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Free Content Stable Carbon and Nitrogen Isotope Ratios of Penaeid Juveniles and Primary Producers in a Riverine Mangrove in Guimaras, Philippines

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Stable carbon and nitrogen isotope ratios were analyzed for primary producers and juveniles of four penaeid species (Metapenaeus ensis, Penaeus indicus, P. merquiensis and P. monodon) in a riverine mangrove in Guimaras, central Philippines. δ13C values of shrimp (– 15.5 to – 19.6‰) were closer to phytoplankton (–23.8‰) and possibly epiphytic algae (–24.2‰) than to mangrove leaves (–26.9 to –30.0‰) or detritus (–28.0‰). Differences in δ15N values suggested 2–3 trophic shifts between phytoplankton (0.6‰) and shrimp (6.9‰), assuming a 2.4‰ enrichment per trophic level. There were no significant differences in δ13C and δ15N ratios between green and decomposing leaves, and among mangrove species, shrimp species and different size groups of shrimp.

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Document Type: Research Article

Publication date: May 1, 1996

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  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
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