By Michael Allaby
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 updated entries on all elements of ecology and the environmental sciences. delivering direct entry to the main actual and up to date info on hand, the dictionary covers an unlimited diversity 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 totally up to date to include advancements during this quickly evolving box, really within the parts of molecular ecology, conservation, and the administration of habitats. additionally incorporated are biographical notes on eminent ecologists and different scientists, in addition to worthwhile cross-references that make this quantity a useful reference software for college kids, execs, and an individual with an curiosity within the flora and fauna and our surroundings.
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Extra info for A Dictionary of Ecology (Oxford Paperback Reference)
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. More generally, any region where deflation of cultivable land occurs. dust devil (dust whirl, sand paillar) A very localized *whirlwind in a desert area, where strong convection uplifts dust and sand often to a height of a few tens of metres.
Compare FLOOD TIDE. 4 Ma ago, that is associated with a period of glaciation at about the beginning of the *Pleistocene. It may correspond to the *Donau stage in the Alpine area and the Nebraskan stage in North America. eccritic temperature The body temperature an *ectotherm prefers, often maintaining it by alternately basking and seeking shade. ecdysis The periodic shedding of the exoskeleton by some invertebrates, or of the outer skin by some amphibians (see *AMPHIBLA) and *reptiles. Â < previous page < previous page page_134 page_135 next page > next page > Page 135 ecesis (biological invasion) The ability of some migrating plant species, having arrived at a new site, to germinate, grow, and reproduce successfully, while others fall to become established in the new environment.
Drainage network See DRAINAGE PATTERN. drainage network analysis The study of the way in which the pattern of streams in a drainage basin is organized. g. on the link between the importance (or 'order') of a stream segment and its frequency). Certain 'laws' of drainage network composition were derived. The modern approach emphasizes the importance of random processes in an explanation of these 'laws' and is more concerned with the density of the drainage network (drainage density = total length of channels/drainage area).
A Dictionary of Ecology (Oxford Paperback Reference) by Michael Allaby