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,
Society for the Study of the Indigenous Languages of the Americas SSILA issues two online publications: the quarterly "SSILA Newsletter" and the occasional "SSILA Bulletin". Society for the Study of the Indigenous Languages of the Americas The Society for the Study of the Indigenous Languages of the Americas (SSILA) is an international organization founded in 1981 devoted to the study of the indigenous languages of North, Central, and South America. SSILA has an annual winter meeting held in association with the Linguistic Society of America's annual conference. Summer meetings are held in alternate years at venues near the LSA's Summer Institute. Presentations at SSILA meetings may be made in English, Spanish,