过度捕捞和海洋变暖导致了Paracentrotus lividus的崩
Andrea Toso1,2,3, Francesca Necci4,5,6, Alessandra Martines4,5,6
1Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, Lecce, Italy. andrea.toso@unisalento.it.
Scientific reports
|May 28, 2025
概括
地中海的紫色海 (Paracentrotus lividus) 种群已经达到极低的密度. 监测显示了前所未有的低点,保护区和未受保护区之间没有区别,这表明了广泛的生态危机.
科学领域:
- 海洋生物学 海洋生物学
- 生态生态学 生态生态学
- 渔业 科学 渔业 科学
背景情况:
- 紫色海刺 (Paracentrotus lividus) 是地中海的一个高度利用的鱼.
- 近几十年来,该物种的总捕获量显著增加.
研究的目的:
- 评估Paracentrotus lividus种群的当前人口趋势.
- 为了分析地中海各地Paracentrotus lividus的长期密度变化.
- 调查影响Paracentrotus lividus下降的因素.
主要方法:
- 在2023年夏天,西西里和阿普利亚进行了两次人口监测活动.
- 对从1990年到2020年发表的44篇文章进行了元分析和元回归.
- 人口密度在受保护和未受保护的海洋区域之间进行了比较.
主要成果:
- 在采样区域的平均Paracentrotus lividus密度创下了创纪录的低点,为0.2个/m2.
- 保护区和非保护区之间没有发现密度的显著差异.
- 超回归表明,从2003年开始的人口下降,与泛欧洲热浪和地中海变暖有关.
结论:
- 在地中海地区,Paracentrotus lividus种群正在经历前所未有的稀有性.
- 保护状况似乎不受海洋保护区的影响,这表明更广泛的环境驱动因素.
- 异常变暖事件与人口减少的开始相关,突出显示了气候变化的影响.
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