Establishment of Range Grasses on Various Seedbeds at Creosotebush [Larrea tridentata] Sites in Arizona, U.S.A., and Chihuahua, Mexico
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چکیده
منابع مشابه
The Effect of Neighbors on Root Distribution in a Creosotebush (Larrea Tridentata) Population
We excavated and mapped the lateral extension of 32 creosotebush shrubs (Larrea tridentata) in the Chihuahuan desert of New Mexico to examine the effect of neighborhood interaction on root distribution. The smallest closed-angle polygon encompassing all roots of an individual was taken as a representation of its root system. Several geometrical characteristics of these polygons were measured an...
متن کاملNordihydroguaiaretic Acid Recovery from Larrea Tridentata by Microwave-assisted Extraction
Nordihydroguaiaretic acid (NDGA) is a powerful antioxidant with biological activities of great interest in several health areas, including antiviral, cancer chemopreventive, and antitumorgenic. Little information is available on extraction methods of NDGA from Larrea tridentata. Hence, the aim of this study was to develop a rapid and effective microwave-assisted extraction (MAE) method for NDGA...
متن کاملPersistent environmental pollutants in eggs of aplomado falcons from Northern Chihuahua, Mexico, and south Texas, USA.
The northern aplomado falcon (Falco femoralis septentrionalis) disappeared from south Texas in the 1940s. Due to great success in the release of captive-reared aplomado falcons in south Texas, there are currently more than 40 established nesting pairs in the region. Addled eggs from aplomado falcons nesting in northern Chihuahua and south Texas were analyzed to determine organochlorine (OC) and...
متن کاملEffects of Variable Moisture Availability on Seed Germination in Three Populations of Larrea tridentata
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متن کاملCarbon gain and hydraulic limits on water use differ between size classes of Larrea tridentata
Juvenile woody desert perennials often exhibit higher rates of transpiration than co-occurring adults, which may facilitate establishment by increasing carbon gain when water is plentiful, but increase the risk of hydraulic failure during drought. We tested three hypotheses regarding the role of hydraulic limits in two size classes of Larrea tridentata: 1) small plants grow faster and use more ...
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ژورنال
عنوان ژورنال: Journal of Range Management
سال: 1986
ISSN: 0022-409X
DOI: 10.2307/3898767