Lake Tisza landscape (IMAGE) Hun-Ren Ökológiai Kutatóközpont Caption Lake Tisza (Kisköre Reservoir) is the second largest standing water in Hungary and in the Carpathian Basin. As part of both national protection and the UNESCO World Heritage Convention, the conservation of bird habitats and nesting sites is a priority here. For this reason, this lake is plagued by water quality problems from time to time, due to the eutrophication in the highly protected basin characterized by the highest occurrence of birds. In addition to its high nature conservation value, Lake Tisza also provides other ecosystem services as it is an important recreational centre for anglers, swimmers, canoers, kayakers, etc. Diverse aquatic macrophyte vegetation develops every summer on Lake Tisza, which can achieve such a high density and biomass that hinder many water usage and recreation activities, that's why annual vegetation thinning is a common practice. From bird’s eye view, the extensive emergent and floating patches of vegetation on Lake Tisza can be clearly distinguished. The vegetation thinning are clearly visible, increasing the patchiness of vegetation. Credit Photo: Balázs Lukács Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.