Background Mediterranean ports are sources of significant economic activity and at the same time they act as recipients of considerable anthropogenic disturbance and pollution. Polluted and low-in-oxygen sediments can negatively impact benthic biodiversity and favour recruitment of opportunistic or invasive species. Macrobenthic communities are an important component of the port biota and can be used as environmental quality indicators. However, a baseline database for benthic biodiversity in Mediterranean ports has not yet been widely established. New information Macrobenthic assemblages were recorded in three Mediterranean touristic ports under the framework of the ENPI CBC MED project MAPMED (MAnagement of Port Areas in the MEDiterranean Sea Basin). Samples were collected from Cagliari (Sardinia, Italy), Heraklion (Crete, Greece) and El Kantaoui (Tunisia) ports during February, May and September 2012. The sampling stations were selected according to the different sectors within each port (i.e. leisure, fishing, passenger/cargo vessels and shipyard). A total of 277 taxa belonging to 12 phyla were found, of which the 96 taxa were present in all three ports. El Kantaoui port hosted the highest number of macrobenthic taxa. Mollusca were the most abundant group (34%) in all ports. The highest percentage of opportunistic taxa per station was found before the touristic period in the shipyard of Heraklion port (89.3%).

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三个地中海旅游港口的底栖群落：MAPMED 项目

背景 地中海港口是重要经济活动的来源，同时它们也是相当大的人为干扰和污染的接受者。污染和低氧沉积物会对底栖生物多样性产生负面影响，并有利于机会性或入侵物种的补充。大型底栖动物群落是港口生物群的重要组成部分，可作为环境质量指标。然而，地中海港口底栖生物多样性的基线数据库尚未广泛建立。新信息 在 ENPI CBC MED 项目 MAPMED（地中海盆地港口区管理）的框架下，三个地中海旅游港口记录了大型底栖动物组合。样品采集自卡利亚里（意大利撒丁岛）、伊拉克利翁（克里特岛、希腊）和 El Kantaoui（突尼斯）港口于 2012 年 2 月、5 月和 9 月期间。采样站是根据每个港口内的不同部门（即休闲、渔业、客/货船和造船厂）选择的。共发现属于 12 个门的 277 个类群，其中 96 个类群存在于所有三个港口。El Kantaoui 港口拥有数量最多的大型底栖动物类群。软体动物是所有港口中数量最多的群体 (34%)。在伊拉克利翁港口的造船厂的旅游期之前，每个站点的机会性分类群比例最高 (89.3%)。共发现属于 12 个门的 277 个类群，其中 96 个类群存在于所有三个港口。El Kantaoui 港口拥有数量最多的大型底栖动物类群。软体动物是所有港口中数量最多的群体 (34%)。在伊拉克利翁港口的造船厂的旅游期之前，每个站点的机会性分类群比例最高 (89.3%)。共发现属于 12 个门的 277 个类群，其中 96 个类群存在于所有三个港口。El Kantaoui 港口拥有数量最多的大型底栖动物类群。软体动物是所有港口中数量最多的群体 (34%)。在伊拉克利翁港口的造船厂的旅游期之前，每个站点的机会性分类群比例最高 (89.3%)。