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Effects of Human Disturbance on Tropical Montane Epiphyte Assemblages

Effects of Human Disturbance on Tropical Montane Epiphyte Assemblages

Studies from the Ecuadorian Andes

Suedwestdeutscher Verlag fuer Hochschulschriften ( 17.04.2010 )

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The present dissertation aims at contributing to our understanding of the processes that determine epiphyte diversity in anthropogenic landscapes. At a dry forest site, epiphytic bryophytes responded sensitively to human disturbance, but vascular epiphytes did not. At a moist forest site, vascular epiphyte assemblages on isolated remnant trees were impoverished markedly and strongly biased to xerotolerant taxa. Field-experimental work at this site could show that this was related to 1) strongly increased mortality of established plants on isolated remnant trees following their isolation in clear-cuts, and 2) reduced and compositionally biased establishment on isolated trees. Evidence is presented to suggest that growth conditions (especially microclimate) are a more decisive predictor of epiphyte communities in disturbed habitats at these sites than dispersal constraints. The response of epiphyte communities to disturbance may further vary with mesoclimate.

Buch Details:

ISBN-13:

978-3-8381-1646-4

ISBN-10:

3838116461

EAN:

9783838116464

Buchsprache:

English

von (Autor):

Florian A. Werner

Seitenanzahl:

164

Veröffentlicht am:

17.04.2010

Kategorie:

Ökologie