Persistent Link:
http://hdl.handle.net/10150/277880
Title:
Flora and vegetation of the Tucson Mountains, Pima County, Arizona
Author:
Rondeau, Renee Jane, 1956-
Issue Date:
1991
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
I compiled the first vascular flora of the Tucson Mountains of southeastern Arizona, part of the Arizona Upland subdivision of the Sonoran Desert. The study area consisted of over 40,000 hectares, with two principal biotic communities: desertscrub and desert-grassland. Over 300 km of trails, ridges, washes, canyons, and peaks were surveyed in a three year period, covering all elevations and habitats. This was supplemented by examination of herbarium records. The area is unusually rich compared to other regional floras in the state of Arizona, including a vascular flora of 605 specific and infraspecific taxa in 331 genera and 80 families. The distribution of life forms is: herbaceous annuals and perennials (73%), shrubs (9%), subshrubs (8%), succulents (4%), and trees (1%). Obligate annuals make up 45% of the flora, of which 62% are obligate spring annuals, 33% obligate summer annuals, and 5% either spring or summer annuals. Historical records from the first part of the century are reviewed and compared with the present day flora; 27 species that were found in the Tucson Mountains prior to 1950 have not been collected since, in spite of increased sampling effort. A disproportionate number of these locally-extirpated species are winter annuals.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Biology, Botany.; Biology, Ecology.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College
Degree Grantor:
University of Arizona
Advisor:
McLaughlin, Stephen P.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleFlora and vegetation of the Tucson Mountains, Pima County, Arizonaen_US
dc.creatorRondeau, Renee Jane, 1956-en_US
dc.contributor.authorRondeau, Renee Jane, 1956-en_US
dc.date.issued1991en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractI compiled the first vascular flora of the Tucson Mountains of southeastern Arizona, part of the Arizona Upland subdivision of the Sonoran Desert. The study area consisted of over 40,000 hectares, with two principal biotic communities: desertscrub and desert-grassland. Over 300 km of trails, ridges, washes, canyons, and peaks were surveyed in a three year period, covering all elevations and habitats. This was supplemented by examination of herbarium records. The area is unusually rich compared to other regional floras in the state of Arizona, including a vascular flora of 605 specific and infraspecific taxa in 331 genera and 80 families. The distribution of life forms is: herbaceous annuals and perennials (73%), shrubs (9%), subshrubs (8%), succulents (4%), and trees (1%). Obligate annuals make up 45% of the flora, of which 62% are obligate spring annuals, 33% obligate summer annuals, and 5% either spring or summer annuals. Historical records from the first part of the century are reviewed and compared with the present day flora; 27 species that were found in the Tucson Mountains prior to 1950 have not been collected since, in spite of increased sampling effort. A disproportionate number of these locally-extirpated species are winter annuals.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectBiology, Botany.en_US
dc.subjectBiology, Ecology.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorMcLaughlin, Stephen P.en_US
dc.identifier.proquest1343825en_US
dc.identifier.bibrecord.b26882565en_US
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