EFFECTS OF ASSESSMENT FREQUENCY AND DATA-MANAGEMENT LAG ON FISHERY MANAGMEMENT PERFORMANCE: STRATEGIES FOR IMPROVEMENT
| dc.contributor.advisor | Wilberg, Michael J | en_US |
| dc.contributor.author | Sylvia, Andrea Lynn | en_US |
| dc.contributor.department | Marine-Estuarine-Environmental Sciences | en_US |
| dc.contributor.publisher | Digital Repository at the University of Maryland | en_US |
| dc.contributor.publisher | University of Maryland (College Park, Md.) | en_US |
| dc.date.accessioned | 2015-06-27T05:31:01Z | |
| dc.date.available | 2015-06-27T05:31:01Z | |
| dc.date.issued | 2015 | en_US |
| dc.description.abstract | Some challenges of using stock assessments in management decisions are data availability and the allocation of resources to conduct stock assessments in a frequent and timely manner. We conducted a simulation evaluation that included the population dynamics, stock assessment, and management. Our objectives were to 1) determine effects of assessment interval and data-management lag and 2) test methods to reduce data lag by using partial data in the last year of the assessment. We found that increasing assessment interval and data-management lag caused a decrease in average catch and biomass across scenarios, with data-management lag having a larger effect compared to assessment interval. To reduce the effects of data-management lag, lag reduction methods that included some information about the age-composition of the catch and survey performed about as well as not having lag. Stock assessment interval, data-management lag and lag reduction methods should be considered when designing fishery management plans. | en_US |
| dc.identifier | https://doi.org/10.13016/M2BS7B | |
| dc.identifier.uri | http://hdl.handle.net/1903/16694 | |
| dc.language.iso | en | en_US |
| dc.subject.pqcontrolled | Fisheries and aquatic sciences | en_US |
| dc.subject.pqcontrolled | Environmental studies | en_US |
| dc.subject.pquncontrolled | Data lag | en_US |
| dc.subject.pquncontrolled | Fisheries | en_US |
| dc.subject.pquncontrolled | Lag reduction methods | en_US |
| dc.subject.pquncontrolled | Stock assessmnet interval | en_US |
| dc.title | EFFECTS OF ASSESSMENT FREQUENCY AND DATA-MANAGEMENT LAG ON FISHERY MANAGMEMENT PERFORMANCE: STRATEGIES FOR IMPROVEMENT | en_US |
| dc.type | Thesis | en_US |
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