Ansul, Incorporated (1994) ‘Material safety data sheet: Silv-Ex foam 
     concentrate.’ Ansul Fire Protection, Marinette, Wisconsin.

Billings, W.D. (1993) Bromus tectorum, a biotic cause of ecosystem 
     impoverishment in the Great Basin. In ‘The earth in transition: patterns 
     and processes of biotic impoverishment’. (Ed. GM Woodwell) pp. 301-322. 
     (Cambridge University Press: New York)

Bonham, C.D. (1989) ‘Measurements for terrestrial vegetation.’ (John Wiley and 
     Sons: New York)

Daubenmire, R. (1978) ‘Plant geography.’ (Academic Press: New York)

Diggle, P.J., K.Y. Liang, S.L. Zeger (1994) ‘Analysis of longitudinal data.’ 
     (Oxford University Press: Oxford)

Gaikowski, M.P., S.J. Hamilton, K.J. Buhl, S.F. McDonald, C.H. Summers (1996) 
     Acute toxicity of three fire-retardant and two fire-suppressant foam 
     formulations to the early life stages of rainbow trout (Oncorhynchus 
     mykiss). Environmental Toxicology and Chemistry 15, 1365-1374.

Gauch, H.G. (1982) ‘Multivariate analysis in community ecology.’ (Cambridge 
     University Press: Cambridge)

Gittins, R. (1985) ‘Canonical analysis: a review with applications in ecology.’ 
     (Springer-Verlag: Berlin)

Green, R.H. (1979) ‘Sampling design and statistical methods for environmental 
     biologists.’ (John Wiley and Sons: New York)

Guth, A.R., S.B. Cohen (1989) ‘Red skies of ‘88: the 1988 forest fire season in 
     the Northern Rockies, the Northern Great Plains and the Greater Yellowstone 
     Area.’ (Pictorial Histories Publishing Company: Missoula, MT)

Harniss, R.O., R.B. Murray (1973) 30 years of vegetal change following burning of 
     sagebrush-grass range. Journal of Range Management 26, 322-325.

Hickman, J.C. (1993) ‘The Jepson manual: higher plants of California.’ 
     (University of California Press: Berkeley, CA)

James, D.W., J.J. Jurinak (1979) Nitrogen fertilization of dominant plants in 
     the northeastern Great Basin desert. In ‘Nitrogen in desert ecosystems’. 
     (Eds NE West and J Skujins) pp. 219-231. (Dowden, Hutchinson and Ross, Inc: 
     Stroudsburg, PA)

Jongman, R.H.G., C.J.F. ter Braak, O.F.R. Tongeren (1987) (Eds) ‘Data 
     analysis in community and landscape ecology’. (Centre for Agricultural 
     Publishing and Documentation: Wageningen, The Netherlands)

Kellner, O. (1993) Effects of nitrogen addition of the population dynamics and 
     flowering of Pulsatilla vernalis. Canadian Journal of Botany 71, 732-736.

Knapp, P.A. (1996) Cheatgrass (Bromus tectorum L.) dominance in the Great Basin 
     Desert: history, persistence, and influences to human activities. Global
     Environmental Change 6, 37-52.

Larson, J.R., D.A. Duncan (1982) Annual grassland response to fire retardant 
     and wildfire. Journal of Range Management 35, 700-703.

Larson, D.L., W.E. Newton (1996) Effects of fire retardant chemicals and fire 
     suppressant foam on vegetation in North Dakota prairie. Proceedings of 
     the North Dakota Academy of Science 50, 137-144.

Ludwig, J.A., J.F. Reynolds (1988) ‘Statistical ecology.’ (John Wiley and Sons: 
     New York)

Lyons, J.W. (1970) ‘The chemistry and uses of fire retardants.’ (Wiley 
     Interscience: New York)

Littell, R.C., G.A. Milliken, W.W. Stroup, R.D. Wolfinger (1996) ‘SAS system 
     for mixed models.’ (SAS Institute, Inc: Cary, NC)

McDonald, S.F., S.J. Hamilton, K.J. Buhl, J.F. Heisinger (1996) Acute toxicity 
     of fire control chemicals to Daphnia magna (Straus) and Selenastrum 
     capricornutum (Printz). Ecotoxicology and Environmental Safety 33, 62-72.

Milchunas, D.G., W.K. Lauenroth (1995) Inertia in plant community structure: 
     state changes after cessation of nutrient-enrichment stress. Ecological 
     Applications 5, 452-458.

Milliken, G.A., D.E. Johnson (1984) ‘Analysis of messy data: designed 
     experiments’. (Van Nostrand Reinhold: New York)

National Wildfire Coordinating Group, Fire Equipment Working Team (1991) ‘Field 
     quality control of fire retardant chemicals.’ National Fire Coordinating 
     Group, NFES #1245.

Pielou, E.C. (1984) ‘The interpretation of ecological data: a primer on 
     classification and ordination.’ (John Wiley and Sons: New York)

Pyne, S.J. (1984) ‘Introduction to wildland fire.’ (John Wiley and Sons, Inc: 
     New York)

SAS Institute, Inc. (1989) ‘SAS/STAT user’s guide, version 6, fourth edition, 
     volume 2.’ (SAS Institute, Inc: Cary, NC)

SAS Institute, Inc. (1997) ‘SAS/STAT software: changes and enhancements through 
     Release 6.12.’ (SAS Institute, Inc: Cary, NC)

Steele, R.G.D., J.H. Torrie (1980) ‘Principles and procedures of statistics: a 
     biometrical approach.’ 2nd edn (McGraw-Hill: New York)

Stein, S.J., P.W. Price, W.G. Abrahamson, C.F. Sacchi (1992) The effect of fire 
     on stimulating willow regrowth and subsequent attack by grasshoppers and 
     elk. Oikos 65, 190-196.

Tilman, D. (1987) Secondary succession and the pattern of plant dominance along 
     experimental nitrogen gradients. Ecological Monographs 57, 189-214.

Vinton, M.A., I.C. Burke (1995) Interactions between individual plant species 
     and soil nutrient status in shortgrass steppe. Ecology 76, 1116-1133.

Wedin, D.A., D. Tilman (1996) Influence of nitrogen loading and species 
     composition on the carbon balance of grasslands. Science 274, 
     1720-1723.

West, N.E. (1988) Intermountain deserts, shrub steppes, and woodlands. In 
     ‘North American terrestrial vegetation’. (Eds MG Barbour and WD Billings) 
     pp. 209-230. (Cambridge University Press: Cambridge)

Whisenant, S.G. (1990) Changing fire frequencies on Idaho’s Snake River Plains: 
     ecological and management implications. In ‘Proceedings - symposium on 
     cheatgrass invasion, shrub die-off, and other aspects of shrub biology and 
     management’. (Eds ED McArthur, EM Romney, SD Smith and PT Tueller). pp 
     4-10. US Department of Agriculture, General Technical Report INT 256, 
     Intermountain Research Station, U.S. Forest Service: Ogden, UT.

Wilson, S.D., J.M. Shay (1990) Competition, fire, and nutrients in a mixed-
     grass prairie. Ecology 71, 1959-1967.

Wikeem, B.M., R.F. Newman, A.L. Van Ryswyk (1993) Forage response to 
     N-fertilization, P-fertilization, and S-fertilization on clearcut 
     lodgepole pine sites. Journal of Range Management 46, 262-270.

Young, J.A., R.A. Evans (1974) Population dynamics of green rabbitbrush in 
     disturbed big sagebrush communities. Journal of Range Management 27, 
     127-132.

Young, J.A., R.A. Evans (1978) Population dynamics after wildfires in sagebrush 
     grasslands. Journal of Range Management 31, 283-289.