Roger Powell Fraik, A. K., Facka, A. N., & Powell, R. A. (2023, March 20). Food and cover resources for small mammals on an industrially logged landscape in the Sierra Nevada of California. CANADIAN JOURNAL OF ZOOLOGY. https://doi.org/10.1139/cjz-2022-0154 Fraik, A. K., Facka, A. N., & Powell, R. A. (2023). 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. https://doi.org/10.1139/cjz-2022-0154473 Powell, R. A., Mansfield, S. A., & Rogers, L. L. (2022, October 5). Comparison of behaviors of black bears with and without habituation to humans and supplemental research feeding. JOURNAL OF MAMMALOGY. https://doi.org/10.1093/jmammal/gyac081 Green, D. S., Facka, A. N., Smith, K. P., Matthews, S. M., & Powell, R. A. (2022). Evaluating the efficacy of reintroducing fishers (Pekania pennanti) to a landscape managed for timber production. FOREST ECOLOGY AND MANAGEMENT, 511. https://doi.org/10.1016/j.foreco.2022.120089 Green, D. S., Martin, M. E., Powell, R. A., McGregor, E. L., Gabriel, M. W., Pilgrim, K. L., … Matthews, S. M. (2022). Mixed-severity wildfire and salvage logging affect the populations of a forest-dependent carnivoran and a competitor. ECOSPHERE, 13(1). https://doi.org/10.1002/ecs2.3877 Mansfield, S. A., Rogers, L. L., Robison, S., & Powell, R. A. (2021, December 15). Bed site selection by female North American black bears (Ursus americanus). JOURNAL OF MAMMALOGY. https://doi.org/10.1093/jmammal/gyab148 Gould, N. P., Powell, R., Olfenbuttel, C., & DePerno, C. S. (2021). Growth and reproduction by young urban and rural black bears. Journal of Mammalogy, 102(4), 1165–1173. https://doi.org/10.1093/jmammal/gyab066 Facka, A. N., & Powell, R. A. (2021). Intraspecific Competition, Habitat Quality, Niche Partitioning, and Causes of Intrasexual Territoriality for a Reintroduced Carnivoran. FRONTIERS IN ECOLOGY AND EVOLUTION, 9. https://doi.org/10.3389/fevo.2021.734155 Berlato, D., Bulman-Fleming, J., Clifford, C. A., Garrett, L., Intile, J., Jones, P., … Rasotto, R. (2021, April 23). Value, Limitations, and Recommendations for Grading of Canine Cutaneous Mast Cell Tumors: A Consensus of the Oncology-Pathology Working Group. VETERINARY PATHOLOGY, Vol. 4. https://doi.org/10.1177/03009858211009785 Smith, K. P., Facka, A. N., & Powell, R. A. (2020). 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. https://doi.org/10.1139/cjz-2019-0234 Green, D. S., Matthews, S. M., Swiers, R. C., Callas, R. L., Yaeger, J. S., Farber, S. L., … Powell, R. A. (2018). Dynamic occupancy modelling reveals a hierarchy of competition among fishers, grey foxes and ringtails. JOURNAL OF ANIMAL ECOLOGY, 87(3), 813–824. https://doi.org/10.1111/1365-2656.12791 Rockhill, A. P., Sollman, R., Powell, R. A., & DePerno, C. S. (2016). A Comparison of Survey Techniques for Medium- to Large-sized Mammals in Forested Wetlands. SOUTHEASTERN NATURALIST, 15(1), 175–187. https://doi.org/10.1656/058.015.0112 Proulx, G., & Powell, R. A. (2016, September 30). Build habitats, not fences, for caribou. https://doi.org/10.1126/science.aai9328 Stewart, W., Sharma, B., York, R., Diller, L., Hamey, N., Powell, R., & Swiers, R. (2016). Forestry. Ecosystems of California, 817–833. Facka, A. N., Lewis, J. C., Happe, P., Jenkins, K., Callas, R., & Powell, R. A. (2016). Timing of translocation influences birth rate and population dynamics in a forest carnivore. ECOSPHERE, 7(1). https://doi.org/10.1002/ecs2.1223 Laver, P. N., Powell, R. A., & Alexander, K. A. (2015). Screening GPS telemetry data for locations having unacceptable error. ECOLOGICAL INFORMATICS, 27, 11–20. https://doi.org/10.1016/j.ecoinf.2015.02.001 McVey, J. M., Cobb, D. T., Powell, R. A., Stoskopf, M. K., Bobling, J. H., Waits, L. P., & Moorman, C. E. (2013). Diets of sympatric red wolves and coyotes in northeastern North Carolina. JOURNAL OF MAMMALOGY, 94(5), 1141–1148. https://doi.org/10.1644/13-mamm-a-109.1 Scarlata, C. D., Elias, B. A., Godwin, J. R., Powell, R. A., Shepherdson, D., Shipley, L. A., & Brown, J. L. (2013). Influence of environmental conditions and facility on faecal glucocorticoid concentrations in captive pygmy rabbits (Brachylagus idahoensis). ANIMAL WELFARE, 22(3), 357–368. https://doi.org/10.7120/09627286.22.3.357 Rockhill, A. P., DePerno, C. S., & Powell, R. A. (2013). The Effect of Illumination and Time of Day on Movements of Bobcats (Lynx rufus). PLoS ONE, 8(7), e69213. https://doi.org/10.1371/journal.pone.0069213 Lewis, J. C., Powell, R. A., & Zielinski, W. J. (2012). Carnivore Translocations and Conservation: Insights from Population Models and Field Data for Fishers (Martes pennanti). PLOS ONE, 7(3). https://doi.org/10.1371/journal.pone.0032726 Powell, R. A. (2012). Diverse perspectives on mammal home ranges or a home range is more than location densities. JOURNAL OF MAMMALOGY, 93(4), 887–889. https://doi.org/10.1644/12-mamm-5-060.1 Mitchell, M. S., & Powell, R. A. (2012). Foraging optimally for home ranges. JOURNAL OF MAMMALOGY, 93(4), 917–928. https://doi.org/10.1644/11-mamm-s-157.1 Scarlata, C. D., Elias, B. A., Godwin, J. R., Powell, R. A., Shepherdson, D., Shipley, L. A., & Brown, J. L. (2012). Relationship between fecal hormone concentrations and reproductive success in captive pygmy rabbits (Brachylagus idahoensis). JOURNAL OF MAMMALOGY, 93(3), 759–770. https://doi.org/10.1644/11-mamm-a-223.1 Powell, R. A. (2012). Those puppy-dog eyes. https://doi.org/10.1511/2012.98.355 Powell, R. A., & Mitchell, M. S. (2012). What is a home range? JOURNAL OF MAMMALOGY, 93(4), 948–958. https://doi.org/10.1644/11-mamm-s-177.1 Rockhill, A. P., Chinnadurai, S. K., Powell, R. A., & DePerno, C. S. (2011). A COMPARISON OF TWO FIELD CHEMICAL IMMOBILIZATION TECHNIQUES FOR BOBCATS (LYNX RUFUS). JOURNAL OF ZOO AND WILDLIFE MEDICINE, 42(4), 580–585. https://doi.org/10.1638/2010-0152.1 Biggins, D. E., Hanebury, L. R., Miller, B. J., & Powell, R. A. (2011). Black-footed ferrets and Siberian polecats as ecological surrogates and ecological equivalents. JOURNAL OF MAMMALOGY, 92(4), 710–720. https://doi.org/10.1644/10-mamm-s-110.1 Scarlata, C. D., Elias, B. A., Godwin, J. R., Powell, R. A., Shepherdson, D., Shipley, L. A., & Brown, J. L. (2011). Characterizing gonadal and adrenal activity by fecal steroid analyses in pygmy rabbits (Brachylagus idahoensis). GENERAL AND COMPARATIVE ENDOCRINOLOGY, 171(3), 373–380. https://doi.org/10.1016/j.ygcen.2011.03.002 King, C. M., & Powell, R. A. (2011). 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. https://doi.org/10.1007/s10530-011-9993-y Morales, J. M., Moorcroft, P. R., Matthiopoulos, J., Frair, J. L., Kie, J. G., Powell, R. A., … Haydon, D. T. (2010). [Review of Building the bridge between animal movement and population dynamics]. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, 365(1550), 2289–2301. https://doi.org/10.1098/rstb.2010.0082 Gaillard, J.-M., Hebblewhite, M., Loison, A., Fuller, M., Powell, R., Basille, M., & Van Moorter, B. (2010). [Review of Habitat-performance relationships: finding the right metric at a given spatial scale]. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, 365(1550), 2255–2265. https://doi.org/10.1098/rstb.2010.0085 Kie, J. G., Matthiopoulos, J., Fieberg, J., Powell, R. A., Cagnacci, F., Mitchell, M. S., … Moorcroft, P. R. (2010). 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. https://doi.org/10.1098/rstb.2010.0093 Cagnacci, F., Boitani, L., Powell, R. A., & Boyce, M. S. (2010). 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. Cattet, M., Boulanger, J., Stenhouse, G., Powell, R. A., & Reynolds-Hogland, M. L. (2008). An evaluation of long-term capture effects in ursids: Implications for wildlife welfare and research. JOURNAL OF MAMMALOGY, 89(4), 973–990. https://doi.org/10.1644/08-MAMM-A-095.1 Mitchell, M. S., & Powell, R. A. (2008). Estimated home ranges can misrepresent habitat relationships on patchy landscapes. ECOLOGICAL MODELLING, 216(3-4), 409–414. https://doi.org/10.1016/j.ecolmodel.2008.05.001 Mitchell, M. S., & Powell, R. A. (2007). Optimal use of resources structures home ranges and spatial distribution of black bears. ANIMAL BEHAVIOUR, 74, 219–230. https://doi.org/10.1016/j.anbehav.2006.11.017 Reynolds-Hogland, M. J., Mitchell, M. S., Powell, R. A., & Brown, D. C. (2007). Selection of den sites by black bears in the southern Appalachians. JOURNAL OF MAMMALOGY, 88(4), 1062–1073. https://doi.org/10.1644/06-MAMM-A-329R1.1 King, C. M., & Powell, R. A. (2007). The natural history of weasels and stoats: Ecology, behavior, and management. Oxford; New York: Oxford University Press. Wittmer, H. U., Powell, R. A., & King, C. M. (2007). Understanding contributions of cohort effects to growth rates of fluctuating populations. JOURNAL OF ANIMAL ECOLOGY, 76(5), 946–956. https://doi.org/10.1111/j.1365-2656.2007.01274.x Reynolds-Hogland, M. J., Mitchell, M. S., & Powell, R. A. (2006). Spatio-temporal availability of soft mast in clearcuts in the Southern Appalachians. FOREST ECOLOGY AND MANAGEMENT, 237(1-3), 103–114. https://doi.org/10.1016/j.foreco.2006.09.035 Powell, R. A. (2005). Evaluating welfare of American black bears (Ursus americanus) captured in foot snares and in winter dens. JOURNAL OF MAMMALOGY, 86(6), 1171–1177. https://doi.org/10.1644/05-MAMM-A-014R2.1 Mitchell, M. S., & Powell, R. A. (2004). A mechanistic home range model for optimal use of spatially distributed resources. ECOLOGICAL MODELLING, 177(1-2), 209–232. https://doi.org/10.1016/j.ecolmodel.2004.01.015 Powell, R. A. (2004). 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). https://doi.org/10.1007/0-387-22691-5_6 Nasution, M. D., Brownie, C., Pollock, K. H., & Powell, R. A. (2004). 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. https://doi.org/10.1198/1085711043181 Kovach, A. I., & Powell, R. A. (2003). Effects of body size on male mating tactics and paternity in black bears, Ursus americanus. CANADIAN JOURNAL OF ZOOLOGY, 81(7), 1257–1268. https://doi.org/10.1139/Z03-111 Powell, R. A., Buskirk, S. W., & Zielinski, W. J. (2003). Fishers and martens. In Wild mammals of North America: Biology, management, and conservation (2nd ed.) (pp. 635–649). https://doi.org/10.4098/at.arch.94-47 Powell, R. A. (2003). 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. Mitchell, M. S., & Powell, R. A. (2003). Response of black bears to forest management in the southern Appalachian mountains. JOURNAL OF WILDLIFE MANAGEMENT, 67(4), 692–705. https://doi.org/10.2307/3802676 Powell, R. A., & Proulx, G. (2003). [Review of Trapping and marking terrestrial mammals for research: Integrating ethics, performance criteria, techniques, and common sense]. ILAR JOURNAL, 44(4), 259–276. https://doi.org/10.1093/ilar.44.4.259 Mitchell, M. S., Zimmerman, J. W., & Powell, R. A. (2002). Test of a habitat suitability index for black bears in the southern Appalachians. Wildlife Society Bulletin, 30(3), 794–808. Powell, R. A. (2001). Martens and tayra. In The mammal encyclopedia (2nd ed.). Oxford: Equinox. Powell, R. A. (2001). Who limits whom: Predators or prey? Endangered Species Update, 18, 98–102. Powell, R. A. (2000). 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). https://doi.org/10.2307/3803113 Steele, M. A., & Powell, R. A. (1999). 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. Powell, R. A. (1999). 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. Sorensen, V. A., & Powell, R. A. (1998). Estimating survival rates of black bears. CANADIAN JOURNAL OF ZOOLOGY, 76(7), 1335–1343. https://doi.org/10.1139/cjz-76-7-1335 Seaman, D. E., Griffith, B., & Powell, R. A. (1998). KERNELHR: a program for estimating animal home ranges. Wildlife Society Bulletin, 26(1), 95–100. Powell, R. A., & Mitchell, M. S. (1998). Topographical constraints and home range quality. ECOGRAPHY, 21(4), 337–341. https://doi.org/10.1111/j.1600-0587.1998.tb00398.x Powell, R. A., Zimmermann, J. W., & Seaman, D. E. (1997). Ecology and behaviour of North American black bears: Home ranges, habitat and social organization. London; New York: Chapman & Hall. Powell, R. A., & King, C. M. (1997). 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. https://doi.org/10.1006/bijl.1996.0154 Seaman, D. E., & Powell, R. A. (1996). Accuracy of kernel estimators for animal home range analysis. Ecology (Brooklyn, New York, N.Y.), 77, 2075–2085. Seaman, D. E., & Powell, R. A. (1996). An evaluation of the accuracy of kernel density estimators for home range analysis. ECOLOGY, 77(7), 2075–2085. https://doi.org/10.2307/2265701 Powell, R. A., Zimmerman, J. W., Seaman, D. E., & Gilliam, J. F. (1996). Demographic analyses of a hunted black bear population with access to a refuge. CONSERVATION BIOLOGY, 10(1), 224–234. https://doi.org/10.1046/j.1523-1739.1996.10010224.x ZIMMERMAN, J. W., & POWELL, R. A. (1995). RADIOTELEMETRY ERROR - LOCATION ERROR METHOD COMPARED WITH ERROR POLYGONS AND CONFIDENCE ELLIPSES. CANADIAN JOURNAL OF ZOOLOGY-REVUE CANADIENNE DE ZOOLOGIE, 73(6), 1123–1133. https://doi.org/10.1139/z95-134 POWELL, R. A. (1994). EFFECTS OF SCALE ON HABITAT SELECTION AND FORAGING BEHAVIOR OF FISHERS IN WINTER. JOURNAL OF MAMMALOGY, 75(2), 349–356. https://doi.org/10.2307/1382553 Powell, R. A. (1994). 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. Powell, R. A., & Zielinski, W. J. (1994). 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. Buskirk, S. W., & Powell, R. A. (1994). 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. Martens, sables and fishers: Biology and conservation. (1994). Ithaca, NY: Cornell University Press. Holmes, T., & Powell, R. A. (1994). 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. LAPASHA, D. G., & POWELL, R. A. (1994). PINE VOLE (MICROTUS-PINETORUM) MOVEMENT TOWARD AREAS IN APPLE ORCHARDS WITH REDUCED-POPULATIONS. JOURNAL OF HORTICULTURAL SCIENCE, 69(6), 1077–1082. https://doi.org/10.1080/00221589.1994.11516547 Powell, R. A. (1994). 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. Powell, R. A. (1994). 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. Powell, R. A. (1993). The fisher: Life history, ecology and behavior. (2nd ed.). Minneapolis: University of Minnesota Press. Powell, R. A. (1993). 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. Powell, R. A. (1992). 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. Steele, M. A., & Powell, R. A. (1992). Biogeography of small mammals in the Southern Appalachians: Patterns of local and regional abundance. Journal of the Pennsylvania Academy of Science, 64(suppl.), 207. POWELL, R. A., & FRIED, J. J. (1992). 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. https://doi.org/10.1093/beheco/3.4.325 Powell, R. A., Buskirk, S. W., & Jones, J. (1991). Symposium on the Biology and Management of Martens and Fishers: Abstracts of presentations. Laramie, WY: University of Wyoming. MILLER, B., BIGGINS, D., WEMMER, C., POWELL, R., HANEBURY, L., HORN, D., & VARGAS, A. (1990). DEVELOPMENT OF SURVIVAL SKILLS IN CAPTIVE-RAISED SIBERIAN POLECATS (MUSTELA-EVERSMANNI) .1. LOCATING PREY. JOURNAL OF ETHOLOGY, 8(2), 89–94. https://doi.org/10.1007/BF02350279 MILLER, B., BIGGINS, D., WEMMER, C., POWELL, R., CALVO, L., HANEBURY, L., & WHARTON, T. (1990). DEVELOPMENT OF SURVIVAL SKILLS IN CAPTIVE-RAISED SIBERIAN POLECATS (MUSTELA-EVERSMANNI) .2. PREDATOR AVOIDANCE. JOURNAL OF ETHOLOGY, 8(2), 95–104. https://doi.org/10.1007/BF02350280 HORNER, M. A., & POWELL, R. A. (1990). INTERNAL STRUCTURE OF HOME RANGES OF BLACK BEARS AND ANALYSES OF HOME-RANGE OVERLAP. JOURNAL OF MAMMALOGY, 71(3), 402–410. https://doi.org/10.2307/1381953 Seaman, D. E., & Powell, R. A. (1990). 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). https://doi.org/10.2307/3872925 Powell, R. A., & Seaman, D. E. (1990). 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). https://doi.org/10.2307/3872918 Powell, R. A. (1989). 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. POWELL, R. A., & ZIELINSKI, W. J. (1989, August). MINK RESPONSE TO ULTRASOUND IN THE RANGE EMITTED BY PREY. JOURNAL OF MAMMALOGY, Vol. 70, pp. 637–638. https://doi.org/10.2307/1381439 DURDA, J. L., POWELL, R. A., & BARTHALMUS, G. T. (1989). PHYSIOLOGICAL AND BEHAVIORAL-EFFECTS OF GUTHION ON PINE VOLES, MICROTUS-PINETORUM. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY, 43(1), 80–86. https://doi.org/10.1007/bf01702241 Powell, R. A. (1987). 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). https://doi.org/10.2307/3872630 Powell, R. A. (1987). 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. POWELL, R. A., CLARK, T. W., RICHARDSON, L., & FORREST, S. C. (1985). BLACK-FOOTED FERRET MUSTELA-NIGRIPES ENERGY-EXPENDITURE AND PREY REQUIREMENTS. BIOLOGICAL CONSERVATION, 34(1), 1–15. https://doi.org/10.1016/0006-3207(85)90054-0 Powell, R. A. (1985). Fisher pelt primeness. Wildlife Society Bulletin, 13, 67–70. Warburton, G. S., & Powell, R. A. (1985). Movements of black bears on the Pisgah National Forest. Proceedings of the ... Annual Conference, Southeastern Association of Fish and Wildlife Agencies, 39, 351–361. Fox, B., & Powell, R. A. (1985). 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. POWELL, R. A. (1985). POSSIBLE PATHWAYS FOR THE EVOLUTION OF REPRODUCTIVE STRATEGIES IN WEASELS AND STOATS. OIKOS, Vol. 44, pp. 506–508. https://doi.org/10.2307/3565792 Powell, R. A. (1984). Martens and tayra. In Encyclopedia of mammals (pp. 118–119). London: Allen & Unwin. Powell, R. A., & Zielinski, W. J. (1983). Competition and coexistence in mustelid communities. Acta Zoologica Fennica, 174, 223–227. POWELL, R. A., & LEONARD, R. D. (1983). SEXUAL DIMORPHISM AND ENERGY-EXPENDITURE FOR REPRODUCTION IN FEMALE FISHER MARTES-PENNANTI. OIKOS, 40(2), 166–174. https://doi.org/10.2307/3544579 POWELL, R. A. (1982). EVOLUTION OF BLACK-TIPPED TAILS IN WEASELS - PREDATOR CONFUSION. AMERICAN NATURALIST, Vol. 119, pp. 126–131. https://doi.org/10.1086/283897 Powell, R. A. (1982). Ecological 'nonarguments' and human value judgements. Wildlife Society Bulletin, 10, 141. POWELL, R. A. (1982). PRAIRIE DOG COLONIALITY AND BLACK-FOOTED FERRETS. ECOLOGY, Vol. 63, pp. 1967–1968. https://doi.org/10.2307/1940133 Powell, R. A. (1982). The fisher: Life history, ecology and behavior. https://doi.org/10.5962/bhl.title.42020 Powell, C. B., & Powell, R. A. (1982). The predator-prey concept in elementary education. Wildlife Society Bulletin, 10, 238–244. Powell, R. A. (1981). 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. Powell, R. A. (1981). Martes pennanti. Mammalian Species, 156, 1–6. https://doi.org/10.2307/3504050 POWELL, R. A., & BROOKS, W. S. (1981). SMALL MAMMAL CHANGES IN POPULATIONS FOLLOWING TORNADO BLOWDOWN IN NORTHERN MIXED FOREST. JOURNAL OF MAMMALOGY, Vol. 62, pp. 397–400. https://doi.org/10.2307/1380723 Powell, R. A. (1980). Fisher arboreal activity. Canadian Field-Naturalist, 94, 90–91. POWELL, R. A. (1980). STABILITY IN A ONE-PREDATOR-3-PREY COMMUNITY. AMERICAN NATURALIST, 115(4), 567–579. https://doi.org/10.1086/283580 Powell, R. A. (1980). The value of wildlife and wilderness. Wildlife Society Bulletin, 8, 79. POWELL, R. A. (1979). ECOLOGICAL ENERGETICS AND FORAGING STRATEGIES OF THE FISHER (MARTES-PENNANTI). JOURNAL OF ANIMAL ECOLOGY, 48(1), 195–212. https://doi.org/10.2307/4109 Powell, R. A. (1979). Fishers, population models and trapping. Wildlife Society Bulletin, 7, 149–154. Powell, R. A. (1979). Mustelid spacing: Variations on a theme by Mustela. Zeitschrift Fur Tierpsychologie, 50, 153–165. Powell, R. A. (1978). A comparison of fisher and weasel hunting behavior. Carnivore, 1(1), 28–34. Powell, R. A., & Brander, R. B. (1977). 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. Powell, R. A. (1973). A model for raptor predation on weasels. Journal of Mammalogy, 54, 259–263. https://doi.org/10.2307/1378888 Powell, R. A. (1972). A comparison of populations of boreal red-backed vole (Clethrionomys gapperi) in tornado blowdown and standing forest. Canadian Field-Naturalist, 86, 377–379.