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The effects of climatic warming on the properties of boreal lakes and streams at the Experimental Lakes Area, northwestern Ontario
A period of prolonged warmer, drier-than-normal weather in northwestern Ontario during the 1970s and 1980s resulted in severe forest fires that caused dramatic changes to lake and stream catchments.Expand
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Human Activity Mediates a Trophic Cascade Caused by Wolves
Experimental evidence of trophic cascades initiated by large vertebrate predators is rare in terrestrial ecosystems. A serendipitous natural experiment provided an opportunity to test the trophicExpand
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Seasonal variation in water chemistry over a bog-rich fen gradient in Continental Western Canada
Surface and subsurface (0.5, 1.0, and 1.5 m depths) water was sampled weekly in 1989 and biweekly in 1990 during the ice-free season along a bog-rich fen gradient in central Alberta.Expand
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Climate-induced changes in the dissolved organic carbon budgets of boreal lakes
During 20 years of climatic warming, drought and increased forest firesbetween 1970 and 1990, DOC concentrations declined by 15--25%in lakesof the Experimental Lakes Area, northwestern Ontario,Expand
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Export of dissolved organic carbon and acidity from peatlands
Because of the vast areal extent and high rates of organic matter production of peatlands, such ecosystems have a significant but poorly quantified impact on large numbers of lakes. This studyExpand
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Effects of Multiple Fires on Nutrient Yields from Streams Draining Boreal Forest and Fen Watersheds: Nitrogen and Phosphorus
Wildfire in the boreal forests at the Experimental Lakes Area in Ontario caused significant losses of nitrogen and phosphorus in streams. Both watershed type and fire intensity appear to determineExpand
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Oil sands mining and reclamation cause massive loss of peatland and stored carbon
We quantified the wholesale transformation of the boreal landscape by open-pit oil sands mining in Alberta, Canada to evaluate its effect on carbon storage and sequestration. Contrary to claims madeExpand
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Development of Sphagnum-dominated peatlands in boreal continental Canada
Peat cores from five Sphagnum-dominated peatlands in boreal continental Canada were analyzed for plant macro fossils. Results indicate that peatland development was influenced both by local autogenicExpand
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Vegetation communities in continental boreal wetlands along a salinity gradient: Implications for oil sands mining reclamation
Abstract Oil sands mining is a major disturbance to boreal landscapes in north-eastern Alberta, Canada. Freshwater peatlands dominate the landscape prior to mining, but the post-mining reclamationExpand
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Predation risk and the functional response of elk–aspen herbivory
Hypotheses for trembling aspen (Populus tremuloides) decline in Rocky Mountain national parks include long-term high herbivory by elk (Cervus elaphus), decreased disturbance, climate change, andExpand
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