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The Relative Effects of Grazing By B...

Tastad, Adrienne C.

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The Relative Effects of Grazing By Bison and Cattle on Plant Community Heterogeneity In Northern Mixed Prairie.

Record Type:	Electronic resources : Monograph/item
Title/Author:	The Relative Effects of Grazing By Bison and Cattle on Plant Community Heterogeneity In Northern Mixed Prairie./
Author:	Tastad, Adrienne C.
Description:	131 p.
Notes:	Source: Masters Abstracts International, Volume: 52-05.
Contained By:	Masters Abstracts International52-05(E).
Subject:	Agriculture, Range Management. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MS26282
ISBN:	9780499262820

The Relative Effects of Grazing By Bison and Cattle on Plant Community Heterogeneity In Northern Mixed Prairie.
Tastad, Adrienne C.

The Relative Effects of Grazing By Bison and Cattle on Plant Community Heterogeneity In Northern Mixed Prairie. - 131 p.

Source: Masters Abstracts International, Volume: 52-05.

Thesis (M.N.R.M.)--University of Manitoba (Canada), 2014.

Since northern mixed prairies evolved under the influence of bison, grazing may be an important process maintaining diversity in these ecosystems. However, it is unclear whether grazing by cattle has the same ecological consequences as grazing by bison. I surveyed plant communities that were grazed at a range of intensities by bison or cattle, or were mechanically mowed. I used generalized linear mixed models and geostatistical techniques to evaluate the effects of grazing intensity and species of grazer on structural and floristic responses, and analysis of variance to evaluate the effects of mowing. I found that both grazing and mowing increased diversity and reduced evenness of the plant community. Spatial patterns of grazing were similar for bison and cattle, although bison created more discrete patches at the highest intensities of grazing. My results suggest that despite some differences in their selective preferences, the two species may have similar ecological effects.

ISBN: 9780499262820Subjects--Topical Terms:

1022885
Agriculture, Range Management.

The Relative Effects of Grazing By Bison and Cattle on Plant Community Heterogeneity In Northern Mixed Prairie.
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100 1 $a Tastad, Adrienne C. $3 3168881
245 1 4 $a The Relative Effects of Grazing By Bison and Cattle on Plant Community Heterogeneity In Northern Mixed Prairie.
300 $a 131 p.
500 $a Source: Masters Abstracts International, Volume: 52-05.
502 $a Thesis (M.N.R.M.)--University of Manitoba (Canada), 2014.
520 $a Since northern mixed prairies evolved under the influence of bison, grazing may be an important process maintaining diversity in these ecosystems. However, it is unclear whether grazing by cattle has the same ecological consequences as grazing by bison. I surveyed plant communities that were grazed at a range of intensities by bison or cattle, or were mechanically mowed. I used generalized linear mixed models and geostatistical techniques to evaluate the effects of grazing intensity and species of grazer on structural and floristic responses, and analysis of variance to evaluate the effects of mowing. I found that both grazing and mowing increased diversity and reduced evenness of the plant community. Spatial patterns of grazing were similar for bison and cattle, although bison created more discrete patches at the highest intensities of grazing. My results suggest that despite some differences in their selective preferences, the two species may have similar ecological effects.
590 $a School code: 0303.
650 4 $a Agriculture, Range Management. $3 1022885
650 4 $a Biology, Ecology. $3 1017726
690 $a 0777
690 $a 0329
710 2 $a University of Manitoba (Canada). $b Natural Resources Management. $3 2097120
773 0 $t Masters Abstracts International $g 52-05(E).
790 $a 0303
791 $a M.N.R.M.
792 $a 2014
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MS26282