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Grass invasion causes rapid increases in ecosystem carbon and nitrogen storage in a semiarid shrubland
Article first published online: 22 JUN 2009
DOI: 10.1111/j.1365-2486.2009.02001.x
© 2009 Blackwell Publishing Ltd
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How to Cite
WOLKOVICH, E. M., LIPSON, D. A., VIRGINIA, R. A., COTTINGHAM, K. L. and BOLGER, D. T. (2010), Grass invasion causes rapid increases in ecosystem carbon and nitrogen storage in a semiarid shrubland. Global Change Biology, 16: 1351–1365. doi: 10.1111/j.1365-2486.2009.02001.x
Publication History
- Issue published online: 22 FEB 2010
- Article first published online: 22 JUN 2009
- Received 30 March 2009 and accepted 19 May 2009
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Table S1. Estimates of total dry litter (g) added per 9 m2 (per plot) to addition treatment plots, to species. We performed the initial, large litter manipulation after the growing season ended in June 2005, and repeated it in late May?June 2006, though lower precipitation that year led to lower amounts of litter manipulated. In 2005 to bring pre-manipulation plots of low and high invasion levels to the same amount of litter (twice the naturally high abundance) we added twice as much litter to low invasion areas as to high invasion areas.
Table S2. One-way anova results for comparisons of High Invasion ? Control to High Invasion ? Removal Control show that effects of removal were not due to artifacts (trampling etc.) of manipulation. Litter N results are for Treatment main effect of a GLM that also included ?months in field.?
Table S3. Mean (?SE when available) values of g C m?2 aboveground, in soil and respired in other grassland and shrubland systems. For the cheatgrass invasion we converted soil %C values using a bulk density of 1.5 obtained for nearby study site (Jungo, NV, (United States Department of Agriculture: Natural Resource Conservation Service 2008)).
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