NSIS Volume 36 - Part 3/4

Table of contents (v. 36, p. 3/4)

2012-09-11T13:56:08Z

Table of contents (v. 36, p. 3/4) Nova Scotian Institute of Science

Proceedings of Meetings, Session of 1985-86, including President's report

2012-08-14T19:45:39Z

Proceedings of Meetings, Session of 1985-86, including President's report Nova Scotian Institute of Science

The concept of the perilimnion

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The concept of the perilimnion Ogden, James Gordon, III.; Nova Scotian Institute of Science Seasonal variations in surface and ground water supply and increasing attention to ionic and mass balances in aquatic eco-systems require more specific definitions of hydrologic parameters to recognize sources and sinks for biologically significant geochemistry. The term "Perilimnion" is proposed to define that zone of the catchment in which groundwater developed by surface runoff and percolation may enter (or leave) the limnic environment. The perilimnion, therefore, is an aquifer, whose geochemistry may affect, or be affected by, the waters of a lake. The term "Tardelimnion" is proposed to define that portion of the limnicenvironment in which deposition of limnogenic sediments (autochthonous or allochthonous) contribute to an aquitard, whose low coefficient of hydraulic permeability (<10-6 cm-1) virtually precludes significant hydrologic or geochemical interaction between lake and ground waters. Includes b&w illus.; bibliographic references

Pannaria lurida in Atlantic Canada

2012-08-17T18:22:38Z

Pannaria lurida in Atlantic Canada Maass, W. S. G.; Hoisington, B. L.; Harries, H.; Nova Scotian Institute of Science The cyanophilic lichen Pannaria lurida has been collected from seventeen localities in southern Nova Scotia and two in southern New Brunswick. Previous reports of this lichen from Quebec are based on ill-identified or doubtful materials. Includes b&w photographs; b&w maps; bibliographic references