Hollywood Free Paper, April 1972

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Simon Says (Spring 2007)

Inside this issue: 2006 Library Survey CSU Libraries Host 6th Annual Research Forum Series New Information Commons Library Assistant CSU Archives Receives Award for Excellence in Archival Program Development Top Ten Assumptions for the Future of Academic Libraries CSU Libraries by the Numbers: FY 2006 ITS Supports Unique Instruction Requirements CSU’s Top 10 Circulating Books Updates from the Government Documents Department CSU Libraries Web Site Redesign Digitized Music: Listen Online National Library Week Activitieshttps://csuepress.columbusstate.edu/library_newsletters/1008/thumbnail.jp

What can the inverse relationship between sex ratios and calf:cow ratios, tell us about compensatory responses to hunting, in moose populations exposed to wolf predation?

Moose populations with low hunting pressure tend to have high sex ratios and low calf:cow ratios and hunted ones have low sex ratios and high calf:cow ratios. What causes this inverse relationship? I suggest that when hunting is male-biased, which it is in almost all populations; 1) the number of 10 year old or older moose and the overall sex ratio is reduced, 2) the number of wolves declines because old moose are more vulnerable to predation by wolves than prime age animals and wolf numbers are linearly related to the number of old moose, and 3) the fraction of moose calves in the population and the calf:cow ratio increases because with fewer wolves, calf survival increases. This process could partially or completely compensate for moose hunting mortality in moose-wolf ecosystems.</jats:p

Preface of Special Issue No. 7

There is a close association between caribou and people in the Northwest Territories. The workshop logo depicted that relationship and maintained our awareness of that fact throughout the workshop. We were happy to see that the public and interested groups from in and around Yellowknife took advantage of the opportunity to learn more about caribou biology and management. The entire second year class of the Renewable Resource Training Program from the Thebacha Campus of Arctic College in Fort Smith attended and both the Denendeh Conservation Board and the Beverly and Kaminuriak Caribou Management Board scheduled meetings in Yellowknife to correspond with this workshop

Preface of Special Issue No. 7

There is a close association between caribou and people in the Northwest Territories. The workshop logo depicted that relationship and maintained our awareness of that fact throughout the workshop. We were happy to see that the public and interested groups from in and around Yellowknife took advantage of the opportunity to learn more about caribou biology and management. The entire second year class of the Renewable Resource Training Program from the Thebacha Campus of Arctic College in Fort Smith attended and both the Denendeh Conservation Board and the Beverly and Kaminuriak Caribou Management Board scheduled meetings in Yellowknife to correspond with this workshop

Sex, Diet, and the Social Environment: Factors Influencing Hair Cortisol Concentration in Free-Ranging Black Bears (Ursus americanus).

Increasingly, measures of glucocorticoid levels (e.g., cortisol), key components of the neuroendocrine stress axis, are being used to measure past hypothalamic-pituitary-adrenal (HPA) activity to index psychological and physiological stress exhibited by wildlife for assessing individual and population-level well-being. However, many intrinsic and extrinsic factors affect HPA activity in animals. Using American black bears (Ursus americanus; n = 116) as an ecological model and hair cortisol concentration (HCC) as an integrative measure of past HPA activity, we evaluated the influence of diet, sex and the social environment on black bear HCC in a free-ranging population that spanned adjoining ecoregions with differing densities of potential conspecific and heterospecific competitors. HCC varied by sex, with female HCC ranging from 0.6 to 10.7 pg/mg (median = 4.5 ± 1.2 mean absolute deviation [MAD]) and male HCC ranging from 0.5 to 35.1 pg/mg (median = 6.2 ± 2.6 MAD). We also observed a three-way interaction among sex, δ14C and ecoregion, which may indicate that some differences in HCC between female and male black bears results from variability in the nutritional needs of larger-bodied males relative to smaller-bodied females, slight differences in food resources use between ecoregions as well as sex-based differences regarding the social environment. Once we understand what drives sex-specific differences in HCC, HCC may aid our understanding of the physiological responses by bears and other wildlife to diverse environmental challenges