NSIS Volume 41- Part 4
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Item Open Access Table of contents (v. 41, p. 4)(2001) Nova Scotian Institute of ScienceItem Open Access Front matter(2001) Nova Scotian Institute of ScienceItem Open Access Balance Sheet (vol. 41, p.4)(2001) Nova Scotian Institute of ScienceItem Open Access Proceedings 1998-1999(2001) Nova Scotian Institute of ScienceItem Open Access President report 1997-2000(2001) Nova Scotian Institute of ScienceItem Open Access Obituaries(2001)Item Open Access Overwintering leibunum elgams (opiliones:phalangiidae) in caves and mines in Nova Scotia(2001) Moseley, M.; Hebda, A.The opilionid Leiobunum elegans was found overwintering in caves and mines in mainland Nova Scotia and Cape Breton Island. It occurred both as adults and near-adults. usually as single individuals or small clusters, but aggregations were formed at one site. It is suggested that aggregation formation is a behavioural adaptation for coping with saturated atmospheres. This is the first published report of overwintering opilionids in such habitats from eastern Canada.Item Open Access Short communications. Baccharis: A genus of the asteraceae new to Canada(2001) Fielding, Raymond RThis note reports lhe occurrence of GROUNDSEL-TREE or sea-myrtle. Baccharis halimifolia L. on islands at the mouth of Tusket river(43°46'N, 65° 55 'W). thus adding a new genus to the flora of Canada.Item Open Access Some aspects of the ecology and physiology of fungi isolated predominently from the wood of trees of the northern temperate forest(2001) McAfee, Brenda Jane, 1954-About 3800 cultures of fungi held in five collections in North America and one in Russia have been selected and reviewed on the basis of their woody substrates, and when these substrates were trees, the geography other isolations. Fifty eight tree genera were recorded as substrates, but only 17 of these, commonly used for timber, were responsible for 10 or more isolations of fungi. The cultures were collected in 29 countries of which 21 were in the Northern Hemisphere north of latitude 45°. The production of wood-grading enzymes by 69 of these fungal genera is reviewed as is their ability to produce colored or potentially colored metabolites. Work on the possible use of endophytic fungi as control agents against the invasion of wood by pathogens is summarized. This data and the physiological chemistry supporting it is supported by 408 references to the original literature.Item Open Access Geochemical Evidence for the Recent Changes in a Salt Marsh, Chezzetcook Inlet, Nova Scotia, Canada(2001) Chague-Gofp, Catherine; Hamilton, Tark S.; Scott, David BSediment cores were collected from the salt marsh located in the West Head of Chezzetcook Inlet, and analyzed to determine the recent changes in geochemistry as a result of both natural and anthropogenic influence. ^137 Cs dating was used to determine the accretion rates and shows that the sedimentation rates have been slightly higher in the high marsh than in the middle marsh for the last 30 years, probably as a result of increased terrestrial sediment influx. Elemental distribution is mainly related to mineral matter abundance and variety (e.g. mica, halite), However, elevated concentrations of Fe, Ni, Co, Mo and As near the surface of the marsh sequence at the landward edge of the marsh is attributed to anthropogenic input related to the recent road construction, while an elemental enrichment at about 1 m depth is attributed to diagenetic processes, which have resulted in elemental precipitation as sulfides at the boundary between the oxidized and reduced sediment layer.Item Open Access Goat Lake, a warm water, estuarine refugia for molluscs on the south shore of Nova Scotia(2001) Spares, Aaron D.; Dadswell, Michael J.Goat Lake is a tidal, silled, 11.5 m deep lake-like estuary situated off Mahone Bay on the Atlantic coast of Nova Scotia. The lake is flushed for 2 hand 21 min during an average high tide. and requires between 8 and 32.4 days for complete exchange depending on stratification conditions. Salinity at depths below 3 m average 28 °/°°. A 0.5-1 m surface layer of brackish water in combination with the limited flushing led to periods of anoxia in water deeper than 5 m. Maximum surface temperature was 25.1°C during the summer and average summer surface temperature was 2.8°C above adjacent Mahone Bay. Goat lake has reproducing populations of the ribbed mussel, Geukensia demissa and American oyster, Crassostrea virginica which rarely occur along the south shore of Nova Scotia. Unique marine ecosystems, such as Goat Lake, should be surveyed and some possibly placed on the list of protected, natural heritage sites in the province of Nova Scotia.