Jökull


Jökull - 01.12.2006, Page 38

Jökull - 01.12.2006, Page 38
Y. Wang and M. J. Wooller Techniques. D. C. a. F. Coleman, Brian, Ed., pp. 274. Academic Press, INC., San Diego. Erskine, P. D., D. M. Bergstrom, S. Schmidt, G. R. Stewart, C. E. Tweedie and J. D. Shaw 1998. Subantarctic Macquarie Island - a model ecosystem for studying animal-derived nitrogen sources using N- 15 natural abundance. Oecologia 117, 187–193. Evans, R. D. 2001. Physiological mechanisms influencing plant nitrogen isotope composition. Trends in Plant Science 6, 121–126. Fogel, M., M. Wooller, J. Cheeseman, B. Smallwood, Q. Roberts, I. Romero and M. Jacobson. Nitrogen Isotopic Tracers of Phosphorus Limitation in Man- grove Ecosystems. Biogeochemistry, in press. Fogg, G. E., D. E. Rolston, D. L. Decker, D. T. Louie and M. E. Grismer, 1998. Spatial variation in nitrogen isotope values beneath nitrate contamination sources. Ground Water 36, 418–426. Garten, C. T. 1992. Nitrogen isotope composition of ammonium and nitrate in bulk precipitation and forest throughfall. International J. Environmental Analytical Chemistry 47, 33–45. Harris, D., W. R. Horwath and C. van Kessel 2001. Acid fumigation of soils to remove carbonates prior to total organic carbon or carbon-13 isotopic analysis. Soil Science Society of America Journal 65, 1853–1856. Herczeg, A. L., A. K. Smith and J. C. Dighton 2001. A 120 year record of changes in nitrogen and carbon cycling in Lake Alexandrina, South Australia: C:N, delta N- 15 and delta C-13 in sediments. Applied Geochemistry 16, 73–84. Hobbie, E. A., S. A. Macko and H. H. Shugart 1998. Patterns in N dynamics and N isotopes during primary succession in Glacier Bay, Alaska. Chemical Geology 152, 3–11. Hodell, D. A. and C. L. Schelske 1998. Production, sedimentation, and isotopic composition of organic matter in Lake Ontario. Limnology and Oceanography 43, 200–214. Jones, R. I., L. King, M. M. Dent, S. C. Maberly and C. E. Gibson 2004. Nitrogen stable isotope ratios in surface sediments, epilithon and macrophytes from upland lakes with differing nutrient status. Freshwater Biology 49, 382–391. Keeley, J. E. and D. R. Sandquist 1992. Carbon - Fresh- Water Plants. Plant Cell and Environment 15, 1021– 1035. Kendall, C. 1998. Tracing Nitrogen Sources and Cycling in Catchments. In: Isotope Tracers in Catchment Hydrology, C. a. M. Kendall and J. J. (Eds.) Elsevier Science B. V., Amsterdam, 519–576. Kielland, K., B. Barnett and D. Schell 1998. Intraseasonal variation in the delta N-15 signature of taiga trees and shrubs. Canadian Journal of Forest Research-Revue Canadienne De Recherche Forestiere 28, 485–488. Lamb, A. L., M. J. Leng, M. U. Mohammed and H. F. Lamb 2004. Holocene climate and vegetation change in the Main Ethiopian Rift Valley, inferred from the composition (C/N and delta C-13) of lacustrine organic matter. Quaternary Science Reviews 23, 881– 891. Lucke, A., G. H. Schleser, B. Zolitschka and J. F. W. Negendank 2003. A Lateglacial and Holocene organic carbon isotope record of lacustrine palaeoproductivity and climatic change derived from varved lake sediments of Lake Holzmaar, Germany. Quaternary Science Reviews 22, 569–580. Martinelli, L. A., M. C. Piccolo, A. R. Townsend, P. M. Vitousek, E. Cuevas, W. McDowell, G. P. Robertson, O. C. Santos and K. Treseder 1999. Nitrogen stable isotopic composition of leaves and soil: Tropical versus temperate forests. Biogeochemistry 46, 4-65. McKee, K. L., I. C. Feller, M. Popp and W. Wanek 2002. Mangrove isotopic (delta N-15 and delta C- 13) fractionation across a nitrogen vs. phosphorus limitation gradient. Ecology 83, 1065–1075. Meyers, P. A. 1994. Preservation of Elemental and Isotopic Source Identification of Sedimentary Organic Matter. Chemical Geology 114, 289–302. Meyers, P. A., G. E. Tenzer, M. E. Lebo and J. E. Reuter 1998. Sedimentary record of sources and accumulation of organic matter in Pyramid Lake, Nevada, over the past 1,000 years. Limnology and Oceanography 43, 160–169. Nadelhoffer, K. F. and B. Fry 1988. Controls on natural N- 15 and C-13 abundances in forest soil organic-matter. Soil Science Society of America Journal 52, 1633– 1640. Paerl, H. W. and M. L. Fogel 1994. Isotopic charac- terization of atmospheric nitrogen inputs as sources of enhanced primary production in coastal Atlantic- Ocean waters. Marine Biology 119, 635–645. Peterson, B. J. and B. Fry 1987. Stable isotopes in ecosystem studies. Annual Review of Ecology and Systematics 18, 293–320. 36 JÖKULL No. 56
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