animals biomass

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• Biomass (ecology) — Biomass, in ecology, is the mass of living biological organisms in a given area or ecosystem at a given time. Biomass can refer to species biomass , which is the mass of one or more species, or to community biomass , which is the mass of all… …   Wikipedia

• biomass — /buy oh mas /, n. 1. Ecol. the amount of living matter in a given habitat, expressed either as the weight of organisms per unit area or as the volume of organisms per unit volume of habitat. 2. Energy. organic matter, esp. plant matter, that can… …   Universalium

• biomass — Total weight of a stock or of a component of a stock; e.g. spawning biomass is the combined weight of mature animals …   Fisheries — dictionary

• Overpopulation in wild animals — occurs when a population of a wild species exceeds the carrying capacity of its ecological niche. Overpopulation is a function of the number of individuals compared to the relevant resources, such as the water and essential nutrients they need to …   Wikipedia

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

• 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

• Glossary of environmental science — This is a glossary of environmental science.Environmental science is the study of interactions among physical, chemical, and biological components of the environment. Environmental science provides an integrated, quantitative, and… …   Wikipedia

• tropical rainforest — Introduction also spelled  tropical rain forest        luxuriant forest, generally composed of broad leaved trees and found in wet tropical uplands and lowlands around the Equator.  Rainforests are vegetation types dominated by broad leaved trees …   Universalium

• 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

• Marine habitats — Coral reefs provide marine habitats for tube sponges, which in turn become marine habitats for fishes Littoral zone …   Wikipedia