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Local topography is more important than climate as a determinant of regional alpine plant diversity in southwestern British ColumbiaBaldwin-Corriveau, Katharine 04 September 2012 (has links)
Mountain ecosystems are considered highly sensitive to the impacts of climate change,
and are experiencing a magnitude of change that far exceeds global averages, particularly
with respect to increases in average temperature and precipitation. As such, scientists are
predicting a rapid habitat reduction or even the loss of the coolest climatic alpine zones,
thus threatening the continued survival of high elevation specialists. However, many of
these ‘doomsday’ predictions are based primarily on models with coarse-resolution
changes to atmospheric climate parameters, and do not take into account the potential
buffering effects of other environmental gradients known to structure alpine plant
communities, related to topography and soils. To assess the accuracy of predictions
regarding the state of vulnerability of alpine plant communities to climate change, this
thesis examined the relative importance of climate, topography and soils as determinants
of regional alpine plant diversity for all species, as well as for forbs, graminoids and
woody species separately, in alpine meadows of southwestern British Columbia. Through
redundancy analyses and variation partitioning, results show that topography and soils are
more important than climate as determinants of regional alpine plant diversity. Within
these groups, elevation, slope, soil moisture and mean summer temperature were most
significant. Interestingly, precipitation played only a small role, even though the study
area spanned a precipitation gradient of over 1200 mm/year. The stronger influence of
temperature, especially for woody species beta diversity, supports findings of shrub
expansion in arctic-alpine systems. The lower importance of climate as a determinant of
regional alpine plant diversity, especially for forbs, the dominant life form in alpine
meadow ecosystems, suggests that these productive environments may be more resilient
to on-going changes in atmospheric climate conditions than previously believed. / Graduate
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An ecological study of the cerrado vegetation of South-Central Brazil /Goodland, Robert J. A., 1939- January 1969 (has links)
No description available.
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Assessing post-fire reseeding potential using Bureau of Land Management criteria in northeastern Nevada a spatial modeling approach /Weigel, Timothy J. January 2007 (has links)
Thesis (M.S.)--University of Nevada, Reno, 2007. / "August, 2007." Includes bibliographical references. Online version available on the World Wide Web.
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Vegetation dynamics of the Menindee Lakes with reference to the seed bank /Nicol, Jason . January 2004 (has links) (PDF)
Thesis (Ph.D.) -- University of Adelaide, School of Earth and Environmental Sciences, Discipline of Environmental Biology, 2004. / "August 2004" Includes bibliography. Also available electronically.
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Vegetation dynamics of the Menindee Lakes with reference to the seed bankNicol, Jason . January 2004 (has links)
Thesis (Ph.D.) -- University of Adelaide, School of Earth and Environmental Sciences, Discipline of Environmental Biology, 2004. / "August 2004" Includes bibliographical references. Also available in print.
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Support host selection of Lonicera japonica and its interaction with different environmental and biotic factors in Cameron Park, Waco, TexasGao, Song, Bratton, Susan. January 2008 (has links)
Thesis (M.S.)--Baylor University, 2008. / Includes bibliographical references (p. 103-107).
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Effects of abiotic factors and cattle grazing on gypsum outcrop plant communities in the Cimarron Gypsum Hills, northwestern Oklahoma /Rice, Kristi Dawn. January 2008 (has links) (PDF)
Thesis (M.S.), Biology--University of Central Oklahoma, 2008. / Includes bibliographical references (leaves 98-104).
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A landscape-scale analysis of vegetation recovery at Mount St. Helens /Lawrence, Rick L. January 1900 (has links)
Thesis (Ph. D.)--Oregon State University, 1998. / Typescript (photocopy). Includes bibliographical references. Also available on the World Wide Web.
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Investigation on selected biotic and abiotic factors in the maintenance of the "fairy circles" (barren patches) of southern AfricaJoubert, Angelique. January 2008 (has links)
Thesis (M.Sc.)(Plant Science))--University of Pretoria, 2008. / Includes bibliographical references.
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Developments of roots and shoots of certain deciduous tree seedlings in different forest sitesHolch, Arthur Everett, January 1931 (has links)
Thesis (Ph. D.)--University of Nebraska, 1930. / Cover title. "Reprinted from Ecology, vol. XII, no. 2., April, 1931." "Literature cited": p. 297-298.
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