Herbeck, Lucia S., Sollich, Miriam, Unger, Daniela, Holmer, Marianne and Jennerjahn, Tim C. (2014) Impact of pond aquaculture effluents on seagrass performance in NE Hainan, tropical China. Marine Pollution Bulletin, 85 (1). pp. 190-203. DOI https://doi.org/10.1016/j.marpolbul.2014.05.050.

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Abstract

The impact of pond aquaculture effluents on the distribution and performance of seagrasses was examined in NE Hainan, tropical China. Samples were taken along transects in three back-reef areas with different extent of aquaculture production in their hinterland. High δ15N in seagrass leaves and epiphytes (6–9‰) similar to values in pond effluents documented aquaculture as dominant nitrogen source in the back-reefs with decreasing impact with distance from shore. Seagrass species abundance, shoot density and biomass were lower and concentrations of nutrients, chlorophyll and suspended matter were higher at nearshore sites with high and moderate pond abundance than at the control site. High epiphyte loads and low δ34S in seagrass leaves suggest temporal shading and sulphide poisoning of the nearshore seagrasses. Observed gradients in environmental parameters and seagrass performance indicate that the distance from the pond outlets and size of the adjacent pond agglomeration are major determinants of seagrass degradation.

Document Type:	Article
Programme Area:	PA3
Research affiliation:	Ecology > Mangrove Ecology Biogeochemistry and Geology > Ecological Biogeochemistry
Refereed:	Yes
Open Access Journal?:	No
DOI:	https://doi.org/10.1016/j.marpolbul.2014.05.050
ISSN:	0025326X
Date Deposited:	09 Aug 2019 13:44
Last Modified:	06 Jun 2024 12:36
URI:	http://cris.leibniz-zmt.de/id/eprint/2542

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