量化环境因素对高利用度海洋保护区内弹性枝条分布和丰度的影响
Pascal Sebastian1, Serena Jane Stean1, Ahmad Ilham Rabbani Erawan1
1Indo Ocean Foundation, Desa Toyapakeh, Nusa Penida, Klungkung, Bali, Indonesia.
Marine environmental research
|June 26, 2025
概括
海洋保护区 (MPA) 对弹性树枝的影响有限,其数量仅略有增加. 有效的保护需要更好的执法和鱼和鱼息地管理.
科学领域:
- 海洋生物学 海洋生物学
- 保护科学 保护科学
- 渔业管理 渔业管理 渔业管理
背景情况:
- 鱼和鱼是海洋生态系统健康的关键指标.
- 它们面临着过度捕捞,息地丧失和旅游业的重大威胁.
- 海洋保护区 (MPA) 是保护工具,但它们在多用途区域的有效性尚不清楚.
研究的目的:
- 评估Nusa Penida的海洋保护区内的弹性树枝分布,丰度和息地联系.
- 评估MPAs在保护弹性枝状动物种群中的有效性.
- 识别影响弹性枝状物存在的因素,并为管理策略提供信息.
主要方法:
- 在四个MPA区域进行了诱远程水下视频 (BRUV) 调查.
- 在2018年至2023年期间,发生了212次BRUV部署.
- 记录了拉斯莫枝状物种,数量 (每小时MaxN) 和息地关联.
主要成果:
- 记录了来自13个物种的119个弹性枝状动物,每单位努力 (SPUE) 的观测量为0.48 MaxN/hour.
- 在与珊瑚和无脊椎动物息地相关的北部/西部地区,枝的多样性最高.
- 南部地区是珊瑚礁鱼的主要聚集地;东部地区的遭遇较低,但有危物种的潜力.
结论:
- 拉斯莫枝的存在似乎受到生物和环境因素的影响,可能独立于MPA状态.
- 相对丰度的微小增加强调了需要加强执法和管理的必要性.
- 基于息地的策略和精细的法规对于在MPA内有效保护弹性树枝至关重要.
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