Consequences of catchment processes and climatic changes on the ecological status of large shallow temperate lakesNõges, Tiina; Loigu, Enn; Järvet, Arvo; Laugaste, Reet; Tõnno, Ilmar; Nõges, PeeterSymposium on Conservation, Restauration and Management of Aquatic Ecosystems2002 / p. 159-171