idiophone
The Concise Oxford Dictionary of Music
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1996
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© The Concise Oxford Dictionary of Music 1996, originally published by Oxford University Press 1996. (Hide copyright information)
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idiophone. Term for mus. instr. which produce sound from their own substance, e.g. castanets, cymbals, bells, etc. Can be struck, plucked, blown, or vibrated by friction. One of 4 classifications of instr. devised by C. Sachs and E. M. von Hornbostel and pubd. in
Zeitschrift für Ethnologie, 1914. Other categories are
aerophones,
chordophones, and
membranophones, with
electrophones added later.
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Lake Erie Rehabilitated: Controlling Cultural Eutrophication, 1960s - 1990s.(Review)
Magazine article from: The Ohio Journal of Science; 4/1/2001; ; 700+ words
; ...Rehabilitated: Controlling Cultural Eutrophication, 1960s - 1990s. William McGucken...four decades to control cultural eutrophication in Lake Erie and the lower Great Lakes. Cultural eutrophication, as defined in the introduction...
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Eutrophication: an ecological vision.
Magazine article from: The Botanical Review; 12/1/2005; ; 700+ words
; Introduction Definition Eutrophication Studies on Lakes Water Resources...Its Role Role of Phosphorus in Eutrophication Sources of Phosphorus Monitoring...pH) Light Dissolved Oxygen Eutrophication versus Plant Diversity Eutrophication...
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NUTRIENT SCALING FOR ASSESSING EUTROPHICATION: THE DEVELOPMENT OF A SIMULATED NORMAL DISTRIBUTION.(Brief Article)
Magazine article from: Ecological Applications; 2/1/2000; ; 700+ words
; ...procedures is proposed for assessing eutrophication. A simulated normal distribution...distribution can be used to define eutrophication scales, assign critical values...words: Aegean Sea; coastal areas: eutrophication assessment; Greece; nitrate concentration...
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Sources of the eutrophication problems associated with toxic algae: An overview. (International Perspectives).
Magazine article from: Journal of Environmental Health; 12/1/2001; ; 700+ words
; Introduction Eutrophication is the biological response of...the 1960s (although the term "eutrophication" is older), when nutrient enrichment...water increasingly fertile. This eutrophication was mainly caused by the addition...
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The Lake Michigan Eutrophication Model, LM3-Eutro: Model Development and Calibration
Magazine article from: Water Environment Research; 9/1/2008; ; 700+ words
; ABSTRACT: A eutrophication model developed to generate primary...model, known as the Lake Michigan Eutrophication model (LM3-Eutro), has a...averages that are used in most eutrophication models, especially during sunny...
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Impact of eutrophication on wood frog, Rana sylvatica, tadpoles infected with Echinostoma trivolvis cercariae.(Report)
Magazine article from: Canadian Journal of Zoology; 9/1/2006; ; 700+ words
; ...environmental changes, such as eutrophication, are occurring that could impact...ii) post-infection impacts of eutrophication on R. sylvatica tadpoles infected...experiment, investigating the impact of eutrophication on infected tadpoles, showed that...
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Eutrophication of seas may have impact on genetic variation in algae.
News Wire article from: Asian News International; 10/22/2009; 700+ words
; ...Gothenburg in Sweden has shown that eutrophication of the seas may have an impact on genetic variation in algae. Eutrophication is an increase in the concentration...Depending on the degree of eutrophication, subsequent negative environmental...
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MANAGEMENT OF EUTROPHICATION FOR LAKES SUBJECT TO POTENTIALLY IRREVERSIBLE CHANGE.(Brief Article)
Magazine article from: Ecological Applications; 8/1/1999; ; 700+ words
; ...We focused on the problem of lake eutrophication by excessive phosphorus (P) input...ecosystems, alternate states; eutrophication; irreversible change; lake management...address the particular case of lake eutrophication (Fig. 1). Two ecosystem states...
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An alginate-based fertilizer to reduce eutrophication of aquatic environments.
Magazine article from: Transactions of the Kansas Academy of Science; 9/22/2004; ; 700+ words
; ...nitrogen based fertilizers causes eutrophication of aquatic environments, which ultimately...an additional benefit. Keywords: eutrophication, hypoxia, leaching, sodium, alginate...cannot move out of the hypoxic zones. Eutrophication, an increase in the amount of nutrients...
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Calcium Carbonate Phosphate Binding Ion Exchange Filtration and Accelerated Denitrification Improve Public Health Standards and Combat Eutrophication in Aquatic Ecosystems
Magazine article from: Water Environment Research; 11/1/2005; ; 700+ words
; ABSTRACT: Cultural eutrophication, the process by which a lake...of excess phosphate-induced eutrophication. Especially in Madrona Marsh...area, California, cultural eutrophication has become a major problem...
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Eutrophication
Encyclopedia entry from: UXL Encyclopedia of Science
Eutrophication Eutrophication (pronounced you-tro-fi-KAY-shun) is a natural process...its concentration of plant nutrients. Cultural or artificial eutrophication occurs when human activity introduces increased amounts of these...
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eutrophication
Book article from: A Dictionary of Plant Sciences
eutrophication The process of nutrient enrichment in aquatic ecosystems. It occurs...drainage: such activities are sometimes termed ‘cultural eutrophication’. The rapid increase in nutrient levels stimulates algal...
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cultural eutrophication
Book article from: A Dictionary of Plant Sciences
cultural eutrophication See EUTROPHICATION .
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Water Pollution: Marine
Book article from: Pollution A to Z
...macroscopic plants, in a process called eutrophication . When these plants accumulate, die...runoff is the most important source of eutrophication, but atmospheric deposition is the...agencies consider that, worldwide, eutrophication is the most serious pollution problem...
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Lake Management Issues
Book article from: Water:Science and Issues
...Human wastes are the primary contributor to eutrophication, the most pervasive of water quality problems...overuse and exotic (or invasive) species. Eutrophication Eutrophication is best defined as the excessive addition of...
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