Jökull

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Jökull - 01.12.2006, Qupperneq 39

Jökull - 01.12.2006, Qupperneq 39
The stable isotopic (C and N) composition of modern plants and lichens from northern Iceland Robbins, C. T., G. V. Hilderbrand and S. D. Farley 2002. Incorporating concentration dependence in stable isotope mixing models: a response to Phillips and Koch (2002). Oecologia 133, 10–13. Robinson, D. 2001. Delta N-15 as an integrator of the nitrogen cycle. Trends in Ecology and Evolution 16, 153–162. Rundgren, M. 1998. Early-Holocene vegetation of northern Iceland: pollen and plant macrofossil evidence from the Skagi peninsula. Holocene 8, 553– 564. Sage, R. F., D. A. Wedin and M. Li 1999. The biogeography of C4 photosynthesis: Patterns and controlling factors. In: C4 Plant Biology, R. F. Sage and R. K. Monson (Eds.) Academic Press. Schelske, C. L. and D. A. Hodell 1991. Recent Changes in Productivity and Climate of Lake-Ontario Detected by Isotopic Analysis of Sediments. Limnology and Oceanography 36, 961–975. Simpson, I. A., W. P. Adderley, G. Guthmundsson, M. Hallsdottir, M. A. Sigurgeirsson and M. Snaesdottir 2002. Soil limitations to Agrarian land production in premodern Iceland. Human Ecology 30, 423443. Tozer, W. C., D. Hackell, D. B. Miers and W. B. Silvester 2005. Extreme isotopic depletion of nitrogen in New Zealand lithophytes and epiphytes; the result of diffusive uptake of atmospheric ammonia? Oecologia, 144, 628–635. Ward, J. K., D. T. Tissue, R. B. Thomas and B. R. Strain 1999. Comparative responses of model C3 and C4 plants to drought in low and elevated CO2. Global Change Biology 5, 857–867. Wetzel, R. G. 1983. Limnology, Saunders College Publishing, 767 pp. Wooller, M., B. Smallwood, U. Scharler, M. Jacobson and M. Fogel 2003. A taphonomic study of delta C-13 and delta N-15 values in Rhizophora mangle leaves for a multi-proxy approach to mangrove palaeoecology. Organic Geochemistry 34, 1259–1275. Wooller, M., B. Johnson, A. Wilkie and M. Fogel 2005. Stable isotope characteristics across narrow savan- na/woodland ecostones in Wolfe Creek Meteorite Cra- ter, Western Australia. Oecologia, 145, 100–112. JÖKULL No. 56 37
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