Results 31 to 40 of about 431,311 (201)
Conversion of extensive shrubsteppe communities to cropland has greatly reduced the habitat available to grassland‐ and sagebrush‐obligate birds in the Intermountain West of the United States.
W. Matthew Vander Haegen +3 more
doaj +1 more source
The Conservation Reserve Program and Grassland Birds
Several bird species that breed in the temperate grasslands of North America, many of which winter in the Neotropics, declined in abundance during the past quarter century. The Lark Bunting (see Table 1 for scientific names) and Grasshopper Sparrow, as examples, declined by about half during that period, as indexed by the U.S. Fish and Wildlife Service'
Johnson, Douglas H, Schwartz, Michael D
openaire +2 more sources
Exploring nest destruction and bird mortality in mown Mediterranean dry grasslands: an increasing threat to grassland bird conservation [PDF]
In recent years, haying has extended to Iberian Mediterranean dry grasslands potentially impacting on grassland bird ecology. We evaluated the impact of haying on a grassland bird community of South Portugal. Our main goals were: (1) to investigate the exposure of different species to haying, (2) to investigate potential removal of nests and dead birds
Faria, Nuno +2 more
openaire +2 more sources
Stopover Biology of Grassland Birds at Restored Tallgrass Prairies
Migration is an energetically expensive but critical part of the annual cycle of migrant birds. Grassland birds are experiencing the greatest population declines of any bird guild, likely because of conversion of grassland habitats to agriculture ...
West, Amy C
core +1 more source
This study selected nine typical urban lake-wetlands in Daqing as the research object, and analyzed the key factors influencing diversity of the lake-wetland bird based on GIS technology and the field investigation.
Tianyi Chen +5 more
doaj +1 more source
Understanding the influence of landscape composition on grassland bird habitat use is vital for predicting their fate in heavily fragmented ecosystems.
Clara Trofino-Falasco +10 more
doaj +1 more source
Habitat fragmentation is considered one of the most severe threatening factors for global biodiversity. Here we assessed, how local and landscape scale environmental variables, such as fragment size (small vs. large) and landscape configuration (measured
Fabio Marcolin +3 more
doaj +1 more source
Habitat Acquisition Strategies for Grassland Birds in an Urbanizing Landscape [PDF]
Habitat protection for grassland birds is an important component of open space land acquisition in suburban Chicago. We use optimization decision models to develop recommendations for land protection and analyze tradeoffs between alternative goals.
Stephanie A, Snyder +3 more
openaire +2 more sources
The bird communities of three disused quarries on the Magnesian limestone of Durham county [PDF]
In order to assess the ornithological importance of three disused quarries on the Magnesian Limestone escarpment in Durham county the distribution and abundance of the breeding birds were examined using the CBC technique.
Underhill, Mark
core
Keystone species are critical to maintaining ecological relationships and ecosystem functioning around the world. Prairie dogs (Cynomys sp.) are a genus of colonial keystone species endemic to North American grasslands that modify bird community ...
R. Andrew Dreelin +2 more
doaj +1 more source

