Hi, I am seeking some somewhat unusual metapopulation and/or island biogeographic data to test a hypothesis. I am looking for examples of species records (presence/absence) or richness records from species with active dispersal, and patches that vary in their distance from a 'mainland' or relatively large patch, as follows: At least some patches should be close enough to the large patch so as to make travel over the intervening distance relatively easy and risk-free (which might mean being very close), and some should be far enough away to make the distance quite difficult. (Obviously the absolute distances will depend on the species/taxon under consideration.)
An example might be understory birds in remnant forest patches adjacent to a large block on intact forest, where some patches were <=100m from the block, and others up to 1km or more. I am open with regards to taxon -- the only requirement is that it have active dispersal. If you have, or know of, examples like this, I would appreciate hearing from you, and will gladly explain what we are trying to do. Thanks, Gareth Russell NJIT/Rutgers
