Phytoplankton growth and microzooplankton grazing in the subarctic Pacific Ocean and the Bering Sea during summer 1999
Phytoplankton growth and microzooplankton grazing rates were measured by the dilution technique in the subarctic North Pacific Ocean along a west-east transect during summer 1999. Average phytoplankton growth rates without added nutrients (μ0) were 0.33, 0.41, 0.20 and 0.49 d-1 for the four regions...
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ftunivsthongkong:oai:repository.ust.hk:1783.1-43063 2023-05-15T15:43:16+02:00 Phytoplankton growth and microzooplankton grazing in the subarctic Pacific Ocean and the Bering Sea during summer 1999 Liu, Hongbin Suzuki, Koji Saino, Toshiro 2002 http://repository.ust.hk/ir/Record/1783.1-43063 https://doi.org/10.1016/S0967-0637(01)00056-5 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=09670637&rft.volume=49&rft.issue=2&rft.date=2002&rft.spage=363&rft.aulast=Liu&rft.aufirst=Hongbin%7C&rft.atitle=Phytoplankton%20growth%20and%20microzooplankton%20grazing%20in%20the%20subarctic%20Pacific%20Ocean%20and%20the%20Bering%20Sea%20during%20summer%201999&rft.title=Deep-Sea%20Research%20Part%20I%3A%20Oceanographic%20Research%20Papers http://www.scopus.com/record/display.url?eid=2-s2.0-0036162512&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000173568900008 English eng http://repository.ust.hk/ir/Record/1783.1-43063 Deep-Sea Research Part I: Oceanographic Research Papers, v. 49, (2), 2002, p. 363-375 0967-0637 https://doi.org/10.1016/S0967-0637(01)00056-5 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=09670637&rft.volume=49&rft.issue=2&rft.date=2002&rft.spage=363&rft.aulast=Liu&rft.aufirst=Hongbin%7C&rft.atitle=Phytoplankton%20growth%20and%20microzooplankton%20grazing%20in%20the%20subarctic%20Pacific%20Ocean%20and%20the%20Bering%20Sea%20during%20summer%201999&rft.title=Deep-Sea%20Research%20Part%20I%3A%20Oceanographic%20Research%20Papers http://www.scopus.com/record/display.url?eid=2-s2.0-0036162512&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000173568900008 Bering Sea Microzooplankton grazing Phytoplankton growth Picoplankton Subarctic North Pacific Trophic dynamics Article 2002 ftunivsthongkong https://doi.org/10.1016/S0967-0637(01)00056-5 2021-04-30T00:02:28Z Phytoplankton growth and microzooplankton grazing rates were measured by the dilution technique in the subarctic North Pacific Ocean along a west-east transect during summer 1999. Average phytoplankton growth rates without added nutrients (μ0) were 0.33, 0.41, 0.20 and 0.49 d-1 for the four regions sampled: the Western Gyre, the Bering Sea, the Gulf of Alaska gyre and stations along the Aleutian Trench. Average grazing mortality rates (m) were 0.34, 0.27, 0.20 and 0.49 d-1. Limitation of phytoplankton growth by macronutrients, such as NO3 and SiO2, was identified only at a few stations, with overall μ0/μn (μn is nutrient-enhanced growth rate) averaging 0.9. Phytoplankton growth and microzooplankton grazing were approximately balanced, as indicated by high m/μ0 ratio, except in the Bering Sea, where the m/μ0 ratio was 0.65, indicating the relative importance of the diatom-macrozooplankton grazing food chain and possible higher export flux to the deep layer. Flow cytometric analysis revealed that the growth rates of picoplankton (Synechococcus and picoeukaryotes) were usually much lower than the total phytoplankton community growth rates estimated from chlorophyll a, except for stations in the Gulf of Alaska Gyre, where the growth rates for different populations were about the same. Lower than community-average growth rate for picoplankton indicates larger phytoplankters, presumably diatoms, were growing at a much faster rate. Suppressed phytoplankton growth in the Gulf of Alaska was probably a result of iron limitation. © 2002 Elsevier Science Ltd. All rights reserved. Article in Journal/Newspaper Bering Sea Subarctic Alaska The Hong Kong University of Science and Technology: HKUST Institutional Repository Bering Sea Gulf of Alaska Pacific Deep Sea Research Part I: Oceanographic Research Papers 49 2 363 375 |
institution |
Open Polar |
collection |
The Hong Kong University of Science and Technology: HKUST Institutional Repository |
op_collection_id |
ftunivsthongkong |
language |
English |
topic |
Bering Sea Microzooplankton grazing Phytoplankton growth Picoplankton Subarctic North Pacific Trophic dynamics |
spellingShingle |
Bering Sea Microzooplankton grazing Phytoplankton growth Picoplankton Subarctic North Pacific Trophic dynamics Liu, Hongbin Suzuki, Koji Saino, Toshiro Phytoplankton growth and microzooplankton grazing in the subarctic Pacific Ocean and the Bering Sea during summer 1999 |
topic_facet |
Bering Sea Microzooplankton grazing Phytoplankton growth Picoplankton Subarctic North Pacific Trophic dynamics |
description |
Phytoplankton growth and microzooplankton grazing rates were measured by the dilution technique in the subarctic North Pacific Ocean along a west-east transect during summer 1999. Average phytoplankton growth rates without added nutrients (μ0) were 0.33, 0.41, 0.20 and 0.49 d-1 for the four regions sampled: the Western Gyre, the Bering Sea, the Gulf of Alaska gyre and stations along the Aleutian Trench. Average grazing mortality rates (m) were 0.34, 0.27, 0.20 and 0.49 d-1. Limitation of phytoplankton growth by macronutrients, such as NO3 and SiO2, was identified only at a few stations, with overall μ0/μn (μn is nutrient-enhanced growth rate) averaging 0.9. Phytoplankton growth and microzooplankton grazing were approximately balanced, as indicated by high m/μ0 ratio, except in the Bering Sea, where the m/μ0 ratio was 0.65, indicating the relative importance of the diatom-macrozooplankton grazing food chain and possible higher export flux to the deep layer. Flow cytometric analysis revealed that the growth rates of picoplankton (Synechococcus and picoeukaryotes) were usually much lower than the total phytoplankton community growth rates estimated from chlorophyll a, except for stations in the Gulf of Alaska Gyre, where the growth rates for different populations were about the same. Lower than community-average growth rate for picoplankton indicates larger phytoplankters, presumably diatoms, were growing at a much faster rate. Suppressed phytoplankton growth in the Gulf of Alaska was probably a result of iron limitation. © 2002 Elsevier Science Ltd. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Liu, Hongbin Suzuki, Koji Saino, Toshiro |
author_facet |
Liu, Hongbin Suzuki, Koji Saino, Toshiro |
author_sort |
Liu, Hongbin |
title |
Phytoplankton growth and microzooplankton grazing in the subarctic Pacific Ocean and the Bering Sea during summer 1999 |
title_short |
Phytoplankton growth and microzooplankton grazing in the subarctic Pacific Ocean and the Bering Sea during summer 1999 |
title_full |
Phytoplankton growth and microzooplankton grazing in the subarctic Pacific Ocean and the Bering Sea during summer 1999 |
title_fullStr |
Phytoplankton growth and microzooplankton grazing in the subarctic Pacific Ocean and the Bering Sea during summer 1999 |
title_full_unstemmed |
Phytoplankton growth and microzooplankton grazing in the subarctic Pacific Ocean and the Bering Sea during summer 1999 |
title_sort |
phytoplankton growth and microzooplankton grazing in the subarctic pacific ocean and the bering sea during summer 1999 |
publishDate |
2002 |
url |
http://repository.ust.hk/ir/Record/1783.1-43063 https://doi.org/10.1016/S0967-0637(01)00056-5 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=09670637&rft.volume=49&rft.issue=2&rft.date=2002&rft.spage=363&rft.aulast=Liu&rft.aufirst=Hongbin%7C&rft.atitle=Phytoplankton%20growth%20and%20microzooplankton%20grazing%20in%20the%20subarctic%20Pacific%20Ocean%20and%20the%20Bering%20Sea%20during%20summer%201999&rft.title=Deep-Sea%20Research%20Part%20I%3A%20Oceanographic%20Research%20Papers http://www.scopus.com/record/display.url?eid=2-s2.0-0036162512&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000173568900008 |
geographic |
Bering Sea Gulf of Alaska Pacific |
geographic_facet |
Bering Sea Gulf of Alaska Pacific |
genre |
Bering Sea Subarctic Alaska |
genre_facet |
Bering Sea Subarctic Alaska |
op_relation |
http://repository.ust.hk/ir/Record/1783.1-43063 Deep-Sea Research Part I: Oceanographic Research Papers, v. 49, (2), 2002, p. 363-375 0967-0637 https://doi.org/10.1016/S0967-0637(01)00056-5 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=09670637&rft.volume=49&rft.issue=2&rft.date=2002&rft.spage=363&rft.aulast=Liu&rft.aufirst=Hongbin%7C&rft.atitle=Phytoplankton%20growth%20and%20microzooplankton%20grazing%20in%20the%20subarctic%20Pacific%20Ocean%20and%20the%20Bering%20Sea%20during%20summer%201999&rft.title=Deep-Sea%20Research%20Part%20I%3A%20Oceanographic%20Research%20Papers http://www.scopus.com/record/display.url?eid=2-s2.0-0036162512&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000173568900008 |
op_doi |
https://doi.org/10.1016/S0967-0637(01)00056-5 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
49 |
container_issue |
2 |
container_start_page |
363 |
op_container_end_page |
375 |
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1766377330139201536 |