作者
Michael J Ellwood
发表日期
2008/11/16
期刊
Marine Chemistry
卷号
112
期号
1-2
页码范围
107-117
出版商
Elsevier
简介
In high nitrate low chlorophyll (HNLC) oceanic regions, trace metals play a key role in regulating phytoplankton productivity; however large knowledge gaps remain in the biogeochecmical cycling of trace metals in these areas. Here I present the first comprehensive winter dataset (0–1000 m depth) for dissolved zinc, cadmium, copper, nickel, cobalt, and lead along with the macronutrinets phosphate and silicon, between 40°S–52°S, which traverses the Subantarctic zone (SAZ), east of Australia. Dissolved lead concentrations were conservative with depth with values ranging between 12 and 33 pmol kg−1. Surface dissolved concentrations for cadmium, copper, nickel, cobalt and phosphate showed large north–south gradients, with lower concentrations at the Subtropical Front (∼43°S) and higher concentrations at the Subantarctic Front (∼51°S). Profiles of dissolved cadmium, copper, nickel and cobalt concentration …
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