Identifying the dominant processes (physical versus biological) in pelagic marine ecosystems from held estimates of chlorophyll a and phytoplankton production
Language
en
Article de revue
This item was published in
Journal of Plankton Research. 1999, vol. 21, n° 9, p. 1643-1658
Oxford University Press (OUP)
English Abstract
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 ...Read more >
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.Read less <
Origin
Hal imported