A marine heatwave drives massive losses from the world's largest seagrass carbon stocks

被引：341

作者：

Arias-Ortiz, A. ^{[1
,2
]}

Serrano, O. ^{[3
,4
,5
]}

Masque, P. ^{[1
,2
,3
,4
,5
]}

Lavery, P. S. ^{[3
,4
,6
]}

Mueller, U. ^{[3
,4
]}

Kendrick, G. A. ^{[5
,7
]}

Rozaimi, M. ^{[3
,4
,8
]}

Esteban, A. ^{[3
,4
]}

Fourqurean, J. W. ^{[7
,9
,10
]}

Marba, N. ^{[11
]}

Mateo, M. A. ^{[3
,4
,6
]}

Murray, K. ^{[12
]}

Rule, M. J. ^{[5
,12
]}

Duarte, C. M. ^{[11
,13
]}

机构：

[1] Univ Autonoma Barcelona, Inst Ciencia & Tecnol Ambientals, Barcelona, Spain

[2] Univ Autonoma Barcelona, Dept Fis, Barcelona, Spain

[3] Edith Cowan Univ, Sch Sci, Joondalup, WA, Australia

[4] Edith Cowan Univ, Ctr Marine Ecosyst Res, Joondalup, WA, Australia

[5] Univ Western Australia, Oceans Inst, Crawley, WA, Australia

[6] CSIC, Ctr Adv Studies Blanes CEAB, Blanes, Spain

[7] Univ Western Australia, Sch Biol Sci, Crawley, WA, Australia

[8] Univ Kebangsaan Malaysia, Fac Sci & Technol, Sch Environm & Nat Resource Sci, Ukm Bangi, Selangor, Malaysia

[9] Florida Int Univ, Dept Biol Sci & Marine Educ, Miami, FL 33199 USA

[10] Florida Int Univ, Res Ctr, Miami, FL 33199 USA

[11] IMEDEA CSIC UIB Inst Mediterrani Estudis Avancats, Global Change Res Grp, Esporles, Mallorca, Spain

[12] Dept Biodivers Conservat & Attract, Kensington, WA, Australia

[13] King Abdullah Univ Sci & Technol, RSRC, Thuwal, Saudi Arabia

来源：

NATURE CLIMATE CHANGE | 2018年 / 8卷 / 04期

基金：

美国国家科学基金会;

关键词：

BLUE CARBON; ORGANIC-MATTER; FLORIDA BAY; SHARK BAY; SEDIMENTS; AUSTRALIA; DECOMPOSITION; TERRESTRIAL; PATTERNS; RECOVERY;

D O I：

10.1038/s41558-018-0096-y

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Seagrass ecosystems contain globally significant organic carbon (C) stocks. However, climate change and increasing frequency of extreme events threaten their preservation. Shark Bay, Western Australia, has the largest C stock reported for a seagrass ecosystem, containing up to 1.3% of the total C stored within the top metre of seagrass sediments worldwide. On the basis of field studies and satellite imagery, we estimate that 36% of Shark Bay's seagrass meadows were damaged following a marine heatwave in 2010/2011. Assuming that 10 to 50% of the seagrass sediment C stock was exposed to oxic conditions after disturbance, between 2 and 9 Tg CO2 could have been released to the atmosphere during the following three years, increasing emissions from land-use change in Australia by 4-21% per annum. With heatwaves predicted to increase with further climate warming, conservation of seagrass ecosystems is essential to avoid adverse feedbacks on the climate system.

引用

页码：338 / +

页数：9

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