Distribution and Peculiarity of Mediterranean Ecosystems

  • Homer Aschmann
Part of the Ecological Studies book series (ECOLSTUD, volume 7)


The lands of mediterranean scrub or chaparral climate and the ecosystems that have developed in them must be defined in climatic terms. If we attempt to focus on the characteristic core of a mediterranean scrub or chaparral climate three terms stand out, two involving precipitation and one temperature. The most distinctive term involves the concentration of rainfall in the winter half year, November through April in the northern hemisphere and May through October in the southern. Although at a large number of stations, especially in California and Chile, 80 or even 90% of the precipitation occurs in winter, so large a proportion rarely obtains around the Mediterranean Basin itself. The value of at least sixty five percent of the year’s precipitation occurring in the winter half year seems, on the basis of examining a considerable number of station records, to form a satisfactory boundary. Winter rainfall, because of lower evaporation, is more effective in sustaining plant growth than is warm season precipitation; nonetheless, in this climatic region all but favorably located phreatophytic vegetation is subject to drought stress in summer.


Assure Cyclone Eucalyptus Cali Eurasia 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Ackerman, E. A.: The Köppen Classification of Climates in North America. Geographical Review 31, 105–111 (1941).CrossRefGoogle Scholar
  2. Axelrod, D. I.: A Method for Determining the Altitudes of Tertiary Floras. The Paleobotanist 14, 144–171 (1966).Google Scholar
  3. Bailey, H. P.: A Simple Moisture Index Based upon a Primary Law of Evaporation. Geografiska Annaler 40, 196–215 (1958).CrossRefGoogle Scholar
  4. Bailey, H. P.: The Mean Annual Range and Standard Deviation as Measures of Dispersion of Temperature around the Annual Mean. Geografiska Annaler 48A, 183–194 (1966).CrossRefGoogle Scholar
  5. James, P. E.: A Geography of Man. Boston: Ginn. 1951.Google Scholar
  6. Köppen, W., Geiger, R.: Handbuch der Klimatologie, Band 1, Teil C, C 42–43. Berlin: Gebrüder Bornträger 1936.Google Scholar

Copyright information

© Springer-Verlag Berlin · Heidelberg 1973

Authors and Affiliations

  • Homer Aschmann

There are no affiliations available

Personalised recommendations