Results 11 to 20 of about 13,723 (153)

Comparison of in‐person and remote camera lek surveys for prairie grouse (Tympanuchus spp.)

open access: yesWildlife Society Bulletin, 2023
In‐person lek count surveys are commonly used for estimating population size and trends for prairie grouse. However, the emergence of noninvasive camera trap survey methods holds promise for more cost‐effective and precise estimates of lekking species ...
Jennifer L. Stenglein   +8 more
doaj   +1 more source

Estimating capercaillie Tetrao urogallus population size in Scotland from annual leks and counts of broods over the period 2010–2020

open access: yesWildlife Biology, 2023
The population size of capercaille Tetrao urogallus in Scotland was estimated from annual counts of males at 151 known spring lek sites and 45 counts of males, females and their broods in August during the period 2010–2020, combined with published survival estimates.
David Baines, Nicholas J. Aebischer
openaire   +2 more sources

Local and population-level responses of Greater sage-grouse to oil and gas development and climatic variation in Wyoming [PDF]

open access: yesPeerJ, 2018
Background Spatial scale is important when studying ecological processes. The Greater sage-grouse (Centrocercus urophasianus) is a large sexually dimorphic tetraonid that is endemic to the sagebrush biome of western North America.
Rob R. Ramey II   +2 more
doaj   +2 more sources

Assessment of lesser prairie‐chicken translocation through survival and lek surveys

open access: yesWildlife Society Bulletin, 2023
Translocation is a management tool used to restore or augment wildlife populations, but outcomes of translocations are often poorly documented and can have varying levels of success for improving wildlife population declines.
Elisabeth C. Teige   +8 more
doaj   +1 more source

Influence of environmental change, harvest exposure, and human disturbance on population trends of greater sage-grouse.

open access: yesPLoS ONE, 2021
Hunter harvest of greater sage-grouse (Centrocercus urophasianus; hereafter "sage-grouse") has been regulated by wildlife agencies during most of the past century.
Jonathan B Dinkins   +2 more
doaj   +1 more source

The average number of critical rank-one approximations to a tensor [PDF]

open access: yes, 2014
Motivated by the many potential applications of low-rank multi-way tensor approximations, we set out to count the rank-one tensors that are critical points of the distance function to a general tensor v.
Draisma, Jan, Horobet, Emil
core   +10 more sources

Plethysm and lattice point counting [PDF]

open access: yes, 2015
We apply lattice point counting methods to compute the multiplicities in the plethysm of $GL(n)$. Our approach gives insight into the asymptotic growth of the plethysm and makes the problem amenable to computer algebra. We prove an old conjecture of Howe
Mateusz, Micha Lek, Thomas Kahle
core   +1 more source

Mapping oil and gas development potential in the US Intermountain West and estimating impacts to species. [PDF]

open access: yesPLoS ONE, 2009
BACKGROUND:Many studies have quantified the indirect effect of hydrocarbon-based economies on climate change and biodiversity, concluding that a significant proportion of species will be threatened with extinction.
Holly E Copeland   +4 more
doaj   +1 more source

Is scuba sampling a relevant method to study microhabitat in lakes? Examples and comparisons for three European species [PDF]

open access: yes, 2001
We compared fish microhabitat use patterns in the littoral zone of a lake using a new direct method (i.e. Point Abundance Sampling by Scuba, PASS) and the widely used Point Abundance Sampling by Electrofishing technique (PASE).
Brosse, Sébastien   +3 more
core   +2 more sources

Altering an extended phenotype reduces intraspecific male aggression and can maintain diversity in cichlid fish [PDF]

open access: yes, 2013
Reduced male aggression towards different phenotypes generating negative frequency-dependent intrasexual selection has been suggested as a mechanism to facilitate the invasion and maintenance of novel phenotypes in a population.
Croft, Guy E.   +2 more
core   +2 more sources

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