Limnology zoologist) and Einar Naumann (a Swedish botanist) co-founded the International Society of Limnology (SIL, from Societas Internationalis Limnologiae). Forel's original definition of limnology, "the oceanography of lakes", was expanded to encompass the study of all inland waters, and influenced Benedykt Dybowski's work on Lake Baikal. Prominent early American limnologists included G. Evelyn Hutchinson, Ed Deevey, E. A. Birge, and C. Juday. Physical properties of aquatic ecosystems are determined by a combination of heat, currents, waves and other seasonal distributions of environmental conditions. The morphometry of a body of water depends on the type of feature (such as a lake, river,
Association for the Sciences of Limnology and Oceanography resources and research, and promotes scientific stewardship of aquatic resources for the public interest. Its products and activities are directed toward these ends. ASLO publishes four scientific journals: "Limnology and Oceanography"; "Limnology and Oceanography: Fluids and Environments"; "Limnology and Oceanography: Methods";and "Limnology and Oceanography: Bulletin". Much of the content of ASLO journals is open access. In addition to occasional small workshops (LINK) ASLO hosts regularly scheduled major scientific meetings around the world including the Aquatic Science Meetings; the Ocean Science Meetings and the Summer ASLO Meetings. ASLO presents five annual awards in recognition of professional excellence in the field. Active