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By Don A. Cowan

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Published by means of the yank Geophysical Union as a part of the Antarctic learn Series.

These thirteen unique papers on terrestrial organic study start up a significant other to Biology of the Antarctic Seas, which now includes 4 volumes of the Antarctic study sequence. The articles during this quantity variety in subject material from the limnology, body structure, and ecology of aquatic structures to the taxonomy of fresh-water algae, lichens, mosses, fungi, protozoa, and land arthropods of Antarctica. It concludes accurately, and for purposes said lower than, with a paper on subantarctic rain forests.

This terrestrial quantity brings jointly study papers which are much less appropriate for book lower than present Antarctic study sequence volumes and, hence, finds one other measurement of the U.S. attempt in antarctic organic study. even if the amount comprises systematic and ecologic papers, the longer reviews aspect to alterations within the layout and final touch of box organic paintings. those alterations are exemplified by means of larger use of more and more subtle instrumentation and through emphasis on in situ experimental experiences. This transition begun as early as 1961-1962 while Goldman, Mason, and wooden, and likewise Koob and Leister, all started their box paintings. to a point, the explanation and technique of those teams encouraged the 1970 stories by way of Parker and his affiliates. a lot of organic examine includes graduate learn assistants, and 7 of those papers symbolize, partially or in entire, their contributions provided in partial achievement of necessities for greater levels.


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5 ' ••--• ' o' ' ' ' ' ' ' ' ' HOURS summer. The intensity and the pattern of photosynFig. 39. Diel changesin productivity of Skua and Algal thesisvaried during the seasons for both the standing lakes measured in situ on (a) December 4-5 and (b) cropand the light regime(Figures39-43) [Goldman December 12-13, 1961. , 1963, Figure 1]. In general,as light increased short-wave) for each period of incubation is also plotted. Copyright American Geophysical Union Antarctic Research Series Antarctic Terrestrial Biology 32 ANTARCTIC Vol.

F %e• •ø• ø ,;, HzSO • per liter Fig. 27. Buffer curvesdeterminedjust before (January 22) and just after (January 24) the onset of freezing of Skua Lake in 1962 (open circles represent Skua Lake on January 22, 1962; open squares,Skua Lake on January 24, 1962; and solid circles, Pony Lake on January 24, 1962). The curve for Pony Lake on Cape Royds is included for comparison. Copyright American Geophysical Union Antarctic Research Series 22 Antarctic Terrestrial Biology ANTARCTIC Vol. 0 mg level observedat Skua Lake.

Royds,on January24 were between5 and 10 times It is interestingto speculateon the origin of this thoseat SkuaLakeon the samedate. The smallpond material. Obviouslythe materialin Pony Lake must north of Pony Lake was so rich in nitrate that not originatein large part from the penguinrookery; evena twentyfolddilutionwith distilledwaterbrought however,the organicnitrogen concentration in this the concentration down to a measurable level. We lake is only about twice the ammonianitrogenconestimatethat it contained>3 mg 1-• of nitratenitro- centration,whereasthe organic nitrogen concentragen.

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