FL Fisheries Independent Monitoring Inshore Stratified-Random Sampling Records

The Fisheries-Independent Monitoring (FIM) program is a long-term program designed to monitor the relative abundance of fishery resources in Florida’s major estuarine, coastal, and reef systems. Data collected by fisheries-independent methods avoid many of the problems that are inherent in fisheries-dependent (FD) data, such as changes in vessel types, fleet size, fishing gear, methods of operation, closed seasons, and size and bag limits. Florida’s Inshore FIM program uses a Stratified-Random-Sampling (SRS) approach in its survey design. The SRS design reduce statistical error in abundance estimates by distributing sampling effort among the available geographic and habitat strata. The FIM program divides each selected survey region into zones based on logistical and hydrological characteristics. The habitat types (i.e., depth, seagrass beds, shore type) available within each zone are identified and assigned as strata. Monthly sampling is then conducted by the FIM program at sites randomly selected from the strata available witin each zone. Sound management is required to preserve the health of Florida's marine environment for our present and future enjoyment. The Fisheries-Independent Monitoring program provides data and analyses of fishery stocks that are needed to determine necessary fisheries management measures and to assess the effectiveness of those measures after they have been enacted.渔业独立监测（Fisheries-Independent Monitoring, FIM）计划是一项长期项目，旨在监测佛罗里达州主要河口、近岸及礁体系统内渔业资源的相对丰度。采用渔业独立监测方法采集的数据，可规避诸多依赖渔业（Fisheries-Dependent, FD）数据固有的问题，例如作业船型变化、船队规模变动、渔具类型、作业方式、休渔期以及体长限制与每日渔获限额。佛罗里达州近岸FIM计划在调查设计中采用分层随机抽样（Stratified-Random-Sampling, SRS）方法。该SRS设计通过将采样投入分配至现有地理与生境分层单元中，有效降低了丰度评估的统计误差。FIM计划依据后勤与水文特征，将每个选定的调查区域划分为若干分区。随后对每个分区内的生境类型（即水深、海草床、岸线类型）进行识别，并将其划分为生境分层单元。此后，FIM计划每月从每个分区的可用生境分层单元中随机选取采样点开展采样工作。为保障佛罗里达海洋环境的健康，以供当下及后世享用，需实施科学的管理措施。渔业独立监测计划可提供渔业种群的数据与分析结果，用于确定必要的渔业管理方案，并在方案实施后评估其实施效果。