Fire and Changes in Creosote Bush Scrub of the Western Sonoran Desert, California

1986 ◽  
Vol 116 (2) ◽  
pp. 411 ◽  
Author(s):  
David E. Brown ◽  
Richard A. Minnich
Keyword(s):  
Sonoran Desert ◽  
Creosote Bush ◽  
Creosote Bush Scrub

scholarly journals The floral hosts and distribution of a supposed creosote bush specialist, Colletes stepheni Timberlake (Hymenoptera: Colletidae)

2015 ◽  
pp. 1-12
Author(s):  
Rebekah A. Nelson ◽  
Terry L Griswold
Keyword(s):  
Great Basin ◽  
Sonoran Desert ◽  
Host Shift ◽  
Creosote Bush ◽  
Geologic History ◽  
Limited Distribution ◽  
Potential Host ◽  
Pollen Sources ◽  
History Of ◽  
Plant Pollen

Colletes stepheni Timberlake, previously thought to be a narrow oligolege of Larrea (creosote bush) of limited distribution in the Sonoran Desert, is found to be a much more widely distributed psammophile of the Sonoran, Mojave and Great Basin Deserts that utilizes two unrelated plant pollen sources, Larrea (Zygophyllaceae) and Psorothamnus (Fabaceae). The geologic history of the region suggests a potential host shift from the more ancient occupant, Psorothamnus, to the Neogene colonizer, Larrea.

The Lower Colorado River Valley: A Pleistocene Desert

1986 ◽  
Vol 25 (3) ◽  
pp. 392-400 ◽  
Author(s):  
Kenneth L. Cole
Keyword(s):  
Sonoran Desert ◽  
Colorado River ◽  
River Valley ◽  
Creosote Bush ◽  
Yucca Brevifolia ◽  
Larrea Divaricata ◽  
Coleogyne Ramosissima ◽  
Mohave Desert ◽  
Lower Colorado River ◽  
Desert Scrub

A chronological sequence of plant macrofossil assemblages from twenty-five pack rat middens provides a record of desert scrub vegetation for most of the last 13,380 yr B.P. from a hyperarid portion of the lower Colorado River Valley. At the end of the late Wisconsin, and probably during much of the Quaternary, the Picacho Peak area, Imperial County, California, supported a typical Mohave Desert association of Larrea divaricata (creosote bush), Coleogyne ramosissima (blackbrush), Yucca brevifolia (Joshua tree), and Y. whipplei (Whipple yucca). Recent arrivals of Sonoran Desert plants such as Olneya tesota (ironwood) and Fouquieria splendens (ocotillo) suggest that the area supported relatively modern Sonoran desert scrub species for relatively short periods during interglaciations.

EFFECT OF MANIPULATION OF WATER AND NITROGEN SUPPLIES ON THE QUANTITATIVE PHENOLOGY OF LARREA TRIDENTATA (CREOSOTE BUSH) IN THE SONORAN DESERT OF CALIFORNIA

1988 ◽  
Vol 75 (8) ◽  
pp. 1163-1174 ◽  
Author(s):  
M. R. Sharifi ◽  
F. C. Meinzer ◽  
E. T. Nilsen ◽  
P. W. Rundel ◽  
R. A. Virginia ◽  
...  
Keyword(s):  
Sonoran Desert ◽  
Larrea Tridentata ◽  
Creosote Bush ◽  
Nitrogen Supplies

Effects of high fire frequency in creosote bush scrub vegetation of the Mojave Desert

2012 ◽  
Vol 21 (1) ◽  
pp. 61 ◽  
Author(s):  
Matthew L. Brooks
Keyword(s):  
Mojave Desert ◽  
Plant Invasions ◽  
Fire Frequency ◽  
Creosote Bush ◽  
Community Characteristics ◽  
Short Term ◽  
Desert Ecosystems ◽  
Perennial Plants ◽  
Bromus Rubens ◽  
Creosote Bush Scrub

Plant invasions can increase fire frequency in desert ecosystems where fires were historically infrequent. Although there are many resource management concerns associated with high frequency fire in deserts, fundamental effects on plant community characteristics remain largely unstudied. Here I describe the effects of fire frequency on creosote bush scrub vegetation in the Mojave Desert, USA. Biomass of the invasive annual grass Bromus rubens L. increased following fire, but did not increase further with additional fires. In contrast, density, cover and species richness of native perennial plants each decreased following fire and continued to decrease with subsequent fires, although not as dramatically as after the initial fire. Responses were similar 5 and 14 years post-fire, except that cover of Hymenoclea salsola Torr. & A. Gray and Achnatherum speciosa Trin. & Rupr. both increased in areas burnt once. These results suggest that control of B. rubens may be equally warranted after one, two or three fires, but revegetation of native perennial plants is most warranted following multiple fires. These results are valid within the scope of this study, which is defined as relatively short term vegetation responses (≤14 years) to short fire return intervals (6.3 and 7.3 years for the two and three fire frequency levels) within creosote bush scrub of the Mojave Desert.

Influence of Selected Endomycorrhizae from the Sonoran Desert and Glomus intraradices on Growth Response and Gas Exchange of Hibiscus rosa-sinensis L. cv. Leprechaun

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 501d-501
Author(s):  
Jonathan N. Egilla ◽  
Fred T. Davies
Keyword(s):  
Gas Exchange ◽  
Sonoran Desert ◽  
Growth Response ◽  
Glomus Intraradices ◽  
Root Colonization ◽  
Gas Exchange Parameters ◽  
Hibiscus Rosa Sinensis ◽  
Low Phosphorus ◽  
The Relationship ◽  
Exchange Parameters

Six endomycorrhiza isolates from the Sonoran Desert of Mexico [Desert-14(18)1, 15(9)1, 15(15)1, Palo Fierro, Sonoran, and G. geosporum] were evaluated with a pure isolate of Glomus intraradices for their effect on the growth and gas exchange of Hibiscus rosa-sinensis L. cv. Leprechaun under low phosphorus fertility (11 mg P/L). Rooted cuttings of Hibiscus plants were inoculated with the seven mycorrhiza isolates and grown for 122 days. Gas exchange measurements were made on days 26, 88, and 122 after inoculation, and plants were harvested on day 123 for growth analysis. Plants inoculated with the seven isolates had 70% to 80% root colonization at harvest. Plants inoculated with G. intraradices had significantly higher leaf, shoot and root dry matter (DM), leaf DM/area (P ≤ 0.05) than those inoculated with any of the six isolates, and greater leaf area (LA) than Desert-15(9)1 and 15(15)1. Uninoculated plants had significantly lower leaf, shoot, root DM, leaf DM/area and LA (P ≤ 0.05) than the inoculated plants. There were no differences among the seven isolates in any of the gas exchange parameters measured [photosynthesis (A) stomatal conductance (gs), the ratio of intercellular to external CO2 (ci/ca), A to transpiration (E) ratio (A/E)]. The relationship between inoculated and uninoculated plants in these gas exchange parameters were variable on day 122 after inoculation.

Management of Dairy Waste in the Sonoran Desert Using Constructed Wetland Technology

1999 ◽  
Vol 40 (3) ◽  
pp. 57-65 ◽  
Author(s):  
Martin M. Karpiscak ◽  
Robert J. Freitas ◽  
Charles P. Gerba ◽  
Luis R. Sanchez ◽  
Eylon Shamir
Keyword(s):  
Sonoran Desert ◽  
Suspended Solids ◽  
Waste Treatment ◽  
Oxygen Demand ◽  
Dairy Wastewater ◽  
Chemical Parameters ◽  
Treatment Facility ◽  
Physical Chemical ◽  
Scirpus Validus ◽  
Surface Wetland

An integrated wastewater treatment facility, consisting of upper (solids separators, anaerobic lagoons, and aerobic ponds) and lower (wetland cells) subsystems, has been built to replace the lagoon at a dairy in Arizona, USA. The collection sump of the new waste treatment facility collects all dairy wastewater outflow. Wastewater is then pumped to solids separators, and flows by gravity to anaerobic ponds and aerobic ponds. The upper subsystem is expected to treat the water sufficiently so that the wetland cells may achieve further pollutant reductions. The lower subsystem, comprised of 8 surface wetland cells with an approximate surface area of 5,000 m2, receives outflow from the ponds. The cells are planted with cattail (Typha domingensis), soft-stem bulrush (Scirpus validus), and reed (Phragmites australis). After treatment is completed via the lagoons and ponds followed by the wetland cells, the wastewater can be reused to flush barns or to irrigate crops. Performance of the overall system is evaluated by measuring physical, chemical and biological parameters in water samples taken from selected locations along the treatment system. Chemical parameters studied include biochemical oxygen demand, pH, total suspended solids, nitrogen species. Biological monitoring included coliforms (total and fecal) and Listeria monocytogenes.

A Microbiome Analysis of Soil Samples from Three Abandoned Lead-Silver Mines in the Arizona Sonoran Desert

2020 ◽  
Vol 49 (1) ◽  
Author(s):  
Daniel A. Lucas ◽  
Thomas M. Cahill ◽  
Pamela A. Marshall
Keyword(s):  
Sonoran Desert ◽  
Soil Samples ◽  
Microbiome Analysis

METAL CONCENTRATIONS OF DUST IN RURAL AREAS FROM ARID REGIONS OF THE SONORAN DESERT

2017 ◽  
Author(s):  
A. Leyva-Haro ◽  
◽  
R. Del Rio-Salas ◽  
V. Moreno-Rodriguez ◽  
F. Camacho-Cañez ◽  
...  
Keyword(s):  
Rural Areas ◽  
Sonoran Desert ◽  
Arid Regions ◽  
Metal Concentrations
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