Oceanographic setting and short-timescale environmental variability at an Arctic seamount sponge ground
ABSTRACT Mass occurrences of large sponges, or ‘sponge grounds’, are found globally in a range of oceanographic settings. Interest in these grounds is growing because of their ecological importance as hotspots of biodiversity, their role in biogeochemical cycling and bentho-pelagic coupling, the bio...
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ftzenodo:oai:zenodo.org:1443323 2024-09-15T18:10:06+00:00 Oceanographic setting and short-timescale environmental variability at an Arctic seamount sponge ground Roberts, EM Mienis, F Rapp, HT Hanz, U Meyer, HK Davies, AJ 2018-06-11 https://doi.org/10.1016/j.dsr.2018.06.007 unknown Zenodo https://www.sciencedirect.com/science/article/pii/S0967063718300256?via%3Dihub https://doi.pangaea.de/10.1594/PANGAEA.891035 https://zenodo.org/communities/sponges https://zenodo.org/communities/eu https://doi.org/10.1016/j.dsr.2018.06.007 oai:zenodo.org:1443323 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode Deep-Sea Research Part I, 138, 98-113, (2018-06-11) Sponges seamounts mid-ocean ridge deep sea Hexactinellida Astrophorida European Union (EU) Horizon 2020 Grant Agreement No 679849 Deep-sea Sponge Grounds Ecosystems of the North Atlantic: an integrated approach towards their preservation and sustainable exploitation info:eu-repo/semantics/article 2018 ftzenodo https://doi.org/10.1016/j.dsr.2018.06.007 2024-07-26T06:01:49Z ABSTRACT Mass occurrences of large sponges, or ‘sponge grounds’, are found globally in a range of oceanographic settings. Interest in these grounds is growing because of their ecological importance as hotspots of biodiversity, their role in biogeochemical cycling and bentho-pelagic coupling, the biotechnological potential of their constituent sponges, and their perceived vulnerability to physical disturbance and environmental change. Little is known about the environmental conditions required for sponges to persist and for grounds to form, and very few studies have explicitly characterised and interpreted the importance of oceanographic conditions. Here, results are presented of the first observational oceanographic campaign at a known sponge ground on the Schultz Massif Seamount (SMS; Arctic Mid-Ocean Ridge, Greenland / Norwegian Seas). The campaign consisted of water column profiling and short-term deployment of a benthic lander. It was supported by multibeam echosounder bathymetry and remotely operated vehicle video surveys. The seamount summit hosted several environmental factors potentially beneficial to sponges. It occurred within relatively nutrient-rich waters and was regularly flushed from above with slightly warmer, oxygen-enriched Norwegian Arctic Intermediate Water. It was exposed to elevated suspended particulate matter levels and oscillating currents (with diurnal tidal frequency) likely to enhance food supply and prevent smothering of the sponges by sedimentation. Elevated chlorophyll a concentration was observed in lenses above the summit, which may indicate particle retention by seamount-scale circulation patterns. High sponge density and diversity observed on the summit is likely explained by the combination of several beneficial factors, the coincidence of which at the summit arises from interaction between seamount geomorphology, hydrodynamic regime, and water column structure. Neighbouring seamounts along the mid-ocean ridge are likely to present similarly complex oceanographic settings and, ... Article in Journal/Newspaper Greenland North Atlantic Zenodo Deep Sea Research Part I: Oceanographic Research Papers 138 98 113 |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Sponges seamounts mid-ocean ridge deep sea Hexactinellida Astrophorida European Union (EU) Horizon 2020 Grant Agreement No 679849 Deep-sea Sponge Grounds Ecosystems of the North Atlantic: an integrated approach towards their preservation and sustainable exploitation |
spellingShingle |
Sponges seamounts mid-ocean ridge deep sea Hexactinellida Astrophorida European Union (EU) Horizon 2020 Grant Agreement No 679849 Deep-sea Sponge Grounds Ecosystems of the North Atlantic: an integrated approach towards their preservation and sustainable exploitation Roberts, EM Mienis, F Rapp, HT Hanz, U Meyer, HK Davies, AJ Oceanographic setting and short-timescale environmental variability at an Arctic seamount sponge ground |
topic_facet |
Sponges seamounts mid-ocean ridge deep sea Hexactinellida Astrophorida European Union (EU) Horizon 2020 Grant Agreement No 679849 Deep-sea Sponge Grounds Ecosystems of the North Atlantic: an integrated approach towards their preservation and sustainable exploitation |
description |
ABSTRACT Mass occurrences of large sponges, or ‘sponge grounds’, are found globally in a range of oceanographic settings. Interest in these grounds is growing because of their ecological importance as hotspots of biodiversity, their role in biogeochemical cycling and bentho-pelagic coupling, the biotechnological potential of their constituent sponges, and their perceived vulnerability to physical disturbance and environmental change. Little is known about the environmental conditions required for sponges to persist and for grounds to form, and very few studies have explicitly characterised and interpreted the importance of oceanographic conditions. Here, results are presented of the first observational oceanographic campaign at a known sponge ground on the Schultz Massif Seamount (SMS; Arctic Mid-Ocean Ridge, Greenland / Norwegian Seas). The campaign consisted of water column profiling and short-term deployment of a benthic lander. It was supported by multibeam echosounder bathymetry and remotely operated vehicle video surveys. The seamount summit hosted several environmental factors potentially beneficial to sponges. It occurred within relatively nutrient-rich waters and was regularly flushed from above with slightly warmer, oxygen-enriched Norwegian Arctic Intermediate Water. It was exposed to elevated suspended particulate matter levels and oscillating currents (with diurnal tidal frequency) likely to enhance food supply and prevent smothering of the sponges by sedimentation. Elevated chlorophyll a concentration was observed in lenses above the summit, which may indicate particle retention by seamount-scale circulation patterns. High sponge density and diversity observed on the summit is likely explained by the combination of several beneficial factors, the coincidence of which at the summit arises from interaction between seamount geomorphology, hydrodynamic regime, and water column structure. Neighbouring seamounts along the mid-ocean ridge are likely to present similarly complex oceanographic settings and, ... |
format |
Article in Journal/Newspaper |
author |
Roberts, EM Mienis, F Rapp, HT Hanz, U Meyer, HK Davies, AJ |
author_facet |
Roberts, EM Mienis, F Rapp, HT Hanz, U Meyer, HK Davies, AJ |
author_sort |
Roberts, EM |
title |
Oceanographic setting and short-timescale environmental variability at an Arctic seamount sponge ground |
title_short |
Oceanographic setting and short-timescale environmental variability at an Arctic seamount sponge ground |
title_full |
Oceanographic setting and short-timescale environmental variability at an Arctic seamount sponge ground |
title_fullStr |
Oceanographic setting and short-timescale environmental variability at an Arctic seamount sponge ground |
title_full_unstemmed |
Oceanographic setting and short-timescale environmental variability at an Arctic seamount sponge ground |
title_sort |
oceanographic setting and short-timescale environmental variability at an arctic seamount sponge ground |
publisher |
Zenodo |
publishDate |
2018 |
url |
https://doi.org/10.1016/j.dsr.2018.06.007 |
genre |
Greenland North Atlantic |
genre_facet |
Greenland North Atlantic |
op_source |
Deep-Sea Research Part I, 138, 98-113, (2018-06-11) |
op_relation |
https://www.sciencedirect.com/science/article/pii/S0967063718300256?via%3Dihub https://doi.pangaea.de/10.1594/PANGAEA.891035 https://zenodo.org/communities/sponges https://zenodo.org/communities/eu https://doi.org/10.1016/j.dsr.2018.06.007 oai:zenodo.org:1443323 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.1016/j.dsr.2018.06.007 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
138 |
container_start_page |
98 |
op_container_end_page |
113 |
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1810447704030969856 |