References
- Baes , C. F. and McLaughlin , S. B. 1984 . Trace elements in tree rings: Evidence of recent and historical air pollution . Science , 224 : 494 – 497 .
- Bondietti , E. A. , Baes , C. F. III and McLaughlin , S. B. 1989 . Radial trends in cation ratios in tree rings as indicators of the impact of atmospheric deposition on forests . Can. J. For. Res. , 19 : 586 – 594 .
- Canada Soil Survey Committee . 1992 . The Canadian System of Soil Classification (Publication No. 1646) Ottawa, , Canada : Agriculture Canada .
- Cronan , C. S. and Schofield , C. L. 1990 . Relationships between aqueous aluminum and acidic deposition in forested watersheds of North America and Northern Europe . Environ. Sci. Technol. , 24 : 1100 – 1105 .
- Drouet , T. , Herbauts , J. and Demaiffe , D. 2005 . Long‐term records of strontium isotopic composition in tree rings suggest changes in forest calcium sources in the early 20th century . Global Change Biology , 11 : 1926 – 1940 .
- Eklund , M. 1995 . Cadmium and lead deposition around a Swedish battery plant as recorded in oak tree rings . J. Environ. Qual. , 24 : 126 – 131 .
- Ferguson , I. B. and Bollard , E. G. 1976 . The movement of calcium in woody stems . Annals of Botany , 40 : 1057 – 1065 .
- Guyette , R. P. , Cutter , B. E. and Henderson , G. S. 1989 . Long‐term relationships between molybdenum and sulfur concentrations in red cedar tree rings . J. Environ. Qual. , 18 : 385 – 389 .
- Guyette , R. P. , Cutter , B. E. and Henderson , G. S. 1991 . Long‐term correlations between mining activity and levels of lead and cadmium in tree rings of eastern red cedar . J. Environ. Qual. , 20 : 146 – 150 .
- Herbauts , J. , Penninckx , V. , Gruber , W. and Meerts , P. 2002 . Radial variations in cation exchange capacity and base saturation in the wood of pedunculate oak and European beech . Can. J. For. Res. , 32 : 1829 – 1837 .
- Houle , D. , Duchesne , L. , Moore , J.‐D. , Richer Laflèche , M. and Ouimet , R. 2002 . Soil and tree‐ring chemistry response to liming in a sugar maple stand . J. Environ. Qual. , 31 : 1993 – 2000 .
- Martin , R. R. , Naftel , S. J. , Skinner , W. , Jones , K. W. and Feng , H. 2003 . Micro‐synchrotron X‐ray fluorescence of the metal distribution in a black spruce tree stem: Evidence for radial mobility . X‐Ray Spectrometry , 32 : 402 – 407 .
- McGrath , J. F. and Robson , A. D. 1984 . The movement of zinc through excised stems of seedlings of Pinus radiata D. Don . Annals of Botany , 54 : 231 – 242 .
- Momoshima , N. and Bondietti , E. A. 1990 . Cation binding in wood: Applications to understanding historical changes in divalent cation availability to red spruce . Can. J. For. Res. , 20 : 1840 – 1849 .
- Soil Survey Staff . 1999 . “ Soil taxonomy: A basic system of soil classification for making and interpreting soil surveys (USDA Natural Resources Conservation Service Agricultural Handbook 436) ” . Washington, D.C. : U.S. Government Printing Office .