期刊论文详细信息
Endangered Species Research
Monitoring changes in the catch rates and abundance of juvenile goliath grouper using the ENP creel survey, 1973–2006
Thomas W. Schmidt1  Shannon L. Cass-Calay1 
关键词: Goliath grouper;    Jewfish;    Epinephelus itajara;    Delta-lognormal abundance index;   
DOI  :  10.3354/esr00139
学科分类:动物科学
来源: Inter-Research
PDF
【 摘 要 】

ABSTRACT: In early 2006, NOAA National Marine Fisheries Service removed goliath grouper from its list of species of concern. It cited a recent status report that showed a significant increase in the abundance of the USA population and suggested that goliath grouper are re-establishing themselves throughout their historic range. However, under the Magnuson-Stevens Conservation Act, the goliath grouper remains ‘overfished,’ and harvest is still illegal. The historical center of abundance of goliath grouper is the Ten Thousand Islands area of southwest Florida. Detailed catch and effort data are available from this region for 1973 to 2006. The data were collected by Everglades National Park (ENP) officials during voluntary dockside interviews of sport fishermen. Using this data, a standardized index of abundance was created for juvenile goliath grouper. The index shows a substantial decline in abundance during the late 1970s and early 1980s. Since that time, the abundance of juveniles within ENP has increased considerably, suggesting that strong year classes have recently occurred in ENP. This information is useful for managers and stock assessment biologists tasked to evaluate the stock status of goliath grouper, and to determine acceptable harvest levels for scientific research and/or fishing.

【 授权许可】

Unknown   

【 预 览 】
附件列表
Files Size Format View
RO201912080708464ZK.pdf 373KB PDF download
  文献评价指标  
  下载次数:12次 浏览次数:63次