ISSN:
1573-5117
Keywords:
polyhumic
;
physico-chemical limnology
;
phytoflagellate ecology
;
forest lakes
;
gilvin
;
underwater light
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Lake Chisholm is a polyhumic, warm monomictic forest lake in western Tasmania. Its large relative depth and sheltering forest result in nine months stratification. The high humic content is a dominant feature, producing a sharp, shallow thermocline, a shallow euphotic depth (〈 1 m) and an underwater light climate dominated by red wavelenghts. The hypolimnion is anoxic and sulphide-laden and even in winter circulation is sluggish. For much of the year the lake resembles a biogenically meromictic lake, and though there is only slight chemical enrichment of the hypolimnion there is nonetheless considerable vertical structure in the water column. Chromophyte flagellates are the dominant algae, a few species often forming monospecific blooms in a sporadic manner. Lake Chisholm is seen as an oceanic, mid-latitude counterpoint to dimictic, polyhumic, flagellate haunts in Scandinavia.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00044100
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