Journal ArticleDOI
Isoscapes: Spatial Pattern in Isotopic Biogeochemistry
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TLDR
Isoscape models of varying quality are available for stable H, C, N, and O isotopes in a range of Earth surface systems, but significant opportunities exist to refine our understanding of biogeochemical cycles and our ability to predict isoscapes through the development of more mechanistic and more comprehensive isoscape model as mentioned in this paper.Abstract:
Isotope ratios of actively cycled elements vary as a function of the biogeochemical processes in which they participate and the conditions under which those processes occur. The resultant spatiotemporal distribution of isotopes in environmental materials can be predicted using models of isotopefractionating processes and data describing environmental conditions across space and time, and it has been termed an isoscape, or isotopic landscape. Analysis of isoscapes and comparison of isoscape predictions with observational data have been used to test biogeochemical models, calculate aerially integrated biogeochemical fluxes based on isotope mass balance, and determine spatial connectivity in biogeochemical, ecological, and anthropological systems. Isoscape models of varying quality are available for stable H, C, N, and O isotopes in a range of Earth surface systems, but significant opportunities exist to refine our understanding of biogeochemical cycles and our ability to predict isoscapes through the development of more mechanistic and more comprehensive isoscape models.read more
Citations
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Journal ArticleDOI
Molecular Paleohydrology: Interpreting the Hydrogen-Isotopic Composition of Lipid Biomarkers from Photosynthesizing Organisms
Dirk Sachse,Isabelle Billault,Gabriel J. Bowen,Yoshito Chikaraishi,Todd E. Dawson,Sarah J. Feakins,Katherine H. Freeman,Clayton R. Magill,Francesca A. McInerney,Marcel T J van der Meer,Pratigya J. Polissar,Richard J. Robins,Julian P. Sachs,Hanns Ludwig Schmidt,Alex L. Sessions,James W. C. White,Jason B. West,Ansgar Kahmen +17 more
TL;DR: In this paper, the authors review the factors and processes that are known to influence the hydrogen-isotopic compositions of lipids from photosynthesizing organisms, and provide a framework for interpreting their D/H ratios from ancient sediments and identify future research opportunities.
Journal ArticleDOI
Illuminating hydrological processes at the soil-vegetation-atmosphere interface with water stable isotopes
TL;DR: In this paper, the authors present a model based on functional units for the DFG research project "From Catchments as Organised Systems to Models based on Functional Units" (FOR 1 ).
Journal ArticleDOI
A review of ecogeochemistry approaches to estimating movements of marine animals
TL;DR: In this paper, a comprehensive meta-analysis of organic zooplankton values at the base of the food web, dissolved inorganic carbon δ13C values, and seawater δ18O values to create, for the first time, robust isoscapes for the Atlantic Ocean is presented.
Journal ArticleDOI
Stable isotopes in leaf water of terrestrial plants.
Lucas A. Cernusak,Margaret M. Barbour,Stefan K. Arndt,Alexander W. Cheesman,Nathan B. English,Taylor S. Feild,Brent R. Helliker,Meisha Holloway-Phillips,Joseph A. M. Holtum,Ansgar Kahmen,Francesca A. McInerney,Niels C. Munksgaard,Niels C. Munksgaard,Kevin A. Simonin,Xin Song,Hilary Stuart-Williams,Jason B. West,Graham D. Farquhar +17 more
TL;DR: The current state of knowledge of stable isotope enrichment of leaf water, and its relevance for isotopic signals incorporated into plant organic matter and atmospheric gases is reviewed.
References
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Book
Statistics for spatial data
Noel A Cressie,Noel A Cressie +1 more
TL;DR: In this paper, the authors present a survey of statistics for spatial data in the field of geostatistics, including spatial point patterns and point patterns modeling objects, using Lattice Data and spatial models on lattices.
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Carbon Isotope Discrimination and Photosynthesis
TL;DR: In this article, the physical and enzymatic bases of carbone isotope discrimination during photosynthesis were discussed, noting how knowledge of discrimination can be used to provide additional insight into photosynthetic metabolism and the environmental influences on that process.
Journal ArticleDOI
Variation in trophic shift for stable isotope ratios of carbon, nitrogen, and sulfur
TL;DR: For example, this article found that the trophic shift for C was lower for consumers acidified prior to analysis than for unacidified samples ( +0.5 + 0.13%o rather than 0.0%o, as commonly assumed).