RT Journal Article
T1 Scaling of population resilience with dispersal length and habitat size
A1 Crespo Miguel, Rodrigo
A1 Jarillo, Javier
A1 Cao García, Francisco Javier
AB Environmental fluctuations can create population-depleted areas and even extinct areas for the population. This effect is more severe in the presence of the Allee effect (decreasing growth rate at low population densities). Dispersal inside the habitat provides a rescue effect on population-depleted areas, enhancing the population resilience to environmental fluctuations. Habitat reduction decreases the effectiveness of the dispersal rescue mechanism. We report here how the population resilience to environmental fluctuations decreases when the dispersal length or the habitat size are reduced. The resilience reduction is characterized by a decrease of the extinction threshold for environmental fluctuations. The extinction threshold is shown to scale with the ratio between the dispersal length and the scale of environmental synchrony, i.e. it is the dispersal connection between non-environmentally-correlated regions that provides resilience to environmental fluctuations. Habitat reduction also decreases the resilience to environmental fluctuations, when the habitat size is similar to or smaller than the characteristic dispersal distances. The power laws of these scaling behaviors are characterized here. Alternative scaling functions with spatial scales of population synchrony are found to fit the simulations worse. These results support the dispersal length as the critical scale for extinction induced by habitat reduction.
PB IOP Publishing
YR 2022
FD 2022-02-01
LK https://hdl.handle.net/20.500.14352/105480
UL https://hdl.handle.net/20.500.14352/105480
LA eng
NO Crespo-Miguel, R., Jarillo, J., & Cao-García, F. J. (2022). Scaling of population resilience with dispersal length and habitat size. Journal of Statistical Mechanics: Theory and Experiment, 2022(2), 023501.
NO Se deposita la versión postprint del artículo
NO European Regional Development Fund
NO Ministerio de Economía y Competitividad (España)
NO European Commission
NO European Chemical Industry Council
NO National Fund for Scientific Research
DS Docta Complutense
RD 17 abr 2025