Limnology Limnology Limnology ( ; from Greek λίμνη, "limne", "lake" and λόγος, "logos", "knowledge"), is the study of inland aquatic ecosystems. The study of limnology includes aspects of the biological, chemical, physical, and geological characteristics and functions of inland waters (running and standing waters, fresh and saline, natural or man-made). This includes the study of lakes, reservoirs, ponds, rivers, springs, streams, wetlands, and groundwater. A more recent sub-discipline of limnology, termed landscape limnology, studies, manages, and seeks to conserve these ecosystems using a landscape perspective, by explicitly examining connections between an aquatic ecosystem and its watershed. Recently, the need to understand
Subject of labor production process (Marx, 1967, p 174), along with "human labor", and the "means of labor" (tools and infrastructure used to transform the subject of labor). The "subject of labor" and the "means of labor" comprise the means of production of society (Institute of Economics, 1957). "Subject of labor" is sometimes called "object of labor" (e.g., Sheptulin, 1978). In both cases, the term refers to what is being worked on. Institute of Economics of the Academy of Sciences of the U.S.S.R. (1957). Political Economy: A Textbook. London: Lawrence and Wishart. Marx, Karl (1867 | 1967). "Capital" Vol. I. New York: International