Populations of rodents isolated on islads often show systematic differences in demography,
reproduction, behavior, and morphology when compared to mainland populations. These …

Modern population biology arises from the coming together of what were previously
independent clusters of more or less co herent theory. Population genetics and population …

1. There is a limit to the similarity (and hence to the number) of competing species which can
coexist. The total number of species is proportional to the total range of the environment …

JN THE BOOKSTORES of my youth it was common to find titles that included the term"
foundations of science." These were not books about science at all but about logic, heirs of …

Scientists act within a social context and from a philosophical perspective that is inherently
political. Whether they realize it or not, scientists always choose sides. The Dialectical …

Professor Levins, one of the leading explorers in the field of integrated population biology,
considers the mutual interpenetration and joint evolution of organism and environment …

Economically important pests usually attack a crop or group of crops over a wide region in
which there are geographic, local, and temporal variations in the environment. Effectiveness …

(We have included the equations for dR1/dt and dR2/dt for completeness; actually, theyare
not needed in the following analysis.) Here the c's and d's are the threshold densities of …

Environmental scientists play a key role in society's responses to environmental problems,
and many of the studies they perform are intended ultimately to affect policy. The …

A community which would not reach a stable equilibrium may nevertheless persist if there is
temporal variation and nonlinear dynamics. A procedure is introduced for taking time …