Document Type

Data

Department/Program

Virginia Institute of Marine Science

Publication Date

1-2016

Spatial Information

Virginia waters of the Chesapeake Bay

Description

DDG_Data.csv: This file contains data used to estimate a statistical harvest model and evaluate the economic impacts of the Virginia Marine Debris Removal Program. The following variables are included: annual observations of blue crab harvests and effort by management area; annual blue crab abundance estimates; derelict pot removals by management area and year (2009-2014). Variable definitions: management area/waterbody (WB); year (YEAR); lbs of harvest (LBS); pots used in harvest (POTS); number of crab (CRAB); derelict pot removals (RMVS). DDG_TLModel.R: This file contains R code used to estimate a translog production model of blue crab harvest which incorporates derelict gear removals. Also included is code to perform a semi-parametric bootstrap of model parameters and estimate mean harvest effects resulting from derelict gear removals. The file can be opened in a variety of text editors and should be executed within the R software environment (www.r-project.org).

DOI

https://doi.org/10.21220/V5K30P

Keywords

Chesapeake Bay, Crab fishery, Crab Pots, Derelict fishing gear, Fishery production model, Economic assessment

Creative Commons License

Creative Commons Attribution 3.0 License
This work is licensed under a Creative Commons Attribution 3.0 License.

Associated Publications

Scheld, A.M., Bilkovic, D.M. and Havens, K.J. (2016). The Dilemma of Derelict Gear. Science Reports. 6, 19671; doi: 10.1038/srep19671

Funding

Data collection was funded by NOAA/NMFS through fisheries disaster relief and also by NFWF and the Office of the Virginia Secretary of Natural Resources. This research was supported by NOAA Marine Debris Program.

Additional Files
DDG_Data.csv (63 kB)
Statistical harvest model data
DDG_TLModel.R (2 kB)
Translog production model
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