I am interested in learning how to estimate animal populations. What methods are used, and how do scientists go about doing this?
Figuring out ways to estimate animal population sizes and their trends involves a lot of research time at the USGS Patuxent Wildlife Research Center.
Imperiled Species is a general term used to identify species and populations of animals and plants that are in decline and may be in danger of extinction.
The Gap Analysis Program (GAP) is a state-based cooperative effort to map major indicators of biodiversity over states, along with the existing network of conservation lands.
A cluster of sick or dead animals in an area may indicate a wildlife disease of concern.
Visit the USGS National Wildlife Health Center (NWHC) to learn more about specific
Which elements are beneficial to wildlife, which are harmful, and how do they get into our environment?
Understanding our fragile environment often begins with recognition of the importance of certain elements, such as zinc and iron, in relation to animals and plants.
USGS scientists are collaborating with university, State, and Federal groups on a number of studies. Ecological studies focus on forage availability, habitat use, and bison population dynamics.
The American crocodile (Crocodylus acutus) lives in several places within the Americas, including Mexico, Central and South America, the Caribbean, and south Florida.