Abstract:
:Data from the US/IBP Desert Biome validation studies indicate that above-ground production and biomass allocated to reproduction in Larrea tridentata vary from one year to another depending upon the timing and extent of soil-moisture availability. In an attempt to verify these observations and determine to what extent water availability can affect total aboveground production and reproductive allocation in this widely distributed warm desert shrub, a series of soil-moisture augmentation experiments were conducted. High levels of soil moisture had a greater effect on reproductive allocation than on total above-ground production. Enhanced soil moisture during the period of active growth increased total above-ground production and reduced the percentage of biomass allocated to reproduction. Enhanced soil moisture during the normal periods of little or no growth did not increase total above-ground production.
journal_name
Oecologiajournal_title
Oecologiaauthors
Cunningham GL,Syvertsen JP,Reynolds JF,Willson JMdoi
10.1007/BF00347929subject
Has Abstractpub_date
1979-01-01 00:00:00pages
113-123issue
2eissn
0029-8549issn
1432-1939pii
10.1007/BF00347929journal_volume
40pub_type
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