Coral reef ecosystems as a source of atmospheric CO2: evidence from PCO2 measurements of surface waters期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Coral reef ecosystems as a source of atmospheric CO2: evidence from PCO2 measurements of surface waters

Authors:	H. Kawahata A. Suzuki K. Goto

Affiliation:	(1) Marine Geology Department, Geological Survey of Japan, 1-1-3 Higashi, Tsukuba, 305, Japan e-mail: kawahata@gsj.go.jp, JP;(2) Graduate School of Science, Tohoku University, Sendai, 980–77, Japan, JP;(3) Kansai Environmental Engineering Center Co., Ltd., Osaka, 530, Japan, JP

Abstract:	Precise measurements of the partial pressure of CO₂ (PCO₂) in oceanic and lagoonal surface waters from Palau Barrier Reef and Majuro Atoll were taken to ascertain the net effect of these coral reef systems on air-sea CO₂ exchange. PCO₂ in the surface water in the lagoon of Palau Barrier Reef and Majuro Atoll was 48 and 14 μatm higher than in the surrounding oceanic water, respectively. A total carbon dioxide vs. total alkalinity diagram indicates that calcification is mainly responsible for CO₂ evasion in these coral reef systems. Accepted: 31 March 1997

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