Department of Biological Sciences, Environmental Research Center, University of Notre Dame, Notre Dame, Indiana, 46556, USA.
Utah Division of Wildlife Resources, Salt Lake City, Utah, 84114, USA.
Ecol Appl. 2019 Apr;29(3):e01864. doi: 10.1002/eap.1864. Epub 2019 Mar 5.
A fishery for brine shrimp (Artemia franciscana) cysts to supply the aquaculture industry considerably expanded in the late 1980s in the Great Salt Lake, Utah, USA. With this expansion, concerns emerged in the 1990s about the fishery's sustainability, especially its impact on the abundant western North American waterbirds that use the lake and feed on brine shrimp. We track the development of management strategies using adaptive management by the Utah Division of Wildlife Resources (UDWR), which focused on the biology of the system and development of biology-based harvesting models. The models and their rationale are presented, their success in forecasting is evaluated, and implications for managing the harvest and conserving waterbirds are examined. We view this as an interesting case study because it transpired over a short time in a relatively simple system. This permitted us to clearly track management from the onset of a harvest market, through realization that the harvest had to be managed in the absence of needed biological knowledge, to the adaptive development of management strategies as biological knowledge was accumulated. The outcome illustrates the success that harvest management can attain with careful monitoring of the resource and terminating the harvest when a necessary escapement stock is attained.
在美国犹他州的大盐湖，卤虫（Artemia franciscana）卵的渔业在 20 世纪 80 年代后期大幅扩张，以供应水产养殖业。随着这种扩张，人们在 20 世纪 90 年代开始关注渔业的可持续性，特别是它对在湖泊中栖息并以卤虫为食的大量北美西部水鸟的影响。我们使用犹他州野生动物资源部（UDWR）的适应性管理来跟踪管理策略的发展，该部门专注于系统的生物学和基于生物学的捕捞模型的开发。本文介绍了这些模型及其基本原理，评估了它们在预测方面的成功，并探讨了它们对管理捕捞和保护水鸟的影响。我们认为这是一个有趣的案例研究，因为它在相对简单的系统中在短时间内发生。这使我们能够清楚地追踪从捕捞市场开始的管理，直到在缺乏所需生物学知识的情况下必须对捕捞进行管理，再到随着生物学知识的积累而适应性地发展管理策略。这一结果表明，只要对资源进行仔细监测，并在达到必要的洄游种群时停止捕捞，收获管理就可以取得成功。
