ZOOPL.ANKTON STANDING CROP IN THE ARCTIC BASIN1
An estimate of zooplankton standing crop in the central Arctic Ocean was obtained from 118 closing-net samples collected from Ice Islands T-3 and ARLIS II. The T-3 samples were taken from the anticyclonic gyre in the Amerasia Basin north of Alaska; the ARLIS II samples were collected from the Eurasi...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.500.8472 2023-05-15T14:29:18+02:00 ZOOPL.ANKTON STANDING CROP IN THE ARCTIC BASIN1 Thomus L. Hopkins The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.500.8472 http://www.aslo.org/lo/toc/vol_14/issue_1/0080.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.500.8472 http://www.aslo.org/lo/toc/vol_14/issue_1/0080.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.aslo.org/lo/toc/vol_14/issue_1/0080.pdf text ftciteseerx 2016-01-08T09:07:44Z An estimate of zooplankton standing crop in the central Arctic Ocean was obtained from 118 closing-net samples collected from Ice Islands T-3 and ARLIS II. The T-3 samples were taken from the anticyclonic gyre in the Amerasia Basin north of Alaska; the ARLIS II samples were collected from the Eurasia Basin north of Greenland. Copepods were the most important group, constituting over 80 % of the biomass. The most important genus was Calanus, which averaged half the biomass in the upper 1,500 m. Below 1,500 m the relative importance of Calanus dcclincd. Copepods were also the most numerous (90 % ) metazoan plankters, though they were outnumbered by small radio-larians in the upper 100 m from July to early Septcmbcr. There was some cvidcncc of a summer (July-August) increase in biomass in 0-100-m samples from T-3 and an increase in ARLIS II 0-100-m samples from March to January as ARLIS II drifted towards Greenland. Average biomass concentrations for the three principal water masses of the Axtic Ocean were 0.62 mg clry wt/m ” for the Arctic surface layer (O-200 m), 0.14 mg/m ” for the Atlantic layer (200-900 m), and 0.04 mg/m ” for the Arctic deep-water mass (>900 m). Total zooplankton biomass in the central Arctic was estimated at l-2 x 10 ” metric tons (dry weight). Calculations basccl on available primary production data suggest that photosynthesis alone cannot meet the metabolic demands of the biomass of zooplankton in the central Arctic Basin. INTHODUCTION Plankton investigations in the Arctic Ocean have been primarily concerned with plankton systcmatics; we now have an extensive knowledge oE the species com-position of phytoplankton (Gran 1904; Text Arctic Basin Arctic Arctic Ocean Greenland Phytoplankton Zooplankton Alaska Copepods Unknown Amerasia Basin ENVELOPE(-170.000,-170.000,80.000,80.000) Arctic Arctic Ocean Eurasia Basin ENVELOPE(80.000,80.000,87.000,87.000) Greenland |
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Open Polar |
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Unknown |
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ftciteseerx |
language |
English |
description |
An estimate of zooplankton standing crop in the central Arctic Ocean was obtained from 118 closing-net samples collected from Ice Islands T-3 and ARLIS II. The T-3 samples were taken from the anticyclonic gyre in the Amerasia Basin north of Alaska; the ARLIS II samples were collected from the Eurasia Basin north of Greenland. Copepods were the most important group, constituting over 80 % of the biomass. The most important genus was Calanus, which averaged half the biomass in the upper 1,500 m. Below 1,500 m the relative importance of Calanus dcclincd. Copepods were also the most numerous (90 % ) metazoan plankters, though they were outnumbered by small radio-larians in the upper 100 m from July to early Septcmbcr. There was some cvidcncc of a summer (July-August) increase in biomass in 0-100-m samples from T-3 and an increase in ARLIS II 0-100-m samples from March to January as ARLIS II drifted towards Greenland. Average biomass concentrations for the three principal water masses of the Axtic Ocean were 0.62 mg clry wt/m ” for the Arctic surface layer (O-200 m), 0.14 mg/m ” for the Atlantic layer (200-900 m), and 0.04 mg/m ” for the Arctic deep-water mass (>900 m). Total zooplankton biomass in the central Arctic was estimated at l-2 x 10 ” metric tons (dry weight). Calculations basccl on available primary production data suggest that photosynthesis alone cannot meet the metabolic demands of the biomass of zooplankton in the central Arctic Basin. INTHODUCTION Plankton investigations in the Arctic Ocean have been primarily concerned with plankton systcmatics; we now have an extensive knowledge oE the species com-position of phytoplankton (Gran 1904; |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Thomus L. Hopkins |
spellingShingle |
Thomus L. Hopkins ZOOPL.ANKTON STANDING CROP IN THE ARCTIC BASIN1 |
author_facet |
Thomus L. Hopkins |
author_sort |
Thomus L. Hopkins |
title |
ZOOPL.ANKTON STANDING CROP IN THE ARCTIC BASIN1 |
title_short |
ZOOPL.ANKTON STANDING CROP IN THE ARCTIC BASIN1 |
title_full |
ZOOPL.ANKTON STANDING CROP IN THE ARCTIC BASIN1 |
title_fullStr |
ZOOPL.ANKTON STANDING CROP IN THE ARCTIC BASIN1 |
title_full_unstemmed |
ZOOPL.ANKTON STANDING CROP IN THE ARCTIC BASIN1 |
title_sort |
zoopl.ankton standing crop in the arctic basin1 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.500.8472 http://www.aslo.org/lo/toc/vol_14/issue_1/0080.pdf |
long_lat |
ENVELOPE(-170.000,-170.000,80.000,80.000) ENVELOPE(80.000,80.000,87.000,87.000) |
geographic |
Amerasia Basin Arctic Arctic Ocean Eurasia Basin Greenland |
geographic_facet |
Amerasia Basin Arctic Arctic Ocean Eurasia Basin Greenland |
genre |
Arctic Basin Arctic Arctic Ocean Greenland Phytoplankton Zooplankton Alaska Copepods |
genre_facet |
Arctic Basin Arctic Arctic Ocean Greenland Phytoplankton Zooplankton Alaska Copepods |
op_source |
http://www.aslo.org/lo/toc/vol_14/issue_1/0080.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.500.8472 http://www.aslo.org/lo/toc/vol_14/issue_1/0080.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766303352999641088 |