b = empirical factor combining the effects of physiological influences ... Quite a few assumptions (i.e. method of CO2 delivery, depth of max production, etc. ...
Theoretical equations of d13C, d18O and dD fractionation in C3 ... in the Santa Catalina Mountains, just north of Tucson, Arizona, for the period 1900-1999. ...
Improving Marine Ecosystem Models: Use of Data Assimilation and ... Phyto- and zooplankton counts. DI13C, DO13C, DO15N. Size fractionated d13C and d15N ...
It appears that speleothem carbon isotopes primarily come from plants above the cave. ... Speleothem high d13C values are then interpreted to indicate more C4 grasses. ...
Reservoirs and fluxes from Schlesinger, 1991; d13C from ... Jim Kennet, Clathrate Gun Hypothesis, 2002. Norris and Rohl, 1999. best example. at Paleocene ...
Carbon isotopes and the global carbon cycle. Carbon isotope ... This is why d13C DIC is lower below the photic zone and lowest where respiration is highest ...
El rango d13C en sistemas de plantas y el ambiente. CO2 del aire: -8 ... d15N en sistemas de plantas y el ambiente. N2 del aire: 0. Rango terrestre: -15 a 35 ...
... analyses should not only focus on d180 and d13C but also on elemental ratios, other isotopic ratios and organic geochemistry (of the protoplasm and organic ...
Water Availability. Low High -25 -35. Leaf d13C, per mil. Sampling Atmospheric CO2 ... We expect differences between C3 and C4 plants for discrimination against ...
Fig.1 Climate and phenology in 2003. Diurnal variation of isotopomers ... d13Cr of early season varied from -10 to -28 , in correspondence with the phenology ...
2) The methane becomes enriched in d13C as it moves up, because biological ... Cell clusters like these were probed with SIMS by Orphan et al. 2002, after ...
... and input a known source gas (d13C= -37.2 ) into a PVC column. ... The sand column is constructed of a PVC pipe that is 30cm in diameter and 60cm in length. ...
Long Island Sound has suffered from hypoxia for decades: Result of Global Warming? Eutrophication? It has always been like this ... Sampling mud Elphidium excavatum ...
... fluxes have their own respective isotopic signature and fractionation. ... Using carbon isotope ratios for selection of water use efficient wheat varieties. ...
Title: PowerPoint Presentation Author: Lisa Levin Last modified by: Lisa Levin Created Date: 6/26/2005 2:28:59 PM Document presentation format: On-screen Show
... Doug Worthy1 Jing Chen2, A. Shashkov1, D. Ernst1, A. Chivulescu1, and M. Ernst1 ... Can we measure photosynthesis discrimination (of 13C) on a regional scale? ...
Model assumptions include a pure CH4 hydrate/ seawater system, hydrostatic ... Fig. 2. Multichannel seismics line TD-5. (A) Map showing location of inset (B) ...
... samples every 2-4 hours from the houseboat, and low/high tide samples from the traveling boats. ... The d18O of DO reflects the ratio of productivity to ...
Carbon isotope mass balance modelling of atmospheric vs. oceanic CO2 Tom V. Segalstad * Geological Museum, Natural History Museum, University of Oslo, Norway
Assessing Douglas-fir water-use history using stable isotope (13C and 18O) in ... Western Ecology Division, Corvallis OR. Environmental Protection Agency ...
Welcome to the CLU-IN Internet Seminar Applications of Stable Isotope Analyses to Environmental Forensics (Part 3), and to Understand the Degradation of Chlorinated ...
Using CSIA for Biodegradation Assessment: Potential, Practicalities and Pitfalls B. Sherwood Lollar University of Toronto S. Mancini, M. Elsner, P. Morrill, S. Hirschorn,
... areas of ocean within 30 ppm of atmosphere. Glacial surface ocean must also have ... Suggest that the ocean would respond to natural changes in iron inputs ...
Alluvial fan conglomerates: higher-resolution information on source ... The majority of gravel can be assigned to a subdivision of the CCR stratigraphic column. ...
V. The Mystery Model - exclusive unveiling. A model is a generalised, hypothetical description often based on an ... Santa Catalina Mts. Tucson. 6 km. N. 2300m ...
Calcite Farming in Florida Caves: Isotope ( 18O and 13C) and trace element paleoproxy calibrations Darrel Tremaine1 (tremaine@magnet.fsu.edu), B. P. Kilgore1, P. N ...
Using CSIA for Biodegradation Assessment: Potential, Practicalities and Pitfalls B. Sherwood Lollar University of Toronto S. Mancini, M. Elsner, P. Morrill, S. Hirschorn,
Lecture 11 Stable Isotopes Isotopes of Elements Chart of the Nuclides Delta Notation Isotope Fractionation Equilibrium Kinetic Raleigh See E & H Chpt. 5
Introduction to stable isotopes in Ecological Studies. What are stable ... C, Pee Dee Belemnite (PDB) , 13C/12C = 0.0112372. N, atmospheric 15N/14N = 0.0036765 ...
Primarily Observed Carbon Isotope Effect Occurred in the photolysis Process of PCBs ... Isotopic Fractionation during Photolysis Process of HCB indicated that CSIA ...
The Use of Isotope Geochemistry in Forensic Geology Stable Isotopes Modified from a PowerPoint presentation prepared by J. Crelling, Southern Illinois University
Salinity of erupted water indicates migration of water from deep aquifer. School of GeoSciences ... Aquifer Recharge. 20Ne. 36Ar. 84Kr. Formation Water ...
Quaternary dating. Techniques - basics. Advantages and ... Dendrochronology I. Dendrochronology II. Extending the dendro-record by matching tree-ring ' ...