Ecological Archives E087-099-A2

Alain Patoine and Peter R. Leavitt. 2006. Century-long synchrony of fossil algae in a chain of Canadian prairie lakes. Ecology 87:1710–1721.

Appendix B. List of environmental variables examined as controls of algal synchrony. All environmental data from Hall et al. (1999a).

Type of variable

Variable name (units)

Year span

Climate

Spring evaporation at Regina (mm)

1910–1994

 

Fall evaporation at Regina (mm)

1910–1994

 

Summer evaporation at Regina (mm)

1910–1994

 

Spring precipitation at Indian Head (mm)

1910–1994

 

Summer precipitation at Indian Head (mm)

1910–1994

 

Fall precipitation at Indian Head (mm)

1910–1994

 

Winter precipitation at Indian Head (mm)

1910–1994

 

Mean monthly maximum air T during spring at Indian Head (°C)

1890–1994

 

Mean monthly maximum air T during summer at Indian Head (°C)

1890–1994

 

Mean monthly maximum air T during fall at Indian Head (°C)

1890–1994

 

Mean monthly maximum air T during winter at Indian Head  (°C)

1890–1994

 

Mean monthly minimum air T during spring at Indian Head (°C)

1890–1994

 

Mean monthly minimum air T during summer at Indian Head (°C)

1890–1994

 

Mean monthly minimum air T during fall at Indian Head (°C)

1890–1994

 

Mean monthly minimum air T during winter at Indian Head (°C)

1890–1994

 

Ice break-up date of the Red River at Winnipeg (day of year)

1870–1994

 

Ice-free season of the Red River at Winniped (days)

1870–1994

 

Qu’Appelle River flow at Lumsden (log base 10 of ML)

1910–1994

 

Qu’Appelle River flow at Welby (log base 10 of ML)

1910–1994

 

El Niño Southern Oscillation index

1870–1994

 

Pacific Decadal Oscillation

1900–1994

 

Northern Atlantic Oscillation

1860–1994

Resource Use

Annual commercial fish harvest in Qu’Appelle Valley lakes
(square root of kg)

1920–1994

 

Qu’Appelle Valley cattle population

1920–1994

 

Qu’Appelle Valley livestock biomass (kg)

1920–1994

 

Qu’Appelle Valley area of land in farms (ha)

1920–1994

Urbanization

Regina human population

1900–1994

LITERATURE CITED

Hall, R. I., P. R. Leavitt, R. Quinlan, A. S. Dixit, and J. P. Smol. 1999. Effects of agriculture, urbanization, and climate on water quality in the northern Great Plains. Limnology and Oceanography 44 (3, part 2):739–756.



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