Blue carbon storage in Fijian seagrass meadows: First insights into carbon, nitrogen and phosphorus content from a tropical southwest Pacific Island

Singh, Shalini and Lal, Monal M. and Southgate, Paul C. and Wairiu, Morgan and Singh, Awnesh M. (2022) Blue carbon storage in Fijian seagrass meadows: First insights into carbon, nitrogen and phosphorus content from a tropical southwest Pacific Island. Marine Pollution Bulletin, 176 . p. 113432. ISSN 0025-326X

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Abstract

Seagrasses provide vital ecosystem services which include the accumulation and storage of carbon and nutrients in sediments and biomass. Despite their importance in climate change mitigation and adaptation, seagrass ecosystems have been poorly studied, particularly in the Pacific. Therefore, the present study assessed variability in sedimentary and vegetative C, N and P storage in three monospecific seagrass meadows (Halophila ovalis, Halodule pinifolia and Halodule uninervis), reporting baseline data for the first time. Sediment Corg stocks ranged from 31 to 47 Mg C ha−1 and varied (p < 0.001) between seagrass meadows, unvegetated areas and locations. Comparison of N and P storage between vegetated meadows and unvegetated areas revealed differences (p < 0.05); implying seagrass meadows function as C, N and P sinks. Differences in species composition and environmental conditions, may play a key role in estimating C, N and P stocks, which are valuable data for conservation and monitoring of seagrass ecosystems.

Item Type:	Journal Article
Uncontrolled Keywords:	Blue carbon, Sediment storage, Biomass, Seagrass, Intertidal habitats, Fiji
Subjects:	G Geography. Anthropology. Recreation > GE Environmental Sciences Q Science > Q Science (General)
Divisions:	Pacific Centre for Environment and Sustainable Development (PACE-SD)
Depositing User:	Fulori Nainoca - Waqairagata
Date Deposited:	31 Mar 2022 06:03
Last Modified:	04 Oct 2022 00:17
URI:	http://repository.usp.ac.fj/id/eprint/13335

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