DTU Aqua, National Institute of Aquatic Resources, Technical University of Denmark, Kemitorvet, 2800 Kgs. Lyngby, Denmark; Centre for Ecology and Conservation, University of Exeter, Penryn Campus, Cornwall TR10 9FE, UK.
DTU Aqua, National Institute of Aquatic Resources, Technical University of Denmark, Kemitorvet, 2800 Kgs. Lyngby, Denmark.
Mar Pollut Bull. 2024 Dec;209(Pt A):117169. doi: 10.1016/j.marpolbul.2024.117169. Epub 2024 Oct 24.
Coastal regions are under intense and growing pressure from human activities. Here, we examine how human and natural drivers interact with benthic communities, species, and life-history traits across four distinct coastal areas. Sediment organic content was a key driver of seabed community characteristics, with positive (increased benthic biomass) and strongly adverse (depauperate communities) effects observed. Similarly, environmental factors such as bottom currents were highly influential. In contrast, bottom trawling impacts varied by location. Beam trawling in areas of low organic enrichment was most damaging to seabed fauna, even in the presence of strong bottom currents. However, we did not observe any faunal impacts of trawling under chronic enrichment, despite the fishery using relatively heavy gears (e.g. otter trawls) at high intensities. Lastly, we discuss how human and natural factors interact and shape seabed ecosystems under different conditions, and how management measures can be adapted to improve coastal seabed health.
沿海地区正承受着来自人类活动的强烈且日益增长的压力。在这里，我们研究了人类和自然驱动因素如何在四个不同的沿海地区与底栖群落、物种和生活史特征相互作用。沉积物有机含量是海底群落特征的关键驱动因素，观察到了积极的（增加底栖生物量）和强烈不利的（贫化群落）影响。同样，底流等环境因素也具有高度影响力。相比之下，底层拖网的影响因地点而异。在有机物贫化区域，桁拖网对海底动物群的破坏最大，即使存在强烈的底流也是如此。然而，尽管渔业使用相对较重的渔具（如桁拖网）进行高强度作业，但在长期富化的情况下，我们没有观察到任何底栖生物受拖网捕捞的影响。最后，我们讨论了人类和自然因素在不同条件下如何相互作用并塑造海底生态系统，以及如何调整管理措施以改善沿海海底健康。
