Roger A. Powell

Works (116)

Updated: August 16th, 2024 13:38

2024 journal article

Using global remote camera data of a solitary species complex to evaluate the drivers of group formation

Proceedings of the National Academy of Sciences, 121(12).

By: J. Twining *, C. Sutherland *, A. Zalewski *, M. Cove* , J. Birks, O. Wearn, J. Haysom *, A. Wereszczuk * ...

author keywords: sociality; social organisation; group- living; camera trap; resource dispersion hypothesis
UN Sustainable Development Goal Categories
14. Life Below Water (Web of Science)
15. Life on Land (Web of Science)
Sources: Web Of Science, ORCID, Crossref, NC State University Libraries
Added: May 7, 2024

2023 article

Food and cover resources for small mammals on an industrially logged landscape in the Sierra Nevada of California

Fraik, A. K., Facka, A. N., & Powell, R. A. (2023, March 20). CANADIAN JOURNAL OF ZOOLOGY.

By: A. Fraik  n, A. Facka n & R. Powell n

author keywords: cover; food; forest management; functional value; Neotoma fuscipes; Peromyscus maniculatus
TL;DR: It is demonstrated that shrubs and non coniferous trees are particularly important for small mammals and should be of particular focus to forest managers in the Sierras and mountains with similar forest structures. (via Semantic Scholar)
UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: April 24, 2023

2023 journal article

Food and cover resources for small mammals on an industrially logged landscape in the Sierra Nevada of California

CANADIAN JOURNAL OF ZOOLOGY, 101(6), 473–485.

By: A. Fraik, A. Facka & R. Powell

author keywords: cover; food; forest management; functional value; Neotoma fuscipes; Peromyscus maniculatus
UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: July 3, 2023

2022 article

Comparison of behaviors of black bears with and without habituation to humans and supplemental research feeding

Powell, R. A., Mansfield, S. A., & Rogers, L. L. (2022, October 5). JOURNAL OF MAMMALOGY.

By: R. Powell n, S. Mansfield* & L. Rogers*

author keywords: black bear; foraging; habituation; movement; supplementation; Ursus americanus
UN Sustainable Development Goal Categories
14. Life Below Water (Web of Science)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: October 17, 2022

2022 journal article

Evaluating the efficacy of reintroducing fishers (Pekania pennanti) to a landscape managed for timber production

FOREST ECOLOGY AND MANAGEMENT, 511.

By: D. Green *, A. Facka *, K. Smith  n, S. Matthews * & R. Powell n

author keywords: Fisher; Jolly-Seber; Managed landscape; Pekania pennanti; Population monitoring; Reintroduction; Spatial capture-recapture; Timber production
UN Sustainable Development Goal Categories
14. Life Below Water (Web of Science)
15. Life on Land (Web of Science; OpenAlex)
Source: Web Of Science
Added: June 20, 2022

2022 journal article

Mixed-severity wildfire and salvage logging affect the populations of a forest-dependent carnivoran and a competitor

ECOSPHERE, 13(1).

By: D. Green *, M. Martin *, R. Powell n, E. McGregor*, M. Gabriel *, K. Pilgrim, M. Schwartz, S. Matthews *

author keywords: community ecology; fire; fisher; gray fox; Klamath-Siskiyou; mesocarnivore; non-invasive monitoring; Pekania pennanti; salvage logging; spatial capture-recapture; Urocyon cinereoargenteus
UN Sustainable Development Goal Categories
14. Life Below Water (Web of Science)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: February 7, 2022

2021 article

Bed site selection by female North American black bears (Ursus americanus)

Mansfield, S. A., Rogers, L. L., Robison, S., & Powell, R. A. (2021, December 15). JOURNAL OF MAMMALOGY.

By: S. Mansfield*, L. Rogers*, S. Robison* & R. Powell n

author keywords: bear; bed site; predator avoidance; resource selection; rest site; Ursus americanus
TL;DR: Female bears with cubs selected upland bed sites more often than did females without cubs and also more often selected sites adjacent to a tree with coarse bark, which cubs could climb easily, especially a white pine. (via Semantic Scholar)
UN Sustainable Development Goal Categories
14. Life Below Water (Web of Science)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: March 21, 2022

2021 journal article

Growth and reproduction by young urban and rural black bears

Journal of Mammalogy, 102(4), 1165–1173.

By: N. Gould n, R. Powell n, C. Olfenbuttel * & C. DePerno n 

Ed(s): J. Hopkins

author keywords: black bears; litter size; mast production; primiparity; reproductive ecology; urban wildlife; Ursus americanus
TL;DR: It is hypothesize that reproduction by 2-year-old bears is linked to the availability of anthropogenic food sources associated with urban environments and urban bear populations may be source populations for surrounding, rural areas. (via Semantic Scholar)
UN Sustainable Development Goal Categories
14. Life Below Water (Web of Science)
15. Life on Land (Web of Science)
Sources: Web Of Science, NC State University Libraries, Crossref
Added: September 7, 2021

2021 journal article

Intraspecific Competition, Habitat Quality, Niche Partitioning, and Causes of Intrasexual Territoriality for a Reintroduced Carnivoran

FRONTIERS IN ECOLOGY AND EVOLUTION, 9.

By: A. Facka n & R. Powell n

author keywords: carnivore; competition; habitat; home range; intrasexual territory; movements; niche partitioning; territory
TL;DR: Female fishers avoid conspecific competition from all fishers, but males tolerate, or impose, competition with females, apparently to increase mating opportunities, consistent with the movements and strategies of other solitary carnivores. (via Semantic Scholar)
UN Sustainable Development Goal Categories
14. Life Below Water (Web of Science)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: November 29, 2021

2021 article

Value, Limitations, and Recommendations for Grading of Canine Cutaneous Mast Cell Tumors: A Consensus of the Oncology-Pathology Working Group

Berlato, D., Bulman-Fleming, J., Clifford, C. A., Garrett, L., Intile, J., Jones, P., … Rasotto, R. (2021, April 23). VETERINARY PATHOLOGY, Vol. 4.

By: D. Berlato *, J. Bulman-Fleming*, C. Clifford, L. Garrett *, J. Intile n , P. Jones, D. Kamstock, J. Liptak ...

author keywords: cancer; pathology; oncology; dogs; mast cell tumor; grading
MeSH headings : Animals; Consensus; Dog Diseases / diagnosis; Dogs; Humans; Mast Cells; Neoplasms / veterinary; Pathologists
TL;DR: The authors provide a critical review of the current literature for grading of canine cutaneous mast cell tumors, suggest guidelines for reporting, and provide recommendations for its clinical interpretation. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: June 10, 2021

2020 journal article

Using reintroduction to elucidate breeding system, breeding phenology, and infanticide for a solitary carnivore (fisher, Pekania pennanti)

CANADIAN JOURNAL OF ZOOLOGY, 98(7), 433–447.

By: K. Smith  n, A. Facka n & R. Powell n

author keywords: breeding strategy; carnivore; fisher; male infanticide; Pekania pennanti; polygamy; polygynandry; reintroduction
TL;DR: This work uses logistic and linear regression to evaluate the timing and frequency of male visitation at 262 reproductive dens used by 50 individual females and provides the first descriptions of male–female interactions for wild fishers. (via Semantic Scholar)
UN Sustainable Development Goal Categories
14. Life Below Water (Web of Science)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: July 20, 2020

2017 journal article

Dynamic occupancy modelling reveals a hierarchy of competition among fishers, grey foxes and ringtails

JOURNAL OF ANIMAL ECOLOGY, 87(3), 813–824.

By: D. Green *, S. Matthews *, R. Swiers n, R. Callas*, J. Yaeger*, S. Farber*, M. Schwartz *, R. Powell n

author keywords: Bassariscus astutus; dynamic occupancy model; Jolly-Seber; Pekania pennanti; source community; spatial capture-recapture; translocation; Urocyon cinereoargenteus
MeSH headings : Animals; California; Female; Foxes / physiology; Life History Traits; Male; Models, Biological; Mustelidae / physiology; Oregon; Population Dynamics; Procyonidae / physiology; Social Dominance
TL;DR: Fishers was the dominant small carnivore where present and negatively affected foxes directly and ringtails indirectly, and coexistence among the small carnivores the authors studied appears to reflect dynamic spatial partitioning. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2016 journal article

A Comparison of Survey Techniques for Medium- to Large-sized Mammals in Forested Wetlands

SOUTHEASTERN NATURALIST, 15(1), 175–187.

By: A. Rockhill*, R. Sollman, R. Powell n & C. DePerno* 

UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
15. Life on Land (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 personal communication

Build habitats, not fences, for caribou

Proulx, G., & Powell, R. A. (2016, September 30).

By: G. Proulx & R. Powell n

MeSH headings : Animals; Ecosystem; Reindeer
TL;DR: A proposed 50-year-long project to create a predator-free, fenced, 100-square-kilometer landscape to farm caribou in the Little Smoky range intends to kill. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2016 journal article

Forestry

Ecosystems of California, 817–833.

By: W. Stewart, B. Sharma, R. York, L. Diller, N. Hamey, R. Powell, R. Swiers

Source: NC State University Libraries
Added: August 6, 2018

2016 journal article

Timing of translocation influences birth rate and population dynamics in a forest carnivore

ECOSPHERE, 7(1).

By: A. Facka n, J. Lewis*, P. Happe *, K. Jenkins *, R. Callas* & R. Powell n

author keywords: California; carnivore; delayed implantation; fisher; life history; Olympic Peninsula; Pekania pennanti; population extinction; reintroduction; reproduction; timing; translocation; Washington
TL;DR: The results from both empirical data and simulations show that the timing of translocation should be considered during planning of translocations and implemented before the capture, movement, and release of organisms for translocation. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2015 journal article

Screening GPS telemetry data for locations having unacceptable error

ECOLOGICAL INFORMATICS, 27, 11–20.

By: P. Laver *, R. Powell n & K. Alexander *

author keywords: Collars; Global Positioning System; GPS; HDOP; Horizontal dilution of precision; Wildlife telemetry
TL;DR: The screening method combines test data and a model-averaging information-theoretic framework that uses a priori candidate models of telemetry measurement error to identify locations with unacceptable measurement error. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2013 journal article

Diets of sympatric red wolves and coyotes in northeastern North Carolina

JOURNAL OF MAMMALOGY, 94(5), 1141–1148.

By: J. McVey n, D. Cobb *, R. Powell n, M. Stoskopf n, J. Bobling, L. Waits *, C. Moorman n 

author keywords: dietary overlap; DNA genotyping; Canis latrans; Canis rufus; coyote; food habits; red wolf; scat
TL;DR: Diets of red wolves and coyotes did not differ, but the proportion of small rodents in the composite scats of both canids was greater in the spring than in the summer, suggesting that these 2 species may be affecting prey populations similarly. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2013 journal article

Influence of environmental conditions and facility on faecal glucocorticoid concentrations in captive pygmy rabbits (Brachylagus idahoensis)

ANIMAL WELFARE, 22(3), 357–368.

By: C. Scarlata n, B. Elias*, J. Godwin n , R. Powell n, D. Shepherdson*, L. Shipley*, J. Brown *

author keywords: animal welfare; captive breeding; environmental enrichment; faecal glucocorticoids; husbandry; pygmy rabbit
TL;DR: Based on measurements of faecal glucocorticoids, pygmy rabbits are best managed in enclosures that contain soil for digging burrows, suggesting that factors other than housing influenced adrenal activity in these rabbits. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2013 journal article

The Effect of Illumination and Time of Day on Movements of Bobcats (Lynx rufus)

PLoS ONE, 8(7), e69213.

By: A. Rockhill n, C. DePerno n  & R. Powell n

Ed(s): M. Somers

MeSH headings : Animals; Female; Lighting; Lynx / physiology; Male; Moon; Movement / physiology; North Carolina; Time Factors; Wetlands
TL;DR: Bobcats had highest movement rates during daytime when nighttime illumination was low (new moon) and higher movement rates During nighttime when lunar illumination was high (full moon), consistent with prey availability being affected by light level and by limited vision by bobcats during darkness. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Sources: NC State University Libraries, Crossref, NC State University Libraries
Added: August 6, 2018

2012 journal article

Carnivore Translocations and Conservation: Insights from Population Models and Field Data for Fishers (Martes pennanti)

PLOS ONE, 7(3).

By: J. Lewis*, R. Powell n & W. Zielinski *

MeSH headings : Animals; Carnivora / growth & development; Conservation of Natural Resources / methods; Ecosystem; Female; Geography; Male; Models, Biological; Mustelidae / growth & development; North America; Population Dynamics; Software
TL;DR: This model predicts that the most important factor influencing successful re-establishment of a fisher population is the number of adult females reintroduced (provided some males are also released), and hypothesizes that many males may need to be released to insure a sufficient number of good breeders are included, probably large males. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2012 journal article

Diverse perspectives on mammal home ranges or a home range is more than location densities

JOURNAL OF MAMMALOGY, 93(4), 887–889.

By: R. Powell n

author keywords: cognitive map; habitat quality; home range; hypothesis testing; resources
TL;DR: 5 papers provide statistical, economic, game theoretic, mechanistic, information dependent, and conceptual approaches to understanding home ranges and why animals have them and oppose viewing home ranges as the product of measurements. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2012 journal article

Foraging optimally for home ranges

JOURNAL OF MAMMALOGY, 93(4), 917–928.

By: M. Mitchell * & R. Powell n

author keywords: area minimization; black bear; distribution; habitat quality; home range; optimality; resource depression; resource maximization
TL;DR: This work presents economic models that predict how home ranges can be efficient with respect to spatially distributed resources, discounted for travel costs, under 2 strategies of optimization, resource maximization and area minimization, and shows how constraints such as competitors can influence structure of homes ranges through resource depression. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2012 journal article

Relationship between fecal hormone concentrations and reproductive success in captive pygmy rabbits (Brachylagus idahoensis)

JOURNAL OF MAMMALOGY, 93(3), 759–770.

By: C. Scarlata n, B. Elias*, J. Godwin n , R. Powell n, D. Shepherdson*, L. Shipley *, J. Brown *

author keywords: captive breeding; conception; fecal glucocorticoids; hormones; lactation; litter size; mating; progestagens; stress; reproduction
TL;DR: Investigating patterns of fecal progestagen and glucocorticoid excretion in females during mating, gestation, and lactation and identifying hormonal relationships to reproductive success found higher concentrations during the breeding season were associated with reduced conception rates and survival of subsequent litters. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2012 personal communication

Those puppy-dog eyes

By: R. Powell

Source: NC State University Libraries
Added: August 6, 2018

2012 journal article

What is a home range?

JOURNAL OF MAMMALOGY, 93(4), 948–958.

By: R. Powell n & M. Mitchell *

author keywords: cognitive map; currency; fitness surface; global positioning system; hippocampus; home range; telemetry
TL;DR: Roger Powell documented his own use of space for 65 days, obtaining complete data on where he went, what he did, and how much energy and money he expended and gained in each place, providing insight into what a home range is and how ecologists should approach quantifying other animals' home ranges. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2011 journal article

A COMPARISON OF TWO FIELD CHEMICAL IMMOBILIZATION TECHNIQUES FOR BOBCATS (LYNX RUFUS)

JOURNAL OF ZOO AND WILDLIFE MEDICINE, 42(4), 580–585.

By: A. Rockhill n, S. Chinnadurai*, R. Powell* & C. DePerno* 

author keywords: Anesthesia; bobcat; induction rate; ketamine; Lynx rufus; recovery rate
MeSH headings : Analgesics, Opioid / administration & dosage; Analgesics, Opioid / pharmacology; Anesthetics, Dissociative / administration & dosage; Anesthetics, Dissociative / pharmacology; Animals; Animals, Wild; Body Temperature / drug effects; Butorphanol / administration & dosage; Butorphanol / pharmacology; Drug Therapy, Combination; Female; Heart Rate / drug effects; Hypnotics and Sedatives / administration & dosage; Hypnotics and Sedatives / pharmacology; Immobilization / veterinary; Ketamine / administration & dosage; Ketamine / pharmacology; Lynx; Male; Medetomidine / administration & dosage; Medetomidine / pharmacology; Oxygen / blood; Respiratory Rate / drug effects
TL;DR: Though both protocols provided safe and reliable sedation, the benefits of using medetomidine and butorphanol to lower ketamine doses and decrease processing time for brief nonsurgical sedation of bobcats in the field are presented. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2011 journal article

Black-footed ferrets and Siberian polecats as ecological surrogates and ecological equivalents

JOURNAL OF MAMMALOGY, 92(4), 710–720.

By: D. Biggins *, L. Hanebury*, B. Miller * & R. Powell n

author keywords: circadian rhythm; ecological equivalent; ecological surrogate; intraguild predation; moon; Mustela eversmanii; Mustela nigripes; predator avoidance
TL;DR: Examination of data suggests that black-footed ferrets and Siberian polecats might be ecological equivalents but are not perfect surrogates, and polecats as surrogates for black-foot ferrets have provided critical insight needed to improve the success of ferret reintroductions. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2011 journal article

Characterizing gonadal and adrenal activity by fecal steroid analyses in pygmy rabbits (Brachylagus idahoensis)

GENERAL AND COMPARATIVE ENDOCRINOLOGY, 171(3), 373–380.

By: C. Scarlata n, B. Elias*, J. Godwin n , R. Powell n, D. Shepherdson*, L. Shipley *, J. Brown *

author keywords: Brachylagus idalioensis; Cortisol; Hormones; Pregnancy; Progesterone; Pygmy rabbit; Reproduction
MeSH headings : Adrenal Glands / metabolism; Animals; Chromatography, High Pressure Liquid; Feces / chemistry; Female; Gonads / metabolism; Immunoenzyme Techniques; Male; Pregnancy; Rabbits; Seasons; Steroids / metabolism
TL;DR: The spike in progestagens 1 day after mating was a significant discovery for this species and appears to provide a reliable means of determining if a successful mating has occurred, suggesting a possible link between heightened adrenal activity and lowered reproductive fitness in pygmy rabbits. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2011 journal article

Managing an invasive predator pre-adapted to a pulsed resource: a model of stoat (Mustela erminea) irruptions in New Zealand beech forests

BIOLOGICAL INVASIONS, 13(12), 3039–3055.

By: C. King * & R. Powell n

author keywords: Nothofagus; Mustela erminea; Pulsed resources; Population matrices; Predator control; New Zealand
TL;DR: A 4-matrix model is developed to predict the effects of culling on λ, the annual rate of change in the size of the stoat population, through the four annual phases of an average masting cycle, explicitly distinguishing between apparent and real culling. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2010 review

Building the bridge between animal movement and population dynamics

[Review of ]. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, 365(1550), 2289–2301.

By: J. Morales *, P. Moorcroft *, J. Matthiopoulos *, J. Frair *, J. Kie*, R. Powell n, E. Merrill *, D. Haydon *

author keywords: demography; redistribution kernels; perfect mixing; spatial ecology; dispersal; time budgets
TL;DR: The way animals move has important consequences for the degree of mixing that the authors expect to find both within a population and between individuals of different species, and as most animals revisit some places and avoid others based on their previous experiences, they foresee the incorporation of long-term memory and intention in movement models. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2010 review

Habitat-performance relationships: finding the right metric at a given spatial scale

[Review of ]. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, 365(1550), 2255–2265.

By: J. Gaillard *, M. Hebblewhite *, A. Loison *, M. Fuller *, R. Powell n, M. Basille *, B. Van Moorter *

author keywords: density dependence; fitness; global positioning system; habitat selection; individual heterogeneity; scaling
MeSH headings : Animals; Animals, Wild; Behavior, Animal; Ecosystem; Geographic Information Systems; Population Dynamics; Seasons
TL;DR: Understanding the drivers of HPRs will inform animal ecology and improve conservation, and integrating data from GPS receivers with other animal-borne technologies and combining those data with additional life-history information is proposed. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2010 journal article

The home-range concept: are traditional estimators still relevant with modern telemetry technology?

PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, 365(1550), 2221–2231.

By: J. Kie*, J. Matthiopoulos *, J. Fieberg *, R. Powell n, F. Cagnacci *, M. Mitchell *, J. Gaillard *, P. Moorcroft *

author keywords: home ranges; utilization distributions; mechanistic models; GPS; telemetry; space use
MeSH headings : Animals; Animals, Wild; Data Interpretation, Statistical; Ecosystem; Geographic Information Systems; Homing Behavior; Models, Statistical; Telemetry
TL;DR: This work has shown that mechanistic home-range models, derived from models of animal movement behaviour, promise to offer new insights into how home ranges emerge as the result of specific patterns of movements by individuals in response to their environment. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2010 journal article

Theme issue 'Challenges and opportunities of using GPS-based location data in animal ecology' introduction

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences, 365(1550), 2157–2162.

By: F. Cagnacci, L. Boitani, R. Powell & M. Boyce

Source: NC State University Libraries
Added: August 6, 2018

2008 journal article

An evaluation of long-term capture effects in ursids: Implications for wildlife welfare and research

JOURNAL OF MAMMALOGY, 89(4), 973–990.

By: M. Cattet*, J. Boulanger, G. Stenhouse *, R. Powell n & M. Reynolds-Hogland *

author keywords: American black bear; body condition; exertional myopathy; grizzly bear; long-term capture effects; movement rates; muscle injury; ursids; Ursus americanus; Ursus arctos
TL;DR: The effect of repeated captures on age-related changes in body condition of 127 grizzly bears and 207 black bears was found to be poorer than that of bears captured once only, with the magnitude of effect directly proportional to number of times captured and the effect more evident with age. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2008 journal article

Estimated home ranges can misrepresent habitat relationships on patchy landscapes

ECOLOGICAL MODELLING, 216(3-4), 409–414.

By: M. Mitchell* & R. Powell n

author keywords: habitat quality; home range estimate; optimal home range; patchy landscape; resource distribution
TL;DR: The potential bias of including unselected, largely irrelevant patches in the field estimates of home ranges of animals can be high, particularly for home range estimators that assume uniform use of space within home range boundaries. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2007 journal article

Optimal use of resources structures home ranges and spatial distribution of black bears

ANIMAL BEHAVIOUR, 74, 219–230.

By: M. Mitchell * & R. Powell n

author keywords: area minimizing; black bear; landscape; optimal home range; resources; resource depression; resource maximizing; southern Appalachians; spatially explicit; individual-based model; Ursus americanus
TL;DR: It is concluded that home ranges of animals, like territories, are economical with respect to resources, and that resource depression may be the mechanism behind ideal free or ideal preemptive distributions on complex, heterogeneous landscapes. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2007 journal article

Selection of den sites by black bears in the southern Appalachians

JOURNAL OF MAMMALOGY, 88(4), 1062–1073.

By: M. Reynolds-Hogland *, M. Mitchell *, R. Powell n & D. Brown*

author keywords: bears; dens; habitat quality; roads; southern Appalachian Mountains; Ursus americanus
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2007 book

The natural history of weasels and stoats: Ecology, behavior, and management

Oxford; New York: Oxford University Press.

By: C. King & R. Powell

Source: NC State University Libraries
Added: August 6, 2018

2007 journal article

Understanding contributions of cohort effects to growth rates of fluctuating populations

JOURNAL OF ANIMAL ECOLOGY, 76(5), 946–956.

By: H. Wittmer *, R. Powell n & C. King *

author keywords: elasticity; environmental variation; life-history strategies; matrix models; vital rates
MeSH headings : Age Factors; Animals; Conservation of Natural Resources; Environment; Female; Fertility / physiology; Food Supply; Male; Models, Biological; Mustelidae / growth & development; Mustelidae / physiology; Periodicity; Population Dynamics; Population Growth; Reproduction / physiology; Species Specificity; Survival Rate
TL;DR: This work developed age-specific matrix models for naturally fluctuating populations of stoats Mustela erminea in New Zealand beech forests and suggested that management strategies based on elasticities of vital rates need to consider how population growth rates vary so as to meet appropriate economic and conservation targets. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2006 chapter

Home ranges, cognitive maps, habitat models and fitness landscapes for Martes

In A. K. F. D. J. Harrison & G. Proulx (Eds.), Martens and fishers (Martes) in human-altered environments: An international perspective (pp. 135–146).

By: R. Powell*

Ed(s): A. D. J. Harrison & G. Proulx

TL;DR: It is proposed that energy might be used as a crude index for modeling cognitive maps and fitness landscapes for fishers, and that model would form a basis for testing the a priori hypothesis that fishers choose home ranges that minimize the area needed to meet their requirements, thus maximizing their fitness. (via Semantic Scholar)
Source: NC State University Libraries
Added: August 6, 2018

2006 journal article

Spatio-temporal availability of soft mast in clearcuts in the Southern Appalachians

FOREST ECOLOGY AND MANAGEMENT, 237(1-3), 103–114.

By: M. Reynolds-Hogland *, M. Mitchell * & R. Powell n

author keywords: clearcuts; habitat; timber harvesting; wildlife
TL;DR: A theoretical model of temporal availability of soft mast in clearcuts using empirical data on percent cover and berry production of Gaylussacia, Vaccinium, and Rubus spp. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2005 journal article

Evaluating welfare of American black bears (Ursus americanus) captured in foot snares and in winter dens

JOURNAL OF MAMMALOGY, 86(6), 1171–1177.

By: R. Powell n

author keywords: animal welfare; bear; creatine kinase; lactate dehydrogenase; serum blood chemistry; snare; trap; Ursus americana
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2004 journal article

A mechanistic home range model for optimal use of spatially distributed resources

ECOLOGICAL MODELLING, 177(1-2), 209–232.

By: M. Mitchell * & R. Powell n

author keywords: area-minimizing; carrying capacity; landscape; limiting resources; optimal home range; patch; resource depression; resource distribution; resource-minimizing; resource threshold; spatially explicit; individual-based model
TL;DR: The results suggest that, in addition to landscape configuration, the extent to which animals depress resources included in their home ranges should determine the evenness of spatial dispersion, overlap, and home range structure, especially where animals select home ranges to satisfy a specific resource threshold and the density of animals is high. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2004 journal article

The effect on model identifiability of allowing different relocation rates for live and dead animals in the combined analysis of telemetry and recapture data

JOURNAL OF AGRICULTURAL BIOLOGICAL AND ENVIRONMENTAL STATISTICS, 9(1), 27–41.

By: M. Nasution*, C. Brownie n, K. Pollock n & R. Powell n

author keywords: capture-recapture; near-singularity; overparameterization; radio telemetry; unequal catchability; wildlife studies
TL;DR: Analysis of data from the study on black bears illustrated that estimates of survival have poor precision when relocation rates are estimated separately for live and dead animals, and it is recommended that the effort expended to relocate both living anddead animals be consistently high in each telemetry survey, so that relocation rates will be high and constant across time and mortality status. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
13. Climate Action (Web of Science)
14. Life Below Water (Web of Science)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2003 journal article

Effects of body size on male mating tactics and paternity in black bears, Ursus americanus

CANADIAN JOURNAL OF ZOOLOGY, 81(7), 1257–1268.

By: A. Kovach  n & R. Powell n

TL;DR: It was found that male home-range sizes were not positively associated with body size, but encounter rates with breeding females were not, and multiple paternity occurred in two of seven litters, indicating that sperm competition is important in black bear mating behaviour. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2003 chapter

Linking fitness landscapes with the behavior and distribution of animals

In J. A. Bissonette & I. Storch (Eds.), Landscape ecology and resource management: Linking theory with practice (pp. 93–123). Washington, DC: Island Press.

By: R. Powell

Ed(s): J. Bissonette & I. Storch

Source: NC State University Libraries
Added: August 6, 2018

2003 journal article

Response of black bears to forest management in the southern Appalachian mountains

JOURNAL OF WILDLIFE MANAGEMENT, 67(4), 692–705.

By: M. Mitchell & R. Powell*

author keywords: black bear; forest management; GIS; habitat change; habitat suitability index; home range; management indicator species; North Carolina; Pisgah National Forest; timber harvest; Ursus americanus
TL;DR: Forest management positively affected some aspects of bear habitat but had an overall negative effect on habitat suitability in the southern Appalachians, where soft mast is limiting, however, trade-offs between overall habitats suitability and improved productivity of soft mast may be warranted. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2003 review

Trapping and marking terrestrial mammals for research: Integrating ethics, performance criteria, techniques, and common sense

[Review of ]. ILAR JOURNAL, 44(4), 259–276.

By: R. Powell n & G. Proulx  n

author keywords: killing-traps; live-traps; mammal; marks; research design; traps
MeSH headings : Animal Experimentation / ethics; Animal Experimentation / standards; Animal Welfare; Animals; Animals, Wild; Mammals; Specimen Handling
TL;DR: It is proposed that researchers integrate ethics, performance criteria, techniques, and common sense when developing research trapping programs and in which members of institutional animal care and use committees address these topics when evaluating research protocols. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2002 journal article

Test of a habitat suitability index for black bears in the southern Appalachians

Wildlife Society Bulletin, 30(3), 794–808.

By: M. Mitchell, J. Zimmerman & R. Powell

Source: NC State University Libraries
Added: August 6, 2018

2001 chapter

Animal home ranges and territories and home range estimators

In L. Boitani & T. Fuller (Eds.), Research techniques in animal ecology: Controversies and consequences (pp. 65–110).

By: R. Powell

Ed(s): L. Boitani & T. Fuller

TL;DR: A critical review of the effects of Marking on the Biology of Vertebrates and modeling Species Distribution with GIS, by Fabio Corsi, Jan de Leeuw, and Andrew K. Skidmore. (via Semantic Scholar)
Source: NC State University Libraries
Added: August 6, 2018

2001 chapter

Martens and tayra

In The mammal encyclopedia (2nd ed.). Oxford: Equinox.

By: R. Powell

Source: NC State University Libraries
Added: August 6, 2018

2001 journal article

Who limits whom: Predators or prey?

Endangered Species Update, 18, 98–102.

By: R. Powell

Source: NC State University Libraries
Added: August 6, 2018

1999 conference paper

Biogeography of small mammals in the Southern Appalachians: Patterns of local and regional abundance

Proceedings of the Appalachian Biogeography Symposium : held June 25-29, 1995 at the Donaldson Brown Center, Virginia Polytechnic Institute and State University, Blacksburg, VA, 155–165. Martinsville, Va.: Virginia Museum of Natural History.

By: M. Steele & R. Powell

Source: NC State University Libraries
Added: August 6, 2018

1999 chapter

Fisher/Martes pennanti

In D. E. Wilson & S. Ruff (Eds.), The Smithsonian book of North American mammals (pp. 167–168). Washington, DC: Smithsonian Institution Press.

By: R. Powell

Ed(s): D. Wilson & S. Ruff

Source: NC State University Libraries
Added: August 6, 2018

1998 journal article

Estimating survival rates of black bears

CANADIAN JOURNAL OF ZOOLOGY, 76(7), 1335–1343.

By: V. Sorensen & R. Powell*

UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

1998 journal article

KERNELHR: a program for estimating animal home ranges

Wildlife Society Bulletin, 26(1), 95–100.

By: D. Seaman, B. Griffith & R. Powell

Source: NC State University Libraries
Added: August 6, 2018

1998 journal article

Topographical constraints and home range quality

ECOGRAPHY, 21(4), 337–341.

By: R. Powell n & M. Mitchell n

TL;DR: Bears’ homo ranges had lower resource values than was optimal for their home range locations and access to resources was limited by topography', Ignoring topography may lead researchers to misunderstand the ecology and behavior of animals that live in mountainous areas. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

1997 book

Ecology and behaviour of North American black bears: Home ranges, habitat and social organization

London; New York: Chapman & Hall.

By: R. Powell, J. Zimmermann & D. Seaman

Source: NC State University Libraries
Added: August 6, 2018

1997 journal article

Variation in body size, sexual dimorphism and age-specific survival in stoats, Mustela erminea (Mammalia: Carnivora), with fluctuating food supplies

BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY, 62(2), 165–194.

By: R. Powell n & C. King

author keywords: nutrition; 'silver spoon' effect; growth rate; age-specific mortality, fecundity; Mus musculus; New Zealand; density-dependent survival
Source: Web Of Science
Added: August 6, 2018

1996 journal article

Accuracy of kernel estimators for animal home range analysis

Ecology (Brooklyn, New York, N.Y.), 77, 2075–2085.

By: D. Seaman & R. Powell

Source: NC State University Libraries
Added: August 6, 2018

1996 journal article

An evaluation of the accuracy of kernel density estimators for home range analysis

ECOLOGY, 77(7), 2075–2085.

By: D. Seaman n & R. Powell n

author keywords: kernel density estimation; nonparametric statistical methods; radio telemetry; spatial analysis of home range; utilization distribution
TL;DR: Computer simulations are used to compare the area and shape of kernel density estimates to the true area andshape of multimodal two—dimensional distributions and show the fixed kernel gave area estimates with very little bias and the cross—validated fixed kernel also gave surface estimates with the lowest error. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

1996 journal article

Demographic analyses of a hunted black bear population with access to a refuge

CONSERVATION BIOLOGY, 10(1), 224–234.

By: R. Powell n, J. Zimmerman n, D. Seaman n & J. Gilliam n

UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

1995 journal article

RADIOTELEMETRY ERROR - LOCATION ERROR METHOD COMPARED WITH ERROR POLYGONS AND CONFIDENCE ELLIPSES

CANADIAN JOURNAL OF ZOOLOGY-REVUE CANADIENNE DE ZOOLOGIE, 73(6), 1123–1133.

By: J. Zimmerman & R. Powell*

TL;DR: It is asserted that researchers should use statistics derived from the linear distances between actual and estimated locations of test transmitters to estimate location error in radiotelemetry data, and this approach is called the location error method. (via Semantic Scholar)
UN Sustainable Development Goal Categories
1. No Poverty (OpenAlex)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

1994 journal article

EFFECTS OF SCALE ON HABITAT SELECTION AND FORAGING BEHAVIOR OF FISHERS IN WINTER

JOURNAL OF MAMMALOGY, 75(2), 349–356.

By: R. Powell n

author keywords: FISHER; FORAGING; HABITAT SELECTION; MARTES-PENNANTI; MICHIGAN; SCALE
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

1994 chapter

Evolution and biogeography

In A. S. H. S. W. Buskirk, M. G. Raphael, & R. A. Powell (Eds.), Martens, sables and fishers: Biology and conservation (pp. 11–12). Ithaca, NY: Comstock Pub. Associates.

By: R. Powell

Ed(s): A. S. W. Buskirk, . M. G. Raphael & R. Powell

Source: NC State University Libraries
Added: August 6, 2018

1994 chapter

Fisher

In K. A. L. F. Ruggiero, S. W. Buskirk, & W. J. Zielinski (Eds.), The scientific basis for conserving forest carnivores: American marten, fisher, lynx, and wolverine in the western United States (pp. 38–73). Fort Collins, CO: U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station.

By: R. Powell & W. Zielinski

Ed(s): K. L. F. Ruggiero, . S. W. Buskirk & W. Zielinski

Source: NC State University Libraries
Added: August 6, 2018

1994 chapter

Fishers and martens

In Wild mammals of North America: Biology, management, and conservation (2nd ed.) (pp. 635–649).

By: R. Powell, S. Buskirk & W. Zielinski

Source: NC State University Libraries
Added: August 6, 2018

1994 chapter

Habitat ecology of American martens and fishers

In A. S. H. S. W. Buskirk, M. G. Raphael, & R. A. Powell (Eds.), Martens, sables, and fishers: Biology and conservation (pp. 283–296). Ithaca, NY: Comstock Pub. Associates.

By: S. Buskirk & R. Powell

Ed(s): A. S. W. Buskirk, . M. G. Raphael & R. Powell

Source: NC State University Libraries
Added: August 6, 2018

1994 book

Martens, sables and fishers: Biology and conservation

Ithaca, NY: Cornell University Press.

Roger Powell

Source: NC State University Libraries
Added: August 6, 2018

1994 chapter

Morphology, ecology and the evolution of sexual dimorphism in North American Martes

In A. S. H. S. W. Buskirk, M. G. Raphael, & R. A. Powell (Eds.), Martens, sables, and fishers: Biology and conservation (pp. 72–84). Ithaca, NY: Comstock Pub. Associates.

By: T. Holmes & R. Powell

Ed(s): A. S. W. Buskirk, . M. G. Raphael & R. Powell

Source: NC State University Libraries
Added: August 6, 2018

1994 journal article

PINE VOLE (MICROTUS-PINETORUM) MOVEMENT TOWARD AREAS IN APPLE ORCHARDS WITH REDUCED-POPULATIONS

JOURNAL OF HORTICULTURAL SCIENCE, 69(6), 1077–1082.

By: D. Lapasha n & R. Powell n

TL;DR: Although both sexes responded to removal of neighbours, males tended to move further than females, therefore control measures in orchards cannot be limited to one-time removal of problem animals. (via Semantic Scholar)
UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

1994 chapter

Population ecology

In A. S. H. S. W. Buskirk, M. G. Raphael, & R. A. Powell (Eds.), Martens, sables and fishers: Biology and conservation (pp. 99–100). Ithaca, NY: Comstock Pub. Associates.

By: R. Powell

Ed(s): A. S. W. Buskirk, . M. G. Raphael & R. Powell

Source: NC State University Libraries
Added: August 6, 2018

1994 chapter

Structure and spacing of Martes populations

In A. S. H. S. W. Buskirk, M. G. Raphael, & R. A. Powell (Eds.), Martens, sables, and fishers: Biology and conservation (pp. 101–121). Ithaca, NY: Comstock Pub. Associates.

By: R. Powell

Ed(s): A. S. W. Buskirk, . M. G. Raphael & R. Powell

Source: NC State University Libraries
Added: August 6, 2018

1993 book

The fisher: Life history, ecology and behavior. (2nd ed.)

Minneapolis: University of Minnesota Press.

By: R. Powell

Source: NC State University Libraries
Added: August 6, 2018

1993 conference paper

Why do some forest carnivores exhibit intrasexual territoriality and what are the consequences for management?

Proceedings of the International Union of Game Biologists XXI Congress : forests and wildlife ... towards the 21st century, 21, 268–273. Chalk River, Ont.: Canadian Forest Service.

By: R. Powell

Source: NC State University Libraries
Added: August 6, 2018

1992 book

An analysis and evaluation of a black bear sanctuary in western North Carolina: Final report for Study B2, Project W-57, Federal Aid in Wildlife Restoration Act

Raleigh, NC: Dept. of Zoology, North Carolina State University.

By: R. Powell

Source: NC State University Libraries
Added: August 6, 2018

1992 journal article

Biogeography of small mammals in the Southern Appalachians: Patterns of local and regional abundance

Journal of the Pennsylvania Academy of Science, 64(suppl.), 207.

By: M. Steele & R. Powell

Source: NC State University Libraries
Added: August 6, 2018

1992 journal article

HELPING BY JUVENILE PINE VOLES (MICROTUS-PINETORUM), GROWTH AND SURVIVAL OF YOUNGER SIBLINGS, AND THE EVOLUTION OF PINE VOLE SOCIALITY

BEHAVIORAL ECOLOGY, 3(4), 325–333.

By: R. Powell n & J. Fried n

UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

1991 book

Symposium on the Biology and Management of Martens and Fishers: Abstracts of presentations

Laramie, WY: University of Wyoming.

By: R. Powell, S. Buskirk & J. Jones

Source: NC State University Libraries
Added: August 6, 2018

1990 journal article

DEVELOPMENT OF SURVIVAL SKILLS IN CAPTIVE-RAISED SIBERIAN POLECATS (MUSTELA-EVERSMANNI) .1. LOCATING PREY

JOURNAL OF ETHOLOGY, 8(2), 89–94.

By: B. Miller *, D. Biggins *, C. Wemmer*, R. Powell n, L. Hanebury*, D. Horn*, A. Vargas*

TL;DR: Older Siberian polecats located prey significantly quicker than younger polecats, but all age groups spent a great deal of time in surface activity not directed toward a burrow, which would presumably reduce the risk of predation for hunting polecats. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

1990 journal article

DEVELOPMENT OF SURVIVAL SKILLS IN CAPTIVE-RAISED SIBERIAN POLECATS (MUSTELA-EVERSMANNI) .2. PREDATOR AVOIDANCE

JOURNAL OF ETHOLOGY, 8(2), 95–104.

By: B. Miller *, D. Biggins *, C. Wemmer*, R. Powell n, L. Calvo, L. Hanebury*, T. Wharton

TL;DR: N naive Siberain polecats exposed to a swooping stuffed great horned owl and a stuffed badger mounted on a remote control toy automobile frame showed an innate escape response to the owl model at 4 months of age, and a short-tert ability to remember a single mild aversive encounter with the badger and owl models at 3 or 4month age. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

1990 journal article

INTERNAL STRUCTURE OF HOME RANGES OF BLACK BEARS AND ANALYSES OF HOME-RANGE OVERLAP

JOURNAL OF MAMMALOGY, 71(3), 402–410.

By: M. Horner n & R. Powell n

TL;DR: Eight black bears outfitted with motion-sensitive transmitter collars were radiotracked from May through December 1984 in the Pisgah Bear Sanctuary in the mountains of western North Carolina to determine whether neighbors exhibited spatial or temporal avoidance. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

1990 conference paper

Identifying patterns and intensity of home range use

In W. R. A. L. M. Darling & F. C. Dean (Eds.), Bears--their biology and management : eighth International Conference on Bear Research and Management : a selection of papers from the Conference held at Victoria, British Columbia, Canada, February 1989 (Vol. 8, pp. 243–249).

By: D. Seaman & R. Powell*

Ed(s): W. L. M. Darling & F. Dean

TL;DR: The Area Independent Method (AIM), a graphical and quantitative technique for identifying the pattern of home range use (i.e., clumped or even) and for distinguishing between heavily and lightly used parts of an individual's home range when clumping is present is presented. (via Semantic Scholar)
Source: NC State University Libraries
Added: August 6, 2018

1990 conference paper

Production of important black bear foods in the Southern Appalachians

In W. R. A. L. M. Darling & F. C. Dean (Eds.), Bears--their biology and management : eighth International Conference on Bear Research and Management : a selection of papers from the Conference held at Victoria, British Columbia, Canada, February 1989 (Vol. 8, pp. 183–187).

By: R. Powell* & D. Seaman

Ed(s): W. L. M. Darling & F. Dean

UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
Source: NC State University Libraries
Added: August 6, 2018

1989 chapter

Effects of resource productivity, patchiness and predictability on mating and dispersal strategies

In V. Standen & R. A. Foley (Eds.), Comparative socioecology : the behavioural ecology of humans and other mammals (pp. 101–123). Oxford; Boston: Blackwell Scientific Publications.

By: R. Powell

Ed(s): V. Standen & R. Foley

Source: NC State University Libraries
Added: August 6, 2018

1989 article

MINK RESPONSE TO ULTRASOUND IN THE RANGE EMITTED BY PREY

POWELL, R. A., & ZIELINSKI, W. J. (1989, August). JOURNAL OF MAMMALOGY, Vol. 70, pp. 637–638.

By: R. Powell n & W. Zielinski  n

TL;DR: La gamme d'emission d'ultra-sons testes correspond a celle emise par les proies potentielles de ces animaux. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
Source: Web Of Science
Added: August 6, 2018

1989 journal article

PHYSIOLOGICAL AND BEHAVIORAL-EFFECTS OF GUTHION ON PINE VOLES, MICROTUS-PINETORUM

BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY, 43(1), 80–86.

By: J. Durda  n, R. Powell n & G. Barthalmus n

MeSH headings : Acetylcholinesterase / metabolism; Animals; Arvicolinae / physiology; Azinphosmethyl / toxicity; Behavior, Animal / drug effects; Body Weight / drug effects; Brain / enzymology; Diet; Insecticides / toxicity; Social Behavior
TL;DR: Toxic effects in pine voles following Guthion spraying might be welcomed by growers, yet these effects may suggest toxicity to mammals and birds that interact in complex, ecologically beneficial ways. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1987 conference paper

Black bear home range overlap in North Carolina and the concept of home range applied to black bears

In P. E. Z. al. (Ed.), Bears--their biology and management : seventh International Conference on Bear Research and Management : a selection of papers from the Conference held at Williamsburg, Virginia, USA and Plitvice Lakes, Yugoslavia, February and March 1986 (Vol. 7, pp. 235–242).

By: R. Powell*

Ed(s): P. al.

Source: NC State University Libraries
Added: August 6, 2018

1987 chapter

Ursus americanus Pallas, black bear

In Endangered, threatened, and rare fauna of North Carolina (pp. 33–36). Raleigh, NC: North Carolina State Museum of Natural Sciences.

By: R. Powell

Source: NC State University Libraries
Added: August 6, 2018

1985 journal article

BLACK-FOOTED FERRET MUSTELA-NIGRIPES ENERGY-EXPENDITURE AND PREY REQUIREMENTS

BIOLOGICAL CONSERVATION, 34(1), 1–15.

By: R. Powell n, T. Clark*, L. Richardson & S. Forrest

TL;DR: The Siberian polecat M. eversmanni was used as a biological model for the endangered ferret to estimate energy and nutrient aquisition from two ferret prey species and gross energy content, proximate analyses and utilisation by the polecats of the two prey did not differ and were comparable to results for other carnivores. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

1985 journal article

Fisher pelt primeness

Wildlife Society Bulletin, 13, 67–70.

By: R. Powell

Source: NC State University Libraries
Added: August 6, 2018

1985 conference paper

Movements of black bears on the Pisgah National Forest

Proceedings of the ... Annual Conference, Southeastern Association of Fish and Wildlife Agencies, 39, 351–361.

By: G. Warburton & R. Powell

Source: NC State University Libraries
Added: August 6, 2018

1985 chapter

Niche spaces and small mammal communities

In R. A. Powell & M. Archer (Eds.), Form-function analyses: The teeth and skulls of carnivores: Special issue of Australian mammalogy. Bedford Park, Australia: Australian Mammal Society.

By: B. Fox & R. Powell

Ed(s): R. Powell & M. Archer

Source: NC State University Libraries
Added: August 6, 2018

1985 article

POSSIBLE PATHWAYS FOR THE EVOLUTION OF REPRODUCTIVE STRATEGIES IN WEASELS AND STOATS

OIKOS, Vol. 44, pp. 506–508.

By: R. Powell*

UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

1984 chapter

Martens and tayra

In Encyclopedia of mammals (pp. 118–119). London: Allen & Unwin.

By: R. Powell

Source: NC State University Libraries
Added: August 6, 2018

1983 journal article

Competition and coexistence in mustelid communities

Acta Zoologica Fennica, 174, 223–227.

By: R. Powell & W. Zielinski

Source: NC State University Libraries
Added: August 6, 2018

1983 journal article

SEXUAL DIMORPHISM AND ENERGY-EXPENDITURE FOR REPRODUCTION IN FEMALE FISHER MARTES-PENNANTI

OIKOS, 40(2), 166–174.

By: R. Powell* & R. Leonard

TL;DR: Estimates of energy expenditure and energy requirements of a free-living female mustelid during lactation support the hypothesis that sexual dimorphism in body size is related to energy budgets in the Mustelidae. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

1982 article

EVOLUTION OF BLACK-TIPPED TAILS IN WEASELS - PREDATOR CONFUSION

AMERICAN NATURALIST, Vol. 119, pp. 126–131.

By: R. Powell*

TL;DR: It is hypothesized that the black tail tip will draw the attention of a potential predator, especially a diurnal avian predator that hunts primarily by sight, away from the weasel's body to its tail, and reduce predation on weasels by other predators. (via Semantic Scholar)
UN Sustainable Development Goal Categories
14. Life Below Water (OpenAlex)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

1982 journal article

Ecological 'nonarguments' and human value judgements

Wildlife Society Bulletin, 10, 141.

By: R. Powell

Source: NC State University Libraries
Added: August 6, 2018

1982 article

PRAIRIE DOG COLONIALITY AND BLACK-FOOTED FERRETS

ECOLOGY, Vol. 63, pp. 1967–1968.

By: R. Powell*

UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

1982 book

The fisher: Life history, ecology and behavior

By: R. Powell*

Source: NC State University Libraries
Added: August 6, 2018

1982 journal article

The predator-prey concept in elementary education

Wildlife Society Bulletin, 10, 238–244.

By: C. Powell & R. Powell

Source: NC State University Libraries
Added: August 6, 2018

1981 conference paper

Fisher food requirements and hunting behavior

In J. A. Chapman & D. Pursley (Eds.), Worldwide Furbearer Conference proceedings, Aug. 3-11, 1980, Frostburg, Maryland (pp. 883–917). Baltimore, MD: Worldwide Furbearer Conference.

By: R. Powell

Ed(s): J. Chapman & D. Pursley

Source: NC State University Libraries
Added: August 6, 2018

1981 journal article

Martes pennanti

Mammalian Species, 156, 1–6.

By: R. Powell n

Source: NC State University Libraries
Added: August 6, 2018

1981 article

SMALL MAMMAL CHANGES IN POPULATIONS FOLLOWING TORNADO BLOWDOWN IN NORTHERN MIXED FOREST

JOURNAL OF MAMMALOGY, Vol. 62, pp. 397–400.

By: R. Powell n & W. Brooks  n

UN Sustainable Development Goal Categories
13. Climate Action (Web of Science; OpenAlex)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

1980 journal article

Fisher arboreal activity

Canadian Field-Naturalist, 94, 90–91.

By: R. Powell

Source: NC State University Libraries
Added: August 6, 2018

1980 journal article

STABILITY IN A ONE-PREDATOR-3-PREY COMMUNITY

AMERICAN NATURALIST, 115(4), 567–579.

By: R. Powell*

TL;DR: Five model predator- Prey communities, developed from the literature and based on the fisher-porcupine-snowshoe hare-deer carrion predator-prey community in Upper Peninsula Michigan, show stability in both one-predator-one-preying and one-Predator-three-preY forms. (via Semantic Scholar)
UN Sustainable Development Goal Categories
14. Life Below Water (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1980 journal article

The value of wildlife and wilderness

Wildlife Society Bulletin, 8, 79.

By: R. Powell

Source: NC State University Libraries
Added: August 6, 2018

1979 journal article

ECOLOGICAL ENERGETICS AND FORAGING STRATEGIES OF THE FISHER (MARTES-PENNANTI)

JOURNAL OF ANIMAL ECOLOGY, 48(1), 195–212.

By: R. Powell*

TL;DR: The energy budget model and field data are used to develop a simple optimal foraging strategy model for the fisher, which depends on estimated search times for each prey relative to estimated energy obtained from each prey but does not depend on handling times and handling energy expenditures. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1979 journal article

Fishers, population models and trapping

Wildlife Society Bulletin, 7, 149–154.

By: R. Powell

Source: NC State University Libraries
Added: August 6, 2018

1979 journal article

Mustelid spacing: Variations on a theme by Mustela

Zeitschrift Fur Tierpsychologie, 50, 153–165.

By: R. Powell

Source: NC State University Libraries
Added: August 6, 2018

1978 journal article

A comparison of fisher and weasel hunting behavior

Carnivore, 1(1), 28–34.

By: R. Powell

Source: NC State University Libraries
Added: August 6, 2018

1977 conference paper

Adaptations of fishers and porcupines to their predator-prey system

In R. L. Phillips & C. Jonkel (Eds.), Proceedings of the 1975 Predator Symposium, held in conjunction with the American Society of Mammalogists 55th annual meeting, June 16-19, 1975, University of Montana, Missoula (pp. 45–53). Missoula, MT: Montana Forest & Conservation Experiment Station, University of Montana.

By: R. Powell & R. Brander

Ed(s): R. Phillips & C. Jonkel

Source: NC State University Libraries
Added: August 6, 2018

1973 journal article

A model for raptor predation on weasels

Journal of Mammalogy, 54, 259–263.

By: R. Powell*

Source: NC State University Libraries
Added: August 6, 2018

1972 journal article

A comparison of populations of boreal red-backed vole (Clethrionomys gapperi) in tornado blowdown and standing forest

Canadian Field-Naturalist, 86, 377–379.

By: R. Powell

Source: NC State University Libraries
Added: August 6, 2018

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