Growth of the Avalon Peninsula, Newfoundland Caribou Herd

1983 ◽  
Vol 47 (4) ◽  
pp. 989 ◽  
Author(s):  
A. T. Bergerud ◽  
Michael J. Nolan ◽  
K. Curnew ◽  
W. Eugene Mercer
Keyword(s):  
Avalon Peninsula

A Eulerian Explosive Cyclogenesis climatology from the ERA5 reanalysis, 1979-2018

2020 ◽  
Author(s):  
Thomas Cropper ◽  
Stephanie Allen
Keyword(s):  
Tropical Cyclones ◽  
North Atlantic ◽  
Weather Forecasting ◽  
Southern Oscillation ◽  
Medium Range ◽  
Potential Applications ◽  
Hemisphere Winter ◽  
Avalon Peninsula ◽  
Resolution Data ◽  
Northern Hemisphere Winter

<p>Using the criterion of one Bergeron (24 hPa change over 24 h at 60°), we present the creation of a Eulerian explosive cyclogenesis climatology using hourly-temporal resolution data from the European Centre for Medium Range Weather Forecasting’s ERA5 reanalysis (1979-2018). This approach differs to the typically used Lagrangian methodologies adopted by many studies. The climatology created by this approach results in similar patterns to previous studies.</p><p>Assessments on the dataset are undertaken to analyse the influence of seasonality, teleconnections, climate change and individual events (the method picks up tropical cyclones as well as mid-latitude storms). The location experiencing the most consistent explosive cyclongenesis conditions (15% of the time during the Northern Hemisphere winter) is to the east of the Avalon Peninsula, Newfoundland. The preferred location of explosive cyclogenesis is shown to change in relation to patterns such as the El Niño Southern Oscillation and North Atlantic Oscillation. Potential applications of the dataset are suggested.</p><p>                                                </p>

Some mosquitoes and blackflies from Newfoundland

1970 ◽  
Vol 48 (4) ◽  
pp. 621-624 ◽  
Author(s):  
J. R. Pickavance ◽  
G. F. Bennett ◽  
J. Phipps
Keyword(s):  
New Records ◽  
Preliminary Survey ◽  
Avalon Peninsula

A preliminary survey was made of the Culicidae and Simuliidae of the Avalon Peninsula, Newfoundland. Ten mosquitoes in the genera Wyeomyia, Culiseta, and Aedes, and 10 blackflies in the genera Prosimulium, Cnephia, and Simulium were found. Five of the mosquitoes and six of the blackflies are new records for Newfoundland.

Spatial distribution patterns of larval cytotypes of the Simulium venustum/verecundum complex (Diptera: Simuliidae) on the Avalon Peninsula, Newfoundland: factors associated with cytotype abundance and composition

1992 ◽  
Vol 70 (7) ◽  
pp. 1389-1396 ◽  
Author(s):  
J. W. McCreadie ◽  
M. H. Colbo
Keyword(s):  
Drainage Basin ◽  
Principal Component ◽  
Distribution Patterns ◽  
Restricted Gene Flow ◽  
Regression Analyses ◽  
Factors Associated ◽  
Sampling Protocols ◽  
Stream Size ◽  
Avalon Peninsula ◽  
Qualitative Changes

Using principal component analysis and cluster and regression analyses, larval macrodistribution of Simulium venustum/verecundum complex cytotypes within a drainage basin and along a stream continuum was investigated. Cytotypes included ACD (= Simulium rostratum Lundström) and AA from the verecundum line of the complex and EFG/C (= Simulium truncatum Lundström), AC(gb) and CC2-3 (combined CC2 and CC3) from the venustum line. Abundance of both AC(gb) and CC2-3 increased with increasing stream size. The abundance of CC2-3 also increased at sites with warmer temperatures and lower conductivity, dissolved oxygen, and pH levels. Cytotype composition changed in a continuous, directional, and predictable (R2 = 52.4–92.2%) manner with increased distance from outlets. It is argued that changes in cytotype composition must be considered in future sampling protocols, as quantitative and qualitative changes in the cytotype assemblage can occur over distances as short as 100 m. Discontinuity in the frequency of the IIL-4 polymorphism suggested restricted gene flow due to limited adult AA dispersal over distances greater than 12 km.

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