A Dictionary of Ecology (Oxford Paperback Reference) - download pdf or read online

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By Michael Allaby

ISBN-10: 0192800787

ISBN-13: 9780192800787

From acid rain, CFC's, and the greenhouse impression to the food-chain and the gene financial institution, Oxford's completely revised Dictionary of Ecology, moment version presents 5,000 up to date entries on all elements of ecology and the environmental sciences. delivering direct entry to the main actual and updated details to be had, the dictionary covers an unlimited variety of matters, from plant and animal body structure, animal habit, evolution, environmental pollutants, and conservation to climatology, meteorology, geomorphology, and oceanography. The Dictionary of Ecology, moment variation, has been absolutely up to date to include advancements during this speedily evolving box, really within the components of molecular ecology, conservation, and the administration of habitats. additionally integrated are biographical notes on eminent ecologists and different scientists, in addition to beneficial cross-references that make this quantity a useful reference instrument for college students, execs, and someone with an curiosity within the wildlife and our surroundings.

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He contributed to several branches of biogeography and was a leading figure in the *Uppsala school of phytosociology. duripan A mineral *diagnostic *soil horizon which is cemented by silica and so will not slake or fall apart in water or hydrochloric acid. g. carbonates and iron oxide). Where duripans are exposed on the soil surface, they are called *duricrust. Compare CALICHE. dust-bowl An area of the Great Plains region, USA, where a combination of drought and inappropriate farming practices, especially an expansion of wheat production, led to severe *deflation and soil erosion during the middle 1930s.

James Alexander Logie (1878-1948)A South African geologist who made field studies of the provinces of *Gondwana and found extensive evidence for *continental drift. He published his ideas in Our Wandering Continents: An Hypothesis of Continental Drift (1937). dysgenic Genetically deleterious. dysphotic zone The region of the *photic zone that lies below the *compensation level, and within which light penetration is such that oxygen production by photosynthesis is exceeded by oxygen consumption by respiration.

The continental Old Red Sandstone deposits contain a fauna of jawless fish and plants belonging to the primitive psilophyte group. As a result of the Caledonian orogeny of late *Silurian times, much of the British Isles was covered with continental red-bed facies. Fossils of vascular plants are abundant in Devonian beds; the Rhynie chert flora (Middle Devonian) consists of well-preserved psilophytes. dewatering The removal of *groundwater to reduce flow-rate or diminish pressure. Methods used depend on the *permeability of the ground, the proximity of hydrogeologic boundaries (see HYDRAULIC BOUNDARY), the 30 31 *storage coefficient of the soil, pressure, and *hydraulic gradient.

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A Dictionary of Ecology (Oxford Paperback Reference) by Michael Allaby

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