More information:

HilleRisLambers, R., Rietkerk, M., van der Bosch, F., Prins, H.H.T. and de Kroon, H. 2001. Vegetation pattern formation in semi-arid grazing systems. Ecology, 82(1): 50-61


Description:

Vegetation pattern formation in semi-arid grazing systems.

Summary / Notes:

Hypotheses about the origin of vegetation pattern formation in semi-arid areas around the world almost all include a common feature of semi-arid areas: the presence of a positive feedback between plant density and water infiltration. We investigate whether this positive feedback and the spatial redistribution of runoff water are sufficient to explain vegetation pattern formation. For this purpose, we analyze a spatially explicit model consisting of partial differential equations using a method for demonstrating pattern formation (Turing analysis). Our analysis reveals that pattern formation can occur in semi-arid areas given only the positive feedback between plant density and local water infiltration coupled with the spatial redistribution of runoff water. Thus, slope and underlying heterogeneity are not essential conditions. Keywords: grazing, herbivory, patchiness, plant dispersal, plant–soil interaction, positive feedback, runoff, semi-arid grazing systems, spatially explicit model, Turing analysis, vegetation patterns.

Year: 2001

Type: Journal Article

Origin: DRFN DLIB

URL: http://www.jstor.org/stable/2680085


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Dames, R. 2009. Grass fed beef and the controlled fodder flow grazing management strategy, a model for the production of super healthy red meat for the Arid and Semi-Arid regions of Southern Africa. 13th Namibian Rangeland Forum - The role of biodiversity in rangeland management and policy, Neudamm Faculty of Agriculture and Natural Resources, Windhoek, Dates: 27-29 October 2009
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