Fire and grazing in a shrub-invaded arid grassland community: independent or interactive ecological effects?

1999 ◽  
Vol 42 (1) ◽  
pp. 15-28 ◽  
Author(s):  
Thomas J Valone ◽  
Douglas A Kelt
Keyword(s):  
Ecological Effects ◽  
Grassland Community

Some ecological effects of entering a field of study.

1969 ◽  
Vol 60 (4, Pt.1) ◽  
pp. 284-293 ◽  
Author(s):  
Donald L. Thistlethwaite
Keyword(s):  
Ecological Effects ◽  
Field Of Study

Application of Laser Induced Luminescence in Ecology

1993 ◽  
Vol 27 (7-8) ◽  
pp. 547-556 ◽  
Author(s):  
M. Gaft
Keyword(s):  
New Technology ◽  
Ore Deposits ◽  
Ecological Effects ◽  
Low Grade ◽  
Ecological Damage

Exhaustion of rich ore deposits is making it necessary to bring low-grade ores into production, resulting in a sharply increased volume of excavated rock. Huge quantities of waste fill vast areas of the Earth's surface, with severe ecological effects. But the ecological damage could be reduced by extracting additional products from the tailings. Laseroluminescent sorting is a new technology by which this may be achieved. The most promising subjects are about 50 minerals including diamonds, native Au and Ag, ores of V, Pb, Zn, Sn, Li, Be, W, Mo, Zr, Sr, halite, apatite, phosphorite, fluorite, calcite, barite, anhydrite.

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