東京湾口部におけるクロロフィルα濃度とカイアシ類個体数の変動要因

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  • トウキョウ ワンコウブ ニ オケル クロロフィルaノウド ト カイアシルイ コタイスウ ノ ヘンドウ ヨウイン

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type:研究ノート

Chlorophyll a concentration and copepod abundance were measured in the entrance of Tokyo Bay in June, July, Septemberand November 2010. The chlorophyll a concentrations were more than 3 mg m^-3 in June and September within mixed layer.The chlorophyll a concentrations positively correlated with nitrate and nitrite, phosphate concentrations, which phytoplanktonbiomass is likely to be strongly affected by nutrient concentrations. In the 0-150m layer, mean abundance of copepods rangedfrom 39 to 421 inds. m^-3 and tended to increase from June to September. The abundance of copepods positively correlatedwith water temperature, whereas no significant correlation was found for the abundance of copepods and the chlorophyll aconcentrations. The abundance of copepods may be affected by water temperature rather than chlorophyll a concentration inthe entrance of the bay.

identifier:14

identifier:KJ00009458119

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