Gunnison Sage-Grouse (Centrocercus minimus) is a species of concern for which little demographic information exists. To help fill this information gap, we investigated factors affecting nest success in two populations of Gunnison Sage-Grouse. We assessed the relative effects of (1) vegetation characteristics (e.g., shrub height, shrub cover, grass cover, and grass height), (2) temporal factors (e.g., year, timing of incubation initiation, and nest age), (3) precipitation, and (4) age of the nesting female (yearling or adult) on nest success rates. We found 177 nests in the Gunnison Basin population (that contains 85-90% of the species) from 2005-2010 and 20 nests in the San Miguel population (that contains < 10% of the species) from 2007-2010. Temporal factors had the greatest impact on nest success compared to vegetation characteristics, precipitation, and female age. Nest success varied considerably among years ranging from 4.0%-60.2% in Gunnison Basin and from 12.9%- 51.9% in San Miguel. Nests that were initiated earlier in the breeding season had higher nest success (at least one egg hatches). Daily nest survival rates decreased during the course of incubation. None of the vegetation characteristics we examined were strongly related to nest success.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4542206 | PMC |
| http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0136310 | PLOS |
Publication Analysis
Top Keywords
Similar Publications
Presence and potential impact of anthropogenic nesting materials on a colonial breeding waterbird.
Sci Total Environ
January 2025
Dep. Biologia & CESAM - Centre for Environmental and Marine Studies, Universidade de Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; South Iceland Research Centre, University of Iceland, Lindarbraut 4, 840-IS Laugarvatn, Iceland.
Despite the vital importance of wetlands globally, these habitats have increasingly received anthropogenic materials, such as plastics, which can impact the wildlife these habitats support. Despite commonly found in the nests of Eurasian spoonbill (Platalea leucorodia), the presence of such materials has never been quantified. Here, we monitored the occurrence of anthropogenic nesting materials (ANM) in spoonbill nests in the Camargue wetland in Southern France during two breeding seasons (2021-2022).
View Article and Find Full Text PDFCosts and benefits of maternal nest choice: Trade-offs between brood survival and thermal stress in bees.
Ecology
January 2025
Department of Biological Sciences, Brock University, St. Catharines, Ontario, Canada.
Optimal nest site selection is crucial in animals whose offspring are completely dependent on the shelter of a nest. Parental decisions influencing nest thermal conditions are particularly important because temperature strongly influences juvenile activity, metabolism, growth, developmental rate, survival, and adult body size. In small ectotherms such as bees, maternal decisions to nest in sun-exposed or shady sites can lead to marked differences in thermal microenvironments inside nests.
View Article and Find Full Text PDFThe Influence of Migration Timing and Local Conditions on Reproductive Timing in Arctic-Breeding Birds.
Ecol Evol
January 2025
Wildlife Research Division Environment and Climate Change Canada Ottawa Ontario Canada.
For birds breeding in the Arctic, nest success is affected by the timing of nest initiation, which is partially determined by local conditions such as snow cover. However, conditions during the non-breeding season can carry over to affect the timing of breeding. We used tracking and breeding data from 248 individuals of 8 species and subspecies of Arctic-breeding shorebirds to estimate how the timing of nest initiation is related to local conditions like snowmelt phenology versus prior conditions, measured by the timing and speed of migration.
View Article and Find Full Text PDFSweating the small stuff: microclimatic exposure and species habitat associations inform climate vulnerability in a grassland songbird community.
Biol Lett
January 2025
Department of Forest and Wildlife Ecology, University of Wisconsin-Madison,1630 Linden Drive, Madison, WI 53706, USA.
Assessment of species' vulnerability to climate change has been limited by mismatch between coarse macroclimate data and the fine scales at which species select habitat. Habitat mediates climate conditions, and fine-scale habitat features may permit species to exploit favourable microclimates, but habitat preferences can also constrain their ability to do so. We leveraged fine-resolution models of near-surface temperature and humidity in grasslands to understand how microclimates affect climatic exposure and demographics in a grassland bird community.
View Article and Find Full Text PDFCoexisting pilonidal sinus and anal fistula: Successful management with minimal invasive Kshara Karma Technique and Ksharasutra therapy- A case report.
J Ayurveda Integr Med
January 2025
Shalya Tantra Department, National Institute of Ayurveda, Deemed to Be University, Jaipur, Rajsthan, 302002, India.
Pilonidal sinus (PNS) is a nest of hair which typically presents as pits, pus discharge, and an abscess at the natal cleft region. In rare conditions where pilonidal abscess is not drained properly, it progresses posteriorly and reaches anal canal, eventually coexisting with anal fistula. Both are associated with a high recurrence rate despite surgical management.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!