Forest Water Ecosystems

Input-output budgets at Langtjern, a small acidified lake in southern Norway.- Dissolved inorganic substances: A study of mass balance in three small drainage basins.- Dilution and acidification effects during the spring flood of four Swedish mountain brooks.- Trace metals in Swedish natural fresh waters.- Selenium as a growth factor for plankton algae in laboratory experiments and in some Swedish lakes.- Origin and production of phosphatases in the acid Lake Gardsjon.- Bacterioplankton in the acidified Lake Gårdsjön.- Respiration of plankton in two small polyhumic lakes.- Seasonal development of bacterioplankton in two forest lakes in central Sweden.- Relations between production and biomass of phytoplankton in four Swedish lakes of different trophic status and humic content.- Primary production and phytoplankton in two small, polyhumic forest lakes in southern Finland.- Zooplanktic indicators of trophy and their food.- Growth and feeding of Fredericella sultana (bryozoa) in the outlet of a humic acid lake.- The food preference of vendace (Coregonus albula) in South Swedish forest lakes including the predation effect on zooplankton populations.- Food and food selection of cisco (Coregonus albula L.) in a dysoligotrophic lake.- Differences in growth of perch (Perca fluviatilis L.) in two small forest lakes.- Ecological effects of lime treatment of acidified lakes and rivers in Sweden.