A mesoscale iron enrichment in the western Subarctic Pacific induces a large centric diatom bloom

被引：407

作者：

Tsuda, A ^{[15
]}

Takeda, S

Saito, H

Nishioka, J

Nojiri, Y

Kudo, I

Kiyosawa, H

Shiomoto, A

Imai, K

Ono, T

Shimamoto, A

Tsumune, D

Yoshimura, T

Aono, T

Hinuma, A

Kinugasa, M

Suzuki, K

Sohrin, Y

Noiri, Y

Tani, H

Deguchi, Y

Tsurushima, N

Ogawa, H

Fukami, K

Kuma, K

Saino, T

机构：

[1] Hokkaido Natl Res Inst, Kushira, Hokkaido 0850802, Japan

[2] Univ Tokyo, Dept Aquat Biosci, Bunkyo Ku, Tokyo 1138657, Japan

[3] Tohoku Natl Fisheries Res Inst, Shiogama, Miyagi 9850001, Japan

[4] Cent Res Inst Elect Power Ind, Chiba 2701194, Japan

[5] Natl Inst Environm Studies, Tsukuba, Ibaraki 3058506, Japan

[6] Hokkaido Univ, Grad Sch Fisheries Sci, Hakodate, Hokkaido 0418611, Japan

[7] Marine Biol Res Inst Japan, Shinagawa Ku, Tokyo 1420042, Japan

[8] Natl Res Inst Far Seas Fisheries, Shizuoka 4248633, Japan

[9] Japan Sci & Technol Corp, Kawaguchi, Saitama 3320012, Japan

[10] Kansai Environm Engn Ctr, Osaka 5410052, Japan

[11] Natl Inst Radiol Sci, Hitachinaka, Ibaraki 3111202, Japan

[12] Nagoya Univ, Hydrospher Atmospher Res Ctr, Chikusa Ku, Nagoya, Aichi 4648601, Japan

[13] Kyoto Univ, Inst Chem Res, Kyoto 6110011, Japan

[14] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058569, Japan

[15] Univ Tokyo, Ocean Res Inst, Nakano Ku, Tokyo 1648639, Japan

[16] Kochi Univ, Nanko Ku, Kochi 7838502, Japan

来源：

SCIENCE | 2003年 / 300卷 / 5621期

关键词：

D O I：

10.1126/science.1082000

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：

We have performed an in situ test of the iron limitation hypothesis in the subarctic North Pacific Ocean. A single enrichment of dissolved iron caused a large increase in phytoplankton standing stock and decreases in macronutrients and dissolved carbon dioxide. The dominant phytoplankton species shifted after the iron addition from pennate diatoms to a centric diatom, Chaetoceros debilis, that showed a very high growth rate, 2.6 doublings per day. We conclude that the bioavailability of iron regulates the magnitude of the phytoplankton biomass and the key phytoplankton species that determine the biogeochemical sensitivity to iron supply of high-nitrate, low-chlorophyll waters.

引用

页码：958 / 961

页数：4

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