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J. Range Manage. 51:514-518 September 1998
 

Summary: J. Range Manage.
51:514-518 September 1998
Detecting channel morphology change in California's hard-
wood rangeland spring ecosystems
BARBARA ALLEN-DIAZ, BANDALL D. JACKSON, JEFFREY S. J?EHML
Authors are associate professor and graduate student researchers, Dept. ESPM-ES, 151 Hilgard Hall #3110, University of California, Berkeley,
Cal$94720. Authors e-mail address is: ballen@nature.berkeley.edu
Abstract
Permanent channel cross-sectional transects perpendicular
to flow were used to estimate changes in spring and resultant
creek channel morphology. Three cattle grazing treatments
(none, light, and moderate) were applied to 2-5 ha pastures
containing a perennial spring and resultant creek cohort for 5
years. Grazing effects on the total change in channel mor-
phology were not detected, nor did our method detect channel
morphology change over the 5 year study period. Ungrazed
springs and creeks were observed to change more than
grazed springs and creeks although these differences were not
statistically significant. Observed, but not significant, change
over time appears related to rainfall patterns. Permanent

  

Source: Allen-Diaz, Barbara - Department of Environmental Science Policy and Management, University of California at Berkeley
Fehmi, Jeffrey S. - School of Natural Resources and the Environment, University of Arizona

 

Collections: Environmental Sciences and Ecology