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L. D. Mech Critique of Our Work Lacks Scientific Validity

L. D. Mech Critique of Our Work Lacks Scientific Validity,10.2193/0091-7648(2006)34[878:LDMCOO]2.0.CO;2,Wildlife Society Bulletin,DAVID J. MLADENOFF,M

L. D. Mech Critique of Our Work Lacks Scientific Validity   (Citations: 5)
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An accompanying article in this issue of the Bulletin (Mech 2006) purports to critique our past research. L. D. Mech attempts to show that our model of prospective, preferred gray wolf (Canis lupus) habitat (Mladenoff et al. 1995, 1997, 1999, Mladenoff and Sickley 1998) has been incorrect. We first state clearly that we are not opposed to the re-assessment of our work based on new data. However we believe the Mech paper contains both serious conceptual and methodological flaws that render its conclusions invalid. Our own analysis, based on logic and current techniques (Mladenoff et al. 2005), shows that the model has behaved according to our predictions and continues to successfully predict wolf recolonization in Wisconsin, USA, over more than 25 years. However, the serious flaws of Mech (2006) alone show that he is incorrect in his putative critique of our work. (WILDLIFE SOCIETY BULLETIN 34(3):878-881; 2006)
Journal: Wildlife Society Bulletin - WILDLIFE SOC BULL , vol. 34, no. 3, pp. 878-881, 2006
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    • ...Mech’s critique (2006) of our modeling efforts was not based on sound analysis (Mladenoff et al. 2006) . Our analysis demonstrated the usefulness of our earlier model for predicting initial colonization and direction of habitat occupancy, and it continues to be robust...
    • ...We suggest that our current model reflects the result of strong source–sink dynamics (Pulliam 1988) as suggested by our earlier work (Mladenoff et al. 1995, 1999, 2006) . We hypothesize that our new model shows wolf occupancy under the influence of strong fecundity and available dispersers from core, more reliable habitat that is smaller and more fragmented in northern Wisconsin, and is more abundant in Minnesota and upper Michigan (Table ...

    David J. Mladenoffet al. Change in Occupied Wolf Habitat in the Northern Great Lakes Region

    • ...In northern Wisconsin, with intermediate RDs, 39–72% of wolf deaths were caused by humans from 1979 to1992 (Mladenoff et al. 1995, 1999, 2006 ; Wydeven et al. 1995) . Wydeven et al. (2001) reported that 60% of human-caused wolf mortality occurred at RDs >0.63 km/ km 2 , and “most shootings and vehicle collisions occurred at RDs of 0.84–1.14 km/km 2 .” Our data on the CFR wolf population support the notion that RDs affect survival of ...
    • ... RDs, 39–72% of wolf deaths were caused by humans from 1979 to1992 (Mladenoff et al. 1995, 1999, 2006 ; Wydeven et al. 1995) . Wydeven et al. (2001) reported that 60% of human-caused wolf mortality occurred at RDs >0.63 km/ km 2 , and “most shootings and vehicle collisions occurred at RDs of 0.84–1.14 km/km 2 .” Our data on the CFR wolf population support the notion that RDs affect survival of wolves and shape wolf distribution (Mladenoff et ...

    Richard P. Thielet al. An Isolated Wolf Population in Central Wisconsin

    • ...Regardless of the mechanism, research in the Great Lakes region has shown that high road densities limit habitat suitability for wolves and that major highway corridors can slow range expansion in recovering wolf populations (Thiel 1985 ; Jensen et al. 1986 ; Mech et al. 1988 ; Mladenoff et al. 1995, 2006 ; Mladenoff and Sickley 1998) . In this chapter, we summarize what biologists in the upper Great Lakes region have learned over the past ...
    • ...Biologists in the upper Great Lakes region, first to recognize and publish this hypothesis, have used road density to measure the suitability of a landscape to support viable wolf populations (Thiel 1985 ; Jensen et al. 1986 ; Mech et al. 1988 ; Mladenoff et al. 1995, 2006 ; Mladenoff and Sickley 1998) . Wolf habitat potentially becomes fragmented into smaller and less inhabitable parcels as road networks develop and improve (Mladenoff et ...
    • ...Mladenoff et al. (2006) conceded that their model was based on data from early colonizers with little or no competition in selecting unoccupied space...
    • ...Lakes region provided users understand its limitations (Mladenoff et al. 1995, 1999, 2006 ; Wydeven et al. 2001) . However, use of the model outside of the upper Great Lakes region should be rigorously tested prior to application (Haight et al. 1998 ; Mladenoff and Sickley 1998) ...

    Bruce E. Kohnet al. Wolves, Roads, and Highway Development

    • ...Rigorous classification of this habitat with respect to quality for wolves is controversial (Mech 2006 ; Mladenoff et al. 2006) . Nonetheless, relative to other parts of midwestern North America, northern Wisconsin and Upper Michigan have low road densities, low human densities, and high deer populations (Haight et al. 1998 ; Mladenoff et al. 1995, 1999) . Collectively, these habitat features (Mladenoff et al. 1995, 1999) and legal ...

    Timothy R. Van Deelen. Growth Rate and Equilibrium Size of a Recolonizing Wolf Population in ...

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