Get reliable rangeland science

AN ANALYSIS OF BEAKED SEDGE (CAREX UTRICULATA) STUBBLE HEIGHT AND RECOVERY FOLLOWING HERBIVORY IN NORTHEASTERN ARIZONA
Author
Noelle, Sarah
Ruyle, George B.
Crigler, Wink
Publisher
Society for Range Management
Publication Year
2015
Body

Beaked sedge (Carex utriculata) is a dominant species within montane riparian meadow communities in northern Arizona and is utilized by both livestock and wild ungulates throughout the growing season. In order to determine the effects of grazing on beaked sedge, we examined grazed and ungrazed stubble height data of beaked sedge from 2 riparian meadow pastures in northeastern Arizona between 2009 and 2014. Measurements were taken prior to, during, and following livestock grazing and throughout the growing season (in ungrazed sites) during years of complete rest. Average stubble heights in both grazed pastures remained greater than the minimum residual heights often suggested in riparian grazing management guidelines. However, both grazed and ungrazed sedge heights were below those now being required for the newly endangered New Mexico meadow jumping mouse. Average stubble heights in non-use years were also at or below recommended average heights, indicating use of riparian areas by wild ungulates. However, percent of plants grazed in all years was generally below 50% indicating utilization levels within those recommended for streamside vegetation. Our data highlight 3 major findings: 1. It is important when, where and how sedge heights are measured in terms of meeting suggested guidelines; 2. Sedges grazed early to mid-growing season will significantly recover height; and 3. Wild ungulate use may impact meeting any stubble height guidelines in these riparian areas. If stubble heights are used in the grazing management of riparian meadows, we recommend establishing permanent sampling locations, consistent timing of measurement, and identification of key species. We show that managed livestock grazing in riparian meadows can meet reasonable average stubble height guidelines when grazed by mid-growing season.

Language
English
Resource Type
Text
Document Type
Conference Proceedings
Conference Name
SRM Sacramento, CA
Collection
SRM Annual Meeting Abstracts