ecological
81Ecological Society of America — The Ecological Society of America (ESA) is a professional society for ecologists located in the United States. It has about 9,000 members.The society was formed at a meeting at Columbus Ohio, on December 28,1915, with the aims to:* promote… …
82Ecological thinning — Thinning, a silvicultural technique used in forest management, is a stand manipulation operation designed to modify tree growth. Where trees are managed under a commercial regime, competition is reduced by removing adjacent stems that exhibit… …
83Ecological effects of biodiversity — The diversity of species and genes in ecological communities affects the functioning of these communities. These ecological effects of biodiversity in turn affect both climate change through enhanced greenhouse gases, aerosols and loss of land… …
84Ecological island — An ecological island is not necessarily an island surrounded by water, but is an area of land, isolated by natural or artificial means from the surrounding land, where a natural micro habitat exists amidst a larger differing ecosystem. Also, in… …
85Ecological Restoration — ▪ 1999 by Stephanie Mills Ecological restoration (the rapidly developing practice of healing damaged lands and waters) is grounded in the emerging scientific discipline of restoration ecology. The science and the practice are mutually… …
86Ecological pyramid — An interesting face(or Trophic pyramid) is a graphical representation designed to show the biomass or productivity at each trophic level in a given ecosystem. Biomass pyramids show the abundance or biomass of organisms at each trophic level,… …
87Ecological study — An ecological study is an epidemiological study in which the unit of analysis is a population rather than an individual. For instance, an ecological study may look at the association between smoking and lung cancer deaths in different countries.… …
88Ecological crisis — An ecological crisis occurs when the environment of a species or a population changes in a way that destabilizes its continued survival. There are many possible causes of such crises:*It may be that the environment quality degrades compared to… …
89Ecological correlation — In statistics, an ecological correlation is a correlation between two variables that are group means, in contrast to a correlation between two variables that describe individuals. For example, one might study the correlation between physical… …
90Ecological wisdom — The term ecological wisdom, or ecosophy, is a philosophy of ecological harmony or equilibrium. It was introduced by Norwegian philosopher Arne Naess in 1973. The concept is the outgrowth of the environmentalism of the 1960s and has become one of… …
