The cold-water coral community as a hot spot for carbon cycling on continental margins: A food-web analysis from Rockall Bank (northeast Atlantic)
We present a quantitative food-web analysis of the cold-water coral community, i.e., the assembly of living corals, dead coral branches and sediment beneath, associated with the reef-building Lophelia pertusa on the giant carbonate mounds at,800-m depth at Rockall Bank. Carbon flows, 140 flows among...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.572.3029 2023-05-15T17:08:44+02:00 The cold-water coral community as a hot spot for carbon cycling on continental margins: A food-web analysis from Rockall Bank (northeast Atlantic) Carlo H. R. Heipa The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.572.3029 http://www.aslo.org/lo/toc/vol_54/issue_6/1829.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.572.3029 http://www.aslo.org/lo/toc/vol_54/issue_6/1829.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.aslo.org/lo/toc/vol_54/issue_6/1829.pdf text ftciteseerx 2016-01-08T12:35:08Z We present a quantitative food-web analysis of the cold-water coral community, i.e., the assembly of living corals, dead coral branches and sediment beneath, associated with the reef-building Lophelia pertusa on the giant carbonate mounds at,800-m depth at Rockall Bank. Carbon flows, 140 flows among 20 biotic and abiotic compartments, were reconstructed using linear inverse modeling by merging data on biomass, on-board respiration, d15N values, and literature constraints on assimilation and growth efficiencies. The carbon flux to the coral community was 75.1 mmol C m22 d21 and was partitioned among (phyto)detritus (81%) and zooplankton (19%). Carbon ingestion by the living coral was only 9 % of the carbon ingestion by the whole community and was portioned among (phyto)detritus (72%) and zooplankton (28%). Carbon cycling in the community was dominated by suspension- and filter-feeding macrofauna associated with dead coral branches. Sediment traps mounted on a bottom lander trapped 0.77 mmol C m22 d21 (annual average), which is almost two orders of magnitude lower than total carbon ingestion (75.1) and respiration (57.3 mmol C m22 d21) by the coral community. This discrepancy is explained in two ways: the coral community intercepts organic matter that would otherwise not settle on the seafloor, and through their action as ecosystem engineers, the increased turbulence generated by the coral framework and organic-matter depletion in the boundary layer augment the influx to the Text Lophelia pertusa Northeast Atlantic Unknown Rockall Bank ENVELOPE(-16.519,-16.519,55.821,55.821) |
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Open Polar |
collection |
Unknown |
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ftciteseerx |
language |
English |
description |
We present a quantitative food-web analysis of the cold-water coral community, i.e., the assembly of living corals, dead coral branches and sediment beneath, associated with the reef-building Lophelia pertusa on the giant carbonate mounds at,800-m depth at Rockall Bank. Carbon flows, 140 flows among 20 biotic and abiotic compartments, were reconstructed using linear inverse modeling by merging data on biomass, on-board respiration, d15N values, and literature constraints on assimilation and growth efficiencies. The carbon flux to the coral community was 75.1 mmol C m22 d21 and was partitioned among (phyto)detritus (81%) and zooplankton (19%). Carbon ingestion by the living coral was only 9 % of the carbon ingestion by the whole community and was portioned among (phyto)detritus (72%) and zooplankton (28%). Carbon cycling in the community was dominated by suspension- and filter-feeding macrofauna associated with dead coral branches. Sediment traps mounted on a bottom lander trapped 0.77 mmol C m22 d21 (annual average), which is almost two orders of magnitude lower than total carbon ingestion (75.1) and respiration (57.3 mmol C m22 d21) by the coral community. This discrepancy is explained in two ways: the coral community intercepts organic matter that would otherwise not settle on the seafloor, and through their action as ecosystem engineers, the increased turbulence generated by the coral framework and organic-matter depletion in the boundary layer augment the influx to the |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Carlo H. R. Heipa |
spellingShingle |
Carlo H. R. Heipa The cold-water coral community as a hot spot for carbon cycling on continental margins: A food-web analysis from Rockall Bank (northeast Atlantic) |
author_facet |
Carlo H. R. Heipa |
author_sort |
Carlo H. R. Heipa |
title |
The cold-water coral community as a hot spot for carbon cycling on continental margins: A food-web analysis from Rockall Bank (northeast Atlantic) |
title_short |
The cold-water coral community as a hot spot for carbon cycling on continental margins: A food-web analysis from Rockall Bank (northeast Atlantic) |
title_full |
The cold-water coral community as a hot spot for carbon cycling on continental margins: A food-web analysis from Rockall Bank (northeast Atlantic) |
title_fullStr |
The cold-water coral community as a hot spot for carbon cycling on continental margins: A food-web analysis from Rockall Bank (northeast Atlantic) |
title_full_unstemmed |
The cold-water coral community as a hot spot for carbon cycling on continental margins: A food-web analysis from Rockall Bank (northeast Atlantic) |
title_sort |
cold-water coral community as a hot spot for carbon cycling on continental margins: a food-web analysis from rockall bank (northeast atlantic) |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.572.3029 http://www.aslo.org/lo/toc/vol_54/issue_6/1829.pdf |
long_lat |
ENVELOPE(-16.519,-16.519,55.821,55.821) |
geographic |
Rockall Bank |
geographic_facet |
Rockall Bank |
genre |
Lophelia pertusa Northeast Atlantic |
genre_facet |
Lophelia pertusa Northeast Atlantic |
op_source |
http://www.aslo.org/lo/toc/vol_54/issue_6/1829.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.572.3029 http://www.aslo.org/lo/toc/vol_54/issue_6/1829.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766064588008194048 |