气候变化领域集成服务门户(CCPortal): Vascular Plants Are Globally Significant Contributors to Marine Carbon Fluxes and Sinks

CCPortal

DOI	10.1146/annurev-marine-010318-095333
	Vascular Plants Are Globally Significant Contributors to Marine Carbon Fluxes and Sinks
	Cragg S.M.; Friess D.A.; Gillis L.G.; Trevathan-Tackett S.M.; Terrett O.M.; Watts J.E.M.; Distel D.L.; Dupree P.
发表日期	2020
ISSN	1941-1405
起始页码	469
结束页码	497
卷号	12
英文摘要	More than two-thirds of global biomass consists of vascular plants. A portion of the detritus they generate is carried into the oceans from land and highly productive blue carbon ecosystems-salt marshes, mangrove forests, and seagrass meadows. This large detrital input receives scant attention in current models of the global carbon cycle, though for blue carbon ecosystems, increasingly well-constrained estimates of biomass, productivity, and carbon fluxes, reviewed in this article, are now available. We show that the fate of this detritus differs markedly from that of strictly marine origin, because the former contains lignocellulose-an energy-rich polymer complex of cellulose, hemicelluloses, and lignin that is resistant to enzymatic breakdown. This complex can be depolymerized for nutritional purposes by specialized marine prokaryotes, fungi, protists, and invertebrates using enzymes such as glycoside hydrolases and lytic polysaccharide monooxygenases to release sugar monomers. The lignin component, however, is less readily depolymerized, and detritus therefore becomes lignin enriched, particularly in anoxic sediments, and forms a major carbon sink in blue carbon ecosystems. Eventual lignin breakdown releases a wide variety of small molecules that may contribute significantly to the oceanic pool of recalcitrant dissolved organic carbon. Marine carbon fluxes and sinks dependent on lignocellulosic detritus are important ecosystem services that are vulnerable to human interventions. These services must be considered when protecting blue carbon ecosystems and planning initiatives aimed at mitigating anthropogenic carbon emissions. © 2020 by Annual Reviews. All rights reserved.
英文关键词	biodegradation; carbon sequestration; land-ocean aquatic continuum; lignocellulose; recalcitrance; vascular plant detritus
语种	英语
scopus关键词	Anoxic sediments; Biodegradation; Cellulose; Ecosystems; Forestry; Hydrolases; Lignin; Plants (botany); Anthropogenic carbon; Carbon sequestration; Dissolved organic carbon; Global carbon cycle; Glycoside hydrolases; lignocellulose; recalcitrance; Vascular plant; Organic carbon; biodegradation; biomass; carbon flux; carbon sequestration; carbon sink; cellulose; enzyme; enzyme activity; mangrove; marine environment; vascular plant; Biodegradation; Ecosystems; Forestry; Lignocellulose; Fungi; Invertebrata; Prokaryota; Protista; Tracheophyta; lignin; lignocellulose; aquatic species; biomass; carbon cycle; carbon sequestration; chemistry; ecosystem; environmental monitoring; enzymology; growth, development and aging; plant; procedures; sea; theoretical model; Aquatic Organisms; Biomass; Carbon Cycle; Carbon Sequestration; Ecosystem; Environmental Monitoring; Lignin; Models, Theoretical; Oceans and Seas; Plants
来源期刊	Annual Review of Marine Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/161937
作者单位	Institute of Marine Sciences, University of Portsmouth, Portsmouth, PO4 9LY, United Kingdom; Department of Geography, National University of Singapore, Singapore, 117570, Singapore; Leibniz-Zentrum für Marine Tropenforschung (ZMT), Bremen, 28359, Germany; Centre for Integrative Ecology, School of Life and Environmental Science, Deakin University, Burwood, VIC 3125, Australia; Department of Biochemistry, University of Cambridge, Cambridge, CB2 1QW, United Kingdom; School of Biological Sciences, University of Portsmouth, Portsmouth, PO1 2DY, United Kingdom; Ocean Genome Legacy Center of New England Biolabs, Marine Science Center, Northeastern University, Nahant, MA 01908, United States
推荐引用方式 GB/T 7714	Cragg S.M.,Friess D.A.,Gillis L.G.,et al. Vascular Plants Are Globally Significant Contributors to Marine Carbon Fluxes and Sinks[J],2020,12.
APA	Cragg S.M..,Friess D.A..,Gillis L.G..,Trevathan-Tackett S.M..,Terrett O.M..,...&Dupree P..(2020).Vascular Plants Are Globally Significant Contributors to Marine Carbon Fluxes and Sinks.Annual Review of Marine Science,12.
MLA	Cragg S.M.,et al."Vascular Plants Are Globally Significant Contributors to Marine Carbon Fluxes and Sinks".Annual Review of Marine Science 12(2020).