Alternate Trophic Pathways Support Enhanced Bathypelagic Biomass Over a Mid-Ocean Ridge System
A classic paradigm of oceanic ecology is that pelagic animal biomass decreases exponentially with depth. Results of a muti-year study of the distribution and ecology of the pelagic fauna over the northern Mid-Atlantic Ridge (MAR), from Iceland to the Azores, revealed that water column biomass maxima...
Main Authors: | , , , , , |
---|---|
Format: | Conference Object |
Language: | unknown |
Published: |
NSUWorks
2011
|
Subjects: | |
Online Access: | https://nsuworks.nova.edu/occ_facpresentations/262 https://nsuworks.nova.edu/cgi/viewcontent.cgi?article=1195&context=occ_facpresentations |
id |
ftnsoutheastern:oai:nsuworks.nova.edu:occ_facpresentations-1195 |
---|---|
record_format |
openpolar |
spelling |
ftnsoutheastern:oai:nsuworks.nova.edu:occ_facpresentations-1195 2023-05-15T16:50:07+02:00 Alternate Trophic Pathways Support Enhanced Bathypelagic Biomass Over a Mid-Ocean Ridge System Sutton, Tracey Hudson, Jeanna M. Hoffman, Joel C. Falkenhaug, Tone Bergstad, Odd Aksel Heino, M. 2011-02-01T08:00:00Z application/pdf https://nsuworks.nova.edu/occ_facpresentations/262 https://nsuworks.nova.edu/cgi/viewcontent.cgi?article=1195&context=occ_facpresentations unknown NSUWorks https://nsuworks.nova.edu/occ_facpresentations/262 https://nsuworks.nova.edu/cgi/viewcontent.cgi?article=1195&context=occ_facpresentations Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures Marine Biology Oceanography and Atmospheric Sciences and Meteorology conference 2011 ftnsoutheastern 2022-04-10T21:30:35Z A classic paradigm of oceanic ecology is that pelagic animal biomass decreases exponentially with depth. Results of a muti-year study of the distribution and ecology of the pelagic fauna over the northern Mid-Atlantic Ridge (MAR), from Iceland to the Azores, revealed that water column biomass maxima can occur at deep meso- and bathypelagic depths (>750 m). Further, topographic association of the deep-pelagic fauna occurs at some locations. For example, bathypelagic fish abundance and biomass maxima were observed within the benthic boundary layer (<200 m above the bottom) during the 2004 G.O. Sars MAR-ECO expedition. Results of a pelagic food-web model over the MAR suggest that alternate trophic pathways contribute significantly to this deep biomass maxima. Consumption of decapod crustacea and gelatinous zooplankton represented major portions of the total consumption by pelagic fishes. Stable isotope analysis of 63 species, from zooplankton to large benthic predators, suggest short food chains and high trophic efficiency may account for enhanced deep-pelagic biomass. Conference Object Iceland 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 Hudson, Jeanna M. Hoffman, Joel C. Falkenhaug, Tone Bergstad, Odd Aksel Heino, M. Alternate Trophic Pathways Support Enhanced Bathypelagic Biomass Over a Mid-Ocean Ridge System |
topic_facet |
Marine Biology Oceanography and Atmospheric Sciences and Meteorology |
description |
A classic paradigm of oceanic ecology is that pelagic animal biomass decreases exponentially with depth. Results of a muti-year study of the distribution and ecology of the pelagic fauna over the northern Mid-Atlantic Ridge (MAR), from Iceland to the Azores, revealed that water column biomass maxima can occur at deep meso- and bathypelagic depths (>750 m). Further, topographic association of the deep-pelagic fauna occurs at some locations. For example, bathypelagic fish abundance and biomass maxima were observed within the benthic boundary layer (<200 m above the bottom) during the 2004 G.O. Sars MAR-ECO expedition. Results of a pelagic food-web model over the MAR suggest that alternate trophic pathways contribute significantly to this deep biomass maxima. Consumption of decapod crustacea and gelatinous zooplankton represented major portions of the total consumption by pelagic fishes. Stable isotope analysis of 63 species, from zooplankton to large benthic predators, suggest short food chains and high trophic efficiency may account for enhanced deep-pelagic biomass. |
format |
Conference Object |
author |
Sutton, Tracey Hudson, Jeanna M. Hoffman, Joel C. Falkenhaug, Tone Bergstad, Odd Aksel Heino, M. |
author_facet |
Sutton, Tracey Hudson, Jeanna M. Hoffman, Joel C. Falkenhaug, Tone Bergstad, Odd Aksel Heino, M. |
author_sort |
Sutton, Tracey |
title |
Alternate Trophic Pathways Support Enhanced Bathypelagic Biomass Over a Mid-Ocean Ridge System |
title_short |
Alternate Trophic Pathways Support Enhanced Bathypelagic Biomass Over a Mid-Ocean Ridge System |
title_full |
Alternate Trophic Pathways Support Enhanced Bathypelagic Biomass Over a Mid-Ocean Ridge System |
title_fullStr |
Alternate Trophic Pathways Support Enhanced Bathypelagic Biomass Over a Mid-Ocean Ridge System |
title_full_unstemmed |
Alternate Trophic Pathways Support Enhanced Bathypelagic Biomass Over a Mid-Ocean Ridge System |
title_sort |
alternate trophic pathways support enhanced bathypelagic biomass over a mid-ocean ridge system |
publisher |
NSUWorks |
publishDate |
2011 |
url |
https://nsuworks.nova.edu/occ_facpresentations/262 https://nsuworks.nova.edu/cgi/viewcontent.cgi?article=1195&context=occ_facpresentations |
geographic |
Mid-Atlantic Ridge |
geographic_facet |
Mid-Atlantic Ridge |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures |
op_relation |
https://nsuworks.nova.edu/occ_facpresentations/262 https://nsuworks.nova.edu/cgi/viewcontent.cgi?article=1195&context=occ_facpresentations |
_version_ |
1766040301638516736 |