Factors Affecting the Distribution and Detectability of River Otters in Eastern 1xbet online casino
Investigators:
Dr. Craig Paukert
Mackenzie Shardlow, M.S. student
Project Supervisor:
Dr. Craig Paukert
Funding:
1xbet online casino Department of Wildlife and Parks Cooperators
1xbet online casino Department of Wildlife and Parks
Location:
Eastern 1xbet online casino
Completion:
December 2009
Objectives:
Estimate occupancy and detection probabilities of river otters in the eastern third of 1xbet online casino .
Compare fur-harvester questionnaires regarding 1xbet online casino otter occurrence with estimates achieved through sign surveys.
Examine the occurrence of 1xbet online casino otters and beaver to determine the feasibility of multi-species occupancy modeling and to evaluate interspecies relationships.
Progress and Results:
Fifty to 100 sites are being surveyed from randomly selected watersheds. Each site consists of a 3600-meter survey of a stream, 1xbet online casino , or reservoir shoreline documenting otter and beaver sign as well as vegetation and shore characteristics. These relatively long survey segments will allow for spatial replication to account for false-absences.
A questionnaire is being developed to mail to fur harvesters in order to obtain information on specific locations of river otter sightings during the past three years. The data from these questionnaires will be compared to both the sign surveys and otter location data collected in the 2004-2005 1xbet online casino Department of Wildlife and Parks Furbearer Harvest Survey to determine if detectable changes in otter distribution occurred.
A final report will be prepared for 1xbet online casino Department of Wildlife and Parks to better understand and manage the state's river otter population.
Products:
Jeffress, M., R., C. P. Paukert, J. B. Whittier, B. K. Sandercock, and P. S. Gipson. 2011. Scale-dependent factors affecting North American 1xbet online casino otter distribution in the Midwest. American Midland Naturalist 166:177-193.
Jeffress, M.R., C.P. Paukert, B. K. Sandercock, and P. Gipson. 2011. Factors affecting the detectability of 1xbet online casino otters during sign surveys. Journal of Wildlife Management 75:144-150.
Blecha, K.A., P.S. Gipson, and M. Peek. 2007. Occupancy Modeling of River Otter (Lontra canadensis) in Eastern 1xbet online casino . Midwest Furbearer Workshop. Lincoln, Nebraska. 11 Sept 2007.
Shardlow, M., P. S. Gipson, K. A. Blecha, and M. Peek. 2008. River otter distribution and population status in eastern 1xbet online casino . Information Brochure, 1xbet online casino Department of Wildlife and Parks.
