reference : Mangrove range expansion rapidly increases coastal wetland carbon storage

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Bibliographic fields
reftype Journal Article
Abstract The climate change-induced expansion of mangroves into salt marshes could significantly alter the carbon (C) storage capacity of coastal wetlands, which have the highest average C storage per land area among unmanaged terrestrial ecosystems. Mangrove range expansion is occurring globally, but little is known about how these rapid climate-driven shifts may alter ecosystem C storage. Here, we quantify current C stocks in ecotonal wetlands across gradients of marsh- to mangrove-dominance, and use unique chronological maps of vegetation cover to estimate C stock changes from 2003 to 2010 in a 567-km2 wildlife refuge in the mangrove-salt marsh ecotone. We report that over the 7-yr. period, total wetland C stocks increased 22 % due to mangrove encroachment into salt marshes. Newly established mangrove stands stored twice as much C on a per area basis as salt marsh primarily due to differences in aboveground biomass, and mangrove cover increased by 69 % during this short time interval. Wetland C storage within the wildlife refuge increased at a rate of 2.7 Mg C ha−1 yr.−1, more than doubling the naturally high coastal wetland C sequestration rates. Mangrove expansion could account for a globally significant increase of terrestrial C storage, which may exert a considerable negative feedback on warming.
Author Doughty, Cheryl L.; Langley, J. Adam; Walker, Wayne S.; Feller, Ilka C.; Schaub, Ronald; Chapman, Samantha K.
DOI 10.1007/s12237-015-9993-8
Date March 01
ISSN 1559-2731
Issue 2
Journal Estuaries and Coasts
Pages 385-396
Title Mangrove range expansion rapidly increases coastal wetland carbon storage
Type of Article journal article
Volume 39
Year 2016
Bibliographic identifiers
_record_number 24310
_uuid 345ce7da-0d5f-4840-b8d5-886be49a92cb