Elevated air temperatures in riparian ecosystems along ephemeral streams: The role of housing density

J. Martin, S. A. Kurc, G. Zaimes, M. Crimmins, A. Hutmacher, Douglas Green

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The semiarid southwestern United States is an area of rapid population growth. Urban development is encroaching upon many ecosystems, including riparian areas. Because most stream miles in the southwestern United States occur along ephemeral streams, recognizing how these ecosystems are affected by increasing urban land covers is imperative. In this study, we recorded air temperature at 30 cm above the ground surface within riparian ecosystems along nine ephemeral stream reaches in three levels of housing density: High Density (HD: >13 houses/hectare); Moderate Density (MD: 4-8 houses/hectare); Low Density (LD: <1 house/hectare) for two years in a rapidly growing city in southern Arizona. Annual and seasonal average diurnal 30-min air temperatures for each treatment show that HD air temperatures were consistently higher than LD and MD temperatures (~0.5-1.5 °C) during the late-evening/early-morning and midday hours. Winter temperatures had the largest differences between HD and LD sites, as much as 1.4 °C. Because physiological activity in these riparian ecosystems is largely temperature-dependent, temperature shifts associated with increased housing density could result in major ecosystem changes in these semiarid areas.

Original languageEnglish (US)
Pages (from-to)9-18
Number of pages10
JournalJournal of Arid Environments
Volume84
DOIs
StatePublished - Sep 2012

Fingerprint

ephemeral streams
ephemeral stream
air temperature
ecosystems
ecosystem
Southwestern United States
temperature
urban development
riparian areas
land cover
population growth
housing density
winter

Keywords

  • Daily maximum temperature
  • Daily minimum temperature
  • Diurnal temperature
  • Semiarid
  • Urban heat island
  • Urbanization

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Earth-Surface Processes
  • Ecology

Cite this

Elevated air temperatures in riparian ecosystems along ephemeral streams : The role of housing density. / Martin, J.; Kurc, S. A.; Zaimes, G.; Crimmins, M.; Hutmacher, A.; Green, Douglas.

In: Journal of Arid Environments, Vol. 84, 09.2012, p. 9-18.

Research output: Contribution to journalArticle

Martin, J. ; Kurc, S. A. ; Zaimes, G. ; Crimmins, M. ; Hutmacher, A. ; Green, Douglas. / Elevated air temperatures in riparian ecosystems along ephemeral streams : The role of housing density. In: Journal of Arid Environments. 2012 ; Vol. 84. pp. 9-18.
@article{6e2eff44fa4246baa8b9dbd429bd665f,
title = "Elevated air temperatures in riparian ecosystems along ephemeral streams: The role of housing density",
abstract = "The semiarid southwestern United States is an area of rapid population growth. Urban development is encroaching upon many ecosystems, including riparian areas. Because most stream miles in the southwestern United States occur along ephemeral streams, recognizing how these ecosystems are affected by increasing urban land covers is imperative. In this study, we recorded air temperature at 30 cm above the ground surface within riparian ecosystems along nine ephemeral stream reaches in three levels of housing density: High Density (HD: >13 houses/hectare); Moderate Density (MD: 4-8 houses/hectare); Low Density (LD: <1 house/hectare) for two years in a rapidly growing city in southern Arizona. Annual and seasonal average diurnal 30-min air temperatures for each treatment show that HD air temperatures were consistently higher than LD and MD temperatures (~0.5-1.5 °C) during the late-evening/early-morning and midday hours. Winter temperatures had the largest differences between HD and LD sites, as much as 1.4 °C. Because physiological activity in these riparian ecosystems is largely temperature-dependent, temperature shifts associated with increased housing density could result in major ecosystem changes in these semiarid areas.",
keywords = "Daily maximum temperature, Daily minimum temperature, Diurnal temperature, Semiarid, Urban heat island, Urbanization",
author = "J. Martin and Kurc, {S. A.} and G. Zaimes and M. Crimmins and A. Hutmacher and Douglas Green",
year = "2012",
month = "9",
doi = "10.1016/j.jaridenv.2012.03.019",
language = "English (US)",
volume = "84",
pages = "9--18",
journal = "Journal of Arid Environments",
issn = "0140-1963",
publisher = "Academic Press Inc.",

}

TY - JOUR

T1 - Elevated air temperatures in riparian ecosystems along ephemeral streams

T2 - The role of housing density

AU - Martin, J.

AU - Kurc, S. A.

AU - Zaimes, G.

AU - Crimmins, M.

AU - Hutmacher, A.

AU - Green, Douglas

PY - 2012/9

Y1 - 2012/9

N2 - The semiarid southwestern United States is an area of rapid population growth. Urban development is encroaching upon many ecosystems, including riparian areas. Because most stream miles in the southwestern United States occur along ephemeral streams, recognizing how these ecosystems are affected by increasing urban land covers is imperative. In this study, we recorded air temperature at 30 cm above the ground surface within riparian ecosystems along nine ephemeral stream reaches in three levels of housing density: High Density (HD: >13 houses/hectare); Moderate Density (MD: 4-8 houses/hectare); Low Density (LD: <1 house/hectare) for two years in a rapidly growing city in southern Arizona. Annual and seasonal average diurnal 30-min air temperatures for each treatment show that HD air temperatures were consistently higher than LD and MD temperatures (~0.5-1.5 °C) during the late-evening/early-morning and midday hours. Winter temperatures had the largest differences between HD and LD sites, as much as 1.4 °C. Because physiological activity in these riparian ecosystems is largely temperature-dependent, temperature shifts associated with increased housing density could result in major ecosystem changes in these semiarid areas.

AB - The semiarid southwestern United States is an area of rapid population growth. Urban development is encroaching upon many ecosystems, including riparian areas. Because most stream miles in the southwestern United States occur along ephemeral streams, recognizing how these ecosystems are affected by increasing urban land covers is imperative. In this study, we recorded air temperature at 30 cm above the ground surface within riparian ecosystems along nine ephemeral stream reaches in three levels of housing density: High Density (HD: >13 houses/hectare); Moderate Density (MD: 4-8 houses/hectare); Low Density (LD: <1 house/hectare) for two years in a rapidly growing city in southern Arizona. Annual and seasonal average diurnal 30-min air temperatures for each treatment show that HD air temperatures were consistently higher than LD and MD temperatures (~0.5-1.5 °C) during the late-evening/early-morning and midday hours. Winter temperatures had the largest differences between HD and LD sites, as much as 1.4 °C. Because physiological activity in these riparian ecosystems is largely temperature-dependent, temperature shifts associated with increased housing density could result in major ecosystem changes in these semiarid areas.

KW - Daily maximum temperature

KW - Daily minimum temperature

KW - Diurnal temperature

KW - Semiarid

KW - Urban heat island

KW - Urbanization

UR - http://www.scopus.com/inward/record.url?scp=84860653136&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84860653136&partnerID=8YFLogxK

U2 - 10.1016/j.jaridenv.2012.03.019

DO - 10.1016/j.jaridenv.2012.03.019

M3 - Article

AN - SCOPUS:84860653136

VL - 84

SP - 9

EP - 18

JO - Journal of Arid Environments

JF - Journal of Arid Environments

SN - 0140-1963

ER -