Results 31 to 40 of about 136,603 (185)

Trappings of Success: Predator Removal for Duck Nest Survival in Alberta Parklands

open access: yesDiversity, 2020
Nest survival is most limited by nest predation, which often is increased by anthropogenic causes including habitat fragmentation, mesopredator release and predator subsidies.
Emily M. Blythe, Mark S. Boyce
doaj   +1 more source

Estimating direct and indirect effects of habitat structure on nesting field sparrows (Spizella pusilla) using structural equation models

open access: yesFrontiers in Ecology and Evolution, 2023
Due to consistent population declines across the continent, grassland birds have become a guild of high conservation and management interest. Despite a large number of studies investigating grassland bird habitat associations, we know relatively little ...
Alex Glass   +2 more
doaj   +1 more source

What makes a host profitable? Parasites balance host nutritive resources against immunity [PDF]

open access: yes, 2008
Numerous host qualities can modulate parasite fitness, and among these, host nutritive resources and immunity are of prime importance. Indeed, parasite fitness increases with the amount of nutritive resources extracted from the host body and decreases ...
Bize, P.   +3 more
core   +1 more source

Patterns in avian reproduction in the Prudhoe Bay Oilfield, Alaska, 2003–2019

open access: yesJournal of Avian Biology, 2023
The Arctic Coastal Plain is one of the most important avian breeding grounds in the world; however, many species are in decline. Arctic‐breeding birds contend with short breeding seasons, harsh climatic conditions, and now, rapidly changing, variable ...
Rebecca L. McGuire   +2 more
doaj   +1 more source

Age and sex-selective predation moderate the overall impact of predators [PDF]

open access: yes, 2014
© 2014 The Authors. Journal of Animal Ecology published by John Wiley & Sons Ltd on behalf of British Ecological Society. Acknowledgements: Thanks to J. Reid, S. Redpath, A.
Davison, Martin   +6 more
core   +5 more sources

Variability in Nest Survival Rates and Implications to Nesting Studies

open access: yesThe Auk, 1982
-We used four reasonably large samples (83-213) of Mallard (Anas platyrhynchos) and Blue-winged Teal (A. discors) nests on an interstate highway right-of-way in southcentral North Dakota to evaluate potential biases in hatch-rate estimates. Twelve consecutive, weekly searches for nests were conducted with a cable-chain drag in 1976 and 1977. Nests were
Klett, A. T., Johnson, Douglas H
openaire   +2 more sources

REPRODUCTIVE PARAMETERS OF RIO GRANDE WILD TURKEYS ON THE EDWARDS PLATEAU, TEXAS

open access: yesWildlife Society Bulletin, 2010
: Rio Grande wild turkey (Meleagris gallopavo intermedia) abundance has declined in portions of the Edwards Plateau of Texas since the late 1970s. Because reproductive performance influences population dynamics, our objectives were to evaluate how hen ...
Kyle B. Melton   +6 more
doaj   +1 more source

Do Different Plasticine Eggs In Artificial Ground Nests Influence Nest Survival?

open access: yes, 2012
Boly Inc.; 1.5 subprogram of the NKFP [3A/061/2004]
Purger, Jeno J.   +3 more
openaire   +3 more sources

Effects of oil and gas development on duck nest survival in the Western Boreal Forest

open access: yesAvian Conservation and Ecology
Nest survival drives population demographics of most avian species. Researchers and managers have focused studies on investigating nest success in association with climate, land use change (e.g., agriculture), and predators in the Prairie and Arctic ...
Matthew E Dyson   +2 more
doaj   +1 more source

Microhabitat Nest Cover Effect on Nest Survival of the Red-Crested Cardinal

open access: yesThe Wilson Journal of Ornithology, 2012
Abstract We evaluated the influence of microhabitat vegetation cover on Red-crested Cardinal (Paroaria coronata) nest survival in natural forests in central eastern Argentina by monitoring 106 nests for 1,262 exposure days. Daily nest survival rates increased with vegetation cover above the nest and decreased linearly as the breeding season progressed.
Segura, Luciano Noel   +2 more
openaire   +2 more sources

Home - About - Disclaimer - Privacy