Plankton metabolic balance at two North Atlantic seamounts
We have studied the epipelagic (0–100 m) metabolic balance between gross and net community production (Pg, Pn) and community respiration (Rd) around two seamounts (Seine: 34°N, 14°W; Sedlo: 40°N, 27°W) located in the subtropical northeast Atlantic. We looked for local effects causing seamounts to in...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
---|---|
Main Authors: | , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2009
|
Subjects: | |
Online Access: | http://hdl.handle.net/10553/44235 https://doi.org/10.1016/j.dsr2.2008.12.025 |
id |
ftunivlaspalmas:oai:accedacris.ulpgc.es:10553/44235 |
---|---|
record_format |
openpolar |
spelling |
ftunivlaspalmas:oai:accedacris.ulpgc.es:10553/44235 2023-05-15T17:31:56+02:00 Plankton metabolic balance at two North Atlantic seamounts Arístegui, J. Mendonça, A. Vilas, J. C. Espino, M. Polo, I. Montero, M. F. Martins, A. Aristegui, Javier Martins, Ana Maria Montero, Maria F. 7006816204 24071446100 16432967800 35208292600 12041110700 7102553402 55952668500 227201 376411 4705263 6111529 1515861 1878283 2043805 WOS:Aristegui, J WOS:Mendonca, A WOS:Vilas, JC WOS:Espino, M WOS:Polo, I WOS:Montero, MF WOS:Martins, A 2009 http://hdl.handle.net/10553/44235 https://doi.org/10.1016/j.dsr2.2008.12.025 eng eng Deep-Sea Research Part II: Topical Studies in Oceanography 56 0967-0645 http://hdl.handle.net/10553/44235 doi:10.1016/j.dsr2.2008.12.025 71849099157 000272984900007 25 WOS:000272984900007 D-5833-2013 No ID Sí Deep-Sea Research Part II: Topical Studies in Oceanography [ISSN 0967-0645], v. 56 (25), p. 2646-2655 2510 Oceanografía Seamounts Metabolic balance Organic matter North Atlantic Sedlo Seine (34-41ºN 14-27ºW) info:eu-repo/semantics/Article Article 2009 ftunivlaspalmas https://doi.org/10.1016/j.dsr2.2008.12.025 2021-02-03T00:10:29Z We have studied the epipelagic (0–100 m) metabolic balance between gross and net community production (Pg, Pn) and community respiration (Rd) around two seamounts (Seine: 34°N, 14°W; Sedlo: 40°N, 27°W) located in the subtropical northeast Atlantic. We looked for local effects causing seamounts to increase community production and/or community respiration with respect to the surrounding open ocean. Comparatively, Seine presented similar average living plankton biomass—chlorophyll a (Chl) and particulate proteins (Pt)—but higher Pg, due to higher Rd, presumably the result of organic matter loading from the NW Africa upwelling system, as supported by field results and satellite imagery. Nevertheless, the large temporal and spatial variability at each seamount make the average differences non-significant. Temporal variability in P, Rd and Chl was evident around the two seamounts. Sedlo showed higher Rd, Chl and Pt during winter, but higher Pn in summer. Seine presented higher Pt, Chl and Pn during spring, but higher Rd in summer. On average, the metabolic balance was heterotrophic (Rd>Pg) during all the sampling periods and at most stations of the two seamounts. Both Sedlo and Seine, showed higher Rd with respect to average values reported for the global ocean. A clear seamount effect on phytoplankton was only observed in Seine during spring, when Chl and Pt were enhanced at the summit of the seamount. Our results suggest that, rather than increasing primary production significantly, the two seamounts could act as trapping mechanisms for organic matter, favoured by the development of Taylor Columns on the top of the seamounts. Nevertheless these effects seem to be of a lower magnitude than changes caused by temporal or regional variability, questioning the role of these seamounts as hot-spots of productivity in the oceans. 2655 2646 Article in Journal/Newspaper North Atlantic Northeast Atlantic Universidad de Las Palmas de Gran Canaria: Acceda Deep Sea Research Part II: Topical Studies in Oceanography 56 25 2646 2655 |
institution |
Open Polar |
collection |
Universidad de Las Palmas de Gran Canaria: Acceda |
op_collection_id |
ftunivlaspalmas |
language |
English |
topic |
2510 Oceanografía Seamounts Metabolic balance Organic matter North Atlantic Sedlo Seine (34-41ºN 14-27ºW) |
spellingShingle |
2510 Oceanografía Seamounts Metabolic balance Organic matter North Atlantic Sedlo Seine (34-41ºN 14-27ºW) Arístegui, J. Mendonça, A. Vilas, J. C. Espino, M. Polo, I. Montero, M. F. Martins, A. Plankton metabolic balance at two North Atlantic seamounts |
topic_facet |
2510 Oceanografía Seamounts Metabolic balance Organic matter North Atlantic Sedlo Seine (34-41ºN 14-27ºW) |
description |
We have studied the epipelagic (0–100 m) metabolic balance between gross and net community production (Pg, Pn) and community respiration (Rd) around two seamounts (Seine: 34°N, 14°W; Sedlo: 40°N, 27°W) located in the subtropical northeast Atlantic. We looked for local effects causing seamounts to increase community production and/or community respiration with respect to the surrounding open ocean. Comparatively, Seine presented similar average living plankton biomass—chlorophyll a (Chl) and particulate proteins (Pt)—but higher Pg, due to higher Rd, presumably the result of organic matter loading from the NW Africa upwelling system, as supported by field results and satellite imagery. Nevertheless, the large temporal and spatial variability at each seamount make the average differences non-significant. Temporal variability in P, Rd and Chl was evident around the two seamounts. Sedlo showed higher Rd, Chl and Pt during winter, but higher Pn in summer. Seine presented higher Pt, Chl and Pn during spring, but higher Rd in summer. On average, the metabolic balance was heterotrophic (Rd>Pg) during all the sampling periods and at most stations of the two seamounts. Both Sedlo and Seine, showed higher Rd with respect to average values reported for the global ocean. A clear seamount effect on phytoplankton was only observed in Seine during spring, when Chl and Pt were enhanced at the summit of the seamount. Our results suggest that, rather than increasing primary production significantly, the two seamounts could act as trapping mechanisms for organic matter, favoured by the development of Taylor Columns on the top of the seamounts. Nevertheless these effects seem to be of a lower magnitude than changes caused by temporal or regional variability, questioning the role of these seamounts as hot-spots of productivity in the oceans. 2655 2646 |
author2 |
Aristegui, Javier Martins, Ana Maria Montero, Maria F. 7006816204 24071446100 16432967800 35208292600 12041110700 7102553402 55952668500 227201 376411 4705263 6111529 1515861 1878283 2043805 WOS:Aristegui, J WOS:Mendonca, A WOS:Vilas, JC WOS:Espino, M WOS:Polo, I WOS:Montero, MF WOS:Martins, A |
format |
Article in Journal/Newspaper |
author |
Arístegui, J. Mendonça, A. Vilas, J. C. Espino, M. Polo, I. Montero, M. F. Martins, A. |
author_facet |
Arístegui, J. Mendonça, A. Vilas, J. C. Espino, M. Polo, I. Montero, M. F. Martins, A. |
author_sort |
Arístegui, J. |
title |
Plankton metabolic balance at two North Atlantic seamounts |
title_short |
Plankton metabolic balance at two North Atlantic seamounts |
title_full |
Plankton metabolic balance at two North Atlantic seamounts |
title_fullStr |
Plankton metabolic balance at two North Atlantic seamounts |
title_full_unstemmed |
Plankton metabolic balance at two North Atlantic seamounts |
title_sort |
plankton metabolic balance at two north atlantic seamounts |
publishDate |
2009 |
url |
http://hdl.handle.net/10553/44235 https://doi.org/10.1016/j.dsr2.2008.12.025 |
genre |
North Atlantic Northeast Atlantic |
genre_facet |
North Atlantic Northeast Atlantic |
op_source |
Deep-Sea Research Part II: Topical Studies in Oceanography [ISSN 0967-0645], v. 56 (25), p. 2646-2655 |
op_relation |
Deep-Sea Research Part II: Topical Studies in Oceanography 56 0967-0645 http://hdl.handle.net/10553/44235 doi:10.1016/j.dsr2.2008.12.025 71849099157 000272984900007 25 WOS:000272984900007 D-5833-2013 No ID Sí |
op_doi |
https://doi.org/10.1016/j.dsr2.2008.12.025 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
56 |
container_issue |
25 |
container_start_page |
2646 |
op_container_end_page |
2655 |
_version_ |
1766129839381676032 |