You are not currently logged in.
Access your personal account or get JSTOR access through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
The River as a Factor of Plant Distribution
Journal of Ecology
Vol. 21, No. 2 (Aug., 1933), pp. 436-441
Published by: British Ecological Society
Stable URL: http://www.jstor.org/stable/2256591
Page Count: 6
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
The vegetation in river valleys of the eastern part of the Eurasian continent displays a great and constant difference between the inundated and non-inundated parts of the valley. There are many species growing only in the parts of the valleys inundated in spring or, on the other hand, only in the non-inundated parts; thus we have two primary zones or belts quite distinct in their vegetation and not coinciding with river terraces nor with soil belts. In the same manner the vegetation of the "second sandy terrace" of the left bank is also quite distinct. And there are parallel species replacing one another in the several belts and zones just as there are in the several plant associations--"ecological series" of species. In different latitudes and climates plants change their habitats, and this change compensates for the lack of physiological adaptability, which is not so great as is generally supposed. In the same locality species and communities of more northern or more southern type exist side by side, ranging from desert vegetation to that of the northern swamps or tundra, each with its characteristic species, microclimate, soil conditions and even landscape.
Journal of Ecology © 1933 British Ecological Society