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Title: The coupling of bacterial production and hydrography in the southern East China Sea: Spatial patterns in spring and fall
Authors: Shiah, Fuh-Kwo
Liu, Kon-Kee
Kao, Shuh-Ji
Gong, Gwo-Ching
Contributors: 國立臺灣海洋大學:海洋環境化學與生態研究所
Keywords: Bacterioplankton
Continental shelf
Date: 2000-03
Issue Date: 2017-02-08
Publisher: Continental Shelf Research
Abstract: Abstract: Heterotrophic bacterial biomass, production and turnover rates were investigated in a transect across the continental shelf of the southern East China Sea during spring and fall. The sampling area covered different water types including nutrient-rich coastal and upwelling waters as well as oligotrophic Kuroshio waters. On area basis, bacterial biomass (IBB; 350–1200 mgC m−2), production (IBP; 28–329 mgC m−2 d−1) and averaged turnover rates (μ=IBP/IBB; 0.09–0.22 d−1) in the coastal and upwelling areas were at least 2-fold of those in the Kuroshio waters. IBB, IBP and μ were positively correlated with primary production (IPP; 90–2133 mgC m−2 d−1) and particulate organic carbon (IPOC; 1415–4682 mgC m−2) but showed a negative trend with temperature in the outer shelf area. While in the inner shelf (<20°C), IBP and μ were positively correlated with temperature; the Q10 value for bacterial μ was 3.12. These indicated that the spatial patterns of IBB, IBP and μ were more likely to be controlled by substrate supply and temperature interactively. Values of IBP : IPP ratio ranged 6–42% with an average of 22±10%. Under the assumption of a growth efficiency of 20%, shelf bacteria might consume carbon equivalent to almost 100% of the in situ daily particulate IPP. Dissolved organic carbon from non-phytoplankton and allochothonous sources might play a significant role in supporting bacterial carbon demand in the shelf area of the East China Sea.
Relation: 20(4-5)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41000
Appears in Collections:[海洋環境與生態研究所] 期刊論文

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