David W. Sample

TL;DR: In this paper, the authors suggest a regional approach to ensure that energy crop production will proceed in an ecologically and economically sustainable way, and suggest that three types of agricultural land be targeted for perennial biomass energy crops: (1) highly erodible land; (2) wetlands presently converted to agricultural uses; and (3) marginal agricultural land in selected regions.

TL;DR: The authors investigated the association of grassland birds with field-and landscape-level habitat variables in south-central Wisconsin during 1985-1987 and found that only landscape variables were associated with the density of bobolink (Dolichonyx oryzivorus), eastern meadowlark (Sturnella magna) and all birds that were grassland species of management concern.

TL;DR: Impacts of removing rows of trees and shrubs that intersected grasslands on potential nest predators and the three most abundant grassland bird species are measured at sites in Wisconsin, U.S.A.

TL;DR: In this article, the authors determined the densities of grassland birds in remnant prairie patches and Conservation Reserve Program (CRP) fields and compared those to managed agricultural habitat types (pastures, alfalfa hay and strip crop fields).