The experimental acidification of Lake 223 (Experimental Lakes Area, northwestern Ontario) with sulfuric acid in 1976-1983 allowed a detailed examination of the capacity of the lake to neutralize hydrogen ion. A whole-lake alkalinity and ion budget for Lake 223 showed that 6681% of the added sulfuric acid was neutralized by alkalinity production in the lake. Nearly 85% of in situ alkalinity pro...

Zheng Liu,1,2 Xiaolong Zou,3 Jia-Wei Mei,4 and Feng Liu2,5 1Institute for Advanced Study, Tsinghua University, Beijing 100084, China 2Department of Materials Science and Engineering, University of Utah, Salt Lake City, Utah 84112, USA 3Department of Materials Science and Nanoengineering, Rice University, Houston, Texas 77005, USA 4Perimeter Institute for Theoretical Physics, Waterloo, Ontario, ...

Zheng Liu,1,2 Jia-Wei Mei,3 and Feng Liu2,4 1Institute for Advanced Study, Tsinghua University, Beijing 100084, China 2Department of Materials Science and Engineering, University of Utah, Salt Lake City, Utah 84112, USA 3Perimeter Institute for Theoretical Physics, Waterloo, Ontario, Canada N2L 2Y5 4Collaborative Innovation Center of Quantum Matter, Beijing 100084, China (Received 24 November 2...

MARS ANALOG ENIVRONMENT: LESSONS FROM SPOTTED LAKE. A. Pontefract, J. Hachey, A. Mojarro, V. K. Walker, H. Rowedder, T. F. Zhu, C. Lui, M. T. Zuber, G. Ruvkun, and C. E. Carr. Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139 ([email protected]), Deparment of Molecular Biology, Massachusetts General Hospital, Boston, MA 02114, Dep...

OTHER HIGH-RESOLUTION CHRONOMETERS. Y. Amelin, M. Wadhwa, and G. Lugmair, Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario K1A 0E8, Canada, Dept. of Geology, The Field Museum, 1400 S. Lake Shore Dr., Chicago, IL 60605, USA and The Chicago Center for Cosmochemistry, 5640 S. Ellis Ave., Chicago, IL 60637, Scripps Inst. of Oceanography, University of Calif. San Diego, La Jolla, CA 92...

Geosmin is an odorous secondary metabolite produced by some cyanobacteria during growth and released from the cells. Little is known about the biosynthesis of geosmin and the gene(s) required for its production have not been characterized. During late August and early September geosmin episodes due to planktonic cyanobacteria frequently occur in the northwest basin of Lake Ontario waters result...

South Parkdale is the southern section of the Village of Parkdale, annexed by Toronto in 1889, ten years after its official incorporation. The area grew rapidly in the late 19th century as one of Toronto’s first commuter suburbs, spurred by the development of the railway and, later, the streetcar. Streets were laid out to allow access south to Lake Ontario and north to Queen Street, the main th...

This paper reviews historical differences among native lake trout (Salvelinus namaycush) populations, genetic comparisons of populations, heritability of physiological traits, performance of strains after stocking, and the role of genetics in management. Differences among lake trout were historically recognized by aborignal people, Jesuit missionaries, and French voyageurs, and later by natural...

The remediation of toxic sediment in harbours and urban waterways requires detailed mapping of contaminated sediment distribution and thickness. Conventional methods rely on interpolation of pollutant concentrations from widely spaced core samples but can lead to significant errors in estimating sediment distribution. An improved approach, as demonstrated by recent work in Hamilton Harbour in L...