Aragonite Undersaturation in the Arctic Ocean: Effects of Ocean Acidification and Sea Ice Melt

被引：249

作者：

Yamamoto-Kawai, Michiyo ^{[1
]}

McLaughlin, Fiona A. ^{[1
]}

Carmack, Eddy C. ^{[1
]}

Nishino, Shigeto ^{[2
]}

Shimada, Koji ^{[2
,3
]}

机构：

[1] Inst Ocean Sci, Dept Fisheries & Oceans, Sidney, BC V8L 4B2, Canada

[2] Japan Agcy Marine Earth Sci & Technol, Res Inst Global Change, Yokosuka, Kanagawa 2370061, Japan

[3] Tokyo Univ Marine Sci & Technol, Minato Ku, Tokyo 1088477, Japan

来源：

SCIENCE | 2009年 / 326卷 / 5956期

关键词：

IMPACT; CYCLE;

D O I：

10.1126/science.1174190

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The increase in anthropogenic carbon dioxide emissions and attendant increase in ocean acidification and sea ice melt act together to decrease the saturation state of calcium carbonate in the Canada Basin of the Arctic Ocean. In 2008, surface waters were undersaturated with respect to aragonite, a relatively soluble form of calcium carbonate found in plankton and invertebrates. Undersaturation was found to be a direct consequence of the recent extensive melting of sea ice in the Canada Basin. In addition, the retreat of the ice edge well past the shelf-break has produced conditions favorable to enhanced upwelling of subsurface, aragonite-undersaturated water onto the Arctic continental shelf. Undersaturation will affect both planktonic and benthic calcifying biota and therefore the composition of the Arctic ecosystem.

引用

页码：1098 / 1100

页数：3

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