Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Age-specific reproduction; Branta canadensis; Canada Goose; delayed maturation; helpers; lambda; life expectancy; lifetime reproduction; precocious nesting (1)
- Avian predator; brood-site selection; Centrocercus urophasianus; Greater Sage-Grouse; nest-site selection; predation risk; predator avoidance; spatial autocorrelation (1)
- Deuterium; injection; root; savanna; tracer; water-use (1)
- Driver overconfidence (1)
- Ferrunginous Hawk; Buteo regalis; habitat selection; landscape ecology; nest-site selection; Utah (1)
Articles 1 - 6 of 6
Full-Text Articles in Life Sciences
Multi-Stage Novice Defensive Driver Training Program: Does It Create Overconfidence?, Jessica Mueller, Laura Stanley, Kezia R. Manlove
Multi-Stage Novice Defensive Driver Training Program: Does It Create Overconfidence?, Jessica Mueller, Laura Stanley, Kezia R. Manlove
Wildland Resources Faculty Publications
Multi-stage training programs have been recommended to transfer knowledge and skills to high-risk novice drivers. However, some have suggested there is a link between skill training and an increased crash probability due to overconfidence. This project evaluates the outcomes of a multi-phase training system and compares the performance of novice drivers who received second-stage training with that of a control group of novice drivers who received traditional, single-stage training. This trained group and an equivalent group of untrained novice drivers completed annual surveys describing their involvement with traffic citations, near-miss crashes, single-vehicle crashes, and multiple-vehicle crashes. Citation records from the …
Root Niche Partitioning Among Grasses, Saplings, And Trees Measured Using A Tracer Technique, Andrew Kulmatiski, Karen H. Beard
Root Niche Partitioning Among Grasses, Saplings, And Trees Measured Using A Tracer Technique, Andrew Kulmatiski, Karen H. Beard
Wildland Resources Faculty Publications
Niche partitioning of resources by plants is believed to be a fundamental aspect of plant coexistence and biogeochemical cycles; however, measurements of the timing and location of resource use are often lacking because of the difficulties of belowground research. To measure niche partitioning of soil water by grasses, planted saplings, and trees in a mesic savanna (Kruger National Park, South Africa), we injected deuterium oxide into 102,000 points in 15, 154-m2 plots randomly assigned to one of five depths (0–120 cm) and one of three time periods during the 2008/2009 growing season. Grasses, saplings and trees all demonstrated an exponential …
Breeding-Site Selection By Ferruginous Hawks Within Utah’S Uintah Basin, Heather L. Keough, Michael R. Conover
Breeding-Site Selection By Ferruginous Hawks Within Utah’S Uintah Basin, Heather L. Keough, Michael R. Conover
Wildland Resources Faculty Publications
We examined factors that might influence breeding-site selection in Ferruginous Hawks (Buteo regalis) in the Uintah Basin, Utah, an area undergoing rapid oil and gas development. We located 31 occupied nests of Ferruginous Hawk (10 during 2002, 10 during 2003, and 11 during 2004) and compared them to 32 historical nest sites of Ferruginous Hawks that were unoccupied during our study, and 32 random sites. Ferruginous Hawks selected nesting areas that were dominated by mixed desert-shrub vegetation communities with scattered Utah juniper trees (Juniperus osteosperma), higher prey abundance, and a high number of active petroleum wells. …
Designing A Monitoring Plan, Eric M. Gese, Hilary S. Cooley, Frederick F. Knowlton
Designing A Monitoring Plan, Eric M. Gese, Hilary S. Cooley, Frederick F. Knowlton
Wildland Resources Faculty Publications
Monitoring is the collection and analysis of repeated observations or measurements to determine whether a management action is having the desired effect of meeting management objectives and demonstrating success or failure of a management strategy (Elzinga et al 2001). Monitoring is composed of a series of surveys (sensu Chapter 2) framed in a design aimed at answering specific management questions. There are many reasons to establish monitoring plans, such as when a carnivore species is of a high social or economic value, is rare and decreasing in numbers, is in eminent danger of extinction, or is part of a …
Delayed Nesting By Female Canada Geese (Branta Canadensis): Benefits And Costs, Michael R. Conover
Delayed Nesting By Female Canada Geese (Branta Canadensis): Benefits And Costs, Michael R. Conover
Wildland Resources Faculty Publications
In many avian species, females do not nest the first year they attain sexual maturity. I examined the benefits and costs of delayed nesting in a nonmigratory population of Canada Geese (Branta canadensis) in New Haven County, Connecticut, from 1984 through 2008. I individually marked 381 female goslings and monitored them throughout their lives. Eighty-seven females were recruited into the local breeding population; 16 of these started nesting when 1 or 2 years old (young nesters), and 71 started nesting when 3 to 9 years old (delayed nesters). During their first reproductive effort, young nesters and delayed nesters produced similar-sized …
Greater Sage-Grouse (Centrocercus Urophasianus) Select Nest Sites And Brood Sites Away From Avian Predators, Jonathan B. Dinkins, Michael R. Conover, Chrostopher P. Kirol, Jeffrey L. Beck
Greater Sage-Grouse (Centrocercus Urophasianus) Select Nest Sites And Brood Sites Away From Avian Predators, Jonathan B. Dinkins, Michael R. Conover, Chrostopher P. Kirol, Jeffrey L. Beck
Wildland Resources Faculty Publications
Greater Sage-Grouse (Centrocercus urophasianus) have declined in distribution and abundance in western North America over the past century. Depredation of nests and predation of chicks can be two of the most influential factors limiting their productivity. Prey species utilize antipredation behaviors, such as predator avoidance, to reduce the risk of predation. Birds in general balance the dual necessity of selecting cover to hide from visual and olfactory predators to enhance prospects of survival and reproductive success, which may also be achieved by selecting habitat with relatively fewer predators. We compared avian predator densities at Greater Sage-Grouse nests and brood locations …