Global climate change affects productivity and species composition of freshwater and marine aquatic ecosystems by raising temperatures, ocean acidification, excessive solar UV and visible radiation. Effects on bacterioplankton and viruses, phytoplankton and macroalgae have farreaching consequences for primary consumers such as zooplankton, invertebrates and vertebrates, as well as on human consumption of fish, crustaceans and mollusks. It has affected the habitation of the Arctic and Antarctic oceans the most so far. Increasing pollution from terrestrial runoff, industrial, municipal and household wastes as well as marine transportation and plastic debris also affect aquatic ecosystems.

Table of contents :
Introduction. Solar UV Radiation and Penetration into Water. Ocean climate changes. Effects of global climate change on cyanobacteria. Phytoplankton responses to ocean climate change drivers: interaction of ocean warming, ocean acidification and UV exposure. Are Warmer Waters, Brighter Waters?: An Examination of the Irradiance Environment of Lakes and Oceans in a Changing Climate. Effects of global change on aquatic lower trophic levels of coastal South West Atlantic Ocean environments. Effects of Climate Change on Corals. Responses of Calcifying Algae to Ocean Acidification. Effects of a Changing Climate on Freshwater and Marine Zooplankton. UV-B radiation and the green-tide forming macroalgae Ulva. Mid Latitude Macroalgae. Polar Macroalgae. Effects of Climate Change on Aquatic Bryophytes. Ecophysiological Responses of Mollusks to Oceanic Acidification. Climate Change Effects on the Physiology and Ecology of Fish.