Calcium Dynamics in Land Gastropods

The Crystalline Style in Gastropods

Land Use Dynamics in the Brazilian Amazon

The articles presented in this special issue of Ecological Economics address the important theme of land use dynamics as it pertains to the Brazilian Amazon. Much environmental change is an ecological artifact of human agency, and such agency is often manifested in land use impacts, particularly in tropical areas. The critical problem of tropical deforestation is but one example of a land use d...

Dynamics of calcium sparks and calcium leak in the heart.

We present what we believe to be a new mathematical model of Ca(2+) leak from the sarcoplasmic reticulum (SR) in the heart. To our knowledge, it is the first to incorporate a realistic number of Ca(2+)-release units, each containing a cluster of stochastically gating Ca(2+) channels (RyRs), whose biophysical properties (e.g., Ca(2+) sensitivity and allosteric interactions) are informed by the l...

The Geometry of Coiling in Gastropods.

3 Cole, L. J., W. E. Davis, R. M. Garver, and V. J. Rosen, Jr., Transpl. Bull., 26, 142 (1960). 4 Santos, G. W., R. M. Garver, and L. J. Cole, J. Nat. Cancer Inst., 24, 1367 (1960). I Barnes, D. W. H., and J. F. Loutit, Proc. Roy. Soc. B., 150, 131 (1959). 6 Koller, P. C., and S. M. A. Doak, in "Immediate and Low Level Effects of Ionizing Radiations," Conference held in Venice, June, 1959, Spec...

Developmental shifts and species selection in gastropods.

The fossil record of marine gastropods has been used as evidence to support the operation of species selection; namely, that species with limited dispersal differentially increase in numbers because they are more likely to speciate than widely dispersing species. This conclusion is based on a tacit phylogenetic assumption that increases in species with limited dispersal are solely the result of...