LEGENDRE, L; RASSOULZADEGAN, F; MICHAUD, J

doi:10.1093/plankt/21.9.1643

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LEGENDRE, L
Laboratoire d'océanographie de Villefranche [LOV]

RASSOULZADEGAN, F
Laboratoire d'océanographie de Villefranche [LOV]

MICHAUD, J
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

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Journal of Plankton Research. 1999, vol. 21, n° 9, p. 1643-1658

Oxford University Press (OUP)

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A new approach is described to identify the dominant process (physical versus biological) in a pelagic marine ecosystem, from simple biological oceanographic field variables. The approach is based on quantification of the matching (M) between phytoplankton production (P) and losses, from held estimates of chlorophyll a (Chl) and P. Coefficient Ail is estimated for a wide range of oceanic and coastal environments and of trophic characteristics, using data from the literature. Results show that M characterizes the dominance of physical versus biological processes in pelagic systems. The coefficient may be especially useful as a means for extracting process information on pelagic marine ecosystems from large data sets of Chi and P, e.g. recorded by moored instruments or provided by satellite images of ocean colour.< Leer menos

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Identifying the dominant processes (physical versus biological) in pelagic marine ecosystems from held estimates of chlorophyll a and phytoplankton production

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