Abundance patterns and species assemblages of euphausiids associated with the Mid-Atlantic Ridge, North Atlantic
New baseline information is presented on biogeography, abundance and distribution of euphausiids from discrete depth samples collected throughout the water column to 3000 m at 42 locations along the Mid-Atlantic Ridge (MAR) between Iceland and the Azores. Eighteen species were recorded, with Euphaus...
Published in: | Journal of Plankton Research |
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2011
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fthighwire:oai:open-archive.highwire.org:plankt:fbr056v1 2023-05-15T15:07:39+02:00 Abundance patterns and species assemblages of euphausiids associated with the Mid-Atlantic Ridge, North Atlantic Letessier, Tom B. Falkenhaug, Tone Debes, Høgni Bergstad, Odd Aksel Brierley, Andrew S. 2011-07-05 00:22:31.0 text/html http://plankt.oxfordjournals.org/cgi/content/short/fbr056v1 https://doi.org/10.1093/plankt/fbr056 en eng Oxford University Press http://plankt.oxfordjournals.org/cgi/content/short/fbr056v1 http://dx.doi.org/10.1093/plankt/fbr056 Copyright (C) 2011, Oxford University Press Article TEXT 2011 fthighwire https://doi.org/10.1093/plankt/fbr056 2016-11-16T18:35:56Z New baseline information is presented on biogeography, abundance and distribution of euphausiids from discrete depth samples collected throughout the water column to 3000 m at 42 locations along the Mid-Atlantic Ridge (MAR) between Iceland and the Azores. Eighteen species were recorded, with Euphausia krohni and Thysanoessa longicaudata being most abundant. Eight species had not been recorded in the area previously. The Subpolar Front is a northern boundary to some southern species, but not a southern boundary to northern ubiquitous species that show submergence. Four major species assemblages were identified and characterized in terms of spatial distribution and species composition. Numerical abundance was highly variable but decreased logarithmically with depth. The greatest average abundance and the greatest spatial variation in abundance occurred in northern waters, over the Reykjanes Ridge. Abundance declined less with depth in the sub-Arctic Intermediate Water/North Atlantic Current Water than in other areas and water masses. The near bottom layer (0–200 m from the seabed) had typically low density of euphausiids. The MAR is generally deeper than the usual depth distribution of euphausiids (0–300 m), but many species conduct vertical migrations to ridge crest depths. Euphausiid distribution and abundance patterns appeared only weakly affected by the MAR. Text Arctic Iceland north atlantic current North Atlantic HighWire Press (Stanford University) Arctic Mid-Atlantic Ridge Reykjanes ENVELOPE(-22.250,-22.250,65.467,65.467) Journal of Plankton Research 33 10 1510 1525 |
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HighWire Press (Stanford University) |
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language |
English |
topic |
Article |
spellingShingle |
Article Letessier, Tom B. Falkenhaug, Tone Debes, Høgni Bergstad, Odd Aksel Brierley, Andrew S. Abundance patterns and species assemblages of euphausiids associated with the Mid-Atlantic Ridge, North Atlantic |
topic_facet |
Article |
description |
New baseline information is presented on biogeography, abundance and distribution of euphausiids from discrete depth samples collected throughout the water column to 3000 m at 42 locations along the Mid-Atlantic Ridge (MAR) between Iceland and the Azores. Eighteen species were recorded, with Euphausia krohni and Thysanoessa longicaudata being most abundant. Eight species had not been recorded in the area previously. The Subpolar Front is a northern boundary to some southern species, but not a southern boundary to northern ubiquitous species that show submergence. Four major species assemblages were identified and characterized in terms of spatial distribution and species composition. Numerical abundance was highly variable but decreased logarithmically with depth. The greatest average abundance and the greatest spatial variation in abundance occurred in northern waters, over the Reykjanes Ridge. Abundance declined less with depth in the sub-Arctic Intermediate Water/North Atlantic Current Water than in other areas and water masses. The near bottom layer (0–200 m from the seabed) had typically low density of euphausiids. The MAR is generally deeper than the usual depth distribution of euphausiids (0–300 m), but many species conduct vertical migrations to ridge crest depths. Euphausiid distribution and abundance patterns appeared only weakly affected by the MAR. |
format |
Text |
author |
Letessier, Tom B. Falkenhaug, Tone Debes, Høgni Bergstad, Odd Aksel Brierley, Andrew S. |
author_facet |
Letessier, Tom B. Falkenhaug, Tone Debes, Høgni Bergstad, Odd Aksel Brierley, Andrew S. |
author_sort |
Letessier, Tom B. |
title |
Abundance patterns and species assemblages of euphausiids associated with the Mid-Atlantic Ridge, North Atlantic |
title_short |
Abundance patterns and species assemblages of euphausiids associated with the Mid-Atlantic Ridge, North Atlantic |
title_full |
Abundance patterns and species assemblages of euphausiids associated with the Mid-Atlantic Ridge, North Atlantic |
title_fullStr |
Abundance patterns and species assemblages of euphausiids associated with the Mid-Atlantic Ridge, North Atlantic |
title_full_unstemmed |
Abundance patterns and species assemblages of euphausiids associated with the Mid-Atlantic Ridge, North Atlantic |
title_sort |
abundance patterns and species assemblages of euphausiids associated with the mid-atlantic ridge, north atlantic |
publisher |
Oxford University Press |
publishDate |
2011 |
url |
http://plankt.oxfordjournals.org/cgi/content/short/fbr056v1 https://doi.org/10.1093/plankt/fbr056 |
long_lat |
ENVELOPE(-22.250,-22.250,65.467,65.467) |
geographic |
Arctic Mid-Atlantic Ridge Reykjanes |
geographic_facet |
Arctic Mid-Atlantic Ridge Reykjanes |
genre |
Arctic Iceland north atlantic current North Atlantic |
genre_facet |
Arctic Iceland north atlantic current North Atlantic |
op_relation |
http://plankt.oxfordjournals.org/cgi/content/short/fbr056v1 http://dx.doi.org/10.1093/plankt/fbr056 |
op_rights |
Copyright (C) 2011, Oxford University Press |
op_doi |
https://doi.org/10.1093/plankt/fbr056 |
container_title |
Journal of Plankton Research |
container_volume |
33 |
container_issue |
10 |
container_start_page |
1510 |
op_container_end_page |
1525 |
_version_ |
1766339104689094656 |