Results 31 to 40 of about 431,311 (201)

Avian abundance and reproductive success in the intermountain west: Local‐scale response to the conservation reserve program

open access: yesWildlife Society Bulletin, 2015
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

open access: yesConservation Biology, 1993
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]

open access: yesEuropean Journal of Wildlife Research, 2016
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

open access: yes, 2020
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

The diversity of birds in typical urban lake-wetlands and its response to the landscape heterogeneity in the buffer zone based on GIS and field investigation in Daqing,China

open access: yesEuropean Journal of Remote Sensing, 2020
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

Landscape characteristics influencing habitat use of grassland birds in the Pampas ecoregion of Argentina

open access: yesAvian Conservation and Ecology
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

Fragment connectivity shapes bird communities through functional trait filtering in two types of grasslands

open access: yesGlobal Ecology and Conservation, 2021
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]

open access: yesEnvironmental Management, 2007
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]

open access: yes, 1992
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 effects of prairie dogs (Cynomys spp.) on grassland birds: Current knowledge and future directions

open access: yesConservation Science and Practice
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

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