The use of systems open to emigration for the study of population regulation: Bluegill.

Persistent Link:
http://hdl.handle.net/10150/185053
Title:
The use of systems open to emigration for the study of population regulation: Bluegill.
Author:
Hill, Jeffrey Phillips.
Issue Date:
1990
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:
Experiments with bluegill (Lepomis macrochirus) were conducted using the open system proposed by Matter et al. (1989) to examine factors that influence animal residency in these systems. Tests of the exits from the system suggested that they accurately identified resident and emigrant animals. The food and cover provided were shown to be appropriate and sufficient resources for bluegill. Shade covers and initial closure of exit used by Bianchi (1984) were unnecessary to achieve animal residency. The number of resident fish at a fixed level of resources fluctuated widely due to some undetermined and uncontrolled environmental conditions. These results indicate that falsification tests of hypothesized mechanisms of population regulation in open systems, may not be conclusive unless all possible confounding variables can be excluded.
Type:
text; Dissertation-Reproduction (electronic)
Keywords:
Biology
Degree Name:
Ph.D.
Degree Level:
doctoral
Degree Program:
Renewable Natural Resources; Graduate College
Degree Grantor:
University of Arizona
Advisor:
Matter, William J.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleThe use of systems open to emigration for the study of population regulation: Bluegill.en_US
dc.creatorHill, Jeffrey Phillips.en_US
dc.contributor.authorHill, Jeffrey Phillips.en_US
dc.date.issued1990en_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.abstractExperiments with bluegill (Lepomis macrochirus) were conducted using the open system proposed by Matter et al. (1989) to examine factors that influence animal residency in these systems. Tests of the exits from the system suggested that they accurately identified resident and emigrant animals. The food and cover provided were shown to be appropriate and sufficient resources for bluegill. Shade covers and initial closure of exit used by Bianchi (1984) were unnecessary to achieve animal residency. The number of resident fish at a fixed level of resources fluctuated widely due to some undetermined and uncontrolled environmental conditions. These results indicate that falsification tests of hypothesized mechanisms of population regulation in open systems, may not be conclusive unless all possible confounding variables can be excluded.en_US
dc.typetexten_US
dc.typeDissertation-Reproduction (electronic)en_US
dc.subjectBiologyen_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.advisorMatter, William J.en_US
dc.contributor.committeememberTash, Jerry C.en_US
dc.contributor.committeememberZiebell, Charles D.en_US
dc.contributor.committeememberMannan, R. Williamen_US
dc.contributor.committeememberShaw, William W.en_US
dc.identifier.proquest9025072en_US
dc.identifier.oclc708251510en_US
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