Abstract Nowadays, recreational fisheries (REC) have a great impact on marine ecosystems and create conflicts with other human coastal activities such as commercial small-scale fisheries (SSF). In the proposed “Taza” marine protected area (MPA) (Algeria, SW Mediterranean), recreational boat fishing is poorly regulated and its catches remain unmonitored. In addition, a significant number of REC fishers sell their catch illegally, an activity we could refer to as IUU (Illegal, Unreported, and Unregulated) fishing. This study is a good opportunity to evaluate the potential conflicts between recreational IUU and commercial fisheries and can be extremely valuable in terms of MPA planning and fisheries monitoring by providing baseline data for setting up sound fisheries management and conservation plans. Two fishing harbors are located near the proposed “Taza” MPA: Boudis and Ziama. Illegal REC boats from Ziama harbor were studied via a direct observation method of landings developed by the Ifremer (French Research Institute for Exploitation of the Sea). A comparison between illegal REC and SSF boats was highlighted in terms of catches and fishing effort. A total of 54 taxa belonging to 24 families were observed in the catches of the 32 recreational active boats in this harbor between May 2013 and April 2014. The proportion of the harvest attributed to illegal REC represented about 50% of the SSF harvest. Illegal REC in the proposed “Taza” MPA is an important socioeconomic activity which is intensively practiced throughout the year. From November to April, the mean catch was almost the same for both fishing categories. Strong competition between recreational and professional fishers for the natural resources was highlighted as 81% of the 54 caught taxa were present in the catches of both fishing categories (i.e. 44 taxa). Moreover, 4 species of high commercial value were caught exclusively by recreational fishers. Finally, the managers of the proposed “Taza” MPA must address and regulate all fishing activities and use the best available information in order to provide important benefits to marine ecosystems, fishers, and the local population.

中文翻译：

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海洋保护区规划和渔业监测的基线数据：拟议的“塔扎”海洋保护区中休闲 IUU 和商业渔业之间的潜在冲突（阿尔及利亚，西南地中海）

摘要 如今，休闲渔业（REC）对海洋生态系统产生重大影响，并与商业小规模渔业（SSF）等其他人类沿海活动产生冲突。在拟议的“塔扎”海洋保护区 (MPA)（阿尔及利亚，地中海西南部）中，休闲船钓管理不善，其捕获量仍未得到监测。此外，大量 REC 渔民非法出售他们的渔获物，我们可以将这种活动称为 IUU（非法、未报告和无管制）捕鱼。这项研究是评估休闲 IUU 和商业渔业之间潜在冲突的好机会，并且通过为建立健全的渔业管理和保护计划提供基线数据，在 MPA 规划和渔业监测方面非常有价值。两个渔港位于拟建的“塔扎”海洋保护区附近：布迪斯和齐亚马。通过 Ifremer（法国海洋开发研究所）开发的直接观察登陆方法，研究了来自齐马港的非法 REC 船。非法 REC 和 SSF 船只在捕获量和捕捞努力方面进行了比较。2013 年 5 月至 2014 年 4 月期间，在该港口的 32 条休闲活动船只的捕获物中，共观察到属于 24 个家庭的 54 个分类群。归因于非法 REC 的收获比例约占 SSF 收获的 50%。拟议的“塔扎”海洋保护区中的非法 REC 是一项重要的社会经济活动，全年都在密集开展。从 11 月到 4 月，两种捕鱼类别的平均渔获量几乎相同。休闲渔民和专业渔民之间对自然资源的激烈竞争得到了强调，因为 54 个捕获的分类群中有 81% 存在于两个捕鱼类别的渔获物中（即 44 个分类群）。此外，有 4 种具有高商业价值的物种仅由休闲渔民捕获。最后，拟议的“塔扎”海洋保护区的管理者必须处理和规范所有捕捞活动，并使用最佳可用信息，以便为海洋生态系统、渔民和当地人口提供重要利益。