |
op_source |
EPIC3YOUMARES 4 From coast to deep sea: multiscale approaches to marine science, Oldenburg, Germany, 2013-09-11-2013-09-13Oldenburg, Germany, International conference of young marine researchers and engineers |
op_relation |
Winkler, M. , Laudien, J. orcid:0000-0003-2663-4821 , Fillinger, L. and Häussermann, V. (2013) Influence of bathymetry on macroepibenthic communities , YOUMARES 4 From coast to deep sea: multiscale approaches to marine science, Oldenburg, Germany, 11 September 2013 - 13 September 2013 . hdl:10013/epic.41978 |
_version_ |
1766133584473620480 |