Academic Journal

Sources of suspended organic matter and selective feeding by zooplankton in an estuarine mangrove ecosystem, as traced by stable isotopes

Λεπτομέρειες βιβλιογραφικής εγγραφής
Τίτλος: Sources of suspended organic matter and selective feeding by zooplankton in an estuarine mangrove ecosystem, as traced by stable isotopes
Συγγραφείς: Bouillon, S., Mohan, P.C., Sreenivas, N., Dehairs, F.A.
Πηγή: %3Ci%3EMar.+Ecol.+Prog.+Ser.+208%3C%2Fi%3E%3A+79-92.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.3354%2Fmeps208079%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.3354%2Fmeps208079%3C%2Fa%3E
Έτος έκδοσης: 2000
Συλλογή: Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
Θεματικοί όροι: Avicennia, Carbon, Detritus, Excoecaria agallocha, Mangrove swamps, Phytoplankton, Seasonal variations, Selective feeding, Suspended organic matter, Zooplankton, Algae
Περιγραφή: Between January 1995 and August 1996, suspended matter and zooplankton were sampled at different locations in a mangrove ecosystem located in the Gautami Godavari Estuary and adjacent Kakinada Bay (Andhra Pradesh, India). Suspended matter was sampled at 13 different stations, and was found to have a highly variable carbon stable isotope composition, with delta 13 C values ranging overall between -30.94 and -19.18 ppt, and a highly variable elemental (C:N) composition. Our data suggest that the phytoplankton component has a seasonally and spatially variable delta 13 C signature, which is surpressed by the terrestrial signal but may at times fall in the same range as the delta 13 C of the allochtonous matter. It is argued that the phytoplankton delta 13 C decreases after the onset of the monsoon rains, most likely due to the 13 C-depletion of the DIC pool caused by the microbial respiration of the allochtonous organic matter. At each of the 4 sites selected for concurrent zooplankton sampling, the zooplankton showed a much wider range of delta 13 C than did the suspended matter, with overall delta 13 C values between -30.14 and -16.45 ppt. In addition, spatial differences in average delta 13 C were much more pronounced for zooplankton than for total suspended matter. These data indicate that zooplankton feed on a component of the suspended matter pool, which has more pronounced seasonal and spatial delta 13 C variations than the total suspended matter. Thus, despite the large amounts of terrestrial and mangrove detritus present in the water column, the locally produced phytoplankton appears to be a more important carbon source for the zooplankton.
Τύπος εγγράφου: article in journal/newspaper
Περιγραφή αρχείου: application/pdf
Γλώσσα: English
Relation: info:eu-repo/semantics/altIdentifier/wos/000166447900007; https://www.vliz.be/imisdocs/publications/98270.pdf
Διαθεσιμότητα: https://www.vliz.be/imisdocs/publications/98270.pdf
Rights: info:eu-repo/semantics/openAccess
Αριθμός Καταχώρησης: edsbas.A1E55D70
Βάση Δεδομένων: BASE
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