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Geostatistical Analysis of the Abundance and Winter Distribution Patterns of the Blue Crab Callinectes sapidus in Chesapeake Bay
| Content Provider | Semantic Scholar |
|---|---|
| Author | Jensen, Olaf P. Miller, Thomas J. |
| Copyright Year | 2005 |
| Abstract | Abstract Spatial heterogeneity is a striking life history feature of the blue crab Callinectes sapidus in the Chesapeake Bay. Spatial patterns of sex- and age-specific habitat use have been well documented and affect the fisheries in the bay. However, a quantitative assessment of the spatial distribution of blue crabs during winter, when they are generally buried in the sediments, has been lacking. We applied geostatistical techniques (variogram modeling and kriging) to 13 years of winter dredge survey (WDS) data to map patterns of blue crab winter abundance. These maps were then quantified to derive a time series of baywide abundance and to examine changing patterns of habitat use and aggregation. Geostatistical abundance estimates were generally similar to those calculated from design-based methods but were more highly correlated with fishery catch per unit of effort. Both abundance time series showed a large and significant decline from 1990 to 2002. Changes in spatial distribution were evaluated using... |
| Starting Page | 1582 |
| Ending Page | 1598 |
| Page Count | 17 |
| File Format | PDF HTM / HTML |
| DOI | 10.1577/T04-218.1 |
| Alternate Webpage(s) | http://hjort.cbl.umces.edu/crabs/docs/Jensen_Miller_2005.pdf |
| Alternate Webpage(s) | https://marine.rutgers.edu/~ojensen/Documents/Jensen_Miller_2005_TAFS.pdf |
| Alternate Webpage(s) | https://doi.org/10.1577/T04-218.1 |
| Volume Number | 134 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
