Ecology

An Introduction to Population Biology
Populations are groups of individuals belonging to the same species that live in the same region at the same time. Populations, like individual organisms, have unique attributes.

Animals and Their Environment
A first step to understanding individual animals, and in turn populations of animals, is to understand the relationship they have with their environment. The environment in which an animal lives is referred to as its habitat.

Animals on the Edge
At the edges of developed areas, where natural habitats meet human habitats, animals are forced to undergo significant changes to survive and adapt. This article looks at what happens to animals in edge habitats and what it means for the future of our wildlands.

Communities and Ecosystems
The natural world is characterized by many complex interactions and relationships between animals, plants, and their environment. Individual belong, in turn, to populations, species, communities, and ecosystems.

Communities and Ecosystems
The natural world is characterized by many complex interactions and relationships between animals, plants, and their environment. Individual belong, in turn, to populations, species, communities, and ecosystems.

How Do Species Interact?
Wildlife species interact with each other in numerous, complex ways. Fortunately, we can make some general statements about these interactions.

What is a Keystone Species?
A keystone species is a species that plays a critical role in maintaining the structure of an ecological community and whose impact on the community is greater than would be expected based on its relative abundance or total biomass.