Abstract
A one-dimensional numerical model is used to simulate the transition from spring plankton bloom to oligotrophic profiles. The phytoplankton population is represented by a statistically significant number of individual particles. This Lagrangian-ensemble method permits explicit integration of non-linear equations for the interaction between physics, biochemistry and physiology. The model accurately simulates the form of observed nutrient and chlorophyll profiles. It shows how the subsurface chlorophyll maximum results from the physical environment and nutrient depletion in the upper levels. Nutrient uptake creates a nutricline which slowly descends during the late spring; the chlorophyll maximum intensifies and descends with the nutricline. An oligotrophic situation in the ocean is characterised by a space of a few decametres between the nutricline and the nocturnal turbocline. Slow upwelling does not change this result.
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Wolf, K.U., Woods, J.D. (1988). Lagrangian Simulation of Primary Production in the Physical Environment — The Deep Chlorophyll Maximum and Nutricline. In: Rothschild, B.J. (eds) Toward a Theory on Biological-Physical Interactions in the World Ocean. NATO ASI Series, vol 239. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-3023-0_4
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DOI: https://doi.org/10.1007/978-94-009-3023-0_4
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