Biogeomorphic Relationships and Riparian Vegetation Changes Along Altered Ephemeral Stream Channels: Florence to Marana, Arizona

Abeer Hamdan, Soe Myint

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

This study examines riparian vegetation cover changes along ephemeral channels due to the emplacement of the Central Arizona Project (CAP) canal. Two research questions examined are the following: (1) How has riparian vegetation changed over the course of twenty-eight years due to altered flow conditions? (2) How has channel morphology affected changes in vegetation cover? Five Landsat TM images acquired in 1982, 1989, 1996, 2003, and 2010 were classified. The average change of vegetation cover per 0.5-km section over the twenty-eight-year period is approximately 100,436 m2 over 25.5-km length of the canal on the upstream section. In addition, the total amount of vegetation cover increase in the twenty-eight years over the 25.5-km length of the canal is approximately 5,122,239 m2. Larger streams experienced a greater increase in vegetation cover upslope than smaller streams. In addition, streams of similar width dimensions that were completely closed off resulted in greater vegetation cover than streams that were semiconnected. A significant relationship between changes in vegetation green-up and channel widths was examined. Results from this study suggest that there is a quasi-linear relationship between channel widths and increases in vegetation cover for altered and impounded channels due to the presence of the CAP canal.

Original languageEnglish (US)
Pages (from-to)26-38
Number of pages13
JournalProfessional Geographer
Volume68
Issue number1
DOIs
StatePublished - Jan 2 2016

Fingerprint

ephemeral stream
riparian vegetation
stream channel
vegetation cover
canal
channel morphology
Landsat thematic mapper
emplacement
vegetation

Keywords

  • CAP canal
  • ephemeral streams
  • geomorphology
  • riparian vegetation

ASJC Scopus subject areas

  • Geography, Planning and Development
  • Earth-Surface Processes

Cite this

Biogeomorphic Relationships and Riparian Vegetation Changes Along Altered Ephemeral Stream Channels : Florence to Marana, Arizona. / Hamdan, Abeer; Myint, Soe.

In: Professional Geographer, Vol. 68, No. 1, 02.01.2016, p. 26-38.

Research output: Contribution to journalArticle

@article{48887f036b744bb4a572276c4dea098b,
title = "Biogeomorphic Relationships and Riparian Vegetation Changes Along Altered Ephemeral Stream Channels: Florence to Marana, Arizona",
abstract = "This study examines riparian vegetation cover changes along ephemeral channels due to the emplacement of the Central Arizona Project (CAP) canal. Two research questions examined are the following: (1) How has riparian vegetation changed over the course of twenty-eight years due to altered flow conditions? (2) How has channel morphology affected changes in vegetation cover? Five Landsat TM images acquired in 1982, 1989, 1996, 2003, and 2010 were classified. The average change of vegetation cover per 0.5-km section over the twenty-eight-year period is approximately 100,436 m2 over 25.5-km length of the canal on the upstream section. In addition, the total amount of vegetation cover increase in the twenty-eight years over the 25.5-km length of the canal is approximately 5,122,239 m2. Larger streams experienced a greater increase in vegetation cover upslope than smaller streams. In addition, streams of similar width dimensions that were completely closed off resulted in greater vegetation cover than streams that were semiconnected. A significant relationship between changes in vegetation green-up and channel widths was examined. Results from this study suggest that there is a quasi-linear relationship between channel widths and increases in vegetation cover for altered and impounded channels due to the presence of the CAP canal.",
keywords = "CAP canal, ephemeral streams, geomorphology, riparian vegetation",
author = "Abeer Hamdan and Soe Myint",
year = "2016",
month = "1",
day = "2",
doi = "10.1080/00330124.2015.1007431",
language = "English (US)",
volume = "68",
pages = "26--38",
journal = "Professional Geographer",
issn = "0033-0124",
publisher = "Taylor and Francis Ltd.",
number = "1",

}

TY - JOUR

T1 - Biogeomorphic Relationships and Riparian Vegetation Changes Along Altered Ephemeral Stream Channels

T2 - Florence to Marana, Arizona

AU - Hamdan, Abeer

AU - Myint, Soe

PY - 2016/1/2

Y1 - 2016/1/2

N2 - This study examines riparian vegetation cover changes along ephemeral channels due to the emplacement of the Central Arizona Project (CAP) canal. Two research questions examined are the following: (1) How has riparian vegetation changed over the course of twenty-eight years due to altered flow conditions? (2) How has channel morphology affected changes in vegetation cover? Five Landsat TM images acquired in 1982, 1989, 1996, 2003, and 2010 were classified. The average change of vegetation cover per 0.5-km section over the twenty-eight-year period is approximately 100,436 m2 over 25.5-km length of the canal on the upstream section. In addition, the total amount of vegetation cover increase in the twenty-eight years over the 25.5-km length of the canal is approximately 5,122,239 m2. Larger streams experienced a greater increase in vegetation cover upslope than smaller streams. In addition, streams of similar width dimensions that were completely closed off resulted in greater vegetation cover than streams that were semiconnected. A significant relationship between changes in vegetation green-up and channel widths was examined. Results from this study suggest that there is a quasi-linear relationship between channel widths and increases in vegetation cover for altered and impounded channels due to the presence of the CAP canal.

AB - This study examines riparian vegetation cover changes along ephemeral channels due to the emplacement of the Central Arizona Project (CAP) canal. Two research questions examined are the following: (1) How has riparian vegetation changed over the course of twenty-eight years due to altered flow conditions? (2) How has channel morphology affected changes in vegetation cover? Five Landsat TM images acquired in 1982, 1989, 1996, 2003, and 2010 were classified. The average change of vegetation cover per 0.5-km section over the twenty-eight-year period is approximately 100,436 m2 over 25.5-km length of the canal on the upstream section. In addition, the total amount of vegetation cover increase in the twenty-eight years over the 25.5-km length of the canal is approximately 5,122,239 m2. Larger streams experienced a greater increase in vegetation cover upslope than smaller streams. In addition, streams of similar width dimensions that were completely closed off resulted in greater vegetation cover than streams that were semiconnected. A significant relationship between changes in vegetation green-up and channel widths was examined. Results from this study suggest that there is a quasi-linear relationship between channel widths and increases in vegetation cover for altered and impounded channels due to the presence of the CAP canal.

KW - CAP canal

KW - ephemeral streams

KW - geomorphology

KW - riparian vegetation

UR - http://www.scopus.com/inward/record.url?scp=84949627479&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84949627479&partnerID=8YFLogxK

U2 - 10.1080/00330124.2015.1007431

DO - 10.1080/00330124.2015.1007431

M3 - Article

AN - SCOPUS:84949627479

VL - 68

SP - 26

EP - 38

JO - Professional Geographer

JF - Professional Geographer

SN - 0033-0124

IS - 1

ER -