Chaetoceros resting spores in Quaternary sediments of ODP Leg 119 sites
During Leg 119 of the Ocean Drilling Program (ODP), Quaternary sediments of the Southern Ocean were examined for the presence and abundance of Chaetoceros resting spores. Six drill sites were occupied along the Kerguelen Plateau. An additional five drill sites were clustered within Prydz Bay, Antarc...
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1991
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.728517 2023-05-15T13:42:09+02:00 Chaetoceros resting spores in Quaternary sediments of ODP Leg 119 sites Stockwell, Dean A MEDIAN LATITUDE: -63.223714 * MEDIAN LONGITUDE: 77.380843 * SOUTH-BOUND LATITUDE: -68.764000 * WEST-BOUND LONGITUDE: 71.661500 * NORTH-BOUND LATITUDE: -49.403000 * EAST-BOUND LONGITUDE: 85.854200 * DATE/TIME START: 1987-12-26T02:30:00 * DATE/TIME END: 1988-02-10T17:15:00 1991-10-13 application/zip, 7 datasets https://doi.pangaea.de/10.1594/PANGAEA.728517 https://doi.org/10.1594/PANGAEA.728517 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.728517 https://doi.org/10.1594/PANGAEA.728517 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Stockwell, Dean A (1991): Distribution of Chaetoceros resting spores in the Quaternary sediments from Leg 119. In: Barron, J; Larsen, B; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 119, 599-610, https://doi.org/10.2973/odp.proc.sr.119.156.1991 119-736A 119-736B 119-739C 119-740A 119-740B 119-741A 119-742A 119-744A 119-744B 119-745A 119-745B DRILL Drilling/drill rig Indian Ocean Joides Resolution Leg119 Ocean Drilling Program ODP Prydz Bay South Indian Ridge South Indian Ocean Dataset 1991 ftpangaea https://doi.org/10.1594/PANGAEA.728517 https://doi.org/10.2973/odp.proc.sr.119.156.1991 2023-01-20T07:31:33Z During Leg 119 of the Ocean Drilling Program (ODP), Quaternary sediments of the Southern Ocean were examined for the presence and abundance of Chaetoceros resting spores. Six drill sites were occupied along the Kerguelen Plateau. An additional five drill sites were clustered within Prydz Bay, Antarctica. Chaetoceros resting spores were present at all sites examined. These resting spore assemblages were comprised primarily of Chaetoceros neglectus and several unidentified Chaetoceros species. Resting spore assemblages accounted for approximately 20% of the total diatom assemblage (ranging from 0% to 91.4% of any given sample). Quantitative estimates of resting spores demonstrated considerable downcore abundance fluctuations, ranging from 0 to 1.82*10*9 valves/g sediment. The highest spore production rates (3.75*10**12 spores/cm/yr) were found on the northern Kerguelen Plateau (Sample 119-736B-1H-3,35-37 cm). A lack of adequate chronological control at all sites prevented proper between-core comparisons. Mean resting spore abundance, however, appeared highest within the sediments of Prydz Bay and across the northern Kerguelen Plateau. Deep-water stations of the southern Kerguelen Plateau demonstrated the lower spore abundances and a reduction in the percentage contribution of spore to the total diatom assemblage. Dataset Antarc* Antarctica Prydz Bay Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science Southern Ocean Kerguelen Prydz Bay Indian ENVELOPE(71.661500,85.854200,-49.403000,-68.764000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
119-736A 119-736B 119-739C 119-740A 119-740B 119-741A 119-742A 119-744A 119-744B 119-745A 119-745B DRILL Drilling/drill rig Indian Ocean Joides Resolution Leg119 Ocean Drilling Program ODP Prydz Bay South Indian Ridge South Indian Ocean |
spellingShingle |
119-736A 119-736B 119-739C 119-740A 119-740B 119-741A 119-742A 119-744A 119-744B 119-745A 119-745B DRILL Drilling/drill rig Indian Ocean Joides Resolution Leg119 Ocean Drilling Program ODP Prydz Bay South Indian Ridge South Indian Ocean Stockwell, Dean A Chaetoceros resting spores in Quaternary sediments of ODP Leg 119 sites |
topic_facet |
119-736A 119-736B 119-739C 119-740A 119-740B 119-741A 119-742A 119-744A 119-744B 119-745A 119-745B DRILL Drilling/drill rig Indian Ocean Joides Resolution Leg119 Ocean Drilling Program ODP Prydz Bay South Indian Ridge South Indian Ocean |
description |
During Leg 119 of the Ocean Drilling Program (ODP), Quaternary sediments of the Southern Ocean were examined for the presence and abundance of Chaetoceros resting spores. Six drill sites were occupied along the Kerguelen Plateau. An additional five drill sites were clustered within Prydz Bay, Antarctica. Chaetoceros resting spores were present at all sites examined. These resting spore assemblages were comprised primarily of Chaetoceros neglectus and several unidentified Chaetoceros species. Resting spore assemblages accounted for approximately 20% of the total diatom assemblage (ranging from 0% to 91.4% of any given sample). Quantitative estimates of resting spores demonstrated considerable downcore abundance fluctuations, ranging from 0 to 1.82*10*9 valves/g sediment. The highest spore production rates (3.75*10**12 spores/cm/yr) were found on the northern Kerguelen Plateau (Sample 119-736B-1H-3,35-37 cm). A lack of adequate chronological control at all sites prevented proper between-core comparisons. Mean resting spore abundance, however, appeared highest within the sediments of Prydz Bay and across the northern Kerguelen Plateau. Deep-water stations of the southern Kerguelen Plateau demonstrated the lower spore abundances and a reduction in the percentage contribution of spore to the total diatom assemblage. |
format |
Dataset |
author |
Stockwell, Dean A |
author_facet |
Stockwell, Dean A |
author_sort |
Stockwell, Dean A |
title |
Chaetoceros resting spores in Quaternary sediments of ODP Leg 119 sites |
title_short |
Chaetoceros resting spores in Quaternary sediments of ODP Leg 119 sites |
title_full |
Chaetoceros resting spores in Quaternary sediments of ODP Leg 119 sites |
title_fullStr |
Chaetoceros resting spores in Quaternary sediments of ODP Leg 119 sites |
title_full_unstemmed |
Chaetoceros resting spores in Quaternary sediments of ODP Leg 119 sites |
title_sort |
chaetoceros resting spores in quaternary sediments of odp leg 119 sites |
publisher |
PANGAEA |
publishDate |
1991 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.728517 https://doi.org/10.1594/PANGAEA.728517 |
op_coverage |
MEDIAN LATITUDE: -63.223714 * MEDIAN LONGITUDE: 77.380843 * SOUTH-BOUND LATITUDE: -68.764000 * WEST-BOUND LONGITUDE: 71.661500 * NORTH-BOUND LATITUDE: -49.403000 * EAST-BOUND LONGITUDE: 85.854200 * DATE/TIME START: 1987-12-26T02:30:00 * DATE/TIME END: 1988-02-10T17:15:00 |
long_lat |
ENVELOPE(71.661500,85.854200,-49.403000,-68.764000) |
geographic |
Southern Ocean Kerguelen Prydz Bay Indian |
geographic_facet |
Southern Ocean Kerguelen Prydz Bay Indian |
genre |
Antarc* Antarctica Prydz Bay Southern Ocean |
genre_facet |
Antarc* Antarctica Prydz Bay Southern Ocean |
op_source |
Supplement to: Stockwell, Dean A (1991): Distribution of Chaetoceros resting spores in the Quaternary sediments from Leg 119. In: Barron, J; Larsen, B; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 119, 599-610, https://doi.org/10.2973/odp.proc.sr.119.156.1991 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.728517 https://doi.org/10.1594/PANGAEA.728517 |
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.728517 https://doi.org/10.2973/odp.proc.sr.119.156.1991 |
_version_ |
1766163596525436928 |