scholarly journals A New Record Size Wolf, Canis lupus, Group for Ontario

2006 ◽  
Vol 120 (3) ◽  
pp. 367 ◽  
Author(s):  
Liv S. Vors ◽  
Philip L. Wilson
Keyword(s):  
Canis Lupus ◽  
New Record ◽  
Alces Alces ◽  
Lake Area ◽  
Record Keeping ◽  
Large Group ◽  
Red Lake ◽  
Northwestern Ontario

This report documents a group of 19 Wolves (Canis lupus) in northwestern Ontario. This is the largest group observed since record keeping in the Moose Aerial Inventory commenced in 1995. This large group may be a response to a high Moose (Alces alces) population in the Red Lake area.

ARCHAEAN SEDIMENTARY ROCKS OF NORTH SPIRIT LAKE AREA, NORTHWESTERN ONTARIO

1965 ◽  
Vol 2 (6) ◽  
pp. 622-647 ◽  
Author(s):  
J. A. Donaldson ◽  
G. D. Jackson
Keyword(s):  
Volcanic Rocks ◽  
Sedimentary Rocks ◽  
Sole Source ◽  
Lake Area ◽  
Red Lake ◽  
Sedimentary Sequences ◽  
The North ◽  
Northwestern Ontario ◽  
History Of ◽  
Granitoid Rocks

Archaean sedimentary rocks of the North Spirit Lake area show little evidence of having been derived predominantly from associated Archaean volcanic rocks. Instead, compositions of the sediments reflect significant sedimentary and (or) granitoid provenance. A remarkably high content of clastic quartz in thick units of sandstone and conglomerate suggests either reworking of older quartzose sediments, or reduction of the labile constituents in quartz-rich granitoid rocks through prolonged weathering and rigorous transport. Observations for other sedimentary sequences in the region between Red Lake and Lansdowne House suggest that the North Spirit sediments are not unique in the Superior Province. Quartzose sandstones commonly are regarded as atypical of the Archaean, but such rocks arc abundant in northwestern Ontario. Frameworks of many Archaean greywackes actually are richer in quartz than typical greywackes from numerous Proterozoic and Phanerozoic sequences.The concept of rapidly rising volcanic arcs as the sole source of Archaean sedimentary detritus is rejected for the North Spirit area. The volcanies, rather than representing relicts of protocontinents, probably record events removed from initial volcanism in the history of the earth by one or more orogenic cycles. Major unconformities may therefore exist not only between sedimentary and volcanic units, but also between these units and older granitoid rocks.

scholarly journals Extension of the Known Range of the Gray Treefrog, Hyla versicolor, in Northwestern Ontario

2009 ◽  
Vol 123 (4) ◽  
pp. 372
Author(s):  
Wayne F. Weller
Keyword(s):  
Hyla Versicolor ◽  
Lake Area ◽  
Red Lake ◽  
Northwestern Ontario ◽  
Gray Treefrog ◽  
The Town

I present the first documented records of Gray Treefrog, Hyla versicolor, from the Red Lake area of Kenora District in northwestern Ontario. A photograph of H. versicolor was taken at a locality west-northwest of the town of Red Lake in 2007 and another east of Red Lake in 2009. H. versicolor choruses were heard at 11 localities east and southeast of Red Lake in June 2008, and were tape recorded at 5. These seven documented records are 46-56 km north-northwest of the previous most northern voucher, west of the town of Ear Falls, and they represent the most northern locations known for H. versicolor in Ontario.

A detailed gravity profile across the English River Subprovince, northwestern Ontario

1984 ◽  
Vol 21 (2) ◽  
pp. 145-151 ◽  
Author(s):  
V. K. Gupta ◽  
R. B. Barlow
Keyword(s):  
Seismic Data ◽  
Bouguer Anomaly ◽  
Density Data ◽  
Density Measurements ◽  
Anomaly Field ◽  
Red Lake ◽  
Northwestern Ontario ◽  
Crustal Model ◽  
Regional Gravity ◽  
Gravity Profile

This paper presents the results of a detailed gravity profile measured across the two lithotectonic domains of the English River Subprovince from Vermilion Bay to Red Lake, a distance of 190 km, in northwestern Ontario. Along the profile 283 fresh rock samples were collected for density measurements. The density data clearly suggest that there is a measurable and significant density difference between the migmatized metasediments and plutonic rocks.A crustal model based on the seismic data, along the profile, has been used for computing a regional gravity field, which in turn has been used in isolating the residual anomalies from the Bouguer anomaly field. A strong correlation has been found to exist between the residual anomalies, the rock densities, and the surface lithologies. The Northern Supracrustal Domain, which is at its widest (60 km) along the profile, is dominated by a pronounced 15 mGal (150 μm s−2) positive residual anomaly believed to be caused by outcropping, anomalously dense metasediments extending to a modelled depth of approximately 10 km. In the Southern Plutonic Domain the residual anomalies along the profile are small (less than 5 mGal (50 μm s−2)) and limited in depth. The Mystery Lake dome extends to a modelled depth of approximately 2.5 km.

Age Relationships of Intrusive Rocks and Ore Deposits in the Red Lake Area, Ontario

1943 ◽  
Vol 51 (1) ◽  
pp. 17-32 ◽  
Author(s):  
H. C. Horwood ◽  
N. B. Keevil
Keyword(s):  
Ore Deposits ◽  
Lake Area ◽  
Red Lake ◽  
Intrusive Rocks

scholarly journals Age Structure of Moose (Alces alces) Killed by Gray Wolves (Canis lupus) in Northeastern Minnesota, 1967–2011

2013 ◽  
Vol 127 (1) ◽  
pp. 70 ◽  
Author(s):  
L. David Mech ◽  
Michael E. Nelson
Keyword(s):  
National Parks ◽  
Age Structure ◽  
Canis Lupus ◽  
Alces Alces ◽  
Gray Wolves

The ages of 77 adult Moose (Alces alces) killed by Gray Wolves (Canis lupus) during the period 1967–2011 in northeastern Minnesota were significantly older than those of a sample of 17,585 Moose killed by hunters in nearby Ontario. Our findings support those of earlier studies of protected Moose populations in national parks that found that Gray Wolves tend to kill disproportionately more older Moose.

Moose (Alces alces) calf survival rates in the presence of wolves (Canis lupus) in southeast Norway

2012 ◽  
Vol 58 (5) ◽  
pp. 863-868 ◽  
Author(s):  
Therese Ramberg Sivertsen ◽  
Atle Mysterud ◽  
Hege Gundersen
Keyword(s):  
Canis Lupus ◽  
Alces Alces ◽  
Survival Rates ◽  
Calf Survival

Effects of Experimental and Cultural Lake Acidification on Littoral Benthic Macroinvertebrate Assemblages

1994 ◽  
Vol 51 (5) ◽  
pp. 1147-1161 ◽  
Author(s):  
Malcolm Stephenson ◽  
Gregory Mierle ◽  
Ronald A. Reid ◽  
Gerald L. Mackie
Keyword(s):  
Correlation Matrix ◽  
Environmental Variables ◽  
Benthic Macroinvertebrate ◽  
Lake Area ◽  
Experimental Lakes Area ◽  
Simple Method ◽  
Northwestern Ontario ◽  
Kendall’S Τ ◽  
Dimension 2 ◽  
Sweep Net

A simple method for the assessment of littoral benthic macroinvertebrate (BMI) assemblages in lakes was developed at the Experimental Lakes Area (ELA) in northwestern Ontario and applied to 64 lakes in central Ontario. The presence (1) or absence (0) of BMI taxa was established at five sites on each lake, using a kick-and-sweep net technique. Summing presence/absence scores across sites ranked the importance of each taxon in each lake on a scale of 0 to 5. Relationships between the BMI assemblages were assessed using nonmetric multidimensional scaling (NMDS), based upon the Kendall's τ correlation matrix. Correlations between NMDS dimension 1 and 2 scores and environmental variables identified factors that may structure BMI assemblages. The BMI assemblages of three experimentally acidified and seven reference lakes at the ELA were correlated strongly with lake pH. The BMI assemblage structure of central Ontario lakes was predicted by lake area and sensitivity to acidification (NMDS dimension 1) and by lake elevation (NMDS dimension 2). The BMI assemblages of small or Ca-poor and acidic lakes include fewer oligochaetes, mayflies, and Cryptochironomus and Stictochironomus (chironomids) and more Odonata, Trichoptera, Chironomus, Conchapelopia, Microtendipes, and Procladius (chironomids), and Crangonyx (Amphipoda) than other central Ontario lakes.

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