The Zooplankton of Marguerite Bay, Western Antarctic Peninsula—Part II: Vertical Distributions and Habitat Partitioning
The vertical distribution patterns of the dominant zooplankton in the vicinity of Marguerite Bay on the west side of the Antarctic Peninsula were studied during austral fall of 2001 and 2002, using net and concurrent environmental data. Vertical distributions of zooplankton usually were similar to t...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
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Digital Commons @ University of South Florida
2011
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Online Access: | https://digitalcommons.usf.edu/msc_facpub/856 https://doi.org/10.1016/j.dsr2.2010.12.006 |
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ftusouthflorida:oai:digitalcommons.usf.edu:msc_facpub-1845 2023-07-30T03:57:18+02:00 The Zooplankton of Marguerite Bay, Western Antarctic Peninsula—Part II: Vertical Distributions and Habitat Partitioning Marrari, Marina Daly, Kendra L. Timonin, Alexander Semenova, Tatjana 2011-07-01T07:00:00Z https://digitalcommons.usf.edu/msc_facpub/856 https://doi.org/10.1016/j.dsr2.2010.12.006 unknown Digital Commons @ University of South Florida https://digitalcommons.usf.edu/msc_facpub/856 doi:10.1016/j.dsr2.2010.12.006 https://doi.org/10.1016/j.dsr2.2010.12.006 Marine Science Faculty Publications Antarctic krill Euphausia superba Thysanoessa macrura Euphausia crystallorophias Copepods Ostracods Pteropods Vertical distribution Life Sciences article 2011 ftusouthflorida https://doi.org/10.1016/j.dsr2.2010.12.006 2023-07-13T20:46:05Z The vertical distribution patterns of the dominant zooplankton in the vicinity of Marguerite Bay on the west side of the Antarctic Peninsula were studied during austral fall of 2001 and 2002, using net and concurrent environmental data. Vertical distributions of zooplankton usually were similar to those reported for other Antarctic regions. Maximum abundances of the copepods Ctenocalanus spp. and Calanus propinquus, the euphausiids Euphausia superba, Euphausia crystallorophias, and Thysanoessa macrura, and appendicularians primarily occurred in shallow Antarctic Surface Water (<100 >m) or the upper pycnocline. The copepod, Oncaea spp., mysids, and ostracods had the deepest distributions (>250 m), in warmer modified Circumpolar Deep Water. Other dominant copepods (Calanoides acutus, Metridia gerlachei, Oithona spp., Paraeuchaeta spp., and Rhincalanus gigas), pteropods, and chaetognaths had depths of maximum abundance within the pycnocline or in deeper warmer waters. Overlapping depth distributions suggest that E. superba would have the highest prey encounter rates with M. gerlachei, Ctenocalanus spp., C. propinquus, and Oithona spp. during fall, although most of the copepod community was deeper than the euphausiid community. Even though the three euphausiid species occupied similar depth ranges on average, at any given location E. superba, E. crystallorophias, and T. macrura depths of maximum abundance often did not overlap, suggesting vertical habitat partitioning behavior. The vertical patterns of copepods, euphausiids, amphipods, and mysids did not have a consistent association with the distributions of pigments, temperature, salinity, or density. Instead, the observed vertical distributions are mainly attributed to different behaviors, including seasonal vertical migration to deeper water for overwintering (i.e., C. acutus, R. gigas, ostracods, chaetognaths, pteropods) and vertical habitat partitioning to reduce competition (i.e., euphausiids). Migration into deep water and aggregation behavior ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Antarctic Peninsula Euphausia superba Thysanoessa macrura Copepods University of South Florida St. Petersburg: Digital USFSP Antarctic Antarctic Peninsula Austral Marguerite ENVELOPE(141.378,141.378,-66.787,-66.787) Marguerite Bay ENVELOPE(-68.000,-68.000,-68.500,-68.500) The Antarctic Deep Sea Research Part II: Topical Studies in Oceanography 58 13-16 1614 1629 |
institution |
Open Polar |
collection |
University of South Florida St. Petersburg: Digital USFSP |
op_collection_id |
ftusouthflorida |
language |
unknown |
topic |
Antarctic krill Euphausia superba Thysanoessa macrura Euphausia crystallorophias Copepods Ostracods Pteropods Vertical distribution Life Sciences |
spellingShingle |
Antarctic krill Euphausia superba Thysanoessa macrura Euphausia crystallorophias Copepods Ostracods Pteropods Vertical distribution Life Sciences Marrari, Marina Daly, Kendra L. Timonin, Alexander Semenova, Tatjana The Zooplankton of Marguerite Bay, Western Antarctic Peninsula—Part II: Vertical Distributions and Habitat Partitioning |
topic_facet |
Antarctic krill Euphausia superba Thysanoessa macrura Euphausia crystallorophias Copepods Ostracods Pteropods Vertical distribution Life Sciences |
description |
The vertical distribution patterns of the dominant zooplankton in the vicinity of Marguerite Bay on the west side of the Antarctic Peninsula were studied during austral fall of 2001 and 2002, using net and concurrent environmental data. Vertical distributions of zooplankton usually were similar to those reported for other Antarctic regions. Maximum abundances of the copepods Ctenocalanus spp. and Calanus propinquus, the euphausiids Euphausia superba, Euphausia crystallorophias, and Thysanoessa macrura, and appendicularians primarily occurred in shallow Antarctic Surface Water (<100 >m) or the upper pycnocline. The copepod, Oncaea spp., mysids, and ostracods had the deepest distributions (>250 m), in warmer modified Circumpolar Deep Water. Other dominant copepods (Calanoides acutus, Metridia gerlachei, Oithona spp., Paraeuchaeta spp., and Rhincalanus gigas), pteropods, and chaetognaths had depths of maximum abundance within the pycnocline or in deeper warmer waters. Overlapping depth distributions suggest that E. superba would have the highest prey encounter rates with M. gerlachei, Ctenocalanus spp., C. propinquus, and Oithona spp. during fall, although most of the copepod community was deeper than the euphausiid community. Even though the three euphausiid species occupied similar depth ranges on average, at any given location E. superba, E. crystallorophias, and T. macrura depths of maximum abundance often did not overlap, suggesting vertical habitat partitioning behavior. The vertical patterns of copepods, euphausiids, amphipods, and mysids did not have a consistent association with the distributions of pigments, temperature, salinity, or density. Instead, the observed vertical distributions are mainly attributed to different behaviors, including seasonal vertical migration to deeper water for overwintering (i.e., C. acutus, R. gigas, ostracods, chaetognaths, pteropods) and vertical habitat partitioning to reduce competition (i.e., euphausiids). Migration into deep water and aggregation behavior ... |
format |
Article in Journal/Newspaper |
author |
Marrari, Marina Daly, Kendra L. Timonin, Alexander Semenova, Tatjana |
author_facet |
Marrari, Marina Daly, Kendra L. Timonin, Alexander Semenova, Tatjana |
author_sort |
Marrari, Marina |
title |
The Zooplankton of Marguerite Bay, Western Antarctic Peninsula—Part II: Vertical Distributions and Habitat Partitioning |
title_short |
The Zooplankton of Marguerite Bay, Western Antarctic Peninsula—Part II: Vertical Distributions and Habitat Partitioning |
title_full |
The Zooplankton of Marguerite Bay, Western Antarctic Peninsula—Part II: Vertical Distributions and Habitat Partitioning |
title_fullStr |
The Zooplankton of Marguerite Bay, Western Antarctic Peninsula—Part II: Vertical Distributions and Habitat Partitioning |
title_full_unstemmed |
The Zooplankton of Marguerite Bay, Western Antarctic Peninsula—Part II: Vertical Distributions and Habitat Partitioning |
title_sort |
zooplankton of marguerite bay, western antarctic peninsula—part ii: vertical distributions and habitat partitioning |
publisher |
Digital Commons @ University of South Florida |
publishDate |
2011 |
url |
https://digitalcommons.usf.edu/msc_facpub/856 https://doi.org/10.1016/j.dsr2.2010.12.006 |
long_lat |
ENVELOPE(141.378,141.378,-66.787,-66.787) ENVELOPE(-68.000,-68.000,-68.500,-68.500) |
geographic |
Antarctic Antarctic Peninsula Austral Marguerite Marguerite Bay The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Austral Marguerite Marguerite Bay The Antarctic |
genre |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Euphausia superba Thysanoessa macrura Copepods |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Euphausia superba Thysanoessa macrura Copepods |
op_source |
Marine Science Faculty Publications |
op_relation |
https://digitalcommons.usf.edu/msc_facpub/856 doi:10.1016/j.dsr2.2010.12.006 https://doi.org/10.1016/j.dsr2.2010.12.006 |
op_doi |
https://doi.org/10.1016/j.dsr2.2010.12.006 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
58 |
container_issue |
13-16 |
container_start_page |
1614 |
op_container_end_page |
1629 |
_version_ |
1772816747065245696 |