NOTE ON CLIMATIC TRENDS IN THE LOWER PEACE RIVER REGION OF NORTHERN ALBERTA

1960 ◽  
Vol 40 (1) ◽  
pp. 204-206 ◽  
Author(s):  
T. C. EDMONDS ◽  
C. H. ANDERSON
Keyword(s):  
Climatic Trends ◽  
Peace River ◽  
River Region ◽  
Northern Alberta

not available

STUDIES WITH FERTILIZED PASTURES ON A HEAVY TEXTURED SOIL IN NORTHERN ALBERTA

1961 ◽  
Vol 41 (2) ◽  
pp. 261-267 ◽  
Author(s):  
C. R. Elliott ◽  
C. H. Anderson ◽  
B. D. Owen
Keyword(s):  
Ammonium Nitrate ◽  
Carrying Capacity ◽  
Ammonium Phosphate ◽  
Red Fescue ◽  
Peace River ◽  
River Region ◽  
Northern Alberta

Yields of herbage, animal gains, carrying capacity and TDN production were determined for three pasture swards grown on a Grey Wooded soil (Albright-Hythe series) in the Peace River region of northern Alberta over the period 1953 to 1956 inclusive. Sheep were used as grazing units. Fertilizer treatments of nil, ammonium phosphate (11-48-0) at 300 pounds per acre and ammonium nitrate (33-0-0) at 100 pounds per acre were applied annually to pastures of creeping red fescue, creeping red fescue-alfalfa and bromegrass-alfalfa.Productivity obtained with unfertilized grass-legume mixtures was almost double that for unfertilized grass grown alone. Increased production attributable to alfalfa was also obtained, although to a lesser degree, where fertilizers were used. Pastures of creeping red fescue seeded alone and with alfalfa responded markedly to applications of nitrogen while responses to phosphorus were negligible. Conversely, bromegrass-alfalfa pastures responded strongly to applications of phosphorus and only slightly to nitrogen.

Effect of fall and spring seeding on canola productivity in the Peace River region of northern Alberta

2005 ◽  
Vol 85 (3) ◽  
pp. 641-644 ◽  
Author(s):  
John T O’Donovan ◽  
Jennifer Otani ◽  
George W Clayton ◽  
Yoong K Soon
Keyword(s):  
Seedling Emergence ◽  
Significant Risk ◽  
Canola Seed ◽  
Crop Failure ◽  
Peace River ◽  
Yield And Quality ◽  
Seeding Date ◽  
River Region ◽  
Plant Densities ◽  
Northern Alberta

The feasibility of dormant seeding canola in the fall in the Peace River region of northern Alberta was assessed. Results indicated that there is a significant risk of crop failure with fall seeding, mainly due to poor spring seedling emergence. Where a fall-seeded canola crop established, flowering and seed maturity occurred earlier even though plant densities were lower with fall compared with spring seeding, and seeding date had little or no effect on canola seed yield or quality. Tillage (minimum or zero) or nitrogen rate, source or placement had no consistent effects on canola productivity. Canola growers in the Peace River region are unlikely to achieve higher yield and quality by seeding canola in the fall. Key words: Dormant seeding, fertilizer rate, source and placement, minimum and zero tillage, polymer coated canola seed

CHARACTERISTICS OF FERA ELUVIATED GLEYSOLS DEVELOPED FROM ACID SHALES IN NORTHWESTERN ALBERTA

1971 ◽  
Vol 51 (1) ◽  
pp. 113-124 ◽  
Author(s):  
S. PAWLUK
Keyword(s):  
Iron Oxides ◽  
Groundwater Discharge ◽  
Genetic Origin ◽  
Parent Materials ◽  
High Acidity ◽  
Peace River ◽  
River Region ◽  
High Concentrations ◽  
Pedogenic Processes ◽  
Northern Alberta

Fera Eluviated Gleysols developed on highly acidic parent materials are commonly encountered on flat-lying landscapes in the Peace River region of northern Alberta. Characteristics of these soils suggest, a genetic origin, with processes similar to those encountered in Luvisols and Gleysols. Alternation between the two processes has resulted in the formation of a B horizon enriched with clays, principally from the overlying eluviated horizon, and hydrated iron oxides introduced, in part, through groundwater discharge. Goethite, maghemite, and lepidocrocite were identified in horizons containing high concentrations of secondary iron oxides. The unusually high acidity common to these soils is attributed to biogeochemical oxidation of pyrite in the oxidizing zone of the surface geological deposit, and not to pedogenic processes.

scholarly journals Butterflies of the Peace River Region of Alberta and British Columbia

Blue Jay ◽  
1994 ◽  
Vol 52 (2) ◽  
Author(s):  
Norbert G. Kondla ◽  
Edward M. Pike ◽  
Felix A. H. Sperling
Keyword(s):  
British Columbia ◽  
Peace River ◽  
River Region

Seasonal emergence patterns of Sitodiplosis mosellana (Diptera: Cecidomyiidae) in the Peace River region, Alberta, Canada

2021 ◽  
pp. 1-15
Author(s):  
Amanda Jorgensen ◽  
Maya L. Evenden ◽  
Owen Olfert ◽  
Jennifer Otani
Keyword(s):  
Adult Emergence ◽  
Geographic Region ◽  
Invasive Pest ◽  
Phenological Model ◽  
Sitodiplosis Mosellana ◽  
Peace River ◽  
Wheat Midge ◽  
Emergence Patterns ◽  
River Region ◽  
Accumulated Rainfall

Abstract Wheat midge, Sitodiplosis mosellana Géhin (Diptera: Cecidomyiidae), is an invasive pest of wheat, Triticum spp. (Poaceae), in North America and is found in all wheat-growing regions of the world. Wheat midge biology, particularly post-diapause emergence of adults, varies with geographic region. The biology of wheat midge has not previously been examined in the northernmost area of its range in Canada – the Peace River region of Alberta. Wheat midge adult emergence was compared in situ to two phenological models of wheat midge emergence developed in other geographic regions. In-field adult emergence did not match the published phenological models. In the Peace River region, adults emerged later than are predicted by both models and precision for both models was low. With the Saskatchewan model, accumulated rainfall that was more than 110 mm in May and early June delayed emergence, whereas accumulated rainfall that was less than 43 mm during that period caused earlier than predicted emergence. Multiple peaks of wheat midge emergence, up to 20 days apart, were observed at some sites, supporting the Jacquemin model depicting “waves” of emergence. Including differences in soil temperature accumulation related to precipitation and optimising the model temperature thresholds would improve accuracy of the current Canadian phenological model in the Peace River region.

B-COMPLEX VITAMIN SUPPLEMENTATION OF PIG RATIONS BASED ON BARLEY GROWN ON GREY WOODED SOILS

1962 ◽  
Vol 42 (2) ◽  
pp. 183-190 ◽  
Author(s):  
B. D. Owen ◽  
A. Reddon ◽  
F. Whiting
Keyword(s):  
Nicotinic Acid ◽  
Post Partum ◽  
Pantothenic Acid ◽  
Vitamin Supplementation ◽  
Vitamin B ◽  
Growth Responses ◽  
Growing Period ◽  
Peace River ◽  
River Region ◽  
B Vitamin

Ninety-two sows and two hundred and sixteen pigs were employed in four gestation-lactation and three growing-finishing experiments to determine the adequacy of barley grown on the Grey Wooded soils of the Peace River region in northwestern Canada, as a source of riboflavin, pantothenic and nicotinic acid in swine rations. Vitamin B12 was assessed as a dietary essential in the all-plant rations. In the gestation-lactation experiments sow gains during gestation were greater in the B-vitamin supplemented lot and a trend toward heavier weaning weights of pigs was evident. Vitamin supplementation increased the level of vitamin B12 in sow’s milk collected 1 week post-partum and of both riboflavin and pantothenic acid collected 1 week and 6 weeks post-partum. Nicotinic acid content of sows’ milk was unaffected by supplementation. There was a highly significant decrease in riboflavin level in both control and supplemented lots between 1 and 6 weeks following parturition. The decrease was greatest in the unsupplemented lot.B-vitamin supplementation did not affect growing period gains or pig carcass quality in the growing-finishing experiments. However, certain significant growth responses were noted in the finishing period.The data indicate that the basal rations employed contained adequate riboflavin, pantothenic and nicotinic acid to support normal gestation, lactation and growth in Yorkshire swine.

ALSIKE CLOVER POLLINATION BY HONEY BEES IN THE PEACE RIVER REGION

1959 ◽  
Vol 39 (4) ◽  
pp. 505-511 ◽  
Author(s):  
P. Pankiw ◽  
C. R. Elliott
Keyword(s):  
Honey Bee ◽  
Plant Species ◽  
Honey Bees ◽  
Climatic Conditions ◽  
Bumble Bees ◽  
Flowering Period ◽  
Peace River ◽  
River Region ◽  
Native Pollinator ◽  
Seed Yields

Pollination studies involving zero, one and three colonies of honey bees per acre, on commercial alsike clover fields ranging in size from 15 to 75 acres, were conducted in 1954, 1955, and 1957 in the Hinton Trail district of the Peace River Region of Alberta. These studies indicated that in large fields one colony of honey bees per acre is sufficient to pollinate alsike clover, consideration being given to competition of other crops and to the climatic conditions. The influence of competing crops was such that 65- to 75-acre fields, with one colony per acre, were similar in honey bee populations and seed production to 15- to 20-acre fields with three colonies per acre. Competing plant species accounted for 15 to 36 per cent of the pollen collected by honey bees. Fields with the higher populations of pollinators matured earlier than fields deficient in pollinators. A population of 3400 honey bees per acre (0.7 bee per sq. yd.) throughout the flowering period resulted in seed sets up to 82 per cent and seed yields to 375 lb. per acre. Check fields, where no honey bees were supplied, ranged in production from 29 lb. per acre, with a low native pollinator count, to 293 lb. where a pollinator equivalent of 1300 bumble bees per acre was observed. Bumble bees worked alsike clover at the rate of 28.6 florets per minute, as compared to 20.0 for leaf-cutter bees and 18.7 for honey bees.

Effects of two crop rotations on seasonal runoff and soil loss in the Peace River region

1991 ◽  
Vol 71 (4) ◽  
pp. 533-543 ◽  
Author(s):  
L. J. P. Van Vliet ◽  
J. W. Hall
Keyword(s):  
Soil Loss ◽  
Crop Rotations ◽  
Snowmelt Runoff ◽  
Hordeum Vulgare L ◽  
Peace River ◽  
Residual Variation ◽  
River Region ◽  
Seasonal Runoff ◽  
Runoff And Soil Loss ◽  
Soil Losses

Four erosion plots were monitored from 1983 to 1989 (6 yr) to evaluate the effects of two crop rotations and their constituent crops on runoff and soil loss under natural precipitation near Fort St. John in the Peace River region of British Columbia. Rotation 1 consisted of two cycles of summerfallow — canola (Brassica rapa)-barley (Hordeum vulgare L.), and Rotation 2 included summerfallow — canola-barley-barley underseed to red fescue (Festuca rubra L.)-fescue-fescue. Rainfall and snowmelt runoff were collected and sampled throughout the year to determine seasonal runoff and soil losses. Over the 6 yr, the cumulative runoff and soil losses were consistently greater under Rotation 1 than under Rotation 2. There was a greater than fourfold difference in total soil loss, and 33–35% more total runoff. Rainfall-induced runoff and soil losses were significantly higher for Rotation 1 than for Rotation 2. Snowmelt runoff accounted for 90 and 96% of the total annual runoff and for 39 and 80% of the total annual soil loss from Rotations 1 and 2, respectively. Two large rainfall events during 1983 and 1987, each causing a soil loss in excess of 2000 kg ha−1, accounted for between 85 and 91% of the 6-yr total rainfall-induced erosion from Rotation 1. No differences in runoff or soil loss were detected among crops but the comparisons were insensitive because of high residual variation. Key words: Runoff, soil loss, erosion plots, crop rotations

Ancient DNA reveals northwest range extension of Richardson’s ground squirrel (Urocitellus richardsonii) into northeastern British Columbia, Canada, during the Late Pleistocene

2020 ◽  
Vol 57 (7) ◽  
pp. 855-866
Author(s):  
Thomas C.A. Royle ◽  
Dongya Y. Yang ◽  
Jonathan C. Driver
Keyword(s):  
British Columbia ◽  
Ancient Dna ◽  
Ground Squirrel ◽  
Mitochondrial Control Region ◽  
Archaeological Site ◽  
Ground Squirrels ◽  
Vegetation Communities ◽  
Peace River ◽  
River Region ◽  
Urocitellus Richardsonii

Ancient DNA was extracted from 12 500 to 10 500 year old ground squirrel bones from Tse’K’wa, an archaeological site in the Peace River region of northeastern British Columbia, Canada. Analysis of mitochondrial DNA from seven individuals demonstrates that all are Urocitellus richardsonii (Richardson’s ground squirrel), a species not found in the region today. Phylogenetic and sequence analyses indicate these individuals share a previously undocumented mitochondrial control region haplotype that is most closely related to haplotypes observed in modern specimens from Saskatchewan and Montana. At the end of the Pleistocene these ground squirrels extended their range north and west into open vegetation communities that developed when ice sheets melted and glacial lakes drained. They were subsequently extirpated from the Peace River region when forests replaced earlier pioneering vegetation communities.

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