Michael Allaby's A Dictionary of Ecology (Oxford Paperback Reference) PDF

By Michael Allaby

ISBN-10: 0192800787

ISBN-13: 9780192800787

From acid rain, CFC's, and the greenhouse influence to the food-chain and the gene financial institution, Oxford's completely revised Dictionary of Ecology, moment variation offers 5,000 up to date entries on all elements of ecology and the environmental sciences. providing direct entry to the main exact and updated details on hand, the dictionary covers an enormous diversity of topics, from plant and animal body structure, animal habit, evolution, environmental toxins, and conservation to climatology, meteorology, geomorphology, and oceanography. The Dictionary of Ecology, moment version, has been absolutely up-to-date to include advancements during this swiftly evolving box, really within the parts of molecular ecology, conservation, and the administration of habitats. additionally integrated are biographical notes on eminent ecologists and different scientists, in addition to valuable cross-references that make this quantity a useful reference device for college students, pros, and someone with an curiosity within the flora and fauna and our surroundings.

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Dust storm A storm in which dust is blown up from the ground. It occurs when the wind speed exceeds a critical value (commonly 24-48 km/h) that depends on quantity of dust present and the size, shape, dampness, and specific gravity of the dust particles. Dust may be carried to a height of 1500-1800 m or more. The *haboob and *khamsin are types of dust storm. dust whirl See DUST DEVIL. Dutch elm disease A devastating disease which can affect all species of elm (Ulmus). The causal agent is Ceratocystis ulmi, a fungus which appears to have originated in Asia, not Holland.

The removal of competing weed species when growing cereal crops). dominance The possession of high social status within an animal group that exhibits social organization; it is often achieved and sustained by *aggression toward inferior individuals. See PECKING ORDER. dominant In ecology, the species having the most influence on *community composition and form. Sometimes the term is also used to refer to the largest and/or most abundant species in the community. Domin scale A system devised by K.

Range) within which a taxon or other group of organisms occurs. 2. The arrangement of organisms within an area. g. a *depression or *trough). g. the equatorial easterlies, the prevailing westerlies over middle latitudes, and the *trade winds). diurnal 1. During daytime (as opposed to nocturnal), as applied to events that occur only during daylight hours or to species that are active only in daylight. 2. At daily intervals, as applied to such daily rhythms as the normal pattern of waking and sleeping, leaf or flower opening and closing, or the characteristic rise and fall of temperature associated with the hours of light and darkness.

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

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