Filters: Tags: prairie wetlands (X)5 results (166ms)
Bird Behavior and Mortality in Relation to Power Lines in Prairie Habitats, North Dakota, 1981to1982
A biologist and field crew from Northern Prairie Wildlife Research Center observed bird flights at 7 study sites, twice weekly during two spring and two fall migration periods between April 3, 1981 and May 20, 1982. Study sites were located in south-central North Dakota in Barnes, Kidder, and Stutsman counties. The database includes flight observation's of bird species in the vicinity of power lines and transmission towers, number of birds in each flock, their reactions to power lines and transmission towers, weather conditions, and number of collisions.
Drying out of small prairie wetlands after conversion of their catchments from cultivation to permanent brome grass
Conclusions:Area requirements for wetland birds species vary depending on the degree of landscape heterogeneity and landscape pattern.Thresholds/Learnings:Black terns required 6.5 ha of suitable wetland habitat for nesting and foraging in heterogeneous landscapes, but required 15.4-32.6 ha in homogenous landscapes
A landscape approach to conserving wetland bird habitat in the prairie pothole region of eastern South Dakota.
Synopsis: Resource managers confronted with preserving ecosystems for prairie wetland birds in fragmented landscapes require landscape studies that direct conservation efforts over broad geographic regions. We investigated the role of local and landscape factors affecting habitat suitability by integrating remotely sensed wetland and land-cover data with wetland bird habitat models. We linked habitat models with locations of easement and fee-title wetlands to evaluate spatial location and extent of protected, suitable habitat. We also simulated impacts of the loss of small wetlands on suitability of larger wetlands for mobile species that use multiple wetlands. Lastly, we evaluated the efficacy of waterfowl habitat...