NEST SURVIVAL RELATIVE TO PATCH SIZE IN A HIGHLY FRAGMENTED SHORTGRASS PRAIRIE LANDSCAPE

@inproceedings{Skagen2005NESTSR,
  title={NEST SURVIVAL RELATIVE TO PATCH SIZE IN A HIGHLY FRAGMENTED SHORTGRASS PRAIRIE LANDSCAPE},
  author={Susan K. Skagen and Amy A. Yackel Adams and Rodney D. Adams},
  year={2005}
}
Abstract Understanding the influences of habitat fragmentation on vertebrate populations is essential for the protection and ecological restoration of strategic sites for native species. We examined the effects of prairie fragmentation on avian reproductive success using artificial and natural nests on 26 randomly selected, privately owned patches of shortgrass prairie ranging in size from 7 to 454 ha within a cropland matrix in Washington County, Colorado, summer 2000. Survival trends of… 

Land Use and Small Mammal Predation Effects on Shortgrass Prairie Birds

Abstract Grassland birds endemic to the central shortgrass prairie ecoregion of the United States have experienced steep and widespread declines over the last 3 decades, and factors influencing

Effects of fire and grazing on grasshopper sparrow nest survival

TLDR
The effects of the patch-burn grazing and a more traditional treatment on the nesting ecology of grasshopper sparrows in small grasslands located in southern Iowa are assessed and further investigation of heterogeneity management in fragmented landscapes is recommended to better understand how it affects biodiversity in relatively small management units that typify grassland habitats in the Midwest.

Nesting Success of Grassland Birds in Fragmented and Unfragmented Landscapes of North Central South Dakota

NESTING SUCCESS OF GRASSLAND BIRDS IN FRAGMENTED AND UNFRAGMENTED LANDSCAPES OF NORTH CENTRAL SOUTH DAKOTA Gillian M. Berman May 2007 Abstract. Decline of grassland bird species has frequently been

Effects of Fire and Grazing on Grasshopper

TLDR
Although survival rates were highest in patch-burn grazed pastures, multiple factors influenced grasshopper sparrow survival, and further investigation of heterogeneity management in fragmented landscapes is recommended to better understand how it affects biodiversity in relatively small management units that typify grassland habitats in the Midwest.

FRAGMENTION BY AGRICULTURE INFLUENCES REPRODUCTIVE SUCCESS OF BIRDS IN A SHRUBSTEPPE LANDSCAPE

TLDR
Simple models of population growth using landscape-specific fecundity and estimates of adult survival derived from return rates of banded male Sage Sparrows and Brewer's Sparrows suggest that fragmented shrubsteppe in Washington may be acting as a population sink for some species.

Bird Productivity and Nest Predation in Agricultural Grasslands

Effective conservation strategies for grassland birds in agricultural landscapes require understanding how nesting success varies among different grassland habitats. A key component to this is

Maximizing the effectiveness of grassland management for a grasshopper sparrow (Ammodramus savannarum) metapopulation

TLDR
Examination of the effect of increasing levels of hayfield enrollment on grasshopper sparrow population viability in an urbanizing region of New Jersey demonstrates that extinction risk can be reduced without having to protect or manage all remaining grassland habitat in the landscape.

Extremes of heat, drought and precipitation depress reproductive performance in shortgrass prairie passerines

Climate change elevates conservation concerns worldwide because it is likely to exacerbate many identified threats to animal populations. In recent decades, grassland birds have declined faster than

Video Surveillance of Nesting Birds

TLDR
Nesting activity of obligate grassland birds in three habitats [remnant prairie, cool-season grass Conservation Reserve Program (CRP) fields, and pastures] in southwest Wisconsin, 2002–2004 is quantified.

No evidence for observer effects on Lark Sparrow nest survival

TLDR
The results suggest that the nest-monitoring techniques used had no effect on Lark Sparrow nest success and, if true, nest survival of other songbirds in arid grasslands of the Great Plains may also be unaffected by cautious nest monitoring.

References

SHOWING 1-10 OF 66 REFERENCES

DOES HABITAT FRAGMENTATION INFLUENCE NEST PREDATION IN THE SHORTGRASS PRAIRIE?

Abstract We examined the effects of habitat fragmentation and vegetation structure of shortgrass prairie and Conservation Reserve Program (CRP) lands on predation rates of artificial and natural

EVIDENCE FOR EDGE EFFECTS ON MULTIPLE LEVELS IN TALLGRASS PRAIRIE

TLDR
It is argued that, based on edge avoidance behavior, “grassland-interior” species such as the Henslow's Sparrow respond to edge effects mainly by a decrease in density, whereas habitat generalists such asThe Dickcissel are affected mainly byA decrease in nesting success.

PREDATION ON REAL AND ARTIFICIAL NESTS IN SHRUBSTEPPE LANDSCAPES FRAGMENTED BY AGRICULTURE

TLDR
Increased predation by corvids and lower nest success in fragmented landscapes may have played a part in recent declines of some shrubsteppe birds, and future research should measure annual reproductive success of individual females and survival rates of juveniles and adults.

Effects of Prairie Fragmentation on the Nest Success of Breeding Birds in the Midcontinental United States

TLDR
Differences in nest-predation rates between large fragments and small fragments suggest that fragmentation of prairie habitats may be contributing to regional declines of grass- land birds and may require protection and restoration of large prairie areas.

Effects of prairie fragmentation on predation on artificial nests

TLDR
Proximity to woody cover had more influence on artificial-nest success than did tract size when both variates were incorporated in multiple logistic regression and log-linear models.

Nest predation and brood parasitism of tallgrass prairie birds

Rates of nest predation and brood parasitism on 5 bird species nesting in fragments of tallgrass prairies in Minnesota were affected by the size of the prairie fragment containing the nest, the

Nesting Success of a Neotropical Migrant in a Multiple‐Use, Forested Landscape

Abstract: We studied the nesting success of an individually marked population of Kentucky Warblers (Oporornis formosus), a species that nests in disturbed and undisturbed forests, in a heterogeneous,

Variation in top‐down control of avian reproductive success across a fragmentation gradient

TLDR
These findings suggest that another process -- perhaps differential survivorship or dispersal - yields reduced abundance of ground-nesting species in habitat fragments, which would reflect that the strength of top-down forces across a landscape varies with characteristics of predator and prey and their autecological responses to ecological gradients.

Nesting Success of Neotropical Migrant Songbirds in a Highly Fragmented Landscape

Abstract: Small forests in agricultural landscapes are generally thought to be population sinks where the nesting success of Neotropical migrant songbirds is too low to sustain populations. In 1996
...