ALPECOLE
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ALPECOLe: Glossary

T


talik
A layer or body of unfrozen ground occurring in a permafrost area due to a local anomaly in thermal, hydrological, hydrogeological, or hydrochemical conditions
 
talus
An accumulation of unstable rock fragments below steep slopes. The fragments are sorted by gravity with the largest ones situated at the bottom.
 
taxon
A taxonomic unit (e.g. a species, genus)
 
taxonomy
Field of biology that deals with the definition, description and classification of living organisms
 
Tethys ocean
A large sea separating Gondwanaland (extensive Southern hemisphere supercontinent) and Laurasia (Northern hemisphere supercontinent) during the Mesozoic era
 
thermal conductivity
The quantity of heat that will flow through a unit area of a substance in unit time under a unit temperature gradient
 
till
Unstratified glacial drift deposited directly by the ice and consisting of clay, sand, gravel, and boulders intermingled in any proportion
 
transhumance
The migration of human populations with animal herds following the course of the season
 
treeline
The upper climate driven elevational limit of groups of trees of at least 3 m height, disregarding isolated individuals that may be found at even higher elevation
 
trichome
Hair
 
turgor
Cell pressure
 

 

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29 August 2011
© ALPECOLe 2002-2007