Compendiums

Simple explanations to complex concepts
Selective harvest graphic showing spawning fish and harvested fish

Selectively Harvesting: does hunting and fishing change populations?

Around the world, people harvest fish and wildlife to make a profit, provide sustenance, and honor a cultural heritage. Harvest of wild animals occurs across a gradient of scale, from a single person hunting a white-tailed deer to fill their freezer with meat to the commercial process of harvesting thousands of fish at a time in the ocean. View details >

Ecology-Unmasked_directvectordisease

Disease and the wildlife-livestock interface: some animals should not touch

One of the biggest concerns with wildlife and livestock interacting with each other is the introduction of a deadly pathogen into a
naïve herd. How a disease is transmitted influences our management options for the disease. View details >

Ecology-Unmasked_breedingSpectrum

Kids ain't cheap: how do ungulates afford to reproduce?

The currency many mammals rely on to finance reproduction is energy from the food they eat. Although all ungulate moms need to eat for two (or sometimes three, or four), the timing of when they must obtain the calories differs depending on their strategy. View details >

Illustrations of elk horns, skull, and bighorn sheep skull with measurements

Records program of North America

The Harvest Records Project is focused on identifying the effects of harvest on horn size of mountain sheep. Hunting is an important part of wildlife management, but there is concern over how harvest might affect the size of horns and antlers of ungulate species over time. View details >