Community analysis of large epibenthos in the Nordic Seas
The aim of the presented project was to provide information about the community structure and diversity of epibenthic megafauna in the Nordic Seas. The focus was the importance of hard substrate in the formation and definition of animal communities. The study was based on photographs from the Greenl...
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ftskemman:oai:skemman.is:1946/4442 2023-05-15T16:29:46+02:00 Community analysis of large epibenthos in the Nordic Seas Samfélagsvistfræði stórra botndýra á Norrænuhafsvæðinu Dos Santos, Eric Ruben, 1972- Háskóli Íslands 2010-02-17T09:20:31Z application/pdf http://hdl.handle.net/1946/4442 en eng http://hdl.handle.net/1946/4442 Líffræði Botndýr Sjávarlíffræði Norður-Atlantshaf Thesis Master's 2010 ftskemman 2022-12-11T06:57:41Z The aim of the presented project was to provide information about the community structure and diversity of epibenthic megafauna in the Nordic Seas. The focus was the importance of hard substrate in the formation and definition of animal communities. The study was based on photographs from the Greenland-Iceland-Faeroes Ridge (GIF) and photographs and videos collected from the Jan Mayen Fracture Zone (JMFZ) and the Mohn Ridge. The GIF samples were collected from eight stations to the northwest of Iceland using a frame-mounted camera. Videos and stills collected from the JMFZ and the Mohn Ridge were recorded using an ROV. All animals large enough (>1 cm diameter for photographs, >5 cm diameter for videos) were identified to lowest possible taxonomic level. On the GIF Ridge, community structure was found to vary somewhat between stations but also, within stations. Community structure was more strongly influenced by high habitat heterogeneity than by other measured environmental variables. The presence of hard surfaces in soft sediment areas caused a shift of community structure from that found on soft bottoms to one more like that found on hard bottoms. The wider scope provided by video data from the JMFZ and Mohn Ridge areas showed distribution of epifauna in patches where high dominance of a few taxa was observed. This patchiness seems to be the result of presence or absence of hard surfaces to act as anchor sites for sessile and semi-sessile species. Thesis Greenland Iceland Jan Mayen Nordic Seas Skemman (Iceland) Greenland Jan Mayen Jan Mayen Fracture Zone ENVELOPE(-8.000,-8.000,71.200,71.200) |
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Open Polar |
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Skemman (Iceland) |
op_collection_id |
ftskemman |
language |
English |
topic |
Líffræði Botndýr Sjávarlíffræði Norður-Atlantshaf |
spellingShingle |
Líffræði Botndýr Sjávarlíffræði Norður-Atlantshaf Dos Santos, Eric Ruben, 1972- Community analysis of large epibenthos in the Nordic Seas |
topic_facet |
Líffræði Botndýr Sjávarlíffræði Norður-Atlantshaf |
description |
The aim of the presented project was to provide information about the community structure and diversity of epibenthic megafauna in the Nordic Seas. The focus was the importance of hard substrate in the formation and definition of animal communities. The study was based on photographs from the Greenland-Iceland-Faeroes Ridge (GIF) and photographs and videos collected from the Jan Mayen Fracture Zone (JMFZ) and the Mohn Ridge. The GIF samples were collected from eight stations to the northwest of Iceland using a frame-mounted camera. Videos and stills collected from the JMFZ and the Mohn Ridge were recorded using an ROV. All animals large enough (>1 cm diameter for photographs, >5 cm diameter for videos) were identified to lowest possible taxonomic level. On the GIF Ridge, community structure was found to vary somewhat between stations but also, within stations. Community structure was more strongly influenced by high habitat heterogeneity than by other measured environmental variables. The presence of hard surfaces in soft sediment areas caused a shift of community structure from that found on soft bottoms to one more like that found on hard bottoms. The wider scope provided by video data from the JMFZ and Mohn Ridge areas showed distribution of epifauna in patches where high dominance of a few taxa was observed. This patchiness seems to be the result of presence or absence of hard surfaces to act as anchor sites for sessile and semi-sessile species. |
author2 |
Háskóli Íslands |
format |
Thesis |
author |
Dos Santos, Eric Ruben, 1972- |
author_facet |
Dos Santos, Eric Ruben, 1972- |
author_sort |
Dos Santos, Eric Ruben, 1972- |
title |
Community analysis of large epibenthos in the Nordic Seas |
title_short |
Community analysis of large epibenthos in the Nordic Seas |
title_full |
Community analysis of large epibenthos in the Nordic Seas |
title_fullStr |
Community analysis of large epibenthos in the Nordic Seas |
title_full_unstemmed |
Community analysis of large epibenthos in the Nordic Seas |
title_sort |
community analysis of large epibenthos in the nordic seas |
publishDate |
2010 |
url |
http://hdl.handle.net/1946/4442 |
long_lat |
ENVELOPE(-8.000,-8.000,71.200,71.200) |
geographic |
Greenland Jan Mayen Jan Mayen Fracture Zone |
geographic_facet |
Greenland Jan Mayen Jan Mayen Fracture Zone |
genre |
Greenland Iceland Jan Mayen Nordic Seas |
genre_facet |
Greenland Iceland Jan Mayen Nordic Seas |
op_relation |
http://hdl.handle.net/1946/4442 |
_version_ |
1766019472212099072 |