|
|
Article: Species identity and aqueous calcium concentrations as determinants of calcium concentrations of freshwater crustacean zooplankton.
- Article from:
- Canadian Journal of Fisheries and Aquatic Sciences
- Article date:
- May 1, 2006
- Author:
CopyrightCOPYRIGHT 2006 NRC Research Press. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
|
Abstract: Calcium (Ca) is a major component of the crustacean zooplankton carapace. As crustacean zooplankton obtain most of their Ca from lake water, taxa with high Ca demands may be negatively affected if environmental Ca concentrations fall below thresholds necessary for adequate Ca uptake rates. Currently, Ca concentrations are falling in many soft-water lakes with a history of acid deposition, both within Canada and globally. Hence, there is a need to identify species with high Ca demands. We analyzed Ca concentrations of eight crustacean zooplankton taxa from nine lakes spanning a 0.4-35 mg x [L.sup.-1] Ca gradient. Our objectives were to determine (i) if both ...
Related newspaper, magazine, and journal articles:
|
|
Article: La oportunidad de CA: Computer Associates revela el ...
E Semanal;
September 6, 2004 ;
700+ words
...Dentro del Foro Global de Liderazgo en TI, Steve Lemme, vicepresidente de la divisin Advantage y Mainframe de Computer Associates (CA), expres que una de las razones para visitar nuestro pas es porque Amrica Latina representa un rea de crecimiento importante para CA, igual que la regin sur (en
|
|