Botanical investigations in Wood Buffalo Park

Raup, Hugh M.

doi:10.4095/299137

Cited by 25 publications

(32 citation statements)

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“…The open meadows of the Slave River Lowlands (SRL) are believed to have originated as meadows after the drainage of post‐glacial lakes (Raup 1935). The general character of the land is flat, with many sloughs and abandoned stream channels.…”

Section: Methodsmentioning

confidence: 99%

Effects of Prescribed Burning on Herbaceous and Woody Vegetation in Northern Lowland Meadows

Quinlan

Dale

Gates

2003

Restoration Ecology

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Spring burning of sedge‐grass meadows in the Slave River Lowlands (SRL), Northwest Territories, Canada was applied between 1992 and 1998 to reduce shrub encroachment and enhance Bison bison (bison) habitat, although the impact of fire on preferred bison forage was unknown before management. In the summer of 1998 we conducted a study in the Hook Lake area of the SRL to test the effect of burn frequency (unburned, burned once, or burned three times since 1992) on herbaceous plant community composition and Salix spp. L. (willow) shrub vigor. Plant species abundance, litter biomass, soil pH, and depth of the organic soil horizon were measured in 300 1‐m2 quadrats nested within 30 1,000‐m2 plots in both burned and unburned dry meadows. To test the relationship between frequency and willow vigor, all willow shrubs within the plots were assigned a vigor score from I (dead) to IV (flourishing). The spring burns appear to have reduced willow vigor; however, shrub survival remained high (76%) on the most frequently burned meadows. Ordination plots resulting from canonical correspondence analysis suggest that multiple spring burns influenced plant community composition in dry meadow areas and that less palatable bison forage species (e.g., Carex aenea Fern. and Juncus balticus L.) were correlated with a regime of three spring burns. Our results suggest that frequent spring fires in the Hook Lake area have only a small negative effect on willow cover but may reduce the abundance of primary bison forage plants compared with less frequently burned meadows.

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Section: Methodsmentioning

confidence: 99%

Effects of Prescribed Burning on Herbaceous and Woody Vegetation in Northern Lowland Meadows

Quinlan

Dale

Gates

2003

Restoration Ecology

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“… 1 Mean annual precipitation and temperature, Walter & Lieth (1967); 2 Environment Canada (1993); 3 Bork et al . (1997); 4 Dickson (1909); 5 Holland & Coen (1982); 6 Raup (1935); 7 Coupland (1950); 8 Carbyn (1971); 9 Blood (1966); 10 Schwarz & Wein (1997); 11 National Atlas of Canada (1974). …”

Section: Methodsmentioning

confidence: 99%

Nitrogen deposition and forest expansion in the northern Great Plains

2001

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Summary1 Atmospheric nitrogen (N) deposition has become one of the most important agents of vegetation change in densely populated regions. It may also contribute to forest expansion into grasslands at the northern edge of the North American Great Plains. 2 We measured N deposition and available soil N with ion-exchange resin over 2 years in six national parks in areas varying in population density and industrialization. N deposition was significantly higher in four parks in densely populated regions than in two remote parks. . Differences between parks in tissue N concentrations were small, but forest expansion over five decades resulted in the mass of N in vegetation increasing by 74% in Elk Island but by only 26% in Jasper. δ 15 N in forest vegetation was significantly lower in Elk Island than in Jasper, suggesting that anthropogenic sources contribute significantly to the high rates of N entering that ecosystem. 5 We determined the rate of forest expansion within parks using six decades of aerial photographs. Parks in aspen parkland and boreal forest showed a strong positive relationship between forest expansion and N deposition. The relationships found between N deposition, available soil N and forest expansion suggest that even comparatively low rates of N deposition may accelerate the expansion of forest into temperate grasslands.

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“…During recent geologic time, flow pathways and areas of deposition have changed within the PAD. For instance, remnant channels that once connected the Peace River to the central delta lakes are rarely active today, and a main arm of the Athabasca River was once believed to flow through Mamawi Creek (Raup, 1935). The distributary channels of the Athabasca Delta were considered over-extended to the east in the early 1970s and migration of the active delta lobe into the central delta lakes was foreseen to take place in the near future (Bayrock and Root, 1973).…”

Section: Commentmentioning

confidence: 99%

Comment on "Streamflow input to Lake Athabasca, Canada" by Rasouli et al. (2013)

Peters

2014

Hydrol. Earth Syst. Sci.

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Abstract. This comment paper addresses data and analysis issues in a paper entitled "Streamflow Input to Lake Athabasca, Canada" by Rasouli et al. (2013). Analyses of observed and naturalized lake level data for Lake Athabasca are redone in this comment paper with corrected hydrometric data to provide northerners and researchers with the correct information for environmental assessments. The comment paper also highlights the importance of including in the analysis not only direct inflows to Lake Athabasca, but also the hydraulic influences on lake outflow, especially when meaningful future projections of lake levels are required for water management.

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Botanical investigations in Wood Buffalo Park

Cited by 25 publications

References 0 publications

Effects of Prescribed Burning on Herbaceous and Woody Vegetation in Northern Lowland Meadows

Effects of Prescribed Burning on Herbaceous and Woody Vegetation in Northern Lowland Meadows

Nitrogen deposition and forest expansion in the northern Great Plains

Comment on "Streamflow input to Lake Athabasca, Canada" by Rasouli et al. (2013)

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Botanical investigations in Wood Buffalo Park

Cited by 25 publications

References 0 publications

Effects of Prescribed Burning on Herbaceous and Woody Vegetation in Northern Lowland Meadows

Effects of Prescribed Burning on Herbaceous and Woody Vegetation in Northern Lowland Meadows

Nitrogen deposition and forest expansion in the northern Great Plains

Comment on &quot;Streamflow input to Lake Athabasca, Canada&quot; by Rasouli et al. (2013)

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Comment on "Streamflow input to Lake Athabasca, Canada" by Rasouli et al. (2013)