A5065843007- Wildlife Ecology and Conservation
- Bat Biology and Ecology Studies
- Animal Behavior and Welfare Studies
- Ruminant Nutrition and Digestive Physiology
- Physiological and biochemical adaptations
- Wildlife-Road Interactions and Conservation
- Marine animal studies overview
- Rangeland and Wildlife Management
- Plant and fungal interactions
- Species Distribution and Climate Change
- Forensic Entomology and Diptera Studies
- Plant Surface Properties and Treatments
- Veterinary Pharmacology and Anesthesia
- Insect and Pesticide Research
- Genetic and phenotypic traits in livestock
- Winter Sports Injuries and Performance
Washington State University
2018-2021
Alaska Department of Fish and Game
2010-2017
University of Alaska Anchorage
2010-2012
Providence College
2010-2012
Pacific Northwest Research Station
2010
US Forest Service
2010
ABSTRACT Ursids are the largest mammals to retain a plantigrade posture. This primitive posture has been proposed result in reduced locomotor speed and economy relative digitigrade unguligrade species, particularly at high speeds. Previous energetics research on polar bears (Ursus maritimus) found costs were more than double predictions for similarly sized quadrupedal mammals, which could be of their or due adaptations Arctic marine existence. To evaluate whether representative terrestrial...
Recent work suggests that moose ( Alces alces (L., 1758)) in the boreal ecoregion may be nutritionally limited by availability of protein as a consequence both low nitrogen (N) concentrations and high tannin levels their principal foods. However, ability to digest presence tannins is unknown. We undertook series digestion trials with captive quantify effects compare digestive capabilities other browsing cervids. fed four 14 single-species diets including 10 native tannin-containing forages 4...
ABSTRACT Animal movements are major determinants of energy expenditure and ultimately the cost–benefit landscape use. Thus, we sought to understand those costs how grizzly bears (Ursus arctos) move in mountainous landscapes. We trained captive walk on a horizontal treadmill up down 10% 20% slopes. The cost moving upslope increased linearly with speed slope angle, this was more costly than horizontally. downslope travel at slower speeds greater traveling horizontally but appeared decrease...
Abstract Heat dissipation limit theory posits that energy available for growth and reproduction in endotherms is limited by their ability to dissipate heat. In mammals, endogenous heat production increases markedly during gestation lactation, thus female mammals may be subject greater thermal constraints on expenditure than males. Such likely have important implications behaviour population performance a warming climate. We used mechanistic simulation model based the first principles of mass...
ABSTRACT Telazol ® (TZ, tiletamine hydrochloride [HCl] and zolazepam HCl) has been used to immobilize black bears for research management activities since the 1980s. Although considered an effective safe drug, TZ some disadvantages, including prolonged restraint time inability of reversal. We tested efficacy dexmedetomidine (dexMTZ) 9 urban ( Ursus americanus ) in Anchorage, Alaska, USA, during 2013. recorded induction recovery times measured physiological responses partial pressures...
Abstract We explored a one‐step method of extracting plant cuticular hydrocarbons for the analysis diet composition, intake, and passage rate herbivores. Alkanes (waxes produced by plants) long‐chain alcohols (LCOHs) have traditionally been extracted via sequence saponification esterification (S/E) separation techniques, which are labor‐ time‐intensive. improved upon alkane samples in hexane using Dionex's Accelerated Solvent Extractor (ASE®; Dionex Corporation, Bannockburn, IL) with...
Habitat management for herbivores often depends on an understanding of the food habits animals. Plant cuticular waxes containing nearly indigestible complex mixture n-alkanes and long-chain alcohols (LCOHs) have recently shown promise diet analyses, but accuracy technique strongly efficiency recovery markers in feces. Fecal LCOHs from 10 browse stems or leaves two ensiled grass hays fed to moose (Alces alces (Linnaeus, 1758)) during vivo digestion trials was investigated. n-Alkanes were...