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Citizen based monitoring and the charismatic megafauna of Wisconsin. Timothy Van Deelen David MacFarland University of Wisconsin at Madison. ALLposters.com. Charismatic megafauna.
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Citizen based monitoring and the charismatic megafauna of Wisconsin Timothy Van Deelen David MacFarland University of Wisconsin at Madison ALLposters.com
Charismatic megafauna charismatic megafaunanoun. Animals that have popular appeal and so can form the basis of conservation campaigns and fundraising drives.
Early population influences • Native American hunting • Fur trade • Logging • Settlement • Market hunting
Increasing regulation Ecologically meaningful DMUs Mandatory harvest registration Variable quotas Sex-Age-Kill Early 20th Century to now
Plastic food habits... Survey of National Park Managers: 98 species of plants threaten by overabundant deer in human-influenced landscapes (Miller et al. 1992)
University of Wisconsin-Madison Archives “This effect of too many deer on the ground flora of the forest deserves special mention because it is an elusive burglary of esthetic wealth, the more dangerous because unintentional and unseen…” - Leopold
Recent population trend R. Rolley WI DNR
Large animal life table, r = -0.10 Notation follows Caughley, 1977. Analysis of vertebrate populations
The expanded life table Generation time: G=Σl(x)m(x)x/Σl(x)m(x) Net reproductive rate: Ro= Σl(x)m(x) r ≈ ln(Ro)/G Euler-Lotka equation: Σl(x)m(x)exp(-rx) = 1
Petersen Population Estimate from Tetracycline Marking No. bears in pop. (N) No. samples examined (n) —————————— = ———————————— No. marked in pop. (M) No. marked in sample (m) Nest=M * (n/m)
Next generation payoffs of Citizen-Based MonitoringSome examples
What’s more effective baiting or T-zones? T-zone Baiting Change in harvest
How do wolves impact the growth of the deer population?(± 1 SE)