February 28, 2007
GCRIO Program Overview
Our extensive collection of documents.
Archives of the
Global Climate Change Digest
A Guide to Information on Greenhouse Gases and Ozone Depletion
Published July 1988 through June 1999
FROM VOLUME 5, NUMBER 8, AUGUST 1992
CLIMATE CHANGE IMPACTS: FORESTS AND GRASSLANDS
"Impacts of Annual Weather Conditions on Forest Productivity--A Case
Study Involving Four North American Deciduous Tree Species," D.D. Reed
(Sch. For., Michigan Tech. Univ., Houghton MI 49931), E.A. Jones et al., Intl.
J. Biometeor., 36(1), 51-57, Mar. 1992.
Studies at two intensively managed sites in northern Michigan show that
responses to changes in temperature and moisture depend on the species and on
site conditions. Projected climate changes may have dramatic effects on the
productivity of at least some commercially important tree species in the
"Forest Response to Climatic Change: Effects of Parameter Estimation
and Choice of Weather Patterns on the Reliability of Projections," D.B.
Botkin (Dept. Biol. Sci., Univ. California, Santa Barbara CA 93106), R.A.
Nisbet, Clim. Change, 20(2), 87-111, Feb. 1992.
Sensitivity analyses show that projections of forest response will generally
be insensitive to errors of 10% in parameter estimation, and relatively
insensitive to the choice of baseline weather records.
"Boreal Forest Sensitivity to Global Warming: Implications for
Forest Management in Western Interior Canada," T. Singh (Northern For.
Ctr., Edmonton, Alberta, Can.), E.E. Wheaton, For. Chronicle, 67(4),
342-348, Aug. 1991.
Increases of 3° -7° C projected for Alberta under a doubled CO2
scenario have many short- and long-term implications for forest management and
for industries. Since the boreal forest is very sensitive to climatic changes,
foresters need to develop a set of safe strategies to minimize the negative
impacts and maximize the benefits of these changes.
"Potential Impacts of Climate Change on Patterns of Production and
the Role of Drainage in Grassland," A.C. Armstrong (Field Drainage Exper.
Unit, Agric. Devel. & Advis. Serv., Anstey Hall, Maris Lane, Cambridge CB2
2LF, UK), D.A. Castle, Grass & Forage Sci., 47(1), 50-61,
Results from a grass production model show that patterns in the U.K. could
be shifted significantly under an elevated CO2 climate. Greater grass growth in
spring due to warmer temperature, and depressed growth in mid-season due to
moisture deficit would be most noticeable on drained land. Under a changed
climate, the drainage of grassland together with sound management to optimize
output would be important.
"An Initial Approach to Predicting the Sensitivity of the South
African Grassland Biome to Climate Change," W.N. Ellery (Dep. Bot., Univ.
Witwatersrand, Priv. Bag 3, Witwatersrand 2050, S. Africa), R.J. Scholes, M.T.
Mentis, S. African J. Sci., 87(10), 499-503, 1991.
Defines three climatic indices by which the grassland biome in South Africa
can be distinguished from neighboring biomes. They also provide a simple method
of predicting possible vegetation responses to climatic change. The approach,
demonstrated with a specific climate change scenario, has several advantages,
although it fails to identify rates or pathways of change or species involved.
"Soil Water Retention after Natural and Simulated Rainfall on a
Temperate Grassland," J.M. Welker (Merlewood Res. Sta., Inst. Terr. Ecol.,
Grange Sands LA11 6JU, Cumbria, UK), S. McClelland, T. Weaver, Theor. Appl.
Clim., 44(3-4), 229-237, 1991.
Examines temporal characteristics of soil water retention on experimental
plots following natural and simulated summer showers. If a changed climate
alters rainfall amounts of summer showers in the U.S. Northern Great Plains,
soil water retention and associated ecosystem processes may be significantly
altered in Agropyron smithii (Rybd.) grasslands.
Guide to Publishers
Index of Abbreviations