Depth distribution and seasonal populations of mesquite-nodulating rhizobia in warm desert ecosystems. Jenkins, M. B., Virginia, R. A., & Jarrell, W. M. Soil Science Society of America Journal, 1988. abstract bibtex Deeply rooted woody legumes are common in desert ecosystems yet little is known about the distribution of their rhizobial symbionts in relation to their roots and soil properties of the systems. The distribution of mesquite (Prosopis glandulosa Torr.)- nodulating rhizobia was investigated to depths of 13 m in warm desert eco systems. Soils were collected under mesquite from sand dune and playa ecosystems in the California Sonoran Desert, and from sand dune, playa, arroyo, and grassland ecosystems in Ten Chihuahuan Desert of southern New Mexico. A Larrea tridentata (DC.) Coville (creosote bush) ecosystem in New Mexico, containing no mesquite, was sampled as a reference. Three intact soil cores from each ecosystem were removed during the winter, spring, and fall from the New Mexico sites, and the winter from the California sites. Significant rhizobial population densities were measured in soil from 1- to 4-m depths at the sand due, arroyo, and the playa ecosystems. Tat the playa ecosystem in New Mexico population densities \textgreater10$^{\textrm{5}}$ cells kg$^{\textrm{-1}}$ were measured in soils from 8-m depth, and root nodules containing rhizobia were recovered in soil samples from 3-, 4-, and 7-m depths. Multiple-regression analysis of rhizobial concentration against soil NH4-N, PO4-P, electrical conductivity, and gravimetric water content indicated that no single soil factor was related significantly to rhizobial concentration across the ecosystems. Rhizobial densities varied with season in the dune and arroyo ecosystems. In these desert ecosystems significant rhizobial populations, root nodules, and presumable symbiotic N2 fixation occur at soil depths rarely studied.
@article{jenkins_depth_1988,
title = {Depth distribution and seasonal populations of mesquite-nodulating rhizobia in warm desert ecosystems},
volume = {52},
abstract = {Deeply rooted woody legumes are common in desert ecosystems yet little is known about the distribution of their rhizobial symbionts in relation to their roots and soil properties of the systems. The distribution of mesquite (\textit{Prosopis glandulosa} Torr.)- nodulating rhizobia was investigated to depths of 13 m in warm desert eco systems. Soils were collected under mesquite from sand dune and playa ecosystems in the California Sonoran Desert, and from sand dune, playa, arroyo, and grassland ecosystems in Ten Chihuahuan Desert of southern New Mexico. A \textit{Larrea tridentata} (DC.) Coville (creosote bush) ecosystem in New Mexico, containing no mesquite, was sampled as a reference. Three intact soil cores from each ecosystem were removed during the winter, spring, and fall from the New Mexico sites, and the winter from the California sites. Significant rhizobial population densities were measured in soil from 1- to 4-m depths at the sand due, arroyo, and the playa ecosystems. Tat the playa ecosystem in New Mexico population densities {\textgreater}10$^{\textrm{5}}$ cells kg$^{\textrm{-1}}$ were measured in soils from 8-m depth, and root nodules containing rhizobia were recovered in soil samples from 3-, 4-, and 7-m depths. Multiple-regression analysis of rhizobial concentration against soil NH4-N, PO4-P, electrical conductivity, and gravimetric water content indicated that no single soil factor was related significantly to rhizobial concentration across the ecosystems. Rhizobial densities varied with season in the dune and arroyo ecosystems. In these desert ecosystems significant rhizobial populations, root nodules, and presumable symbiotic N2 fixation occur at soil depths rarely studied.},
journal = {Soil Science Society of America Journal},
author = {Jenkins, Michael B. and Virginia, R. A. and Jarrell, Wesley M.},
year = {1988},
keywords = {JRN, prosopis-nodulating, rhizobia}
}
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The distribution of mesquite (<i>Prosopis glandulosa</i> Torr.)- nodulating rhizobia was investigated to depths of 13 m in warm desert eco systems. Soils were collected under mesquite from sand dune and playa ecosystems in the California Sonoran Desert, and from sand dune, playa, arroyo, and grassland ecosystems in Ten Chihuahuan Desert of southern New Mexico. A <i>Larrea tridentata</i> (DC.) Coville (creosote bush) ecosystem in New Mexico, containing no mesquite, was sampled as a reference. Three intact soil cores from each ecosystem were removed during the winter, spring, and fall from the New Mexico sites, and the winter from the California sites. Significant rhizobial population densities were measured in soil from 1- to 4-m depths at the sand due, arroyo, and the playa ecosystems. Tat the playa ecosystem in New Mexico population densities \\textgreater10$^{\\textrm{5}}$ cells kg$^{\\textrm{-1}}$ were measured in soils from 8-m depth, and root nodules containing rhizobia were recovered in soil samples from 3-, 4-, and 7-m depths. Multiple-regression analysis of rhizobial concentration against soil NH4-N, PO4-P, electrical conductivity, and gravimetric water content indicated that no single soil factor was related significantly to rhizobial concentration across the ecosystems. Rhizobial densities varied with season in the dune and arroyo ecosystems. In these desert ecosystems significant rhizobial populations, root nodules, and presumable symbiotic N2 fixation occur at soil depths rarely studied.","journal":"Soil Science Society of America Journal","author":[{"propositions":[],"lastnames":["Jenkins"],"firstnames":["Michael","B."],"suffixes":[]},{"propositions":[],"lastnames":["Virginia"],"firstnames":["R.","A."],"suffixes":[]},{"propositions":[],"lastnames":["Jarrell"],"firstnames":["Wesley","M."],"suffixes":[]}],"year":"1988","keywords":"JRN, prosopis-nodulating, rhizobia","bibtex":"@article{jenkins_depth_1988,\n\ttitle = {Depth distribution and seasonal populations of mesquite-nodulating rhizobia in warm desert ecosystems},\n\tvolume = {52},\n\tabstract = {Deeply rooted woody legumes are common in desert ecosystems yet little is known about the distribution of their rhizobial symbionts in relation to their roots and soil properties of the systems. The distribution of mesquite (\\textit{Prosopis glandulosa} Torr.)- nodulating rhizobia was investigated to depths of 13 m in warm desert eco systems. Soils were collected under mesquite from sand dune and playa ecosystems in the California Sonoran Desert, and from sand dune, playa, arroyo, and grassland ecosystems in Ten Chihuahuan Desert of southern New Mexico. A \\textit{Larrea tridentata} (DC.) Coville (creosote bush) ecosystem in New Mexico, containing no mesquite, was sampled as a reference. Three intact soil cores from each ecosystem were removed during the winter, spring, and fall from the New Mexico sites, and the winter from the California sites. Significant rhizobial population densities were measured in soil from 1- to 4-m depths at the sand due, arroyo, and the playa ecosystems. Tat the playa ecosystem in New Mexico population densities {\\textgreater}10$^{\\textrm{5}}$ cells kg$^{\\textrm{-1}}$ were measured in soils from 8-m depth, and root nodules containing rhizobia were recovered in soil samples from 3-, 4-, and 7-m depths. Multiple-regression analysis of rhizobial concentration against soil NH4-N, PO4-P, electrical conductivity, and gravimetric water content indicated that no single soil factor was related significantly to rhizobial concentration across the ecosystems. Rhizobial densities varied with season in the dune and arroyo ecosystems. In these desert ecosystems significant rhizobial populations, root nodules, and presumable symbiotic N2 fixation occur at soil depths rarely studied.},\n\tjournal = {Soil Science Society of America Journal},\n\tauthor = {Jenkins, Michael B. and Virginia, R. A. and Jarrell, Wesley M.},\n\tyear = {1988},\n\tkeywords = {JRN, prosopis-nodulating, rhizobia}\n}\n\n","author_short":["Jenkins, M. B.","Virginia, R. 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