Grazing optimization and nutrient cycling: when do herbivores enhance plant production?

In a general theoretical ecosystem model, we investigate the conditions under which herbivores increase primary production and lead to grazing optimization through recycling of a limiting nutrient. Analytical and simulation studies of the model lead to several general results. Grazing optimization r...

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Veröffentlicht in:	Ecology (Durham) 1998-10, Vol.79 (7), p.2242-2252
Hauptverfasser:	de Mazancourt, Claire, Loreau, Michel, Abbadie, Luc
Format:	Artikel
Sprache:	eng
Schlagworte:	Animal and plant ecology Animal behavior Animal, plant and microbial ecology Biogeochemical cycles Biological and medical sciences BIOMASA BIOMASS BIOMASSE CICLO BIOGEOQUIMICO CYCLE BIOGEOCHIMIQUE CYCLING Detritus detritus pathway ECOLOGIA Ecological balance ECOLOGIE ECOLOGY Ecosystem models Ecosystems Effects of Large Mammals on Soil Nutrient Dynamics Environmental aspects Fundamental and applied biological sciences. Psychology GRAZING Grazing intensity grazing optimization HERBIVORE HERBIVORES HERBIVOROS herbivory input–output balance MATHEMATICAL MODELS MODELE MATHEMATIQUE MODELOS MATEMATICOS Nutrient cycle nutrient cycling Nutrient uptake Nutrition PASTOREO PATURAGE Plants PRIMARY PLANT PRODUCTION primary production Primary productivity (Biology) Soil nutrients Synecology Terrestrial ecosystems turnover rate
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