Results from an in situ experiment at the deep-sea observatory HAUSGARTEN
To study the response of the smaller benthic biota to larger food-falls and their possible effects on the biodiversity at the deep seafloor, we deployed the halves of a sagittally bisected porpoise (1.3 m in length; each half approximately 18 kg) at 2500 m and 5400 m water depth at the LTER (Long-Te...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.873530 2023-05-15T14:26:41+02:00 Results from an in situ experiment at the deep-sea observatory HAUSGARTEN Soltwedel, Thomas Guilini, Katja Sauter, Eberhard-Jürgen Schewe, Ingo Hasemann, Christiane MEDIAN LATITUDE: 79.096572 * MEDIAN LONGITUDE: 3.742311 * SOUTH-BOUND LATITUDE: 78.609800 * WEST-BOUND LONGITUDE: 2.842400 * NORTH-BOUND LATITUDE: 79.603800 * EAST-BOUND LONGITUDE: 6.092800 * DATE/TIME START: 2005-08-19T05:08:00 * DATE/TIME END: 2005-09-25T08:24:00 2017-03-14 application/zip, 7 datasets https://doi.pangaea.de/10.1594/PANGAEA.873530 https://doi.org/10.1594/PANGAEA.873530 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.873530 https://doi.org/10.1594/PANGAEA.873530 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Soltwedel, Thomas; Guilini, Katja; Sauter, Eberhard-Jürgen; Schewe, Ingo; Hasemann, Christiane (2017): Local effects of large food-falls on nematode diversity at an arctic deep-sea site:Results from an in situ experiment at the deep-sea observatory HAUSGARTEN. Journal of Experimental Marine Biology and Ecology, https://doi.org/10.1016/j.jembe.2017.03.002 FRAM FRontiers in Arctic marine Monitoring Hausgarten Long-term Investigation at AWI-Hausgarten off Svalbard Dataset 2017 ftpangaea https://doi.org/10.1594/PANGAEA.873530 https://doi.org/10.1016/j.jembe.2017.03.002 2023-01-20T07:33:54Z To study the response of the smaller benthic biota to larger food-falls and their possible effects on the biodiversity at the deep seafloor, we deployed the halves of a sagittally bisected porpoise (1.3 m in length; each half approximately 18 kg) at 2500 m and 5400 m water depth at the LTER (Long-Term Ecological Research) observatory HAUSGARTEN in the eastern Fram Strait. The sampling of sediments beneath the carcass halves and at different distances (0, 20, 40 cm) from these artificial food-falls was carried out by means of push-corers handled by a Remotely Operated Vehicle five weeks after the food deployment. The samples provided empirical evidence for a quick response by sediment-inhabiting bacteria and metazoan meiofauna to the carcasses at both water depths. Compared to control sediments, the substantial pulse of organic matter also led to generally increased meiofauna/nematode densities around the artificial food-falls. The comparison of nematode communities in sediments affected by the carcasses with those in background control sediments exhibited shifts in the structural composition and the associated trophic and functional diversity of the nematode fauna. Our results confirmed that the impact of large food-falls on the deep benthic community largely depends on environmental factors (water depth, alternative food sources) as well as the background species composition, i.e., the structure of the prevailing meiofauna/nematode assemblages and the composition of the necrophagous community present in the wider area. Dataset Arctic Arctic Fram Strait Svalbard PANGAEA - Data Publisher for Earth & Environmental Science Arctic Svalbard ENVELOPE(2.842400,6.092800,79.603800,78.609800) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
FRAM FRontiers in Arctic marine Monitoring Hausgarten Long-term Investigation at AWI-Hausgarten off Svalbard |
spellingShingle |
FRAM FRontiers in Arctic marine Monitoring Hausgarten Long-term Investigation at AWI-Hausgarten off Svalbard Soltwedel, Thomas Guilini, Katja Sauter, Eberhard-Jürgen Schewe, Ingo Hasemann, Christiane Results from an in situ experiment at the deep-sea observatory HAUSGARTEN |
topic_facet |
FRAM FRontiers in Arctic marine Monitoring Hausgarten Long-term Investigation at AWI-Hausgarten off Svalbard |
description |
To study the response of the smaller benthic biota to larger food-falls and their possible effects on the biodiversity at the deep seafloor, we deployed the halves of a sagittally bisected porpoise (1.3 m in length; each half approximately 18 kg) at 2500 m and 5400 m water depth at the LTER (Long-Term Ecological Research) observatory HAUSGARTEN in the eastern Fram Strait. The sampling of sediments beneath the carcass halves and at different distances (0, 20, 40 cm) from these artificial food-falls was carried out by means of push-corers handled by a Remotely Operated Vehicle five weeks after the food deployment. The samples provided empirical evidence for a quick response by sediment-inhabiting bacteria and metazoan meiofauna to the carcasses at both water depths. Compared to control sediments, the substantial pulse of organic matter also led to generally increased meiofauna/nematode densities around the artificial food-falls. The comparison of nematode communities in sediments affected by the carcasses with those in background control sediments exhibited shifts in the structural composition and the associated trophic and functional diversity of the nematode fauna. Our results confirmed that the impact of large food-falls on the deep benthic community largely depends on environmental factors (water depth, alternative food sources) as well as the background species composition, i.e., the structure of the prevailing meiofauna/nematode assemblages and the composition of the necrophagous community present in the wider area. |
format |
Dataset |
author |
Soltwedel, Thomas Guilini, Katja Sauter, Eberhard-Jürgen Schewe, Ingo Hasemann, Christiane |
author_facet |
Soltwedel, Thomas Guilini, Katja Sauter, Eberhard-Jürgen Schewe, Ingo Hasemann, Christiane |
author_sort |
Soltwedel, Thomas |
title |
Results from an in situ experiment at the deep-sea observatory HAUSGARTEN |
title_short |
Results from an in situ experiment at the deep-sea observatory HAUSGARTEN |
title_full |
Results from an in situ experiment at the deep-sea observatory HAUSGARTEN |
title_fullStr |
Results from an in situ experiment at the deep-sea observatory HAUSGARTEN |
title_full_unstemmed |
Results from an in situ experiment at the deep-sea observatory HAUSGARTEN |
title_sort |
results from an in situ experiment at the deep-sea observatory hausgarten |
publisher |
PANGAEA |
publishDate |
2017 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.873530 https://doi.org/10.1594/PANGAEA.873530 |
op_coverage |
MEDIAN LATITUDE: 79.096572 * MEDIAN LONGITUDE: 3.742311 * SOUTH-BOUND LATITUDE: 78.609800 * WEST-BOUND LONGITUDE: 2.842400 * NORTH-BOUND LATITUDE: 79.603800 * EAST-BOUND LONGITUDE: 6.092800 * DATE/TIME START: 2005-08-19T05:08:00 * DATE/TIME END: 2005-09-25T08:24:00 |
long_lat |
ENVELOPE(2.842400,6.092800,79.603800,78.609800) |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Arctic Fram Strait Svalbard |
genre_facet |
Arctic Arctic Fram Strait Svalbard |
op_source |
Supplement to: Soltwedel, Thomas; Guilini, Katja; Sauter, Eberhard-Jürgen; Schewe, Ingo; Hasemann, Christiane (2017): Local effects of large food-falls on nematode diversity at an arctic deep-sea site:Results from an in situ experiment at the deep-sea observatory HAUSGARTEN. Journal of Experimental Marine Biology and Ecology, https://doi.org/10.1016/j.jembe.2017.03.002 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.873530 https://doi.org/10.1594/PANGAEA.873530 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.873530 https://doi.org/10.1016/j.jembe.2017.03.002 |
_version_ |
1766299959367303168 |