Balancing end-to-end budgets of the Georges Bank ecosystem
Author Posting. © Elsevier, 2007. This is the author's version of the work. It is posted here by permission of Elsevier for personal use, not for redistribution. The definitive version was published in Progress In Oceanography 74 (2007): 423-448, doi:10.1016/j.pocean.2007.05.003. Oceanographic...
Published in: | Progress in Oceanography |
---|---|
Main Authors: | , , , , , , , , , , , , |
Format: | Report |
Language: | English |
Published: |
2007
|
Subjects: | |
Online Access: | https://hdl.handle.net/1912/1836 |
id |
ftwhoas:oai:darchive.mblwhoilibrary.org:1912/1836 |
---|---|
record_format |
openpolar |
spelling |
ftwhoas:oai:darchive.mblwhoilibrary.org:1912/1836 2023-05-15T17:45:46+02:00 Balancing end-to-end budgets of the Georges Bank ecosystem Steele, John H. Collie, Jeremy S. Bisagni, James J. Gifford, Dian J. Fogarty, Michael J. Link, Jason S. Sullivan, B. K. Sieracki, Michael E. Beet, Andrew R. Mountain, David G. Durbin, Edward G. Palka, D. Stockhausen, W. T. 2007-05-09 application/pdf https://hdl.handle.net/1912/1836 en_US eng https://doi.org/10.1016/j.pocean.2007.05.003 https://hdl.handle.net/1912/1836 Bottom-up Energy budget Food web Georges Bank Physical forcing Top-down Preprint 2007 ftwhoas https://doi.org/10.1016/j.pocean.2007.05.003 2022-05-28T22:57:22Z Author Posting. © Elsevier, 2007. This is the author's version of the work. It is posted here by permission of Elsevier for personal use, not for redistribution. The definitive version was published in Progress In Oceanography 74 (2007): 423-448, doi:10.1016/j.pocean.2007.05.003. Oceanographic regimes on the continental shelf display a great range in the time scales of physical exchange, biochemical processes and trophic transfers. The close surface-to-seabed physical coupling at intermediate scales of weeks to months means that the open ocean simplification to a purely pelagic food web is inadequate. Top-down trophic depictions, starting from the fish populations, are insufficient to constrain a system involving extensive nutrient recycling at lower trophic levels and subject to physical forcing as well as fishing. These pelagic-benthic interactions are found on all continental shelves but are particularly important on the relatively shallow Georges Bank in the northwest Atlantic. We have generated budgets for the lower food web for three physical regimes (well mixed, transitional and stratified) and for three seasons (spring, summer and fall/winter). The calculations show that vertical mixing and lateral exchange between the three regimes are important for zooplankton production as well as for nutrient input. Benthic suspension feeders are an additional critical pathway for transfers to higher trophic levels. Estimates of production by mesozooplankton, benthic suspension feeders and deposit feeders, derived primarily from data collected during the GLOBEC years of 1995-1999, provide input to an upper food web. Diets of commercial fish populations are used to calculate food requirements in three fish categories, planktivores, benthivores and piscivores, for four decades, 1963-2002, between which there were major changes in the fish communities. Comparisons of inputs from the lower web with fish energetic requirements for plankton and benthos indicate that we obtained reasonable agreement for the last three ... Report Northwest Atlantic Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Progress in Oceanography 74 4 423 448 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
Bottom-up Energy budget Food web Georges Bank Physical forcing Top-down |
spellingShingle |
Bottom-up Energy budget Food web Georges Bank Physical forcing Top-down Steele, John H. Collie, Jeremy S. Bisagni, James J. Gifford, Dian J. Fogarty, Michael J. Link, Jason S. Sullivan, B. K. Sieracki, Michael E. Beet, Andrew R. Mountain, David G. Durbin, Edward G. Palka, D. Stockhausen, W. T. Balancing end-to-end budgets of the Georges Bank ecosystem |
topic_facet |
Bottom-up Energy budget Food web Georges Bank Physical forcing Top-down |
description |
Author Posting. © Elsevier, 2007. This is the author's version of the work. It is posted here by permission of Elsevier for personal use, not for redistribution. The definitive version was published in Progress In Oceanography 74 (2007): 423-448, doi:10.1016/j.pocean.2007.05.003. Oceanographic regimes on the continental shelf display a great range in the time scales of physical exchange, biochemical processes and trophic transfers. The close surface-to-seabed physical coupling at intermediate scales of weeks to months means that the open ocean simplification to a purely pelagic food web is inadequate. Top-down trophic depictions, starting from the fish populations, are insufficient to constrain a system involving extensive nutrient recycling at lower trophic levels and subject to physical forcing as well as fishing. These pelagic-benthic interactions are found on all continental shelves but are particularly important on the relatively shallow Georges Bank in the northwest Atlantic. We have generated budgets for the lower food web for three physical regimes (well mixed, transitional and stratified) and for three seasons (spring, summer and fall/winter). The calculations show that vertical mixing and lateral exchange between the three regimes are important for zooplankton production as well as for nutrient input. Benthic suspension feeders are an additional critical pathway for transfers to higher trophic levels. Estimates of production by mesozooplankton, benthic suspension feeders and deposit feeders, derived primarily from data collected during the GLOBEC years of 1995-1999, provide input to an upper food web. Diets of commercial fish populations are used to calculate food requirements in three fish categories, planktivores, benthivores and piscivores, for four decades, 1963-2002, between which there were major changes in the fish communities. Comparisons of inputs from the lower web with fish energetic requirements for plankton and benthos indicate that we obtained reasonable agreement for the last three ... |
format |
Report |
author |
Steele, John H. Collie, Jeremy S. Bisagni, James J. Gifford, Dian J. Fogarty, Michael J. Link, Jason S. Sullivan, B. K. Sieracki, Michael E. Beet, Andrew R. Mountain, David G. Durbin, Edward G. Palka, D. Stockhausen, W. T. |
author_facet |
Steele, John H. Collie, Jeremy S. Bisagni, James J. Gifford, Dian J. Fogarty, Michael J. Link, Jason S. Sullivan, B. K. Sieracki, Michael E. Beet, Andrew R. Mountain, David G. Durbin, Edward G. Palka, D. Stockhausen, W. T. |
author_sort |
Steele, John H. |
title |
Balancing end-to-end budgets of the Georges Bank ecosystem |
title_short |
Balancing end-to-end budgets of the Georges Bank ecosystem |
title_full |
Balancing end-to-end budgets of the Georges Bank ecosystem |
title_fullStr |
Balancing end-to-end budgets of the Georges Bank ecosystem |
title_full_unstemmed |
Balancing end-to-end budgets of the Georges Bank ecosystem |
title_sort |
balancing end-to-end budgets of the georges bank ecosystem |
publishDate |
2007 |
url |
https://hdl.handle.net/1912/1836 |
genre |
Northwest Atlantic |
genre_facet |
Northwest Atlantic |
op_relation |
https://doi.org/10.1016/j.pocean.2007.05.003 https://hdl.handle.net/1912/1836 |
op_doi |
https://doi.org/10.1016/j.pocean.2007.05.003 |
container_title |
Progress in Oceanography |
container_volume |
74 |
container_issue |
4 |
container_start_page |
423 |
op_container_end_page |
448 |
_version_ |
1766149009147166720 |