TY  - JOUR
A1  - Martin, Benjamin T.
A1  - Czesny, Sergiusz
A1  - Wahl, David H.
A1  - Grimm, Volker
T1  - Scale-dependent role of demography and dispersal on the distribution of populations in heterogeneous landscapes
JF  - Oikos
N2  - Both dispersal and local demographic processes determine a population's distribution among habitats of varying quality, yet most theory, experiments, and field studies have focused on the former. We use a generic model to show how both processes contribute to a population's distribution, and how the relative importance of each mechanism depends on scale. In contrast to studies only considering habitat-dependent dispersal, we show that predictions of ideal free distribution (IFD) theory are relevant even at landscape scales, where the assumptions of IFD theory are violated. This is because scales that inhibit one process, promote the other's ability to drive populations to the IFD. Furthermore, because multiple processes can generate IFDs, the pattern alone does not specify a causal mechanism. This is important because populations with IFDs generated by dispersal or demography respond much differently to shifts in resource distributions.
Y1  - 2016
U6  - https://doi.org/10.1111/oik.02345
SN  - 0030-1299
SN  - 1600-0706
VL  - 125
SP  - 667
EP  - 673
PB  - Wiley-Blackwell
CY  - Hoboken
ER  -