Results 111 to 120 of about 624 (150)
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Contact dermatitis from Larrea (creosote bush)
Journal of the American Academy of Dermatology, 1986Six men suffering from acute dermatitis had positive patch tests to Larrea (creosote bush). The lesions preferentially involved sun-exposed sites, simulating a photodermatitis, but also were on the legs and scrotum. Our findings were more consistent with contact allergy than with a primary irritant or a phototoxic response.
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The Organization of the Creosote Bush with Respect to Drought
Ecology, 1934The creosote bush, Larrea tridentata Cav.,1 is the most widely distributed, ubiquitous and successful perennial plant in the southern desert regions of North America. Its range extends from southern California to central Texas and southward into lower California, and the arid plateau of northern and central Mexico, a domain over which it is one of the ...
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Livestock Effects on Genetic Variation of Creosote Bushes in Patagonian Rangelands
Environmental Conservation, 2018SummaryGenetic diversity is the raw material for species’ persistence over time, providing the potential to survive stochastic events, as well as climate and/or human-induced environmental changes. Biodiversity in dry rangelands is decreasing due to intensification of livestock production, but its effects on the genetic diversity of the consumed biota ...
Cintia P. Souto, Mariana Tadey
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Creosote Bush and the Lower Sonoran Zone of the Southwest
American Midland Naturalist, 1938Creosote Bush (Larrea divaricata Cav.)I is among the most reliable of "indicators" of natural biologic areas in the Southwest, delimiting the Lower Sonoran Zone fairly sharply. The recent articles2 on the effect of sustained subzero weather upon Larrea in the Virgin River Valley of Utah suggest certain earlier studies made upon this shrub.
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CREOSOTE BUSH: LONG‐LIVED CLONES IN THE MOJAVE DESERT
American Journal of Botany, 1980Creosote bush clones in the Mojave Desert develop by irregular radial growth, stem segmentation and the production of new stems at the outer edge of stem segments. The resulting circular clone encloses a central bare area as the central dead wood rots away. Old clones become elliptical and may exceed 20 m in length.
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Fire and Changes in Creosote Bush Scrub of the Western Sonoran Desert, California
American Midland Naturalist, 1986Seven years of above normal precipitation between 1976 and 1983 encouraged heavy growth of native annuals and exotic grasses in the western Sonoran Desert. Unprecedented fires in creosote bush scrub started mostly after 1978. Analysis of several burns near Palm Springs revealed that most shrubs, including Larrrea tridentata, Ambrosia dumosa and Opuntia
David E. Brown, Richard A. Minnich
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INTERPOPULATION DIFFERENCES IN TOLERANCE TO CREOSOTE BUSH RESIN IN DESERT WOODRATS (NEOTOMA LEPIDA)
Ecology, 2000Plant secondary metabolites (PSMs) can affect survival, reproduction, and distribution of herbivores. Individuals with a high capacity to tolerate PSMs will experience fewer and smaller adverse effects than less tolerant individuals. Theoretically, the capacity to tolerate PSMs can be acquired during development, modulated during adulthood, or ...
Antonio M. Mangione +2 more
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Soil Microbial Fingerprints, Carbon, and Nitrogen in a Mojave Desert Creosote‐Bush Ecosystem
Soil Science Society of America Journal, 2007Creosote‐bush [ Larrea tridentata (Sessé & Moc. ex DC.) Coville] shrubs in California's Mojave Desert support well‐developed soil resource islands, where individual shrubs define areas of elevated soil nutrients, water‐holding capacity, and microbial activity.
Stephanie A. Ewing +4 more
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The Journal of Animal Ecology, 1975
However, territorial defence, a component of site-dependent behaviour is extremely rare in grasshoppers (Acridoidea). The only species now known to defend territories (among more than 150 species studied -Jacobs 1953; Otte 1970) isLigurotettix coquilletti McNeill, a gomphocerine grasshopper living on creosote bushes (Larrea divaricata Cav.) in the ...
Daniel Otte, Anthony Joern
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However, territorial defence, a component of site-dependent behaviour is extremely rare in grasshoppers (Acridoidea). The only species now known to defend territories (among more than 150 species studied -Jacobs 1953; Otte 1970) isLigurotettix coquilletti McNeill, a gomphocerine grasshopper living on creosote bushes (Larrea divaricata Cav.) in the ...
Daniel Otte, Anthony Joern
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European Journal of Pharmacology, 1998
An ethnomedically-driven approach was used to evaluate the ability of a pure compound isolated from the creosote bush (Larrea tridentata) to lower plasma glucose concentration in two mouse models of type 2 diabetes. The results indicated that plasma glucose concentration fell approximately 8 mmol/l in male C57BL/ks-db/db or C57BL/6J-ob/ob mice ...
J, Luo +11 more
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An ethnomedically-driven approach was used to evaluate the ability of a pure compound isolated from the creosote bush (Larrea tridentata) to lower plasma glucose concentration in two mouse models of type 2 diabetes. The results indicated that plasma glucose concentration fell approximately 8 mmol/l in male C57BL/ks-db/db or C57BL/6J-ob/ob mice ...
J, Luo +11 more
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