Read e-book online 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 impression to the food-chain and the gene financial institution, Oxford's completely revised Dictionary of Ecology, moment variation offers 5,000 updated entries on all elements of ecology and the environmental sciences. supplying direct entry to the main actual and updated info to be had, the dictionary covers an enormous variety of matters, 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 speedily evolving box, relatively 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 priceless cross-references that make this quantity a useful reference software for college kids, pros, and someone with an curiosity within the wildlife and the environment.

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Good's (1974. The Geography of the Flowering Plants) African subkingdom, which lies within his *Palaeotropical floral kingdom. The flora includes about 150 endemic (see ENDEMISM) genera, nearly all of which are small. They include Saintpaulia, one species of which, S. ionantha (African violet), is now a popular house plant. See also FLORAL PROVINCE and FLORISTIC REGION. 48 49 East Australian Current An oceanic water current that flows along the east coast of Australia. This narrow (100-200 km wide) current forms the westerly part of the anticyclonic circulation in the South Pacific.

The name 'dioxin' usually refers to one member of the group, 2,3,7,8-tetrachlorodibenzo-pdioxin (C12H4Cl4O2), severe exposure to which can cause chloracne in humans. dip The angle by which a plane feature inclines from the horizontal. diphyodont Applied to vertebrates in which a set of deciduous teeth (milk teeth) is shed and replaced by a second set of (permanent) teeth. diploid Applied to a cell with two *chromosome sets, or an individual with two chromosome sets in each cell (excluding the *sex chromosomes, which may Or may not be represented twice, according to the sex of the individual).

Transverse dunes are initial forms on sandy coastlines in temperate regions. They migrate inland and may be eroded locally by the wind to form a damp hollow or *'dune slack'. The enclosing crescentic dune is a 'parabolic' dune whose form reverses that of the barchan. See also AKLÃ DUNE; DUNE BED-FORM; and STAR DUNE. dune bedform ('megaripples') Mounds or ridges of sand which are asymmetrical and are produced subaqueously by flowing water. The external morphology is similar to the smaller 'ripple' and larger *'sand 46 47 wave', with a gently sloping, upstream side (stoss), and a steeper downstream side (lee).

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

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