Abundance, distribution, and habitat use of Yuma clapper rails (Rallus longirostris yumanensis) in the Colorado River Delta,Mexico

Persistent Link:
http://hdl.handle.net/10150/278751
Title:
Abundance, distribution, and habitat use of Yuma clapper rails (Rallus longirostris yumanensis) in the Colorado River Delta,Mexico
Author:
Hinojosa Huerta, Osuel Mario
Issue Date:
2000
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 conducted call-response surveys for Yuma clapper rails in the Colorado River delta, Mexico during the breeding seasons of 1999 and 2000 to estimate abundance, determine distribution, and identify patterns of habitat use. The maximum estimate of abundance was 6,629 individuals (95% C.I. 4,859 to 8,399). Rails were widely distributed in the delta, occupying almost all marshlands dominated by cattail. Rail density was higher in the Cienega de Santa Clara than in the other wetlands of the delta. High densities of clapper rails were associated with increased water depth, high cattail coverage, high vegetation coverage, low saltcedar coverage, proximity to shoreline, and increased salinity up to 8 ppt. As this is an endangered subspecies shared by Mexico and the U.S., the conservation of the delta ecosystem should be the interest of both countries, especially when management decisions upstream in the U.S. have an impact over natural areas downstream in Mexico.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Biology, Ecology.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College; Renewable Natural Resources
Degree Grantor:
University of Arizona
Advisor:
Shaw, William W.; DeStefano, Stephen

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleAbundance, distribution, and habitat use of Yuma clapper rails (Rallus longirostris yumanensis) in the Colorado River Delta,Mexicoen_US
dc.creatorHinojosa Huerta, Osuel Marioen_US
dc.contributor.authorHinojosa Huerta, Osuel Marioen_US
dc.date.issued2000en_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 conducted call-response surveys for Yuma clapper rails in the Colorado River delta, Mexico during the breeding seasons of 1999 and 2000 to estimate abundance, determine distribution, and identify patterns of habitat use. The maximum estimate of abundance was 6,629 individuals (95% C.I. 4,859 to 8,399). Rails were widely distributed in the delta, occupying almost all marshlands dominated by cattail. Rail density was higher in the Cienega de Santa Clara than in the other wetlands of the delta. High densities of clapper rails were associated with increased water depth, high cattail coverage, high vegetation coverage, low saltcedar coverage, proximity to shoreline, and increased salinity up to 8 ppt. As this is an endangered subspecies shared by Mexico and the U.S., the conservation of the delta ecosystem should be the interest of both countries, especially when management decisions upstream in the U.S. have an impact over natural areas downstream in Mexico.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectBiology, Ecology.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineRenewable Natural Resourcesen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorShaw, William W.en_US
dc.contributor.advisorDeStefano, Stephenen_US
dc.identifier.proquest1403177en_US
dc.identifier.bibrecord.b41394227en_US
All Items in UA Campus Repository are protected by copyright, with all rights reserved, unless otherwise indicated.