It is unlikely all male sage-grouse are detected during lek counts, which could complicate the use of lek counts as an index to population abundance. Understanding factors that influence detection probabilities will allow managers to more accurately estimate the number of males present on leks. We fitted 410 males with...
Declines in Greater Sage-Grouse (Centrocercus urophasianus, hereafter sage-grouse) populations could be attributed to low chick survival, which may be influenced by the availability of food and cover at sites used by females rearing broods. Habitat attributes important to broods may vary regionally; thus, it is necessary to understand factors affecting...
A market survey of aluminum users' purchasing
policies and the concept of opportunity costs are combined
in a quantitative decision model designed to
assist aluminum suppliers' efforts in directing products
and services improvements.
The opportunity cost, as the percentage of business
forgone, is determined for seven criteria representing
the products...
The 1989 Exxon Valdez oil spill was a major perturbation of nearshore habitats of Prince William Sound, a wintering area for harlequin ducks (Histrionicus histrionicus). This research was designed to evaluate harlequin duck population recovery from the oil spill from 1995 to 1998, using a demographic approach to assess both...
Greater sage-grouse Centrocercus urophasianus populations across North America have been declining due to degradation and fragmentation of sagebrush habitat. As part of a study quantifying greater sage-grouse demographics prior to construction of a wind energy facility, we estimated apparent net nest productivity and survival rate of chicks associated with radio-equipped...
Many low-income and first-generation community college students face disproportionate challenges in their quest for a college education. They typically balance multiple outside obligations, while being solely responsible for making these decisions without adequate knowledge, guidance, or support (Lyons, 2004). Many students begin college without ever having been responsible for their...