Results 1 to 10 of about 1,308 (108)

Visibility bias for sage‐grouse lek counts

open access: yesWildlife Society Bulletin, 2017
Declining populations of greater sage‐grouse (Centrocercus urophasianus; hereafter, sage‐grouse) necessitate accurate estimates of population trends. The most widespread approach to monitoring sage‐grouse populations involves counting males attending ...
Edward O Garton
exaly   +3 more sources

Greater sage‐grouse male lek counts relative to a wind energy development

open access: yesWildlife Society Bulletin, 2017
Wind energy development is an emerging source of anthropogenic disturbance that could affect greater sage‐grouse (Centrocercus urophasianus; sage‐grouse) populations.
Trent Mcdonald, Jeffrey Beck
exaly   +3 more sources

Improving population size estimation at western capercaillie leks: lek counts versus genetic methods

open access: yesJournal of Avian Biology
The western capercaillie Tetrao urogallus, hereafter capercaillie, is the largest galliform bird present in the boreal and montane forests of the Western Palearctic.
Jeus María Pérez Jiménez   +2 more
exaly   +4 more sources

Using an individual-based model to assess common biases in lek-based count data to estimate population trajectories of lesser prairie-chickens.

open access: yesPLoS ONE, 2019
Researchers and managers are often interested in monitoring the underlying state of a population (e.g., abundance), yet error in the observation process might mask underlying changes due to imperfect detection and availability for sampling.
Beth E Ross   +2 more
doaj   +3 more sources

Comparison between lek counts and bioacoustic recording for monitoring Western Capercaillie (Tetrao urogallus L.) [PDF]

open access: yesJournal of Ornithology, 2019
Bioacoustics is the study of animal sounds. The importance of bioacoustics for biological research and the survey and monitoring of bird populations is becoming increasingly recognized. This is particularly the case for the capture of long-term data on rare species that are prone to disturbance or are otherwise difficult to survey.
CARLOS Abrahams
exaly   +3 more sources

Can Reliable Sage-Grouse Lek Counts Be Obtained Using Aerial Infrared Technology?

open access: yesJournal of Fish and Wildlife Management, 2013
Abstract More effective methods for counting greater sage-grouse (Centrocercus urophasianus) are needed to better assess population trends through enumeration or location of new leks. We describe an aerial infrared technique for conducting sage-grouse lek counts and compare this method with conventional ground-based lek count methods.
Peter Coates, Coates Peter S
exaly   +2 more sources

Volunteer Observer Bias and Sharp-Tailed Grouse Lek Counts in the Upper Midwest

open access: yesJournal of Fish and Wildlife Management, 2018
Abstract For most species of prairie grouse Tympanuchus spp. standardized monitoring protocols do not exist across adjoining jurisdictions. For instance, researchers monitor relatively small and disjunct populations of prairie sharp-tailed grouse Tympanuchus phasisanellus campestris in Michigan, Wisconsin, and Minnesota using ...
R Gregory Corace
exaly   +2 more sources

Trends in greater sage‐grouse lek counts relative to existing wind energy development in Wyoming

open access: yesWildlife Society Bulletin
Rapid increases in wind energy development globally highlight the need to evaluate how electricity generation may impact wildlife. The greater sage‐grouse (Centrocercus urophasianus; hereafter, sage‐grouse) has experienced range‐wide population declines,
Kurt T. Smith   +3 more
doaj   +2 more sources

Combined effects of energy development and disease on greater sage-grouse. [PDF]

open access: yesPLoS ONE, 2013
Species of conservation concern are increasingly threatened by multiple, anthropogenic stressors which are outside their evolutionary experience. Greater sage-grouse are highly susceptible to the impacts of two such stressors: oil and gas (energy ...
Rebecca L Taylor   +3 more
doaj   +1 more source

Spatial heterogeneity in response of male greater sage-grouse lek attendance to energy development. [PDF]

open access: yesPLoS ONE, 2014
Landscape modification due to rapidly expanding energy development, in particular oil and gas, in the westernUSA, have prompted concerns over how such developments may impact wildlife.
Andrew J Gregory, Jeffrey L Beck
doaj   +1 more source

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