Faunal trophic structure at hydrothermal vents on the southern Mohn’s Ridge, Arctic Ocean
We explore the trophic ecology of heterotrophic fauna associated with a high temperature (HT) vent, 2 low temperature vents, a ‘near-HT vent’ habitat and a non-vent site situated at upper bathyal depths on the southern Mohn’s Ridge in the Arctic Ocean. Only a single taxon (the gastropod Pseudosetia...
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ftuhipublicatio:oai:pure.atira.dk:publications/b5156f0c-1df2-495e-9d8a-543100861f43 2024-09-15T17:50:43+00:00 Faunal trophic structure at hydrothermal vents on the southern Mohn’s Ridge, Arctic Ocean Sweetman, Andrew K Levin, Lisa A. Rapp, Hans T. Schander, Christoffer 2013-01-21 https://pure.uhi.ac.uk/en/publications/b5156f0c-1df2-495e-9d8a-543100861f43 https://doi.org/10.3354/meps10050 eng eng https://pure.uhi.ac.uk/en/publications/b5156f0c-1df2-495e-9d8a-543100861f43 info:eu-repo/semantics/restrictedAccess Sweetman , A K , Levin , L A , Rapp , H T & Schander , C 2013 , ' Faunal trophic structure at hydrothermal vents on the southern Mohn’s Ridge, Arctic Ocean ' , Marine Ecology Progress Series , vol. 473 , pp. 115-131 . https://doi.org/10.3354/meps10050 Fauna Hydrothermal vents Mixing models Southern Mohn's Ridge Stable isotopes article 2013 ftuhipublicatio https://doi.org/10.3354/meps10050 2024-07-29T23:37:15Z We explore the trophic ecology of heterotrophic fauna associated with a high temperature (HT) vent, 2 low temperature vents, a ‘near-HT vent’ habitat and a non-vent site situated at upper bathyal depths on the southern Mohn’s Ridge in the Arctic Ocean. Only a single taxon (the gastropod Pseudosetia griegi) was found at the high temperature vent habitat. Their mean δ13C values were significantly lighter than conspecifics from a low temperature vent habitat within the same vent field, reflecting the incorporation of sulfide oxidizing bacteria into the biomass of the animals. The majority of fauna from the low temperature, near-HT, and non-vent habitats had isotopic signatures indicative of assimilation of photosynthetic material. However, we found remarkably diverse isotopic compositions among the fauna sampled here, with a small sub-set of fauna at each site possessing C and N isotopic signatures indicative of incorporation of chemosynthetic production. Moreover, when isotopic signatures of similar taxa were compared from the same sample, δ13C signatures suggested a high degree of trophic complexity can exist over relatively small spatial scales at vent habitats on the southern Mohn’s Ridge. The high contribution of photosynthetic food material to faunal diets and variability in food types may result from the upper bathyal venting depth and sedimentary nature of the vents. We hypothesize that the upper bathyal depth of active venting may lead to iron enhancement of surface photosynthetic production, especially in high nutrient areas, which ultimately sinks to the seabed where it is incorporated by fauna around the vents. Article in Journal/Newspaper Arctic Arctic Ocean University of the Highlands and Islands: Research Database of UHI Marine Ecology Progress Series 473 115 131 |
institution |
Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
topic |
Fauna Hydrothermal vents Mixing models Southern Mohn's Ridge Stable isotopes |
spellingShingle |
Fauna Hydrothermal vents Mixing models Southern Mohn's Ridge Stable isotopes Sweetman, Andrew K Levin, Lisa A. Rapp, Hans T. Schander, Christoffer Faunal trophic structure at hydrothermal vents on the southern Mohn’s Ridge, Arctic Ocean |
topic_facet |
Fauna Hydrothermal vents Mixing models Southern Mohn's Ridge Stable isotopes |
description |
We explore the trophic ecology of heterotrophic fauna associated with a high temperature (HT) vent, 2 low temperature vents, a ‘near-HT vent’ habitat and a non-vent site situated at upper bathyal depths on the southern Mohn’s Ridge in the Arctic Ocean. Only a single taxon (the gastropod Pseudosetia griegi) was found at the high temperature vent habitat. Their mean δ13C values were significantly lighter than conspecifics from a low temperature vent habitat within the same vent field, reflecting the incorporation of sulfide oxidizing bacteria into the biomass of the animals. The majority of fauna from the low temperature, near-HT, and non-vent habitats had isotopic signatures indicative of assimilation of photosynthetic material. However, we found remarkably diverse isotopic compositions among the fauna sampled here, with a small sub-set of fauna at each site possessing C and N isotopic signatures indicative of incorporation of chemosynthetic production. Moreover, when isotopic signatures of similar taxa were compared from the same sample, δ13C signatures suggested a high degree of trophic complexity can exist over relatively small spatial scales at vent habitats on the southern Mohn’s Ridge. The high contribution of photosynthetic food material to faunal diets and variability in food types may result from the upper bathyal venting depth and sedimentary nature of the vents. We hypothesize that the upper bathyal depth of active venting may lead to iron enhancement of surface photosynthetic production, especially in high nutrient areas, which ultimately sinks to the seabed where it is incorporated by fauna around the vents. |
format |
Article in Journal/Newspaper |
author |
Sweetman, Andrew K Levin, Lisa A. Rapp, Hans T. Schander, Christoffer |
author_facet |
Sweetman, Andrew K Levin, Lisa A. Rapp, Hans T. Schander, Christoffer |
author_sort |
Sweetman, Andrew K |
title |
Faunal trophic structure at hydrothermal vents on the southern Mohn’s Ridge, Arctic Ocean |
title_short |
Faunal trophic structure at hydrothermal vents on the southern Mohn’s Ridge, Arctic Ocean |
title_full |
Faunal trophic structure at hydrothermal vents on the southern Mohn’s Ridge, Arctic Ocean |
title_fullStr |
Faunal trophic structure at hydrothermal vents on the southern Mohn’s Ridge, Arctic Ocean |
title_full_unstemmed |
Faunal trophic structure at hydrothermal vents on the southern Mohn’s Ridge, Arctic Ocean |
title_sort |
faunal trophic structure at hydrothermal vents on the southern mohn’s ridge, arctic ocean |
publishDate |
2013 |
url |
https://pure.uhi.ac.uk/en/publications/b5156f0c-1df2-495e-9d8a-543100861f43 https://doi.org/10.3354/meps10050 |
genre |
Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Ocean |
op_source |
Sweetman , A K , Levin , L A , Rapp , H T & Schander , C 2013 , ' Faunal trophic structure at hydrothermal vents on the southern Mohn’s Ridge, Arctic Ocean ' , Marine Ecology Progress Series , vol. 473 , pp. 115-131 . https://doi.org/10.3354/meps10050 |
op_relation |
https://pure.uhi.ac.uk/en/publications/b5156f0c-1df2-495e-9d8a-543100861f43 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.3354/meps10050 |
container_title |
Marine Ecology Progress Series |
container_volume |
473 |
container_start_page |
115 |
op_container_end_page |
131 |
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1810292528947134464 |