NRC 261 Lecture Notes - Rangeland, Overgrazing, List Of Domesticated Animals

• School: UMASS-Amherst
• Department: Natural Resources Conservation
• Course: NRC 261
• Professor: Todd Fuller

Document Summary

Ecological factor that has greatest impact: growing points at or below ground level. 3. regrow rapidly fire removes little growth it changes plant composition it may kill wildlife directly(burned up) and indirectly(leave and die) increase nutrient content. People purposely burn it to get nutrients from regrowth and rain. More food because of increase nutrients rangeland grazers- deer, prairie dogs, pronghorns all have increased food availability. Black footed ferrets eat prairie dogs and bison make vegetation shorter that the prairie dogs like. Grazers zebra, wildebeest and gazelle utilize different sources so they can co exist( they can not eat the same things) 1: change in species composition, less ground cover. 4: desertification, changes in mammal and bird composition. They do not eat as much as another species does, spread out between shrubs, grass and forbs. Question- people could help restore grassland by eating bison and eating less domestic grazers.