Background The principle that a single large habitat patch should hold more species than
several small patches totalling the same area (SL> SS) is used by conservation agencies to …

Ecology and natural history have a long tradition of interest in the spatial patterning and
geographic distribution of organisms. The latitudinal and altitudinal distribution of vegetative …

Disturbance is an important component of many ecosystems, and variations in disturbance
regime can affect ecosystem and community structure and functioning. The “intermediate …

The first photographs of the Earth to be taken from outer space are said to have had a
profound influence on how humanity perceives its place in the Universe. They provided a …

While most efforts at biodiversity conservation have focused primarily on protected areas
and reserves, the unprotected lands surrounding those area—the" matrix"—are equally …

We reviewed empirical data and hypotheses derived from demographic, optimal foraging,
life-history, community, and biogeographic theory for predicting the sensitivity of species to …

Population viability analysis (PVA) is a process. It entails evaluation of data and models for a
population to anticipate the likelihood that a population will persist for some arbitrarily …

Nearly 25% of the estimated 250 000 spec cular plants in the world may become exti the
next 50 yr (Raven 1987), and 22% ofvas. species in the United States are currently vation …

Some theories and experimental studies suggest that areas of low plant species richness
may be invaded more easily than areas of high plant species richness. We gathered nested …

This paper develops a spatial hedonic model to explain residential values in a region within
a 30-mile radius of Washington DC. Hedonic models of housing or land values are …