scholarly journals Electrical conductivity mechanism of sericite schist from Gold Lake area of the Yellowknife mining district, Northwest Territories

2002 ◽  
Author(s):  
S Connell ◽  
N Scromeda-Perez
Keyword(s):  
Electrical Conductivity ◽  
Northwest Territories ◽  
Mining District ◽  
Lake Area ◽  
Conductivity Mechanism

scholarly journals Additions to the Flora of the Continental Northwest Territories from the Great Slave Lake Area

2005 ◽  
Vol 119 (3) ◽  
pp. 437
Author(s):  
Paul M. Catling
Keyword(s):  
Northwest Territories ◽  
Native Species ◽  
Achillea Millefolium ◽  
Lake Area ◽  
Distinctive Features ◽  
Botanical Exploration ◽  
Galium Aparine ◽  
Great Slave Lake ◽  
Sonchus Arvensis ◽  
Eleven Species

Eleven species are reported as new to the flora of the continental Northwest Territories. The new native species include Artemesia dracunculus, Chenopodium leptophyllum, Eleocharis erythropoda, Panicum capillare, Schoenoplectus pungens and Symphyotrichum lanceolatum subsp. hesperium var. hesperium. New alien species reported include Achillea ptarmica, Chaenorhinum minus, Galium aparine, Malva neglecta and Silene cserei. Sonchus arvensis, previously reported, is based on material referable to a subsp. uliginosus. Forms new to the flora include Achillea millefolium f. rosea and Actaea rubra f. neglecta. Locations, habitats and distinctive features are provided for the additional taxa. The Hay River lowland ecoregion is a floristically rich area that deserves more botanical exploration. Erratum included.

Fish diversity and biomass in northern Canadian lakes: northern lakes are more diverse and have greater biomass than expected based on species–energy theory

2015 ◽  
Vol 72 (2) ◽  
pp. 226-237 ◽  
Author(s):  
Pasan Samarasin ◽  
Charles K. Minns ◽  
Brian J. Shuter ◽  
William M. Tonn ◽  
Michael D. Rennie
Keyword(s):  
Climate Change ◽  
Species Richness ◽  
Lake Trout ◽  
Fish Diversity ◽  
Mining District ◽  
Lake Area ◽  
Resource Exploitation ◽  
Diamond Mining ◽  
Significant Difference ◽  
Total Fish

Biodiversity in northern Canada (north of 60°N latitude) is threatened, primarily by increasing resource exploitation and by climate change. Unfortunately, we have relatively limited knowledge of aquatic biodiversity for this region, making it difficult to develop suitable policies to manage these threats. Here we describe, quantify, and test hypotheses related to fish biodiversity and biomass in 37 lakes in a diamond mining district (the Barrenlands) in the Northwest Territories, Canada (64°N, 110°W). To estimate species richness and biomass of fish, we took advantage of exhaustive sampling and monitoring surveys conducted in the region and compared our northern estimates against estimates from southern Canadian lakes. We found that most of the 37 northern lakes contained two to four species, with the largest lake containing eight species. Salmonids dominated this system, with lake trout (Salvelinus namaycush) being the dominant species in abundance and biomass. Comparative analysis with similar-sized southern Canadian lakes showed no significant difference in the slopes of species richness versus lake area curves. Surprisingly, total fish biomass distributions for northern, Barrenlands lakes were also similar to southern, Ontario lakes. Overall, our results suggest that Barrenlands lakes are important natural resources of Canada that should be conserved for the future. Under anticipated scenarios of climate change, these lakes may represent important refugia for coldwater fishes (e.g., lake trout) as habitats at the southern edges of their ranges become more limiting.

Study of LiMgVO4 electrical conductivity mechanism

2010 ◽  
Vol 489 (2) ◽  
pp. 714-718 ◽  
Author(s):  
C. Paraskeva ◽  
A. Kazakopoulos ◽  
K. Chrissafis ◽  
O. Kalogirou
Keyword(s):  
Electrical Conductivity ◽  
Conductivity Mechanism
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