Table_2_Food falls in the deep northwestern Weddell Sea.xlsx
When pelagic organisms die and fall onto the deep-sea floor they create food falls, i.e., parcels of organic enrichment that subsidize deep benthic scavenging communities. The diversity and quantities of food falls remain unstudied for many ocean regions since they are stochastically deposited and r...
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ftfrontimediafig:oai:figshare.com:article/21570816 2023-05-15T13:58:18+02:00 Table_2_Food falls in the deep northwestern Weddell Sea.xlsx Julian B. Stauffer Autun Purser Huw J. Griffiths Craig R. Smith Henk-Jan T. Hoving 2022-11-17T05:21:37Z https://doi.org/10.3389/fmars.2022.1055318.s002 https://figshare.com/articles/dataset/Table_2_Food_falls_in_the_deep_northwestern_Weddell_Sea_xlsx/21570816 unknown doi:10.3389/fmars.2022.1055318.s002 https://figshare.com/articles/dataset/Table_2_Food_falls_in_the_deep_northwestern_Weddell_Sea_xlsx/21570816 CC BY 4.0 CC-BY Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering scavenging penguin Antarctic Peninsula Powell Basin OFOBS fisheries discards carbon pump baleen whale Dataset 2022 ftfrontimediafig https://doi.org/10.3389/fmars.2022.1055318.s002 2022-11-24T00:11:49Z When pelagic organisms die and fall onto the deep-sea floor they create food falls, i.e., parcels of organic enrichment that subsidize deep benthic scavenging communities. The diversity and quantities of food falls remain unstudied for many ocean regions since they are stochastically deposited and rapidly scavenged. The Southern Ocean habitat supports large populations of megafauna but few food falls have been documented. To investigate the diversity and quantity of food falls in the northwestern Weddell Sea, we analyzed 8476 images from the deep seafloor that were captured during the expedition PS118 on RV Polarstern in 2019 by the camera system OFOBS (Ocean Floor Observation and Bathymetry System). OFOBS was towed 1.5 m above the seafloor along five transects (400 to 2200 m seafloor depth) east of the Antarctic Peninsula. We observed the carcasses of one baleen whale, one penguin, and four fish at depths of 647 m, 613 m, 647 m, 2136 m, 2165 m, and 2112 m, respectively, as well as associated scavenging fauna. To the best of our knowledge, we describe here the first in situ observations of deep-sea food falls for penguins and fish in the Southern Ocean. While the whale carcass seemed in an intermediate successional stage, both the penguin and the fish were likely recently deposited and three of the fish potentially resulted from fishery discards. Our relatively small data set suggests that a diverse array of food falls provide nutrients to the slopes of the Powell Basin. Dataset Antarc* Antarctic Antarctic Peninsula baleen whale Southern Ocean Weddell Sea Frontiers: Figshare Antarctic Antarctic Peninsula Powell Basin ENVELOPE(-49.500,-49.500,-62.250,-62.250) Southern Ocean The Antarctic Weddell Weddell Sea |
institution |
Open Polar |
collection |
Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering scavenging penguin Antarctic Peninsula Powell Basin OFOBS fisheries discards carbon pump baleen whale |
spellingShingle |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering scavenging penguin Antarctic Peninsula Powell Basin OFOBS fisheries discards carbon pump baleen whale Julian B. Stauffer Autun Purser Huw J. Griffiths Craig R. Smith Henk-Jan T. Hoving Table_2_Food falls in the deep northwestern Weddell Sea.xlsx |
topic_facet |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering scavenging penguin Antarctic Peninsula Powell Basin OFOBS fisheries discards carbon pump baleen whale |
description |
When pelagic organisms die and fall onto the deep-sea floor they create food falls, i.e., parcels of organic enrichment that subsidize deep benthic scavenging communities. The diversity and quantities of food falls remain unstudied for many ocean regions since they are stochastically deposited and rapidly scavenged. The Southern Ocean habitat supports large populations of megafauna but few food falls have been documented. To investigate the diversity and quantity of food falls in the northwestern Weddell Sea, we analyzed 8476 images from the deep seafloor that were captured during the expedition PS118 on RV Polarstern in 2019 by the camera system OFOBS (Ocean Floor Observation and Bathymetry System). OFOBS was towed 1.5 m above the seafloor along five transects (400 to 2200 m seafloor depth) east of the Antarctic Peninsula. We observed the carcasses of one baleen whale, one penguin, and four fish at depths of 647 m, 613 m, 647 m, 2136 m, 2165 m, and 2112 m, respectively, as well as associated scavenging fauna. To the best of our knowledge, we describe here the first in situ observations of deep-sea food falls for penguins and fish in the Southern Ocean. While the whale carcass seemed in an intermediate successional stage, both the penguin and the fish were likely recently deposited and three of the fish potentially resulted from fishery discards. Our relatively small data set suggests that a diverse array of food falls provide nutrients to the slopes of the Powell Basin. |
format |
Dataset |
author |
Julian B. Stauffer Autun Purser Huw J. Griffiths Craig R. Smith Henk-Jan T. Hoving |
author_facet |
Julian B. Stauffer Autun Purser Huw J. Griffiths Craig R. Smith Henk-Jan T. Hoving |
author_sort |
Julian B. Stauffer |
title |
Table_2_Food falls in the deep northwestern Weddell Sea.xlsx |
title_short |
Table_2_Food falls in the deep northwestern Weddell Sea.xlsx |
title_full |
Table_2_Food falls in the deep northwestern Weddell Sea.xlsx |
title_fullStr |
Table_2_Food falls in the deep northwestern Weddell Sea.xlsx |
title_full_unstemmed |
Table_2_Food falls in the deep northwestern Weddell Sea.xlsx |
title_sort |
table_2_food falls in the deep northwestern weddell sea.xlsx |
publishDate |
2022 |
url |
https://doi.org/10.3389/fmars.2022.1055318.s002 https://figshare.com/articles/dataset/Table_2_Food_falls_in_the_deep_northwestern_Weddell_Sea_xlsx/21570816 |
long_lat |
ENVELOPE(-49.500,-49.500,-62.250,-62.250) |
geographic |
Antarctic Antarctic Peninsula Powell Basin Southern Ocean The Antarctic Weddell Weddell Sea |
geographic_facet |
Antarctic Antarctic Peninsula Powell Basin Southern Ocean The Antarctic Weddell Weddell Sea |
genre |
Antarc* Antarctic Antarctic Peninsula baleen whale Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula baleen whale Southern Ocean Weddell Sea |
op_relation |
doi:10.3389/fmars.2022.1055318.s002 https://figshare.com/articles/dataset/Table_2_Food_falls_in_the_deep_northwestern_Weddell_Sea_xlsx/21570816 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmars.2022.1055318.s002 |
_version_ |
1766266540617891840 |