An inventory of anthropogenic barriers to longitudinal river connectivity in Greece is presented based on an extensive literature review. We mapped Greece's 275 major dams and developed an ongoing inventory of 661 other barriers compiled from various sources; we further summarized future dam barriers as published in Greece's river basin area management plans. Environmental professionals and engineers were also interviewed to investigate perceptions and preferences concerning longitudinal river connectivity. Fish were given priority as reference organisms in questionnaire responses, the reviewed literature and relevant legislation, but other biodiversity elements were rarely addressed. Dams prevail as the most prominent perceived barrier pressures while most respondents seem to recognize problems with other barrier types as well. However, mention of small barrier infrastructure in the literature or legislation is very scarce and there is no systematic inventory of in-stream infrastructure barriers, fish passes or other barrier mitigation or restoration interventions. Recommendations for particular unmet needs and opportunities for restoration of a variety of barrier types are addressed. It is crucial that attention for preservation and restoration measures involving lotic waters connectivity issues be introduced in the country's EU-inspired water body management and within protected areas in particular.

基于广泛的文献回顾，提出了希腊纵向河流连通性的人为障碍清单。我们绘制了希腊 275 座主要水坝的地图，并编制了一份来自各种来源的 661 座其他障碍物的持续清单；我们进一步总结了希腊流域区域管理计划中公布的未来大坝障碍。还采访了环境专业人士和工程师，以调查对纵向河流连通性的看法和偏好。在问卷答复、审查的文献和相关立法中，鱼类被优先作为参考生物，但很少涉及其他生物多样性要素。大坝是最突出的障碍压力，而大多数受访者似乎也认识到其他障碍类型的问题。然而，文献或立法中很少提及小型屏障基础设施，并且没有系统地盘点河流基础设施屏障、鱼道或其他屏障缓解或恢复干预措施。针对特殊未满足的需求和恢复各种屏障类型的机会提出了建议。至关重要的是，在该国受欧盟启发的水体管理中，特别是在保护区内，需要关注涉及大量水域连通性问题的保护和恢复措施。针对特殊未满足的需求和恢复各种屏障类型的机会提出了建议。至关重要的是，在该国受欧盟启发的水体管理中，特别是在保护区内，必须注意涉及到大量水域连通性问题的保护和恢复措施。针对特殊未满足的需求和恢复各种屏障类型的机会提出了建议。至关重要的是，在该国受欧盟启发的水体管理中，特别是在保护区内，必须注意涉及到大量水域连通性问题的保护和恢复措施。