Trophic Structure Over the Northern Mid-Atlantic Ridge: The Bathypelagic Zone Really Matters
We present preliminary results and ongoing efforts to characterize the trophic structure and energy flow of the pelagic ecosystems of the northern Mid-Atlantic Ridge (MAR), from Iceland to the Azores. This study is one component of the international CoML field project MAR-ECO (www.mar-eco.no). We fo...
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ftnsoutheastern:oai:nsuworks.nova.edu:occ_facpresentations-1220 2023-05-15T16:50:39+02:00 Trophic Structure Over the Northern Mid-Atlantic Ridge: The Bathypelagic Zone Really Matters Sutton, Tracey Hoffman, Joel C. Kidwell, Jeanna Falkenhaug, Tone Bergstad, Odd Aksel 2010-02-01T08:00:00Z https://nsuworks.nova.edu/occ_facpresentations/237 http://abstractsearch.agu.org/meetings/2010/OS/BO25E-07.html unknown NSUWorks https://nsuworks.nova.edu/occ_facpresentations/237 http://abstractsearch.agu.org/meetings/2010/OS/BO25E-07.html Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures Marine Biology Oceanography and Atmospheric Sciences and Meteorology poster 2010 ftnsoutheastern 2022-04-10T21:30:35Z We present preliminary results and ongoing efforts to characterize the trophic structure and energy flow of the pelagic ecosystems of the northern Mid-Atlantic Ridge (MAR), from Iceland to the Azores. This study is one component of the international CoML field project MAR-ECO (www.mar-eco.no). We found a diverse deep-pelagic fish fauna (205 spp.), with unexpectedly high bathypelagic fish biomass and spatial complexity. Based on literature reports of species present, crustacean planktivory is the dominant trophic guild (79% of individuals 47% of species), primarily within the mesopelagial. “Gelativory” was second (12% ind., 4% spp.), primarily within the bathypelagial. Omnivory (3%, 13%), “shrimpivory” (2%, 4%), and piscivory (1%, 21%) were the remaining major feeding guilds. The diets of 22 spp., primarily bathypelagic, are unknown. A spatially explicit food web model revealed that of 12 fish assemblages discriminated by multivariate analysis, only three accounted for more than 4% of total fish consumption. The most striking finding was that along much of the MAR, fish consumption in the bathypelagic equals or exceeds the epi- and mesopelagic. Further, “alternate” trophic pathways (gelatinous zooplankton and shrimp consumption) appear to me major energy vectors in the deep North Atlantic. Still Image Iceland North Atlantic Nova Southeastern University: NSU Works Mid-Atlantic Ridge |
institution |
Open Polar |
collection |
Nova Southeastern University: NSU Works |
op_collection_id |
ftnsoutheastern |
language |
unknown |
topic |
Marine Biology Oceanography and Atmospheric Sciences and Meteorology |
spellingShingle |
Marine Biology Oceanography and Atmospheric Sciences and Meteorology Sutton, Tracey Hoffman, Joel C. Kidwell, Jeanna Falkenhaug, Tone Bergstad, Odd Aksel Trophic Structure Over the Northern Mid-Atlantic Ridge: The Bathypelagic Zone Really Matters |
topic_facet |
Marine Biology Oceanography and Atmospheric Sciences and Meteorology |
description |
We present preliminary results and ongoing efforts to characterize the trophic structure and energy flow of the pelagic ecosystems of the northern Mid-Atlantic Ridge (MAR), from Iceland to the Azores. This study is one component of the international CoML field project MAR-ECO (www.mar-eco.no). We found a diverse deep-pelagic fish fauna (205 spp.), with unexpectedly high bathypelagic fish biomass and spatial complexity. Based on literature reports of species present, crustacean planktivory is the dominant trophic guild (79% of individuals 47% of species), primarily within the mesopelagial. “Gelativory” was second (12% ind., 4% spp.), primarily within the bathypelagial. Omnivory (3%, 13%), “shrimpivory” (2%, 4%), and piscivory (1%, 21%) were the remaining major feeding guilds. The diets of 22 spp., primarily bathypelagic, are unknown. A spatially explicit food web model revealed that of 12 fish assemblages discriminated by multivariate analysis, only three accounted for more than 4% of total fish consumption. The most striking finding was that along much of the MAR, fish consumption in the bathypelagic equals or exceeds the epi- and mesopelagic. Further, “alternate” trophic pathways (gelatinous zooplankton and shrimp consumption) appear to me major energy vectors in the deep North Atlantic. |
format |
Still Image |
author |
Sutton, Tracey Hoffman, Joel C. Kidwell, Jeanna Falkenhaug, Tone Bergstad, Odd Aksel |
author_facet |
Sutton, Tracey Hoffman, Joel C. Kidwell, Jeanna Falkenhaug, Tone Bergstad, Odd Aksel |
author_sort |
Sutton, Tracey |
title |
Trophic Structure Over the Northern Mid-Atlantic Ridge: The Bathypelagic Zone Really Matters |
title_short |
Trophic Structure Over the Northern Mid-Atlantic Ridge: The Bathypelagic Zone Really Matters |
title_full |
Trophic Structure Over the Northern Mid-Atlantic Ridge: The Bathypelagic Zone Really Matters |
title_fullStr |
Trophic Structure Over the Northern Mid-Atlantic Ridge: The Bathypelagic Zone Really Matters |
title_full_unstemmed |
Trophic Structure Over the Northern Mid-Atlantic Ridge: The Bathypelagic Zone Really Matters |
title_sort |
trophic structure over the northern mid-atlantic ridge: the bathypelagic zone really matters |
publisher |
NSUWorks |
publishDate |
2010 |
url |
https://nsuworks.nova.edu/occ_facpresentations/237 http://abstractsearch.agu.org/meetings/2010/OS/BO25E-07.html |
geographic |
Mid-Atlantic Ridge |
geographic_facet |
Mid-Atlantic Ridge |
genre |
Iceland North Atlantic |
genre_facet |
Iceland North Atlantic |
op_source |
Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures |
op_relation |
https://nsuworks.nova.edu/occ_facpresentations/237 http://abstractsearch.agu.org/meetings/2010/OS/BO25E-07.html |
_version_ |
1766040768069238784 |