2014
DOI: 10.3354/meps10968
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Planktonic biomass size spectra: an emergent property of size-dependent physiological rates, food web dynamics, and nutrient regimes

Abstract: The systematic change in a trait with size is a concise means of representing the diversity and organization of planktonic organisms. Using this simplifying principle, we investigated how interactions between trophic levels, resource concentration, and physiological rates structure the planktonic community. Specifically, we used 3 size-structured nutrient-phytoplankton-zooplankton models differing in their trophic interactions, ranging from herbivorous grazing on one size class to omnivorous grazing on multipl… Show more

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Cited by 36 publications
(54 citation statements)
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References 91 publications
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“…Growth rate is determined by temperature‐regulated maximum growth rate µ i , light availability I , and nutrient limitation described as a Michaelis‐Menten function with size‐dependent half saturation constant ks (Table ). Maximum growth rate was computed as a function of the size‐dependent maximum growth rate µmax at 20°C (Table ) and temperature T (°C), using a Q 10 of 1.62 (Taniguchi et al ): μi = normalμmaxi1.62true(T20true)/10 …”
Section: An Explanatory Modelmentioning
confidence: 99%
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“…Growth rate is determined by temperature‐regulated maximum growth rate µ i , light availability I , and nutrient limitation described as a Michaelis‐Menten function with size‐dependent half saturation constant ks (Table ). Maximum growth rate was computed as a function of the size‐dependent maximum growth rate µmax at 20°C (Table ) and temperature T (°C), using a Q 10 of 1.62 (Taniguchi et al ): μi = normalμmaxi1.62true(T20true)/10 …”
Section: An Explanatory Modelmentioning
confidence: 99%
“…I modified the grazing equation from the original approach of Taniguchi et al () by prescribing a low phytoplankton biomass pm (= 0.1 μM N) at which grazing was set to zero. This allowed a minimum phytoplankton biomass in the simulations comparable to the minimum Chl a concentrations measured in San Francisco Bay of about 0.5 mg m −3 .…”
Section: An Explanatory Modelmentioning
confidence: 99%
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“…Moreover, observations suggest that mesoscale turbulence might also shape the distribution of zooplankton types [51]. Addressing this question requires a model with more complexity in the description of grazers [52,53] and will be the subject of a subsequent study.…”
mentioning
confidence: 99%
“…The microzooplankton GGE was taken directly from Taniguchi et al . (). Uncertainty ranges on virus GGE were calculated with upper and lower bounds of Eq.…”
Section: Resultsmentioning
confidence: 97%