Epilithic diatoms as indicators of stream condition in arid lotic ecosystems of the american southwest.

Persistent Link:
http://hdl.handle.net/10150/191235
Title:
Epilithic diatoms as indicators of stream condition in arid lotic ecosystems of the american southwest.
Author:
Lawson, Laurie Linwood.
Issue Date:
1999
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:
The objective of this study has been to investigate whether epilithic diatoms could be used as a tool for assessing the condition of small to medium sized Arizona streams. Eighty-four perennial streams throughout the state were sampled during spring months of 1993, 1994 and 1995. One hundred and ninety-five samples were collected from 115 sites for water chemistry, epilithic diatoms, and stream characteristics. Exploratory analysis techniques were employed to determine if unique diatoms assemblages could be associated with any physical stream characteristics or water chemistry constituents. Multivariate and univariate analysis techniques failed to uncover any relationships between diatom species and environmental variables. Samples were dominated by species having ubiquitous distributions and wide environmental tolerance.
Type:
Dissertation-Reproduction (electronic); text
Keywords:
Hydrology.; Diatoms.; Fisheries -- Southern States.
Degree Name:
Ph. D.
Degree Level:
doctoral
Degree Program:
Renewable Natural Resources; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Matter, William

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleEpilithic diatoms as indicators of stream condition in arid lotic ecosystems of the american southwest.en_US
dc.creatorLawson, Laurie Linwood.en_US
dc.contributor.authorLawson, Laurie Linwood.en_US
dc.date.issued1999en_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.abstractThe objective of this study has been to investigate whether epilithic diatoms could be used as a tool for assessing the condition of small to medium sized Arizona streams. Eighty-four perennial streams throughout the state were sampled during spring months of 1993, 1994 and 1995. One hundred and ninety-five samples were collected from 115 sites for water chemistry, epilithic diatoms, and stream characteristics. Exploratory analysis techniques were employed to determine if unique diatoms assemblages could be associated with any physical stream characteristics or water chemistry constituents. Multivariate and univariate analysis techniques failed to uncover any relationships between diatom species and environmental variables. Samples were dominated by species having ubiquitous distributions and wide environmental tolerance.en_US
dc.description.notehydrology collectionen_US
dc.typeDissertation-Reproduction (electronic)en_US
dc.typetexten_US
dc.subjectHydrology.en_US
dc.subjectDiatoms.en_US
dc.subjectFisheries -- Southern States.en_US
thesis.degree.namePh. D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.disciplineRenewable Natural Resourcesen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.chairMatter, Williamen_US
dc.contributor.committeememberMaughan, O. Eugeneen_US
dc.contributor.committeememberGlenn, Edward P.en_US
dc.contributor.committeememberShaw, Williamen_US
dc.contributor.committeememberHawkins, Richarden_US
dc.identifier.oclc213866897en_US
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