Area requirements of grassland birds: a regional perspective.
Dates
Publication Date
2001
Citation
Johnson, Douglas H., and Igl, Lawrence D, 2001, Area requirements of grassland birds: a regional perspective.: The American Ornithologists Union 118, no. 1 (2001): 24-34.
Summary
Conclusions: When isolated, larger patch size correlates with higher species density and occurence in area-sensitive grassland birds Thresholds/Learnings: Synopsis: This paper examines the influence of landscape fragmentation and isolation of Conservation Reserve Program (CRP) grasslands on grassland breeding bird populations in the northern Great Plains states. The study explores the relationship between species occurrence and density, and patch size by tracking 15 bird species on 303 restored grassland areas. Locating CRP grassland fields near existing grasslands, or establishing one large CRP field rather than several small fields, benefits area-sensitive grassland bird species. Caveats: Inconsistent findings in area sensitivity [...]
Summary
Conclusions:
When isolated, larger patch size correlates with higher species density and occurence in area-sensitive grassland birds
Thresholds/Learnings:
Synopsis: This paper examines the influence of landscape fragmentation and isolation of Conservation
Reserve Program (CRP) grasslands on grassland breeding bird populations in the northern Great Plains
states. The study explores the relationship between species occurrence and density, and patch size by
tracking 15 bird species on 303 restored grassland areas. Locating CRP grassland fields near existing
grasslands, or establishing one large CRP field rather than several small fields, benefits area-sensitive
grassland bird species.
Caveats: Inconsistent findings in area sensitivity may be attributable to the following causes:
*Differences in study designs and analytic methods among studies result in inconsistencies
* Species may respond differently in different portions of their breeding range
* Variable responses to patch size are likely in landscapes with different amounts of suitable
habitat variation in the abundance of species in the region
Added to ScienceBase on Thu Feb 20 15:25:46 UTC 2014 by processing file <b>LandscapePattern_Database_5_9_AMENDED_MattsBibEdits_v2.xlsx</b> Augmented by Bray J. Beltrán Feb 16, 2015
