Search Results - (Author, Cooperation:D. E. Canfield)
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1Latest Papers from Table of Contents or Articles in PressD. E. Canfield ; L. R. Kump
American Association for the Advancement of Science (AAAS)
Published 2013Staff ViewPublication Date: 2013-02-02Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Commerce/*trends ; Nanotubes, Carbon/*chemistryPublished by: -
2Latest Papers from Table of Contents or Articles in PressS. A. Crowe ; G. Paris ; S. Katsev ; C. Jones ; S. T. Kim ; A. L. Zerkle ; S. Nomosatryo ; D. A. Fowle ; J. F. Adkins ; A. L. Sessions ; J. Farquhar ; D. E. Canfield
American Association for the Advancement of Science (AAAS)
Published 2014Staff ViewPublication Date: 2014-11-08Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Biological Products/chemical synthesis/chemistry/*history ; History, Ancient ; Indonesia ; Seawater/*chemistry ; Sulfates/analysis/*history ; Sulfur Isotopes/analysis/historyPublished by: -
3Latest Papers from Table of Contents or Articles in PressS. A. Crowe ; L. N. Dossing ; N. J. Beukes ; M. Bau ; S. J. Kruger ; R. Frei ; D. E. Canfield
Nature Publishing Group (NPG)
Published 2013Staff ViewPublication Date: 2013-09-27Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Atmosphere/*chemistry ; Biological Evolution ; Chromium Isotopes/analysis ; Cyanobacteria/metabolism ; Earth (Planet) ; Geologic Sediments/analysis/chemistry ; History, Ancient ; Iron/analysis ; Oxidation-Reduction ; Oxygen/*analysis/metabolism ; Photosynthesis ; South AfricaPublished by: -
4Articles: DFG German National LicensesStaff View
ISSN: 1095-8649Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: BiologyNotes: Gizzard shad Dorosoma cepedianum were collected in 23 and threadfin shad D. petenense were collected in 22 of the 60 Florida lakes sampled. Logistic regression equations were 94% effective for predicting gizzard shad occurrence from chlorophyll and lake surface area, and 84% effective for predicting threadfin shad occurrence from lake surface area and lake volume inhabited (PVI). Occurrence of both shad species was related positively to lake size. In lakes where gizzard shad or threadfin shad were collected, shad density and biomass of both shad species were related positively to chlorophyll. Gizzard shad populations were generally vulnerable to predation in lakes, with the per cent of gizzard shad ≤200mm LT values exceeding 60% with few exceptions. Effects of gizzard shad and threadfin shad on fish community dynamics may be confined to relatively large (〉100 ha) and fertile (chlorophyll 〉20–30μg l−1) Florida lakes.Type of Medium: Electronic ResourceURL: -
5Articles: DFG German National LicensesStaff View
ISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] The Earth has not always been bathed in an oxygen-rich atmosphere. Models of the early atmosphere suggest that it was oxygen-free, and contained chemically reduced compounds such as carbon monoxide, hydrogen gas and possibly methane. Oxygen could not accumulate until microorganisms that produced ...Type of Medium: Electronic ResourceURL: -
6Articles: DFG German National LicensesStaff View
ISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] There was a significant oxidation of the Earth's surface around 2 billion years ago (2 Gyr). Direct evidence for this oxidation comes, mostly, from geological records of the redox-sensitive elements Fe and U reflecting the conditions prevailing during weathering. The oxidation event was ...Type of Medium: Electronic ResourceURL: -
7Articles: DFG German National LicensesFossing, H. ; Gallardo, V. A. ; Jørgensen, B. B. ; Hüttel, M. ; Nielsen, L. P. ; Schulz, H. ; Canfield, D. E. ; Forster, S. ; Glud, R. N. ; Gundersen, J. K. ; Küver, J. ; Ramsing, N. B. ; Teske, A. ; Thamdrup, B. ; Ulloa, O.
[s.l.] : Nature Publishing Group
Published 1995Staff ViewISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] Thioploca mats, sediment and water chemistry were studied along a shelf transect off the Chilean coast during late summer, March 1994 (Fig. 1). In the densest Thioploca mat, at 87m water depth, the wet weight of sheathed Thioploca reached nearly 1 kg m2, of which the total bacterial ...Type of Medium: Electronic ResourceURL: