trophic ecology

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• 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 — ▪ 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

• Ecology — For other uses, see Ecology (disambiguation). Ecology …   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 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

• ecology — ecological /ek euh loj i keuhl, ee keuh /, ecologic, adj. ecologically, adv. ecologist, n. /i kol euh jee/, n. 1. the branch of biology dealing with the relations and interactions between organisms and their environment, including other organisms …   Universalium

• 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

• Ecology of the San Francisco Estuary low salinity zone — The low salinity zone (LSZ) of the San Francisco Estuary and Delta represents a highlyaltered ecosystem. The region has been heavily re engineered to accommodate the needs ofwater delivery, shipping, agriculture, and most recently, suburban… …   Wikipedia

• Ecology Functional Groups — In ecology, functional groups are collections of organisms based on morphological, physiological, behavioral, biochemical, or environmental responses or on trophic criteria. In ocean biogeochemical modelling, the following four criteria have been …   Wikipedia

• trophic — [ trəʊfɪk, trɒfɪk] adjective 1》 Ecology relating to feeding and nutrition. 2》 (also tropic) Physiology (of a hormone or its effect) stimulating the activity of another endocrine gland. Origin C19: from Gk trophikos, from trophē nourishment , from …   English new terms dictionary

• Ecosystem ecology — Figure 1. A riparian forest in the White Mountains, New Hampshire (USA). Ecosystem ecology is the integrated study of biotic and abiotic components of ecosystems and their interactions within an ecosystem framework. This science examines how… …   Wikipedia