A Lexicon of Cave and Karst Terminology with Special Reference to Environmental Karst Hydrology. Courtesy of the author & The Karst Waters Institute. 2002.
Trophic cascade — Trophic cascades occur when predators in a food chain suppress the abundance of their prey, thereby releasing the next lower trophic level from predation (or herbivory if the intermediate trophic level is an herbivore). For example, if the… … Wikipedia
Trophic level — First trophic level The plants in this image, and the algae and phytoplankton in the lake, are primary producers. They take nutrients from the soil or the water, and manufacture their own food by photosynthesis, using energy from the sun. The… … Wikipedia
Trophic dynamics — In ecology, trophic dynamics is the system of trophic levels (Greek trophē , food), which describe the position that an organism occupies in a food chain what it eats, and what eats it. Energy economy Ecologists study the energy economies of… … Wikipedia
Trophic state index — The quantities of nitrogen, phosphorus, and other biologically useful nutrients are the primary determinants of a body of water s trophic state index (TSI). Nutrients such as nitrogen and phosphorus tend to be limiting resources in standing water … Wikipedia
trophic level — ▪ ecology step in a nutritive series, or food chain, of an ecosystem. The organisms of a chain are classified into these levels on the basis of their feeding behaviour. The first and lowest level contains the producers, green plants (plant). The … Universalium
trophic level — /trɒfɪk ˈlɛvəl/ (say trofik levuhl) noun a level in a food chain, represented as one of a succession of steps in the transfer of matter and energy in an ecosystem. The natural flow of energy in an ecosystem is from the sun to the plants (the… …
trophic level — noun : one of the hierarchical strata of a food web characterized by organisms which are the same number of steps removed from the primary producers * * * ˌtrophic ˈlevel 7 [trophic level] noun (technical) each of several levels in an ↑ecosystem … Useful english dictionary
trophic level — troph′ic lev el n. ecl ecl each of the levels of feeding that together form a food chain • Etymology: 1940–45 … From formal English to slang
Integrated Multi-Trophic Aquaculture — (IMTA) is a practice in which the by products (wastes) from one species are recycled to become inputs (fertilizers, food) for another. Fed aquaculture (e.g. fish, shrimp) is combined with inorganic extractive (e.g. seaweed) and organic extractive … Wikipedia
Food web — A freshwater aquatic and terrestrial food web. A food web (or food cycle) depicts feeding connections (what eats what) in an ecological community. Ecologists can broadly lump all life forms into one of two categories called trophic levels: 1) the … Wikipedia
