Trophic structure and functioning in a eutrophic and poorly flushed lagoon in southwestern Taiwan

Marine Environmental Research
Hsing-Juh LinJia-Jang Hung

Abstract

Tapong Bay, a eutrophic and poorly flushed tropical lagoon, supports intensive oyster culture. Using the Ecopath approach and network analysis, a mass-balanced trophic model was constructed to analyze the structure and matter flows within the food web. The lagoon model is comprised of 18 compartments with the highest trophic level of 3.2 for piscivorous fish. The high pedigree index (0.82) reveals the model to be of high quality. The most-prominent living compartment in terms of matter flow and biomass in the lagoon is cultured oysters and bivalves, respectively. The mixed trophic impacts indicate that phytoplankton and periphyton are the most-influential living compartments in the lagoon. Comparative analyses with the eutrophic and well-flushed Chiku Lagoon and non-eutrophic tropical lagoons show that high nutrient loadings might stimulate the growth and accumulation of phytoplankton and periphyton and therefore support high fishery yields. However, net primary production, total biomass, fishery yields per unit area, and mean transfer efficiency of Tapong Bay were remarkably lower than those of Chiku Lagoon. The lower transfer efficiency likely results from the low mortality of cultured oysters and invasive bivalves from preda...Continue Reading

References

Apr 18, 1969·Science·E P Odum
Jun 13, 2002·Proceedings of the National Academy of Sciences of the United States of America·William V SobczakAnke B Müller-Solger
Jan 1, 1995·Environmental Pollution·P W BallsA C Edwards

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Citations

Mar 3, 2010·Environmental Monitoring and Assessment·Chung-Yi ChungShao-Wei Liao
Jul 17, 2013·Environmental Monitoring and Assessment·R González-De ZayasF S Castillo-Sandoval
May 26, 2009·Marine Environmental Research·Pi-Jen LiuHsing-Juh Lin
Sep 11, 2007·Marine Pollution Bulletin·Hsing-Juh LinYi-Ting Hsiao
Jan 31, 2018·Environmental Monitoring and Assessment·Roman Cieśliński, Alicja Olszewska

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