气候变化领域集成服务门户(CCPortal): It's time to broaden what we consider a 'blue carbon ecosystem'

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DOI	10.1111/gcb.17261
	It's time to broaden what we consider a 'blue carbon ecosystem'
	James, Kelly; Macreadie, Peter I.; Burdett, Heidi L.; Davies, Ian; Kamenos, Nicholas A.
发表日期	2024
ISSN	1354-1013
EISSN	1365-2486
起始页码	30
结束页码	5
卷号	30 期号:5
英文摘要	Photoautotrophic marine ecosystems can lock up organic carbon in their biomass and the associated organic sediments they trap over millennia and are thus regarded as blue carbon ecosystems. Because of the ability of marine ecosystems to lock up organic carbon for millennia, blue carbon is receiving much attention within the United Nations' 2030 Agenda for Sustainable Development as a nature-based solution (NBS) to climate change, but classically still focuses on seagrass meadows, mangrove forests, and tidal marshes. However, other coastal ecosystems could also be important for blue carbon storage, but remain largely neglected in both carbon cycling budgets and NBS strategic planning. Using a meta-analysis of 253 research publications, we identify other coastal ecosystems-including mud flats, fjords, coralline algal (rhodolith) beds, and some components or coral reef systems-with a strong capacity to act as blue carbon sinks in certain situations. Features that promote blue carbon burial within these 'non-classical' blue carbon ecosystems included: (1) balancing of carbon release by calcification via carbon uptake at the individual and ecosystem levels; (2) high rates of allochthonous organic carbon supply because of high particle trapping capacity; (3) high rates of carbon preservation and low remineralization rates; and (4) location in depositional environments. Some of these features are context-dependent, meaning that these ecosystems were blue carbon sinks in some locations, but not others. Therefore, we provide a universal framework that can evaluate the likelihood of a given ecosystem to behave as a blue carbon sink for a given context. Overall, this paper seeks to encourage consideration of non-classical blue carbon ecosystems within NBS strategies, allowing more complete blue carbon accounting. Marine ecosystems are important in mitigating rising atmospheric CO2 because of their capacity to store significant quantities of carbon (called blue carbon). To date, three key blue carbon ecosystems have been recognized (seagrass meadows, mangrove forests, tidal marshes), however, evidence is emerging that other ecosystems may also be important. Here, we use meta-analysis of 253 research publications to investigating the role of other marine ecosystems in blue carbon. At present, mud/tidal flats, shallow sediments/fjords, some components of coral reef systems (e.g. lagoons), and coralline algal beds should also be considered important for blue carbon burial.image
英文关键词	bivalve; blue carbon; burial; coral; coralline algae; nature-based solution; sediment; sequestration
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS记录号	WOS:001214910300001
来源期刊	GLOBAL CHANGE BIOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/305809
作者单位	Deakin University; Umea University; Umea University; Marine Scotland Science (MSS)
推荐引用方式 GB/T 7714	James, Kelly,Macreadie, Peter I.,Burdett, Heidi L.,et al. It's time to broaden what we consider a 'blue carbon ecosystem'[J],2024,30(5).
APA	James, Kelly,Macreadie, Peter I.,Burdett, Heidi L.,Davies, Ian,&Kamenos, Nicholas A..(2024).It's time to broaden what we consider a 'blue carbon ecosystem'.GLOBAL CHANGE BIOLOGY,30(5).
MLA	James, Kelly,et al."It's time to broaden what we consider a 'blue carbon ecosystem'".GLOBAL CHANGE BIOLOGY 30.5(2024).