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Biomass and trophic structure of the plankton community in subtropical and temperate waters of the northwestern Pacific Ocean

Cited 4 time in scopus
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Title
Biomass and trophic structure of the plankton community in subtropical and temperate waters of the northwestern Pacific Ocean
Authors
Choi, Keun H.
Lee, Chang-Rae
Noh, Jae Hoon
Choi, Dong Han
Yang, Eun Jin
Kang, Hyung-Ku
Subject
Oceanography
Keywords
Biomass structure; Microbial food web; Northwestern Pacific Ocean; Trophic cascade; Western Pacific warm pool
Issue Date
2012
Publisher
The Oceanography Society of Japan and Springer
Citation
Choi, Keun H., et al. 2012. "Biomass and trophic structure of the plankton community in subtropical and temperate waters of the northwestern Pacific Ocean". JOURNAL OF OCEANOGRAPHY, 68(1): 473-482.
Abstract
This study examined the biomass structure of autotrophic and heterotrophic plankton long a trophic gradient in the northwestern Pacific Ocean in an attempt to understand planktonic food web structure. Autotrophic biomass exceeded that of heterotrophic organisms in all sampling regions, but with lesser contribution to total planktonic biomass at stations of higher phytoplankton biomass, including the northern East China Sea, compared to the regions of lower phytoplankton biomass. The proportion of the biomass of heterotrophic bacteria, nanoflagellates (HNF), and dinoflagellates (HDF) relative to that of phytoplankton was all inversely related to phytoplankton biomass, but positive relationships were observed for both ciliates and mesozooplankton. Mesozooplankton biomass inclined greater than phytoplankton along the gradient of phytoplankton biomass, with biomass rise being most closely associated with ciliate and HDF biomass and, to a lesser degree, with large phytoplankton ([3 lm). Both bacteria and picophytoplankton were significantly and positively related to the biomass ratio of mesozooplankton to the sum of HDF and ciliates (i.e., proxy of mesozooplankton predation on protozoans), but no positive relationship was apparent either for HNF or for large phytoplankton. Such relationships may result from predation relief on lower food webs associated with mesozooplankton feeding on protistan plankton.
URI
http://repository.kopri.re.kr/handle/201206/5677
DOI
http://dx.doi.org/10.1007/s10872-012-0111-2
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