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Richard April Dunham Beldon Jr. Professor of Geology and Natural Sciences Ph.D. University of Massachusetts
Teaching Specialties:
Geochemistry,
mineralogy, clay and x-ray mineralogy
Research Interests/Related Travel:
Low temperature geochemistry, clay petrology and mineralogy,
acid rain, lake acidification and forest decline, aluminum biogeochemistry.
Research areas include the Smoky, Sierra Nevada, Cascade, White and Adirondack Mountains of the US;
West Germany; Sweden; Norway; Canada; and Australia.
Distinctions:
Swedish Natural Science Research Council (NFR) Visiting Scientist Awards (1984-85, 1990-91);
NSF research, curriculum and equipment grants (1977, 1979, 1980, 1985, 1989, 1992, 1997, most recent:
2005-2009 - Calcium Depletion in Adirondack Forests Affected by Acid Deposition and its Effect on
Aquatic and Terrestrial Food Chains); Interdisciplinary acid rain research grants
from EPRI, EPA, DOE, Oak Ridge National Laboratory and the Swedish
Natural Science Research Council; consultant National Geographic Society, U.S. Geological Survey
(Water Resources Division), Department of Energy.
Recent Publications:
April, R. H., Keller, D. M. and Driscoll, C., 2004, Smectite in Spodosols from the Adirondack Mountains of New York. Clay Minerals,
v. 39: 99-113.
Johnson, C. E., Petras, R. J., April, R. H., and Siccama, T. G., 2004, Post-glacial lead dynamics in a forest soil.
Water, Air and Soil Pollution: Focus v. 4: 579-590.
April, R. H., 2003, "Talc" - in the Encyclopedia of Sediments and Sedimentary Rocks,
edited by G. V. Middleton, Kluwer Academic Publishers, Dordrecht, The Netherlands.
Bormann, B. T., Wang, D., Bormann, F. H., Benoit, G. April, R. and Snyder, M. C., 1998, Rapid plant-induced weathering
in an aggrading experimental ecosystem: Biogeochemistry, v. 43, 129-155.
Hyman, M. E., Johnson, C. E., Bailey, S. W., April, R. H., and Hornbeck, J. W. (1998), Chemical weathering and cation loss
in a base-poor watershed: Geol. Soc. Amer. Bull., v. 110, no.1, 85-95.
Benoit, G.,Rozan, T.F. and April, R., 1997, A selective dissolution analysis optimized for measurement of weathering products
in a soil: Soil Sci. Soc. Am. J., v. 61, 949-958.
April, R. H., 1994, An NSF-funded curriculum initiative designed to attract minority students to geology: Journal of Geological
Education, v. 42, no. 5, 447-451.
Richter, D. D., Markewitz, D., Wells, C. G., Allen, H. L., April, R. H., Heine, P. R., and Urrego, B., 1994, Soil chemical
change during three decades in an old-field Loblolly Pine (Pinus Taeda L.) ecosystem: Ecology, v. 75, no. 5, 1463-1473.
April, R. H., and Keller, D., 1992, Saponite and vermiculite in amygdales of the Granby Basaltic Tuff, Connecticut Valley:
Clays and Clay Minerals, v. 40, no. 1, 22-31.
April, R. H., and Newton, R. M., 1992, Mineralogy and Mineral Weathering: in Atmospheric Deposition and Forest Nutrient Cycling,
D. W. Johnson and S. E. Lindberg, eds., Ecological Studies v. 91, pp. 378-425, Springer-Verlag, New York, 707 pp.
Cronan, C., Driscoll, C., Newton, R.M., Kelly, J., Schofield, C., Bartlett, R., and April, R.H., 1990, A comparative analysis
of aluminum biogeochemistry in a northeastern and a southeastern forested watersheds: Water Resources Research , v. 26, no. 7, 1413-1430.
April, R.H., and Keller, D., 1990, Interactions between minerals and roots in forest soils: Sciences Geologiques Mem., no.
85, 89-98, Strasbourg, France.
April, R.H., and Keller, D., 1990, Mineralogy of the rhizosphere in forest soils of the eastern United States: Biogeochemistry, v. 9, 1-18.
Cronan, C.S., April, R.H., Bartlett, R.J., (and others), 1989, Aluminum toxicity in forests exposed to acidic deposition: the
ALBIOS results: Water, Air, and Soil Pollution, v. 48, 181-192.
Kada, J., Heit, M., April, R.H., Miller, K., Keller, D., and Kuiper, J., 1989, Factors influencing the distribution and inventories
of Cs-137 in fresh water lake sediments: Proceedings of the 7th International Conference on Heavy Metals in the Environment, Geneva,
Switzerland, 12-15 September.
Stevens, R., April, R.H., and Wedel, P., 1987, Sediment color and weathered preglacial sources of Quaternary clays, southwestern Sweden:
Geologiska Foreningens i Stockholm Forhandlingar (Journal of the Geol. Soc. of Sweden), v. 109, 241-253.
April, R.H., 1987, Synopsis of soil mineralogy and chemistry in the ILWAS, RILWAS, and ALBIOS watersheds: in ÒGEOMON-International
Workshop on Geochemistry and Monitoring in Representative Basins,Ó B. Moldan and T. Paces, eds., Geological Survey, Prague, Czechoslovakia, 247-250.
Goldstein, R.,, Gherini, S., Driscoll, C., April, R.H., Schofield, C., and Chen, C., 1987, Lake-watershed acidification in the North
Branch of the Moose River: Introduction: Biogeochemistry, v. 3, nos. 1-3, 5-20 (special issue).
Newton, R.M., Weintraub, J., and April, R.H., 1987, The relationship between surface water chemistry and geology in the North Branch
of the Moose River: Biogeochemistry, v. 3, nos. 1-3, 21-35 (special issue).
April, R.H., Newton, R.M., and Coles, L.T., 1986, Chemical weathering in two Adirondack watersheds: Past and present day rates:
Geological Society of America Bulletin, v. 97, 1232-1238.
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