The biogenic substrates evaluated here are sessile species and generate favorable internal spaces for exploitation by vagile
organisms, which search for the benefits described above.
By and large, this paper has been concerned with birds, vagile
organisms for which the issue of changing land use around protected areas seems especially relevant.
Among the vagile
benthic forms, the two main groups correspond to the Order Spirillinina (39%, mainly Spirillina and less commonly Conicospirillina) and the Order Textulariina (38%, mainly Reophax and Ammobaculites, with less abundant Ammodiscus, Redmondoides, Ammomarginulina, and Haplophragmoides).
At present, these ponds provide habitat for only the most abundant and vagile
species of anurans.
However, the fishes that were observed to move between these floating objects were juvenile carangids between 10 and 20 cm in length (Moser et al., 1998), whereas the fishes in the present study were generally much smaller and presumably less vagile
Adult insects, however, are vagile
and light traps only sample flying, positively phototaxic insects (Southwood 1966).
This is reflected in the distribution of sea urchins or other vagile
organisms that cannot withstand intense agitation.
Accordingly, fragmentation may indirectly facilitate the persistence of vagile
consumer species within landscapes by creating heterogeneity in the rate at which patches progress through succession.
These patterns probably result because small-seeded species produce more seeds, are more vagile
, and persist longer in seed banks than do large-seeded species.
Birds are more vagile
than mice, which might [ILLEGIBLE TEXT] by diffusing infected ticks into sites in which transmission is unlikely.
Therefore, when the frequency of unpatterned morphs becomes excessively high, bird predators may develop a search image for this morph and would select more strongly against it among the vagile
It will be interesting to see if the species extends its range northward from Tyler, which has an extensive nursery trade in roses and azaleas and could serve as a "distribution center" for this vagile
little amphibian in the future.