An exploration of the spatiotemporal distribution of snow crab (Chionoecetes opilio) in the eastern Bering Sea: 1982 ? 2018 ...
Snow crab, Chionoecetes opilio, is the largest commercial crab fishery in Alaska. Populations in the eastern Bering Sea have fluctuated over space and time, challenging statisticians attempting to model their distribution and predict stock trends to support sustainable management decisions. Climate...
| Main Author: | |
|---|---|
| Format: | Thesis |
| Language: | English |
| Published: |
University of Southern California Digital Library (USC.DL)
2021
|
| Subjects: | |
| Online Access: | https://dx.doi.org/10.25549/usctheses-c89-421464 https://digitallibrary.usc.edu/asset-management/2A3BF1WFW9HZ |
| Summary: | Snow crab, Chionoecetes opilio, is the largest commercial crab fishery in Alaska. Populations in the eastern Bering Sea have fluctuated over space and time, challenging statisticians attempting to model their distribution and predict stock trends to support sustainable management decisions. Climate change contributes to model uncertainty due to increased environmental variance and subsequent shifts in species assemblages adapting to changing conditions in the region. This research applied statistical toolkits and visualization techniques in GIS for spatiotemporal analysis of snow crab distribution in the eastern Bering Sea over thirty-seven years (1982 ? 2018). The National Marine Fisheries Service standardized bottom trawl survey provided a robust dataset to statistically explore spatial and temporal patterns and relationships between snow crab abundance in terms of catch per unit of effort to sea temperatures, depth, and Pacific cod abundance. The temporal correlation in abundance patterns between snow ... |
|---|