Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16785
Testing and refining the Ohio Nowcast at two Lake Erie beaches— 2008
The Ohio Nowcast has been providing real-time beach advisories to the public on the basis of predictive models since 2006. In support of the nowcast, data were collected during the recreational season of 2008 to validate and refine predictive models at two Lake Erie beaches. Predictive models yield data on the probability that the single-sample bathing-water standard for E. coli will be exceeded.
Authors
Donna S. Francy, Erin E. Bertke, Robert A. Darner
Web-Based Geospatial Tools to Address Hazard Mitigation, Natural Resource Management, and Other Societal Issues
Federal, State, and local government agencies in the United States face a broad range of issues on a daily basis. Among these are natural hazard mitigation, homeland security, emergency response, economic and community development, water supply, and health and safety services. The U.S. Geological Survey (USGS) helps decision makers address these issues by providing natural hazard assessments, info
Authors
Paul P. Hearn,
Woodcock in the Southeast: Natural history and management for landowners
No abstract available.
Authors
D.G. Krementz, J.J. Jackson
A generalized mixed effects model of abundance for mark-resight data when sampling is without replacement
In recent years, the mark-resight method for estimating abundance when the number of marked individuals is known has become increasingly popular. By using field-readable bands that may be resighted from a distance, these techniques can be applied to many species, and are particularly useful for relatively small, closed populations. However, due to the different assumptions and general rigidity o
Authors
B.T. McClintock, Gary C. White, K.P. Burnham, M.A. Pryde
Filling a void: abundance estimation of North American populations of arctic geese using hunter recoveries
We consider use of recoveries of marked birds harvested by hunters, in conjunction with continental harvest estimates, for drawing inferences about continental abundance of a select number of goose species. We review assumptions of this method, a version of the Lincoln?Petersen approach, and consider its utility as a tool for making decisions about harvest management in comparison to current sour
Authors
R.T. Alisauskas, K.L. Drake, J. D. Nichols
Inferences about landbird abundance from count data: recent advances and future directions
We summarize results of a November 2006 workshop dealing with recent research on the estimation of landbird abundance from count data. Our conceptual framework includes a decomposition of the probability of detecting a bird potentially exposed to sampling efforts into four separate probabilities. Primary inference methods are described and include distance sampling, multiple observers, time of d
Authors
J. D. Nichols, L. Thomas, P.B. Conn
Estimating latent time of maturation and survival costs of reproduction in continuous time from capture-recapture data
In many species, age or time of maturation and survival costs of reproduction may vary substantially within and among populations. We present a capture-mark-recapture model to estimate the latent individual trait distribution of time of maturation (or other irreversible transitions) as well as survival differences associated with the two states (representing costs of reproduction). Maturation ca
Authors
T. Ergon, Nigel G. Yoccoz, J. D. Nichols
Coastal wetlands: A synthesis
No abstract available.
Authors
E. Wolanski, M.M. Brinson, Donald R. Cahoon, G.M.E. Perillo
Methods for assessing the conservation value of rivers
No abstract available.
Authors
P.J. Boon, Mary C. Freeman
Evaluation of restored tidal freshwater wetlands
No abstract available.
Authors
A.H. Baldwin, R.S. Hammerschlag, Donald R. Cahoon
One size does not fit all: Adapting mark-recapture and occupancy models for state uncertainty
Multistate capture?recapture models continue to be employed with greater frequency to test hypotheses about metapopulation dynamics and life history, and more recently disease dynamics. In recent years efforts have begun to adjust these models for cases where there is uncertainty about an animal?s state upon capture. These efforts can be categorized into models that permit misclassification betw
Authors
W. L. Kendall