Recent Submissions

  • Fractal analysis measures habitat use at different spatial scales: an example with American marten 

    Nams, Vilis O., and Maryse Bourgeois. 2004. "Fractal analysis measures habitat use at different spatial scales: an example with American marten." Canadian journal of zoology 82(11): 1738-1747.
    No abstract available.
  • The effects of NPK fertilization for nine years on boreal forest vegetation in northwestern Canada 

    Turkington, R., E. John, C. J. Krebs, M. R. T. Dale, et al. 1998. "The effects of NPK fertilization for nine years on boreal forest vegetation in northwestern Canada." Journal of Vegetation Science 9(3): 333-346.
    Plant productivity is limited by mineral nutrient availability in many boreal forest ecosystems. This study is an analysis of the growth responses of components of a boreal plant community (cryptogams, herbaceous and ...
  • The effect of phenotypic traits and external cues on natal dispersal movements 

    del Mar Delgado, Maria, Vincenzo Penteriani, Eloy Revilla, and Vilis O. Nams. 2010. "The effect of phenotypic traits and external cues on natal dispersal movements." Journal of Animal Ecology 79(3): 620-632.
    P>1. Natal dispersal has the potential to affect most ecological and evolutionary processes. However, despite its importance, this complex ecological process still represents a significant gap in our understanding of ...
  • Tortuosity in Movement Paths Is Related to Cognitive Impairment Wireless Fractal Estimation in Assisted Living Facility Residents 

    Kearns, W. D., V. O. Nams, and J. L. Fozard. 2010. "Tortuosity in Movement Paths Is Related to Cognitive Impairment Wireless Fractal Estimation in Assisted Living Facility Residents." Methods of information in medicine 49(6): 592-598.
    Background Using traditional assessment procedures prior research demonstrated that deficiencies in gait and balance occur in the later stages of dementia Objective We tested the hypothesis that an automated system capable ...
  • How red backed voles find habitat patches 

    Gillis, E. A., and V. O. Nams. 1998. "How red backed voles find habitat patches." Canadian Journal of Zoology-Revue Canadienne De Zoologie 76(5): 791-794.
    The purpose of this study was to discover how red-backed voles (Clethrionomys gapperi pallescens) found preferred habitat patches. Two hypotheses tested were that voles discover habitat patches by chance, and that they ...
  • Second cropping of wild blueberries - Effects of management practices 

    Eaton, Leonard J., and Vilis O. Nams. 2006. "Second cropping of wild blueberries - Effects of management practices." Canadian Journal of Plant Science 86(4): 1189-1195.
    Wild blueberries (Vaccinium angustifolium Ait.) are normally managed on a biennial basis. Pruning forces the plant into a vegetative year without fruit, followed by the first crop year, which provides the greatest harvest. ...
  • Hexazinone and Fertilizer Impacts on Sheep Sorrel (Rumex acetosella) in Wild Blueberry 

    Kennedy, Karen J., Nathan S. Boyd, and Vilis O. Nams. 2010. "Hexazinone and Fertilizer Impacts on Sheep Sorrel (Rumex acetosella) in Wild Blueberry." Weed Science 58(3): 317-322.
    Sheep sorrel is an invasive, creeping perennial weed of lowbush blueberry fields. It is one of the most prominent weeds in blueberry fields in Nova Scotia and is responsible for decreasing yields. Three levels of fertilizer ...
  • Determining the spatial scale for conservation purposes – an example with grizzly bears 

    Nams, Vilis O., Garth Mowat, and Michael A. Panian. 2006. "Determining the spatial scale for conservation purposes – an example with grizzly bears." Biological Conservation 128(1): 109-119.
    No abstract available.
  • Changes of movement patterns from early dispersal to settlement 

    del, Mar Delgado, Vincenzo Penteriani, Vilis O. Nams, and Letizia Campioni. 2009. "Changes of movement patterns from early dispersal to settlement." Behavioral Ecology & Sociobiology 64(1): 35-43.
    No abstract available.
  • Changes in Tracking Tube use by Small Mammals Over Time 

    Nams, Vilis O., Elizabeth A. Gillis, and Eric C. Hellgren. 2003. "Changes in Tracking Tube use by Small Mammals Over Time." Journal of mammalogy 84(4): 1374-1380.
    No abstract available.
  • Effects of Nitrogen-Fertilization on several Woody and Nonwoody Boreal Forest Species 

    Nams, V. O., N. F. G. Folkard, and J. N. M. Smith. 1993. "Effects of Nitrogen-Fertilization on several Woody and Nonwoody Boreal Forest Species." Canadian Journal of Botany-Revue Canadienne De Botanique 71(1): 93-97.
    The effects of three levels of fertilizer were tested on the growth of several woody and nonwoody plants from a boreal forest community in southwestern Yukon. The effects of fertilization were assessed by clipping ground ...
  • Nitrogen fertilization stimulates herbivory by snowshoe hares in the boreal forest 

    Nams, V. O., N. F. G. Folkard, and J. N. M. Smith. 1996. "Nitrogen fertilization stimulates herbivory by snowshoe hares in the boreal forest." Canadian Journal of Zoology-Revue Canadienne De Zoologie 74(1): 196-199.
    We fertilized small plots in the boreal forest of the southwestern Yukon, Canada, to see how herbivory was affected. We assessed snowshoe hare (Lepus americanus) activity by counting pellets, and estimated grazing on ...
  • What is Wrong with Error Polygons 

    Nams, V. O., and S. Boutin. 1991. "What is Wrong with Error Polygons." Journal of Wildlife Management 55(1): 172-176.
    The error polygon technique for measuring telemetry error is invalid for estimating precision of individual location estimates when > 2 bearings are used; it is valid only for estimating average precision over many ...
  • Emergent Properties of Patch Shapes Affect Edge Permeability to Animals 

    Nams, Vilis O.. 2011. "Emergent Properties of Patch Shapes Affect Edge Permeability to Animals." Plos One 6(7): 21886-e21886. doi:10.1371/journal.pone.0021886
    Animal travel between habitat patches affects populations, communities and ecosystems. There are three levels of organization of edge properties, and each of these can affect animals. At the lowest level are the different ...
  • Improving accuracy and precision in estimating fractal dimension of animal movement paths 

    Nams, Vilis O.. 2006. "Improving accuracy and precision in estimating fractal dimension of animal movement paths." Acta Biotheoretica 54(1): 1-11.
    It is difficult to watch wild animals while they move, so often biologists analyse characteristics of animal movement paths. One common path characteristic used is tortuousity, measured using the fractal dimension (D). ...
  • Detecting oriented movement of animals 

    Nams, Vilis O.. 2006. "Detecting oriented movement of animals." Animal Behaviour 72: 1197-1203.
    No abstract available.
  • The VFractal: A new estimator for fractal dimension of animal movement paths 

    Nams, V. O.. 1996. "The VFractal: A new estimator for fractal dimension of animal movement paths." Landscape Ecology 11(5): 289-297.
    Fractal measurements of animal movement paths have been used to analyze how animals view habitats at different spatial scales. One problem has been the absence of error estimates for fractal d estimators. To address this ...
  • Seedling establishment in a patchy environment 

    Nams, V. O., J. A. Antos, and G. A. Allen. 1998. "Seedling establishment in a patchy environment." Ecoscience 5(1): 86-94.
    Models of gene flow in plants have often assumed a homogeneous landscape in which seed survivorship is independent of dispersal distance. However, most landscapes are patchy, which may have important implications for ...
  • Increasing Sampling Efficiency of Lowbush Blueberries 

    Nams, V. O.. 1994. "Increasing Sampling Efficiency of Lowbush Blueberries." Canadian Journal of Plant Science 74(3): 573-576.
    Yield estimates of lowbush blueberries (Vaccinium angustifolium Ait.) are highly variable. Two techniques for estimating cover, and five quadrat sizes for estimating stem density were tested in an attempt to minimize ...
  • How fledglings explore surroundings from fledging to dispersal. A case study with Eagle Owls Bubo bubo 

    del Mar Delgado, Maria, Vincenzo Penteriani, and Vilis O. Nams. 2009. "How fledglings explore surroundings from fledging to dispersal. A case study with Eagle Owls Bubo bubo." Ardea 97(1): 7-15.
    Movement strategies are one of the primary mechanisms underlying animal survival. Despite the impressive amount of studies on animal movement during successive stages in the life history in birds, little is known about ...

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