当前位置: X-MOL 学术Aquat. Conserv. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Sustainability of a tropical, multispecies, multigear, coral‐reef‐associated fishery system is efficiently inferred with the direct use of long‐term port biosampling length records and life‐history traits, US Virgin Islands
Aquatic Conservation: Marine and Freshwater Ecosystems ( IF 2.4 ) Pub Date : 2019-03-19 , DOI: 10.1002/aqc.3047
Angela Dikou 1 , Tasha Corneille 1 , Kelly Carmody 1, 2
Affiliation  

  1. The fisheries system of the US Virgin Islands (USVI) provided the opportunity to examine decision‐making and to advise comparable fisheries throughout the tropics; it is well studied, thoroughly managed, and small in economic impact.
  2. To assess (multilevel modelling), evaluate (historical baselines and comparison of size frequency distributions), and explain (regression) the fisheries status synoptically, indicators of life history, ecological, and fishery traits were applied to a 26 year long and 104 species large port biosampling database.
  3. The fishery consists of stable, truncated, and overfished populations of exclusively K‐selected fish species. In particular, 45 (46.9%) of 96 species show significant but not biologically meaningful trends in mean standardized length of fish caught during a period of 30 years. Yet, 93 (90.2%) of 103 species are subject to persistent growth and/or recruitment overfishing. Also, both biological and economic overfishing are positively, significantly, and largely related with the K‐selected nature of these species.
  4. The results are corroborated by available contextual studies that demonstrate in synthesis the buffering effect of fisheries management. This employs various monitoring, regulatory, and enhancement tools to face its major challenges of data collection and quality improvement, local and regional environmental degradation from multiple anthropogenic and natural stressors, and non‐compliance. Yet, there have been increasing trends in human population size, fishing effort, and total commercial landings, decreasing trends in the catch per unit of effort, changes in the relative composition of the catch during the last 40 years, and collapsed or on the verge of collapse fished species since the 1970s have not yet recovered.
  5. The USVI fisheries system would benefit from redesigning regulation of input and output controls and upgrading the environmental baseline using the ecosystem‐based management approach.


中文翻译:

通过直接使用长期港口生物采样长度记录和生活史特征,美属维尔京群岛有效地推断出热带,多物种,多齿轮,与珊瑚礁有关的渔业系统的可持续性

  1. 美属维尔京群岛(USVI)的渔业系统提供了审查决策的机会,并为整个热带地区的类似渔业提供了建议;它经过充分研究,管理得当且对经济的影响很小。
  2. 为了评估(多层次建模),评估(历史基线和规模频率分布的比较)并以综合方式解释(回归)渔业状况,将生命历史,生态和渔业特征的指标应用于26年之久和104种大型鱼类端口生物采样数据库。
  3. 该渔业由稳定的,截短的和过度捕捞的仅K选择鱼种组成。特别是在96种鱼类中,有45种(46.9%)在30年的捕捞鱼类平均标准长度上显示出重要但没有生物学意义的趋势。然而,在103个物种中,有93个(90.2%)遭受持续的生长和/或过度捕捞。此外,生物学和经济上的过度捕捞都与这些物种的选择性质成正比,显着且很大程度上相关。
  4. 现有的背景研究证实了这一结果,这些研究综合表明了渔业管理的缓冲作用。它采用了各种监视,法规和增强工具来应对其主要挑战,包括数据收集和质量改进,多种人为和自然压力导致的局部和区域环境恶化以及不合规。然而,人口规模,捕鱼努力和商业登陆的数量不断增加的趋势,单位努力产量的下降趋势,过去40年中产量的相对组成变化,以及崩溃或濒临灭绝。自1970年代以来,濒临灭绝的鱼类物种尚未恢复。
  5. 使用基于生态系统的管理方法,重新设计输入和输出控制的法规并升级环境基准将使USVI渔业系统受益。
更新日期:2019-03-19
down
wechat
bug