Under professor Meryem Beklioğlu's leadership, Limnology Laboratory explores the ecological structure and functions of lake ecosystems and how they are affected by global changes through international (EU-Framework and Horizon 2020) and national projects. The impact of hydrological changes, global warming and land use are investigated in shallow lakes from freshwater to saline using experimental and other ecological research approaches. Laboratory and, on-land and in-situ mesocosm experiments are currently used to develop mechanistic understanding of ecosystem processes (See METU-Mesocosms System I and II). We try to understand impact of global change on ecosystem structure through using the long-term ecological monitoring with high temporal resolution, and by combining "space for time substitute" approach, with increased spatial resolution. In all these different research approaches, we focus on all trophic interaction and vertical community structures including microbial loop (bacteria, hetotrophic phylagelate, ciliate), phytoplankton, zooplankton, aquatic plants and fish biomass and diversity