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Full-Text Articles in Life Sciences
Anthropogenic Disturbance And Population Viability Of Woodland Caribou In Ontario, John M. Fryxell, Tal Avgar, Boyan Liu, James A. Baker, Arthur R. Rodgers, Jennifer Shuter, Ian D. Thompson, Douglas E. B. Reid, Andrew M. Kittle, Anna Mosser, Steven G. Newmaster, Tom D. Nudds, Garrett M. Street, Glen S. Brown, Brent Patterson
Anthropogenic Disturbance And Population Viability Of Woodland Caribou In Ontario, John M. Fryxell, Tal Avgar, Boyan Liu, James A. Baker, Arthur R. Rodgers, Jennifer Shuter, Ian D. Thompson, Douglas E. B. Reid, Andrew M. Kittle, Anna Mosser, Steven G. Newmaster, Tom D. Nudds, Garrett M. Street, Glen S. Brown, Brent Patterson
Wildland Resources Faculty Publications
One of the most challenging tasks in wildlife conservation and management is to clarify how spatial variation in land cover due to anthropogenic disturbance influences wildlife demography and long‐term viability. To evaluate this, we compared rates of survival and population growth by woodland caribou (Rangifer tarandus caribou) from 2 study sites in northern Ontario, Canada that differed in the degree of anthropogenic disturbance because of commercial logging and road development, resulting in differences in predation risk due to gray wolves (Canis lupus). We used an individual‐based model for population viability analysis (PVA) that incorporated adaptive patterns …
Growth And Survival Of Colorado Squawfish In The Upper Colorado River, D. B. Osmundson, Ronald J. Ryel, T. E. Mourning
Growth And Survival Of Colorado Squawfish In The Upper Colorado River, D. B. Osmundson, Ronald J. Ryel, T. E. Mourning
Wildland Resources Faculty Publications
Growth and adult survival rates were estimated for the endangered Colorado squawfish Ptychocheilus lucius inhabiting the upper Colorado River by using data from fish captured during 1990–1995. Mean annual growth rates of fish aged 3–6 years ranged from 32.2 (age 6) to 82.0 (age 3) mm/year. Growth rates for older fish were highest for fish 400–449 mm total length, TL, (42.7 mm/year) and declined to 19.8 mm/year for fish 500–549 mm TL. Fish 550 mm and longer grew an average 9.5 mm/year. Survival rates for fish 550 mm and longer were estimated by comparing measured size distributions with simulated stable …