Patchy disturbance favours longer dispersal distance

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Patchy disturbance favours longer dispersal distance (EN)

Kallimanis, A. S. (EN)

Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιών (EL)
Kallimanis, A. S. (EN)

Question: How does the spatial pattern of habitat disturbance and availability affect the selection of dispersal distance? Modelling approach: We use ail individual-based simulation model. By looking at the outcome of competition between individuals using different dispersal distances, the model simulates the selection of dispersal distance. Both habitat and disturbance are spatially structured and can range from a purely random pattern, through a fractal to complete aggregation (a solid block). Conclusions: The disturbance regime affects the selection of dispersal distance more strongly than landscape pattern does. Spatial aggregation of disturbance favours the selection of longer dispersal distances. Lower habitat availability favours shorter dispersal distances. When disturbance is not highly autocorrelated, aggregation of suitable habitat favours shorter dispersal distances. (EN)

fractals (EN)

Evolutionary Ecology Research (EN)



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