Search results
Results from the WOW.Com Content Network
Ecologists can define this in many ways, but one way is through an estimate of plant mortality. Fires can burn at three elevation levels. Ground fires will burn through soil that is rich in organic matter. Surface fires will burn through living and dead plant material at ground level. Crown fires will burn through the tops of shrubs and trees.
The term applies to a large stream or a small river. The word is used in Scotland and England (especially North East England ) and in parts of Ulster , Kansas , Australia and New Zealand . Etymology
waste stream - Waste materials that are either of a particular type (e.g. 'timber waste stream') or produced a particular source (e.g. 'C&I waste stream'). waste treatment - where some additional processing is undertaken of a particular waste. This may be done to reduce its toxicity, or increase its degradability or compostability.
The notion of fire as a tool had somewhat evolved by the late 1970s as the National Park Service authorized and administered controlled burns. [67] Following prescribed fire reintroduction, the Yellowstone fires of 1988 occurred, which significantly politicized fire management. The ensuing media coverage was a spectacle that was vulnerable to ...
In fire-prone forests, coarse woody debris can be a significant fuel during a wildfire. High amounts of fuels can lead to increased fire severity and size. CWD may be managed to reduce fuel levels, particularly in forests where fire exclusion has resulted in the buildup of fuels.
Ephemeral streams have, relative to their perennial counterparts, lower species richness; the streams are "potentially demanding" for inhabitants, although some species do reside. [27] Ephemeral rivers sometimes form waterholes in geological depressions or areas scoured by erosion, and are common in arid regions of Australia. [28] [29]
Fire is the rapid oxidation of a material (the fuel) in the exothermic chemical process of combustion, releasing heat, light, and various reaction products. [1] [a] At a certain point in the combustion reaction, called the ignition point, flames are produced.
The term limnology was coined by François-Alphonse Forel (1841–1912) who established the field with his studies of Lake Geneva.Interest in the discipline rapidly expanded, and in 1922 August Thienemann (a German zoologist) and Einar Naumann (a Swedish botanist) co-founded the International Society of Limnology (SIL, from Societas Internationalis Limnologiae).