Density and biomass of two copepod size fractions and various species obtained during Almirante Irizar cruises to the Drake Passage and Scotia Sea (2000-2003)
The relative importance of small forms of copepods has been historically underestimated by the traditional use of 200-300-µm mesh nets. This work quantified the distribution and abundance of copepods, considering two size fractions (<300 µm and >300 µm), in superficial waters (9 m deep) of the...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.839142 2024-09-15T17:40:19+00:00 Density and biomass of two copepod size fractions and various species obtained during Almirante Irizar cruises to the Drake Passage and Scotia Sea (2000-2003) Thompson, Gustavo A Dinofrio, Estela O Alder, Viviana A MEDIAN LATITUDE: -58.500000 * MEDIAN LONGITUDE: -54.000000 * SOUTH-BOUND LATITUDE: -59.000000 * WEST-BOUND LONGITUDE: -62.000000 * NORTH-BOUND LATITUDE: -58.000000 * EAST-BOUND LONGITUDE: -46.000000 2012 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.839142 https://doi.org/10.1594/PANGAEA.839142 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.839142 https://doi.org/10.1594/PANGAEA.839142 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Thompson, Gustavo A; Dinofrio, Estela O; Alder, Viviana A (2011): Interannual fluctuations in copepod abundance and contribution of small forms in the Drake Passage during austral summer. Helgoland Marine Research, 66(2), 127-138, https://doi.org/10.1007/s10152-011-0253-4 DrakeP-ScotiaS International Polar Year (2007-2008) IPY Southern Ocean dataset publication series 2012 ftpangaea https://doi.org/10.1594/PANGAEA.83914210.1007/s10152-011-0253-4 2024-07-24T02:31:21Z The relative importance of small forms of copepods has been historically underestimated by the traditional use of 200-300-µm mesh nets. This work quantified the distribution and abundance of copepods, considering two size fractions (<300 µm and >300 µm), in superficial waters (9 m deep) of the Drake Passage and contributed to the knowledge of their interannual fluctuations among three summers. Four types of nauplii and eleven species of copepods at copepodite and adult stages were identified, with abundance values of up to 13 ind/L and 28,300 µg C/m**3. The <300-µm fraction, composed of Oithona similis, small cyclopoids and nauplii, dominated the copepod communities in the 3 years; it accounted for more than 77% of the total number and for between 40 and 63% of the total biomass. Changes in density and biomass values among the three cruises differed according to copepod size fraction and water mass; the >300-µm fraction showed no changes among the 3 years, both in Antarctic (density and biomass) and in Subantarctic waters (density), whereas the <300-µm fraction showed higher (density and biomass) values in 2001 both in Subantarctic and in Antarctic waters. Sea surface temperature and its anomaly accounted for the largest proportion of variability in copepod density and biomass, particularly for the <300-µm fraction. Other/Unknown Material Antarc* Antarctic Drake Passage International Polar Year IPY Scotia Sea Southern Ocean Copepods PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-62.000000,-46.000000,-58.000000,-59.000000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
DrakeP-ScotiaS International Polar Year (2007-2008) IPY Southern Ocean |
spellingShingle |
DrakeP-ScotiaS International Polar Year (2007-2008) IPY Southern Ocean Thompson, Gustavo A Dinofrio, Estela O Alder, Viviana A Density and biomass of two copepod size fractions and various species obtained during Almirante Irizar cruises to the Drake Passage and Scotia Sea (2000-2003) |
topic_facet |
DrakeP-ScotiaS International Polar Year (2007-2008) IPY Southern Ocean |
description |
The relative importance of small forms of copepods has been historically underestimated by the traditional use of 200-300-µm mesh nets. This work quantified the distribution and abundance of copepods, considering two size fractions (<300 µm and >300 µm), in superficial waters (9 m deep) of the Drake Passage and contributed to the knowledge of their interannual fluctuations among three summers. Four types of nauplii and eleven species of copepods at copepodite and adult stages were identified, with abundance values of up to 13 ind/L and 28,300 µg C/m**3. The <300-µm fraction, composed of Oithona similis, small cyclopoids and nauplii, dominated the copepod communities in the 3 years; it accounted for more than 77% of the total number and for between 40 and 63% of the total biomass. Changes in density and biomass values among the three cruises differed according to copepod size fraction and water mass; the >300-µm fraction showed no changes among the 3 years, both in Antarctic (density and biomass) and in Subantarctic waters (density), whereas the <300-µm fraction showed higher (density and biomass) values in 2001 both in Subantarctic and in Antarctic waters. Sea surface temperature and its anomaly accounted for the largest proportion of variability in copepod density and biomass, particularly for the <300-µm fraction. |
format |
Other/Unknown Material |
author |
Thompson, Gustavo A Dinofrio, Estela O Alder, Viviana A |
author_facet |
Thompson, Gustavo A Dinofrio, Estela O Alder, Viviana A |
author_sort |
Thompson, Gustavo A |
title |
Density and biomass of two copepod size fractions and various species obtained during Almirante Irizar cruises to the Drake Passage and Scotia Sea (2000-2003) |
title_short |
Density and biomass of two copepod size fractions and various species obtained during Almirante Irizar cruises to the Drake Passage and Scotia Sea (2000-2003) |
title_full |
Density and biomass of two copepod size fractions and various species obtained during Almirante Irizar cruises to the Drake Passage and Scotia Sea (2000-2003) |
title_fullStr |
Density and biomass of two copepod size fractions and various species obtained during Almirante Irizar cruises to the Drake Passage and Scotia Sea (2000-2003) |
title_full_unstemmed |
Density and biomass of two copepod size fractions and various species obtained during Almirante Irizar cruises to the Drake Passage and Scotia Sea (2000-2003) |
title_sort |
density and biomass of two copepod size fractions and various species obtained during almirante irizar cruises to the drake passage and scotia sea (2000-2003) |
publisher |
PANGAEA |
publishDate |
2012 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.839142 https://doi.org/10.1594/PANGAEA.839142 |
op_coverage |
MEDIAN LATITUDE: -58.500000 * MEDIAN LONGITUDE: -54.000000 * SOUTH-BOUND LATITUDE: -59.000000 * WEST-BOUND LONGITUDE: -62.000000 * NORTH-BOUND LATITUDE: -58.000000 * EAST-BOUND LONGITUDE: -46.000000 |
long_lat |
ENVELOPE(-62.000000,-46.000000,-58.000000,-59.000000) |
genre |
Antarc* Antarctic Drake Passage International Polar Year IPY Scotia Sea Southern Ocean Copepods |
genre_facet |
Antarc* Antarctic Drake Passage International Polar Year IPY Scotia Sea Southern Ocean Copepods |
op_source |
Supplement to: Thompson, Gustavo A; Dinofrio, Estela O; Alder, Viviana A (2011): Interannual fluctuations in copepod abundance and contribution of small forms in the Drake Passage during austral summer. Helgoland Marine Research, 66(2), 127-138, https://doi.org/10.1007/s10152-011-0253-4 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.839142 https://doi.org/10.1594/PANGAEA.839142 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.83914210.1007/s10152-011-0253-4 |
_version_ |
1810486326876700672 |