Results 171 to 180 of about 81,384 (353)

Estimating red deer Cervus elaphus population density using drones in a steep and rugged terrain

Wildlife Biology, EarlyView.
Precise and accurate information about population density, crucial for wildlife management, is difficult to obtain for elusive species living in dense forests or steep and inaccessible terrain. Using unmanned aerial vehicles (UAVs), we developed a method for obtaining absolute population estimates of ungulates living in steep, rugged, and partly ...
Julie Bommerlund, Torbjørn Ergon, Simon Filhol, Atle Mysterud   +3 more
wiley   +1 more source

Investigating adaptation to environmental variability in forest trees through molecular phylogenetic analysis. [PDF]

PLoS One
Garosi C, Vettori C, Ferrante R, Paffetti D.   +3 more
europepmc   +1 more source

Abundance and occupancy trends of sooty grouse in western Oregon: determining best modeling practices by comparing observed and simulated data

Wildlife Biology, EarlyView.
Sooty grouse Dendragapus fuliginosus are large game birds that occupy montane forests in the Pacific Northwest, USA. These forests have been altered by human activities, which have been shown to have both positive and negative impacts on local populations.
Sarah J. K. Frey, Kelly M. Walton, Mikal L. Cline, Lindsey E. Sanders, Jonathan B. Dinkins   +4 more
wiley   +1 more source

Somatic Embryogenesis of Selected <i>Pinus</i> Species: Developmental Stages of <i>Pinus peuce</i> and <i>Pinus heldreichii</i>. [PDF]

Plants (Basel)
Stojičić D, Čokeša V, Marković M, Radulović O, Uzelac B.   +4 more
europepmc   +1 more source

Incidence and effects of endemic populations of forest pests in young mixed-conifer forests of the Sierra Nevada [PDF]

, 1992
Carroll B. Williams, David L. Azuma, George T. Ferrell   +2 more
openalex   +1 more source

Passive acoustic monitoring with AI‐based detection and identification reveal sooty grouse hooting patterns in western Oregon

Wildlife Biology, EarlyView.
Many bird species are monitored using auditory point count surveys during the breeding season. Autonomous recording units (ARUs) can be used to better understand the daily and seasonal timing of when a species is vocalizing, which can help align surveys with the time period when the maximum number of individuals are present. We used ARUs to improve our
K. M. Walton, S. J. K. Frey, C. E. Christensen, M. L. Cline, L. E. Gramberg, J. B. Dinkins   +5 more
wiley   +1 more source

Forest Bird Abundance Is Linked to the Interactions Between Forest Characteristics and Species Ecological Traits: Implications for Forest Management. [PDF]

Ecol Evol
Szarvas F, Michálek J, Vermouzek Z, Voříšek P, Hanzelka J, Reif J.   +5 more
europepmc   +1 more source

Damage to first-year conifers under three livestock grazing intensities in Idaho /

, 1987
James L. Kingery, Russell T. Graham, United States., Jeffrey S. White   +3 more
openalex   +2 more sources

Born to die: pack and population level estimates of wolf pup survival and recruitment in the Greater Voyageurs Ecosystem

Wildlife Biology, EarlyView.
Wolf pup Canis lupus survival is a key driver of wolf population dynamics that remains poorly understood, especially in forested systems, because wolf pups are difficult to monitor. We used a combination of pup counts at dens and remote camera observations to estimate annual survival and recruitment of wolf pups in the Greater Voyageurs Ecosystem, MN ...
Andrea Hynes, Thomas D. Gable, Austin T. Homkes, Joseph K. Bump, John G. Bruggink   +4 more
wiley   +1 more source

Differential Performance of Distribution Shifts Between Endangered Coniferous and Broad-Leaved Tree Species in Subtropical China Under Climate Change. [PDF]

Plants (Basel)
Miao J, Xu Y, Ferguson DK, Yang Y.
europepmc   +1 more source