New insights on the trophic ecology of bathyal communities from the methane seep area off Concepción, Chile (~36º S)
Studies of the trophic structure in methane-seep habitats provide insight into the ecological function of deep-sea ecosystems. Methane seep biota on the Chilean margin likely represent a novel biogeographic province; however, little is known about the ecology of the seep fauna and particularly their...
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Language: | English |
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Blackwell
2014
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Online Access: | https://oceanrep.geomar.de/id/eprint/19715/ https://oceanrep.geomar.de/id/eprint/19715/1/Zapata-Hernandez.pdf https://doi.org/10.1111/maec.12051 |
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ftoceanrep:oai:oceanrep.geomar.de:19715 2023-05-15T17:54:43+02:00 New insights on the trophic ecology of bathyal communities from the methane seep area off Concepción, Chile (~36º S) Zapata-Hernandez, G. Sellanes, J. Thurber, A. R. Levin, L. A. Chazalon, F. Linke, Peter 2014 text https://oceanrep.geomar.de/id/eprint/19715/ https://oceanrep.geomar.de/id/eprint/19715/1/Zapata-Hernandez.pdf https://doi.org/10.1111/maec.12051 en eng Blackwell https://oceanrep.geomar.de/id/eprint/19715/1/Zapata-Hernandez.pdf Zapata-Hernandez, G., Sellanes, J., Thurber, A. R., Levin, L. A., Chazalon, F. and Linke, P. (2014) New insights on the trophic ecology of bathyal communities from the methane seep area off Concepción, Chile (~36º S). Marine Ecology, 35 . pp. 1-21. DOI 10.1111/maec.12051 <https://doi.org/10.1111/maec.12051>. doi:10.1111/maec.12051 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2014 ftoceanrep https://doi.org/10.1111/maec.12051 2023-04-07T15:06:58Z Studies of the trophic structure in methane-seep habitats provide insight into the ecological function of deep-sea ecosystems. Methane seep biota on the Chilean margin likely represent a novel biogeographic province; however, little is known about the ecology of the seep fauna and particularly their trophic support. The present study, using natural abundance stable isotopes, reveals a complex trophic structure among heterotrophic consumers, with four trophic levels supported by a diversity of food sources at a methane seep area off Concepción, Chile (~36° S). Although methanotrophy, thiotrophy and phototrophy are all identified as carbon fixation mechanisms fueling the food web within this area, most of the analysed species (87.5%) incorporate carbon derived from photosynthesis and a smaller number (12%) use carbon derived from chemosynthesis. Methane-derived carbon (MDC) incorporation was documented in 22 taxa, including sipunculids, gastropods, polychaetes and echinoderms. In addition, wide trophic niches were detected in suspension-feeding and deposit-feeding taxa, possibly associated with the use of organic matter in different stages of degradation (e.g. from fresh to refractory). Estimates of Bayesian standard ellipses area (SEAB) reveal different isotopic niche breadth in the predator fishes, the Patagonian toothfish Dissostichus eleginoides and the combtooth dogfish Centroscyllium nigrum, suggesting generalist versus specialist feeding behaviors, respectively. Top predators in the ecosystem were the Patagonian toothfish D. eleginoides and the dusky cat shark, Bythaelurus canescens. The blue hake Antimora rostrata also provides a trophic link between the benthic and pelagic systems, with a diet based primarily on pelagic-derived carrion. These findings can inform accurate ecosystem models, which are critical for effective management and conservation of methane seep and adjacent deep-sea habitats in the Southeastern Pacific. Article in Journal/Newspaper Patagonian Toothfish OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Pacific Hake ENVELOPE(15.612,15.612,66.797,66.797) Marine Ecology 35 1 1 21 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Studies of the trophic structure in methane-seep habitats provide insight into the ecological function of deep-sea ecosystems. Methane seep biota on the Chilean margin likely represent a novel biogeographic province; however, little is known about the ecology of the seep fauna and particularly their trophic support. The present study, using natural abundance stable isotopes, reveals a complex trophic structure among heterotrophic consumers, with four trophic levels supported by a diversity of food sources at a methane seep area off Concepción, Chile (~36° S). Although methanotrophy, thiotrophy and phototrophy are all identified as carbon fixation mechanisms fueling the food web within this area, most of the analysed species (87.5%) incorporate carbon derived from photosynthesis and a smaller number (12%) use carbon derived from chemosynthesis. Methane-derived carbon (MDC) incorporation was documented in 22 taxa, including sipunculids, gastropods, polychaetes and echinoderms. In addition, wide trophic niches were detected in suspension-feeding and deposit-feeding taxa, possibly associated with the use of organic matter in different stages of degradation (e.g. from fresh to refractory). Estimates of Bayesian standard ellipses area (SEAB) reveal different isotopic niche breadth in the predator fishes, the Patagonian toothfish Dissostichus eleginoides and the combtooth dogfish Centroscyllium nigrum, suggesting generalist versus specialist feeding behaviors, respectively. Top predators in the ecosystem were the Patagonian toothfish D. eleginoides and the dusky cat shark, Bythaelurus canescens. The blue hake Antimora rostrata also provides a trophic link between the benthic and pelagic systems, with a diet based primarily on pelagic-derived carrion. These findings can inform accurate ecosystem models, which are critical for effective management and conservation of methane seep and adjacent deep-sea habitats in the Southeastern Pacific. |
format |
Article in Journal/Newspaper |
author |
Zapata-Hernandez, G. Sellanes, J. Thurber, A. R. Levin, L. A. Chazalon, F. Linke, Peter |
spellingShingle |
Zapata-Hernandez, G. Sellanes, J. Thurber, A. R. Levin, L. A. Chazalon, F. Linke, Peter New insights on the trophic ecology of bathyal communities from the methane seep area off Concepción, Chile (~36º S) |
author_facet |
Zapata-Hernandez, G. Sellanes, J. Thurber, A. R. Levin, L. A. Chazalon, F. Linke, Peter |
author_sort |
Zapata-Hernandez, G. |
title |
New insights on the trophic ecology of bathyal communities from the methane seep area off Concepción, Chile (~36º S) |
title_short |
New insights on the trophic ecology of bathyal communities from the methane seep area off Concepción, Chile (~36º S) |
title_full |
New insights on the trophic ecology of bathyal communities from the methane seep area off Concepción, Chile (~36º S) |
title_fullStr |
New insights on the trophic ecology of bathyal communities from the methane seep area off Concepción, Chile (~36º S) |
title_full_unstemmed |
New insights on the trophic ecology of bathyal communities from the methane seep area off Concepción, Chile (~36º S) |
title_sort |
new insights on the trophic ecology of bathyal communities from the methane seep area off concepción, chile (~36º s) |
publisher |
Blackwell |
publishDate |
2014 |
url |
https://oceanrep.geomar.de/id/eprint/19715/ https://oceanrep.geomar.de/id/eprint/19715/1/Zapata-Hernandez.pdf https://doi.org/10.1111/maec.12051 |
long_lat |
ENVELOPE(15.612,15.612,66.797,66.797) |
geographic |
Pacific Hake |
geographic_facet |
Pacific Hake |
genre |
Patagonian Toothfish |
genre_facet |
Patagonian Toothfish |
op_relation |
https://oceanrep.geomar.de/id/eprint/19715/1/Zapata-Hernandez.pdf Zapata-Hernandez, G., Sellanes, J., Thurber, A. R., Levin, L. A., Chazalon, F. and Linke, P. (2014) New insights on the trophic ecology of bathyal communities from the methane seep area off Concepción, Chile (~36º S). Marine Ecology, 35 . pp. 1-21. DOI 10.1111/maec.12051 <https://doi.org/10.1111/maec.12051>. doi:10.1111/maec.12051 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/maec.12051 |
container_title |
Marine Ecology |
container_volume |
35 |
container_issue |
1 |
container_start_page |
1 |
op_container_end_page |
21 |
_version_ |
1766162521661636608 |