Technical Report: Human Alteration of the Global Nitrogen Cycle: Sources and Consequences
- P. Vitousek, J. Aber, D. Tilman
- Environmental Science
- 1 August 1997
Nitrogen is a key element controlling the species composition, diversity, dynamics, and functioning of many terrestrial, freshwater, and marine ecosystems. Many of the original plant species living…
Forecasting Agriculturally Driven Global Environmental Change
- D. Tilman, J. Fargione, D. Swackhamer
- Environmental ScienceScience
- 13 April 2001
Should past dependences of the global environmental impacts of agriculture on human population and consumption continue, 109 hectares of natural ecosystems would be converted to agriculture by 2050, accompanied by 2.4- to 2.7-fold increases in nitrogen- and phosphorus-driven eutrophication of terrestrial, freshwater, and near-shore marine ecosystems.
Lakes and reservoirs as regulators of carbon cycling and climate
- L. Tranvik, J. Downing, G. Weyhenmeyer
- Environmental Science
- 1 November 2009
We explore the role of lakes in carbon cycling and global climate, examine the mechanisms influencing carbon pools and transformations in lakes, and discuss how the metabolism of carbon in the inland…
Evolution of phosphorus limitation in lakes.
- D. Schindler
- Environmental Science, MedicineScience
- 21 January 1977
Eutrophication of lakes cannot be controlled by reducing nitrogen input: Results of a 37-year whole-ecosystem experiment
- D. Schindler, R. Hecky, S. Kasian
- Environmental ScienceProceedings of the National Academy of Sciences…
- 12 August 2008
Reducing nitrogen inputs increasingly favored nitrogen-fixing cyanobacteria as a response by the phytoplankton community to extreme seasonal nitrogen limitation, and the lake remained highly eutrophic, despite showing indications of extreme nitrogen limitation seasonally.
An impending water crisis in Canada's western prairie provinces.
- D. Schindler, W. Donahue
- Environmental ScienceProceedings of the National Academy of Sciences…
- 9 May 2006
It is predicted that in the near future climate warming, via its effects on glaciers, snowpacks, and evaporation, will combine with cyclic drought and rapidly increasing human activity in the WPP to cause a crisis in water quantity and quality with far-reaching implications.
POTENTIAL EFFECTS OF CLIMATE CHANGES ON AQUATIC SYSTEMS: LAURENTIAN GREAT LAKES AND PRECAMBRIAN SHIELD REGION
- J. Magnuson, K. Webster, F. Quinn
- Environmental Science
- 30 June 1997
The region studied includes the Laurentian Great Lakes and a diversity of smaller glacial lakes, streams and wetlands south of permanent permafrost and towards the southern extent of Wisconsin…
The effects of climatic warming on the properties of boreal lakes and streams at the Experimental Lakes Area, northwestern Ontario
- D. Schindler, S. Bayley, M. Stainton
- Environmental Science
- 1 July 1996
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.…
The cumulative effects of climate warming and other human stresses on Canadian freshwaters in the new millennium
- D. Schindler
- Environmental Science
- 2001
Climate warming will adversely affect Canadian water quality and water quantity. The magnitude and timing of river flows and lake levels and water renewal times will change. In many regions, wetlands…
Oil sands development contributes elements toxic at low concentrations to the Athabasca River and its tributaries
- Erin N. Kelly, D. Schindler, P. Hodson, J. Short, Roseanna Radmanovich, Charlene C. Nielsen
- Environmental ScienceProceedings of the National Academy of Sciences…
- 30 August 2010
Canada's or Alberta's guidelines for the protection of aquatic life were exceeded for seven PPE—cadmium, copper, lead, mercury, nickel, silver, and zinc—in melted snow and/or water collected near or downstream of development.
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