A5050405283- Avian ecology and behavior
- Rangeland and Wildlife Management
- Wildlife Ecology and Conservation
- Fire effects on ecosystems
- Ecology and Vegetation Dynamics Studies
- Animal Ecology and Behavior Studies
- Species Distribution and Climate Change
- Animal Vocal Communication and Behavior
- Animal Behavior and Reproduction
- Forest Ecology and Biodiversity Studies
- Plant and animal studies
- Forest Insect Ecology and Management
- Bee Products Chemical Analysis
- Economic and Environmental Valuation
- Bird parasitology and diseases
- Conservation, Biodiversity, and Resource Management
- Land Use and Ecosystem Services
- Tree-ring climate responses
- Environmental law and policy
- Cinema and Media Studies
- Yersinia bacterium, plague, ectoparasites research
- Genetic and phenotypic traits in livestock
- Engineering and Material Science Research
- Environmental and Social Impact Assessments
- Turfgrass Adaptation and Management
University of Regina
2006-2024
Environment and Climate Change Canada
2010-2024
Canadian Forest Service
2021
University of Saskatchewan
2014
North Carolina State University
2009
Water Security Agency
2003-2006
Liverpool John Moores University
1999
South Florida Water Management District
1998
Tharawal Aboriginal
1985
Identification of habitat features influencing reproduction and survival are essential for the management long-term viability grassland bird populations. I quantified vegetation structure at nests random sites in southern Saskatchewan, Canada, to determine which microhabitat important nest-site selection by Sprague's Pipit (Anthus spragueii), Savannah Sparrow (Passerculus sandwichensis), Baird's (Ammodramus bairdii), Chestnut-collared Longspur (Calcarius ornatus), Western Meadowlark...
Abstract Information on area sensitivity and effects of habitat fragmentation has come largely from forest tallgrass-prairie habitats. Research other ecosystems is required to determine whether the paradigm derived those studies applicable passerine communities elsewhere. I examined abundance occurrence nine species mixed-grass prairie passerines in southern Saskatchewan. conducted 190 point-counts 1996 1997 89 pastures ranging size 8 6,475 ha. Sprague's Pipit (Anthus spragueii), Baird's...
Oil and natural gas development has increased dramatically in native grasslands over the past 25 years. Some grassland songbirds are less abundant areas with oil development, but effects vary among species geographically within a species' range. The reproductive consequences of nesting unknown. We assessed how density success five songbird Alberta, Canada, varied distance to wells, gravel roads, trails, cover crested wheatgrass (Agropyron cristatum), an aggressive alien plant that often...
Abstract The absence of a rigorous mechanism for prioritizing investment in endangered species management is major implementation hurdle affecting recovery. Here, we present method strategies based on the likelihood achieving species’ recovery goals per dollar invested. We demonstrate our approach 15 listed under Canada's Species at Risk Act that co‐occur Southwestern Saskatchewan. Without management, only two have >50% probability meeting objectives; whereas, with 13 exceed threshold...
During 1996–2000, I studied the nesting ecology of Sprague's Pipits (Anthus spragueii), Clay-colored Sparrows (Spizella pallida), Savannah (Passerculus sandwichensis), Baird's (Ammodramus bairdii), Chestnut-collared Longspurs (Calcarius ornatus), and Western Meadowlarks (Sturnella neglecta) on 47 native mixed-grass prairie pastures in southern Saskatchewan. Predation was primary cause nest failure occurred at a similar frequency among six species. Nest success productivity varied years...
Abstract Identification of habitat features influencing reproduction and survival are essential for the management long-term viability grassland bird populations. I quantified vegetation structure at nests random sites in southern Saskatchewan, Canada, to determine which microhabitat important nest-site selection by Sprague's Pipit (Anthus spragueii), Savannah Sparrow (Passerculus sandwichensis), Baird's (Ammodramus bairdii), Chestnut-collared Longspur (Calcarius ornatus), Western Meadowlark...
Much of our current understanding the demographic effects habitat fragmentation on bird populations is derived from studies passerines in forests and tallgrass prairie surrounded by woody vegetation. We quantified grassland density, nest survival, productivity 41 native mixed-grass pastures during 1997-2000 southern Saskatchewan, Canada. Pastures ranged size 18 ha to 11,600 were typically agriculture (i.e., ranching annual cropping). Grassland did not respond strongly or uniformly patch...
North American temperate grasslands and the wildlife species they support are increasingly imperilled, largely due to habitat loss degradation. Most remaining prairie is privately managed supports livestock production. In Canada, voluntary stewardship preferred approach for protecting at risk on private lands under federal Species Risk Act (SARA). However, attitudes of land managers toward their willingness engage in poorly understood. With data from interviews with 42 producers...
Cultivation of native prairie was likely the primary cause historical declines grassland bird populations in North America, but increase natural gas development may be exacerbating those through habitat loss and degradation. We quantified abundance songbirds vegetation structure across a gradient well densities to determine extent which density proximity wells influence songbird abundance. In 2008 2009, we conducted 1,258 point counts on 105 parcels (1.6 km2/parcel) at varying distances from...
In the early 1990s Agriculture Canada's Permanent Cover Program (PCP) converted over 445,000 ha of cropland to perennial vegetative cover. The wildlife benefits PCP have not been subject previous research. We conducted grassland bird surveys on 629 sites and 564 across Alberta, Saskatchewan, Manitoba between 25 May 3 July 1998. showed higher avian species richness than cropland, nine 10 commonly detected occurred at frequencies in cropland. were characterized by taller, denser vegetation...
Agriculture and wildlife conservation programs have converted vast amounts of cropland into grasslands planted with exotic species. Understanding how landscape context influences avian use native is essential for developing effective strategies in agricultural landscapes. Our primary objective was to determine the extent which amount type grassland surrounding abundance songbird species on parcels southern Saskatchewan Alberta, Canada. Bird more strongly influenced by within 400 m breeding...
We conducted roadside and trail-side point count surveys to determine whether grassland bird abundance differs along ditched non-ditched sampling points in southwestern Saskatchewan. Savannah Vesper Sparrows were more abundant roads, while Baird's Sparrows, Chestnut-collared Longspurs, Sprague's Pipits trails. Clay-colored Horned Larks, Western Meadowlarks detected equally roads The lower of may be attributed the 20–30% reduction suitable habitat associated with road right-of-way within a...
Rapid expansion of cropland threatens grassland ecosystems across western North America and broad-scale planning can be a catalyst motivating individuals agencies to accelerate conservation. Sprague's Pipit (Anthus spragueii) is an imperiled songbird whose population has been declining rapidly in recent decades. Here, we present strategic framework for conservation pipits their habitat the northern Great Plains. We modeled pipit distribution its million-km2 breeding range Canada U.S....
Conservation of grassland birds in agricultural landscapes requires an understanding the demographic consequences nesting native and planted grasslands. Much regions has been converted to cropland. Subsequently, seeding cropland perennial grasslands become a common strategy restore habitat for birds, but these also may be used as hay pasture forage livestock. Our objectives were determine (1) if abundance songbirds reproductive success waterfowl varied between grassland, (2) amount...
To determine the benefits to grassland birds of converting cropland hayland in southern Saskatchewan, Canada, we quantified relative nest abundance and success nesting haylands influence landscape variables have on these parameters. We found nests 26 species birds, primarily waterfowl vesper sparrow (Pooecetes gramineus). With exception northern pintail (Anas acuta), few attempts were recorded for high priority Prairie Pothole Bird Conservation Region. Mayfield all (20 13% 1999 2000,...