通过多平台海洋遥感技术在地中海保护区(南爱琴海吉亚罗斯岛)进行海洋优先生境制图

本研究旨在展示通过海洋遥感技术在基亚罗斯岛进行首次全面海洋生境制图的结果。基亚罗斯岛是基克拉泽斯群岛中一个偏远岛屿，具有重要的历史和生态价值。该岛具有重要的生物学意义，因此自2011年起成为NATURA 2000网络的一部分，并在2019年被列为海洋保护区（MPA）。研究人员于2014年和2017年进行了两次独立探险，通过多平台海洋遥感技术调查了超过80平方公里的海底区域。此次遥感调查使用了侧扫声呐、次海底剖面仪以及多波束和单波束回声测深仪。除了遥感调查外，还利用水下拖曳摄像机和范·维恩沉积物采样器建立了广泛的地面实况网络，从而实现了该区域的高质量数据全覆盖。基于这些数据，研究人员根据三种不同的海底生境制图方案（专家方案、欧洲自然信息系统和NATURA HD）对该区域进行了分类。调查和分类结果显示，超过50%的海底区域被波西多尼亚海草草原、珊瑚礁和其他钙质生物结壳优先生境所覆盖。基于这项工作的结果，基亚罗斯海洋保护区得以建立，并设立了不同的保护和保育区域。

This study aims to present the results of the first comprehensive marine habitat mapping conducted around Gyaros Island using marine remote sensing technologies. Gyaros Island, a remote isle in the Cyclades Archipelago, holds significant historical and ecological value. Possessing vital biological significance, the island has been part of the Natura 2000 network since 2011 and was designated as a Marine Protected Area (MPA) in 2019. Researchers carried out two independent expeditions in 2014 and 2017, surveying over 80 square kilometers of seabed area via multi-platform marine remote sensing technologies. The remote sensing survey employed side-scan sonar, sub-bottom profiler, as well as multibeam and single-beam echosounders. In addition to the remote sensing survey, a comprehensive ground truth network was established using underwater towed cameras and Van Veen sediment samplers, enabling full coverage of high-quality data for the region. Based on these data, researchers classified the area using three distinct marine habitat mapping frameworks: the expert protocol, the European Nature Information System, and Natura HD. The survey and classification results reveal that over 50% of the seabed is covered by priority habitats dominated by Posidonia oceanica meadows, coral reefs, and other calcareous biogenic crusts. Based on the outcomes of this work, the Gyaros Marine Protected Area was established, with various conservation and protection zones designated.