oceans . These systems have a relatively low buffering capacity and are therefore more sensitive to climate-related shocks and variability . Freshwater faunae are projected to be highly vulnerable; in the tropics because organisms are closer to approaching their thermal physiological limits and in the northern hemisphere  because the rate of temperature change is faster . The worldwide spatial confluence of productive freshwater fisheries and low food security highlights the critical role of rivers and lakes in providing locally sourced, low-cost, nutritious food sources .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report