Health & Environmental Research Online (HERO)


Print Feedback Export to File
7274426 
Journal Article 
Fine-Scale Spatial and Temporal Variation in Fishing Mortality of Southern Flounder: Management Implications for a Dynamic Estuarine Fishery 
Scharf, FS; Craig, JK; Smith, WE; , 
2017 
1 
North American Journal of Fisheries Management
ISSN: 0275-5947
EISSN: 1548-8675 
TAYLOR & FRANCIS INC 
PHILADELPHIA 
1067-1074 
WOS:000412447600013 
Fish demography and the behavior of fishing fleets can vary across fine spatial and temporal scales, generating dynamic patterns of harvest that can impact both fishery yield and the conservation of stock biomass. We conducted a paired tag return experiment in spatially distinct estuarine fisheries during two consecutive years to examine temporal and spatial variation in harvest of a commercially exploited flatfish, the Southern Flounder Paralichthys lethostigma, in North Carolina. Monthly rates of instantaneous fishing mortality (F) varied across the fishing season in different ways, thus generating differences in total F between the two systems despite the fact that the fishery was concentrated in the warmer months and was dominated by the same gear in both systems. Recent patterns in fishing effort among gears and water bodies throughout the state illustrated seasonal and spatial variation that was produced mainly by gear type. Although current regulations in the Southern Flounder fishery recognize the existence of spatial differences in fishery selectivity and seasonality across North Carolina, fleet behavior has shown rapid and dynamic changes over time. When combined with recently documented fine-scale spatial variation in life history traits, these spatial patterns of effort and harvest that change in response to regulatory measures and socioeconomic drivers can potentially influence-in ways that are difficult to predict-the ability of managers to achieve harvest and conservation goals.