气候变化领域集成服务门户(CCPortal): Seaweed ecosystems may not mitigate CO2 emissions

CCPortal

DOI	10.1093/icesjms/fsac011
	Seaweed ecosystems may not mitigate CO2 emissions
	Gallagher, John Barry; Shelamoff, Victor; Layton, Cayne
发表日期	2022
ISSN	1054-3139
EISSN	1095-9289
起始页码	585
结束页码	592
卷号	79 期号:3
英文摘要	Global seaweed carbon sequestration estimates are currently taken as the fraction of the net primary production (NPP) exported to the deep ocean. However, this perspective does not account for CO2 from the consumption of external subsidies. Here, we clarify: (i) the role of export relative to seaweed net ecosystem production (NEP) for a closed system and one more likely open to subsidies; (ii) the importance of subsidies by compiling published estimates of NEP from seaweed-dominated ecosystems; and (iii) discuss their impact on the global seaweed net carbon balance and other sequestration constraints as a mitigation service. Examples of seaweed NEP (n = 18) were sparse and variable. Nevertheless, the average NEP (-4.0 mmol C m(-2) d(-1) SE +/- 12.2) suggested that seaweed ecosystems are a C source, becoming increasingly heterotrophic as their export is consumed. Critically, mitigation of greenhouse gas emissions was mixed relative to their replacement or baseline states, and where CO2 is supplied independently of organic metabolism and atmospheric exchange, we caution a sole reliance on NEP or NPP. This will ensure a more accurate seaweed mitigation assessment, one that does exceed their capacity and is effective within a compliance and carbon trading scheme.
英文关键词	carbon mitigation; golden carbon; net ecosystem production; seaweed aquaculture; subsidies
语种	英语
WOS研究方向	Fisheries ; Marine & Freshwater Biology ; Oceanography
WOS类目	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000756964400001
来源期刊	ICES JOURNAL OF MARINE SCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/280959
作者单位	University of Tasmania; University of Tasmania
推荐引用方式 GB/T 7714	Gallagher, John Barry,Shelamoff, Victor,Layton, Cayne. Seaweed ecosystems may not mitigate CO2 emissions[J],2022,79(3).
APA	Gallagher, John Barry,Shelamoff, Victor,&Layton, Cayne.(2022).Seaweed ecosystems may not mitigate CO2 emissions.ICES JOURNAL OF MARINE SCIENCE,79(3).
MLA	Gallagher, John Barry,et al."Seaweed ecosystems may not mitigate CO2 emissions".ICES JOURNAL OF MARINE SCIENCE 79.3(2022).