more on Antartica

Susan B. Farmer sfarmer at GOLDSWORD.COM
Thu Jan 11 09:16:48 CST 2001


>From Dr. Weinstein

>
>Further to my recent message regarding vascular plants in Antarctica, a
>few extra details:
>
>Alex Buchanan was correct in stating that there are only two native
>vascular plants in Antarctica (Deschampsia antarctica and Colobanthus
>quitensis).  Each occurs on the western coastal area of the Antarctic
>Pennisula (which has a more moderate "maritime" Antarctic climate as
>opposed to the eastern portion of the Pennisula, which has a more severe
>"continental" climate), and each has a southernmost range of approximately
>68 degrees south - just to south of the British research station at
>Rothera.
>
>Again, all portions of Antarctica aside from the western portion of the
>pennisula are regarded as having a severe "continental" climate, and no
>vascular plants occur there although there are about 25 mosses and about
>100 species of lichen.  Turning north again, the island of South Georgia,
>where the Trifolium hybridum was found, is situated at 54 degrees latitude
>south and has a comparatively mild "sub-antarctic" climate.  South Georgia
>is positively lush compared to the maritime and continental Antarctic
>climatic zones; the island supports about 25-30 (native) vascular plants.
>
>Thanks for listening; maybe I'll subscribe one of these days....
>
>Rick
>
>****************************************
>Richard Weinstein Ph.D.
>Instructor
>Department of Botany
>University of Tennessee
>Knoxville, TN 37996-1100
>e-mail: rweinste at utk.edu
>
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