Effects of plant size and water relations on gas exchange and growth of the desert shrub <i>Larrea tridentata</i>

TitleEffects of plant size and water relations on gas exchange and growth of the desert shrub Larrea tridentata
Publication TypeJournal Article
Year of Publication1994
AuthorsFranco A.C., de Soyza A.G., Virginia R.A, Reynolds J.F., Whitford WG
JournalOecologia
Volume97
Pagination171-178
Date Published1994
Call Number00456
Keywordsarticle, articles, gas-exchange,Larrea, journal, journals, Larrea,gas-exchange, Larrea,phenology, Larrea,water relations, phenology,Larrea, stomatal conductance,Larrea, water relations,Larrea
AbstractLarrea tridentata is a xerophytic evergreen shrub, dominant in the arid regions of the southwestern United States. We examined relationships between gas-exchange characteristics, plant and soil water relations, and growth responses of large versus small shrubs of L. tridentata over the course of a summer growing season in the Chihuahuan Desert of southern New Mexico, USA. The soil wetting front did not reach 0.6 m, and soils at depth of 0.6 and 0.9 m remained dry throughout the summer, suggesting that L. tridentata extracts water largely from soil near the surface. Surface soil layers (L. tridentata.
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