Evaluation of Sampling Methods and Habitat Use of Missouri 1xbet online casino Fishes
Investigators: 
Joshua Schloesser, M.S. student
Dr. Craig Paukert
Project Supervisor:
Dr. Craig Paukert
Funding:
US Geological Survey, SSP Program Cooperators
US Army Corps of Engineers
US Fish & Wildlife Service
1xbet online casino Department of Conservation
Nebraska Game and Parks Commission
Location:
Missouri 1xbet online casino , lower 1,207 km in
1xbet online casino and Nebraska
Completion:
September 2008
Objectives:
Determine the most appropriate gears, mesh sizes, and deployment strategy to sample 25 species of Missouri 1xbet online casino fishes with the goal of detecting trends in abundance.
Determine if Missouri 1xbet online casino fishes associate with specific habitats and how these change along a latitudinal gradient.
Progress and Results:
Evaluating gear bias in large scale monitoring programs can help refine sampling protocols to increase the ability to detect trends in abundance. We sampled 210 1xbet online casino bends (each bend averages 3.5 rkm) in the lower 1,207 km of the Missouri 1xbet online casino as part of the pallid sturgeon monitoring and assessment program using gill nets, trammel nets, otter trawls, and mini fyke nets during 2003-2006. Occupancy modeling was used to estimate detection probabilities (p) by gear type for each species' maturity class (juvenile and adult) from its presence or absence at each sampled 1xbet online casino bend. Generally gill nets were most effective for sampling large bodied fishes and otter trawls and mini fyke nets were most effective for small-bodied fishes. Since detection probabilities generally differed among species' maturity class and gear type, it is necessary to sample with multiple gears to adequately monitor the entire fish community in the Missouri 1xbet online casino . Final sampling recommendations for detecting trends in abundance will favor gears with the highest detection probabilities and lowest variability (e.g. coefficient of variation) in catch per unit effort.
Products:
Schloesser, J. T., C. P. Paukert, W. J. Doyle, T. D. Hill, K. D. Steffensen, and V. H. Travnichek. 2012. Fish assemblages at engineered and natural channel structures in the Lower Missouri 1xbet online casino : implications for modified dike structures. 1xbet online casino Research and Applications 28:1695-1707.
Schloesser, J. T., C. P. Paukert, W. J. Doyle, T. D. Hill, K. D. Steffensen, and V. H. Travnichek. 2012. Heterogeneous detection probabilities for imperiled Missouri 1xbet online casino fishes: implications for large 1xbet online casino monitoring programs. Endangered Species Research 16:211-224.
Schloesser, J. T., and C. P. Paukert. 2008. The use of occupancy modeling to aid the Missouri 1xbet online casino pallid sturgeon monitoring program. Missouri 1xbet online casino Natural Resources Conference, Nebraska City, NE.
Schloesser, J. T., C. Paukert, W. Doyle, T. Hill, G. Mestl, and V. Travnichek. 2008. Comparison of sampling gear detection probabilities and variability for Missouri 1xbet online casino fishes. Kansas Natural Resources Conference, Wichita, KS.
Schloesser, J. T., C. Paukert, W. Doyle, T. Hill, G. Mestl, and V. Travnichek. 2007. Probability of detection and catch rate variability by gear type for Missouri 1xbet online casino fishes. Midwest Fish and Wildlife Conference, Madison, WI.
Schloesser, J. T., J. Finley, C. P. Paukert, W. Doyle, and T. Hill. 2007. Comparison between push trawls and mini fyke nets to sample shallow water fish communities. American Fisheries Society National Meeting, San Francisco, CA.
Schloesser, J. T., J. Finley, C. P. Paukert, W. Doyle, and T. Hill. 2007. Comparison between push trawls and mini fyke nets to sample shallow water fish communities. Missouri 1xbet online casino Natural Resources Conference & BiOp Forum, Nebraska City, NE.
