Opportunity at National Oceanic & Atmospheric Administration (NOAA)
Optimal Sampling Strategy for Assessment of Bering Sea and Gulf of Alaska Groundfish
National Marine Fisheries Service, Alaska Fisheries Science Center
||Seattle, WA 98112
|Hollowed, Anne Babcock
An opportunity is available for quantitative fishery scientists and ecologists with knowledge of age structured stock assessment methods, and sampling strategies. An evaluation of the sampling strategies used to assess the age composition of federally managed groundfish stocks off the coast of Alaska is needed to identify an optimal balance that provides the best available science for the greatest number of managed species. The analyst will assess the trade-offs between the number of age determinations processed and quality of age composition estimates for managed species based on a variety of attributes including: the value of the resource, difficulty in determining ages, and the role of the species in the ecosystem. The Associate will review the current age structure sampling strategies used by at-sea observers and field parties on AFSC surveys. The Associate will assess the efficiency of the current system with respect to collection of samples from target and non-target species. The Associate will also review existing information regarding the difficulty of age determination, the life history of the species, interannual variability in year-class strength and the ageing precision for the assessed species. The analyst will then conduct a statistical analysis of the trade-offs between the number of age determinations conducted and the representativeness of the samples as proxies for the true age composition of the population. The analyst will work with stock assessment scientists to assess how sampling errors, aging error and/or aging bias is treated in their assessments. Results will be presented to scientific advisory panels of the North Pacific Fishery Management Council. The successful applicant is expected to conduct original research related to improving stock assessment methods. Knowledge gained from this study will be utilized to improve the efficiency of the stock assessment enterprise while providing the best available scientific informaiton for stock assessments.
Hollowed AB, et al: Fisheries and Fisheries 12: 189, 2011
Stock assessment; Population dynamics; Optimal Sampling Strategy; Management strategy evaluation; Bering Sea Aleutian Islands; Groundfish; Gulf of Alaska;
Open to U.S. citizens, permanent residents and non-U.S. citizens
Open to Postdoctoral and Senior applicants
Postdoctoral and Senior Associates will receive an appropriately higher stipend based on the
number of years of experience past their PhD.