The recreational use of water bodies presents new challenges and pressures on lake ecosystems. We focused on how recreational beaches influence the shoreline biodiversity of Lake Balaton, Hungary. Taking into account the establishment of beaches, we examined natural reed vegetated shorelines (representing natural situation), open areas (representing areas, where reed has been removed), as well as beaches. We assessed the abiotic parameters as well as the chironomid assemblages of these habitats. We found that the transformation of reeds through open habitats to beaches is associated with multiple changes in environmental properties and with a decrease in habitat heterogeneity. We observed that the transformation of reeds to beaches caused an 18% reduction in chironomid taxa richness and a moderate drop in their abundance. This reduction can be explained by the removal of reeds, because this action transforms a productive system to an unproductive one, and by the assumed dependence of chironomid richness and abundance to the organic-matter content of the sediment. Our analyses showed that the composition of chironomids was sensitive to the transformation of the habitats, and to the natural differences in the northern and southern shorelines of the lake. These findings suggest that the establishment and use of recreational beaches had a negative effect on local biodiversity. Although beaches can promote diversified societal and economic benefits, our results show that they can also generate conservation issues related to biodiversity loss. Consequently, action plans focusing on the maintenance and the establishment of recreational beaches should carefully consider both economic and conservation aspects.

水体的娱乐利用给湖泊生态系统带来了新的挑战和压力。我们专注于休闲海滩如何影响匈牙利巴拉顿湖的海岸线生物多样性。考虑到海滩的建立，我们检查了天然芦苇草木海岸线（代表自然状况），开放区域（代表区域，芦苇已被去除）以及海滩。我们评估了这些生境的非生物参数以及嵌合体组合。我们发现，芦苇通过开放的栖息地向海滩的转化与环境特性的多种变化以及栖息地异质性的降低有关。我们观察到，芦苇向海滩的转化导致尺ron类群丰富度降低了18％，并且其丰度适度下降。这种减少可以通过去除芦苇来解释，因为这种作用将一种生产系统转变为一种非生产系统，并假定了手性丰富度和丰富度对沉积物有机物含量的依赖性。我们的分析表明，鸟足类动物的组成对生境的转变以及该湖北部和南部海岸线的自然差异敏感。这些发现表明，休闲海滩的建立和使用对当地生物多样性有负面影响。尽管海滩可以促进多样化的社会和经济效益，但我们的研究结果表明，海滩还可以引发与生物多样性丧失相关的保护问题。所以，