Partial Wave Formation in Old-Growth Nothofagus Forests on Tierra del Fuego, Argentina

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Abstract
Partial waves, a more subtle and less-organized version of the classic Abies-type waves, are described for old-growth Nothofagus forests in the interior of Tierra del Fuego, Argentina. Partial waves exhibit the same downwind progression of mortality, with gradients of tree size and age noticeable for > 180 m, but unlike Abies waves and waves in some coastal stands of Nothofagus, partial waves appear to be the result of localized, stochastic disturbances, and they do not develop the highly organized, cyclical pattern of full waves. Partial waves may expand episodically in response to periodic, southwesterly windstorms, and do not appear to be related to directional, stress-related dieback.

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