scholarly journals Harpalejeunea molleri subsp. integra (R.M. Schuster) Damsholt new to Atlantic Canada

2020 ◽  
Vol 133 (3) ◽  
pp. 199-205
Author(s):  
Sean R. Haughian ◽  
Thomas H. Neily
Keyword(s):  
Nova Scotia ◽  
Light Microscopy ◽  
New Brunswick ◽  
North American ◽  
Atlantic Canada ◽  
Thuja Occidentalis ◽  
White Cedar ◽  
Eastern White Cedar ◽  
Reference Specimens ◽  
First Time

Harpalejeunea molleri subsp. integra (R.M. Schuster) Damsholt is reported for the first time in Atlantic Canada. It was found on the base of a large Eastern White Cedar (Thuja occidentalis) in a swamp in Nova Scotia. The specimen was examined using light microscopy, diagnosed using standard keys, and compared with reference specimens, including two European collections from the New Brunswick Museum, two North American collections annotated by R.M. Schuster, and the only material that may have been previously collected in Canada, by T. Drummond. We speculate on the original location of Drummond’s collection, and the implications of this finding for conservation.

New records of Melyridae (Coleoptera) from the Maritime Provinces of Canada

2005 ◽  
Vol 137 (3) ◽  
pp. 325-327 ◽  
Author(s):  
Christopher G. Majka
Keyword(s):  
Nova Scotia ◽  
New Brunswick ◽  
North American ◽  
New Records ◽  
Atlantic Canada ◽  
Maritime Provinces ◽  
The North ◽  
The World

The Melyridae (soft-winged flower beetles) are a diverse, abundant, and widespread family of beetles found throughout the world, with more than 300 genera and 6000 species worldwide (Mayor 2002). Melyrids are particularly abundant in dry, temperate regions of the world. Mayor's (2002) synopsis of the North American fauna includes 58 genera and 520 species. Bright (1991) tabulates 49 species in 14 genera in the Canadian fauna. Only one species, the introduced Palearctic Malachius aeneus (L.), was reported for Atlantic Canada, with records in New Brunswick, Nova Scotia, and Newfoundland.

Evidence of high self-fertilization in natural populations of eastern white cedar (Thuja occidentalis)

1990 ◽  
Vol 68 (3) ◽  
pp. 663-668 ◽  
Author(s):  
Daniel J. Perry ◽  
Peggy Knowles
Keyword(s):  
Natural Populations ◽  
Outcrossing Rate ◽  
Significant Heterogeneity ◽  
Embryo Survival ◽  
Thuja Occidentalis ◽  
White Cedar ◽  
Northwestern Ontario ◽  
Outcrossing Rates ◽  
Self Fertilization ◽  
Eastern White Cedar

Arrays of open-pollinated seeds were assayed for allozyme polymorphisms at four loci (Mdh-1, Me, 6Pg-2, and Pgm) to obtain estimates of outcrossing rates for three eastern white cedar populations in northwestern Ontario, Canada. Multilocus population outcrossing rate estimates were low, ranging from 0.507 to 0.745, with significant heterogeneity among populations. Low stand densities and relatively high selfed embryo survival may have contributed to the low effective outcrossing rates observed. Single-tree multilocus outcrossing rate estimates were obtained for nine trees from one population. When estimated jointly with outcross pollen pool allele frequencies, these outcrossing rate estimates ranged from 0.253 to 1.023 with significant heterogeneity among trees. Key words: mating system, outcrossing rate, Thuja occidentalis L.

Patterns of Architectural Variation in Thuja occidentalis L. (Eastern White Cedar) from Upland and Lowland Sites

1991 ◽  
Vol 152 (4) ◽  
pp. 494-499 ◽  
Author(s):  
Christopher H. Briand ◽  
Usher Posluszny ◽  
Douglas W. Larson ◽  
Uta Matthes-Sears
Keyword(s):  
Thuja Occidentalis ◽  
White Cedar ◽  
Eastern White Cedar

Lacconotus punctatus and the family Mycteridae (Coleoptera) newly recorded in Atlantic Canada

2006 ◽  
Vol 138 (5) ◽  
pp. 636-637 ◽  
Author(s):  
Christopher G. Majka ◽  
Gary Selig
Keyword(s):  
Nova Scotia ◽  
First Record ◽  
Saproxylic Beetles ◽  
Atlantic Canada ◽  
The Family ◽  
First Time ◽  
Developing Knowledge

AbstractLacconotus punctatus LeConte is reported for the first time from Atlantic Canada from a specimen collected in Bridgewater, Nova Scotia. This is the first record of the family Mycteridae in the region. The bionomics and systematics of the species are briefly discussed. The report is also situated in the context of the developing knowledge of saproxylic beetles in the region.

Concentration of highway deicing agents along roadsides near London

1978 ◽  
Vol 56 (8) ◽  
pp. 1081-1085 ◽  
Author(s):  
A. C. Foster ◽  
M. A. Maun
Keyword(s):  
Filter Paper ◽  
Strong Correlation ◽  
Soil Samples ◽  
Freezing Rain ◽  
Thuja Occidentalis ◽  
White Cedar ◽  
The Road ◽  
Eastern White Cedar ◽  
Snow Storms ◽  
Deicing Agents

Analysis of snow and soil samples showed that the concentrations of Na and Cl were higher near the road and decreased with increasing distance from the pavement. The level of calcium in soil did not change with distance. The concentration of calcium in the foliage of eastern white cedar trees (Thuja occidentalis L.) facing the highway was not significantly different from the concentration in the foliage on the opposite side. The filter paper discs attached to the foliage accumulated significantly high amounts of salts on days with freezing rain or snow storms. A strong correlation was found between element levels in the foliage and the levels found in filter paper discs.

Prize and Prejudice

1997 ◽  
Author(s):  
Faye Margaret Kert
Keyword(s):  
Nineteenth Century ◽  
Nova Scotia ◽  
North America ◽  
New Brunswick ◽  
Economic Impact ◽  
War Of 1812 ◽  
Atlantic Canada ◽  
Legal Evolution ◽  
Negative Reputation

This journal examines privateering and naval prizes in Atlantic Canada in the maritime War of 1812 - considered the final major international manifestation of the practice. It seeks to contextualise the role of privateering in the nineteenth century; determine the causes of, and reactions to, the War of 1812; determine the legal evolution of prize law in North America; discuss the privateers of Nova Scotia and New Brunswick, and the methods they utilised to manipulate the rules of prize making during the war; and consider the economic impact of the war of maritime communities. Ultimately, the purpose of the journal is to examine privateering as an occupation in order to redeem its historically negative reputation. The volume is presented as six chapters, plus a conclusion appraising privateering, and seven appendices containing court details, prize listings, and relevant letters of agency.

Comparative seed morphology of Thuja occidentalis (eastern white cedar) from upland and lowland sites

1992 ◽  
Vol 70 (2) ◽  
pp. 434-438 ◽  
Author(s):  
Christopher H. Briand ◽  
Usher Posluszny ◽  
Douglas W. Larson
Keyword(s):  
Significant Variation ◽  
Morphological Characters ◽  
Seed Morphology ◽  
Right Wing ◽  
Habitat Types ◽  
Thuja Occidentalis ◽  
White Cedar ◽  
Character Variation ◽  
Eastern White Cedar ◽  
Individual Trees

As part of an investigation of the extent of habitat-specific variation in Thuja occidentalis L., cones were collected from cliff (dry upland) and swamp (wet lowland) sites in southern Ontario. The number of seeds per cone, number of fully developed seeds per cone, seed fresh weight, length, and width, length and width of embryo area, and length and width of right wing were determined. Seed yield on a per cone basis did not vary between habitat types or among sites within habitats. There was, however, significant variation among trees within sites. Individual seed characters did not vary between habitat types, but significant variation existed among sites within habitats, among trees within sites, and among cones within trees. Only the width of right wing failed to show cone to cone variation within individual trees. The majority of explainable variance for all characters could be apportioned to trees within sites. This and a relatively low degree of cone to cone variation suggest that the seed morphological characters were under strong maternal control. Differences among sites are thought to be the result of local environmental variation rather than genetic differences. The lack of habitat-specific seed character variation indicates that contrasting moisture regimes have little effect on quantitative seed morphology. No evidence exists for ecotypic variation with respect to seed morphology. Key words: Thuja occidentalis, eastern white cedar, seed morphology, ecotypes, cliff, swamp.

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