Critical Conditions for Phytoplankton Blooms
نویسندگان
چکیده
منابع مشابه
Critical conditions for phytoplankton blooms.
We motivate and analyse a reaction-advection-diffusion model for the dynamics of a phytoplankton species. The reproductive rate of the phytoplankton is determined by the local light intensity. The light intensity decreases with depth due to absorption by water and phytoplankton. Phytoplankton is transported by turbulent diffusion in a water column of given depth. Furthermore, it might be sinkin...
متن کاملRAPPORT Critical conditions for phytoplankton blooms
We motivate and analyze a reaction-advection-di usion model for the dynamics of a phytoplankton species. The reproductive rate of the phytoplankton is determined by the local light intensity. The light intensity decreases with depth due to absorption by water and phytoplankton. Phytoplankton is transported by turbulent di usion in a water column of given depth. Furthermore, it might be sinking ...
متن کاملCritical Conditions for Phytoplankton
We motivate and analyze a reaction-advection-diiusion model for the dynamics of a phytoplankton species. The reproductive rate of the phytoplankton is determined by the local light intensity. The light intensity decreases with depth due to absorption by water and phytoplankton. Phytoplankton is transported by turbulent diiusion in a water column of given depth. Furthermore, it might be sinking ...
متن کاملAbandoning Sverdrup's Critical Depth Hypothesis on phytoplankton blooms.
The Critical Depth Hypothesis formalized by Sverdrup in 1953 posits that vernal phytoplankton blooms occur when surface mixing shoals to a depth shallower than a critical depth horizon defining the point where phytoplankton growth exceeds losses. This hypothesis has since served as a cornerstone in plankton ecology and reflects the very common assumption that blooms are caused by enhanced growt...
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We analyse a generic bottom-up nutrient phytoplankton model to help understand the dynamics of seasonally recurring algae blooms. The deterministic model displays a wide spectrum of dynamical behaviours, from simple cyclical blooms which trigger annually, to irregular chaotic blooms in which both the time between outbreaks and their magnitudes are erratic. Unusually, despite the persistent seas...
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ژورنال
عنوان ژورنال: Bulletin of Mathematical Biology
سال: 2001
ISSN: 0092-8240
DOI: 10.1006/bulm.2001.0261