Articles | Volume 9, issue 11
https://doi.org/10.5194/bg-9-4803-2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-9-4803-2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
26 Nov 2012
Research article |
| 26 Nov 2012
Chemical composition of modern and fossil hippopotamid teeth and implications for paleoenvironmental reconstructions and enamel formation – Part 2: Alkaline earth elements as tracers of watershed hydrochemistry and provenance
G. Brügmann
Institut für Geowissenschaften, Johannes Gutenberg-Universität Mainz, Joh.-Joachim-Becher-Weg 21, 55099 Mainz, Germany
J. Krause
Max-Planck-Institut für Chemie, Joh.-Joachim-Becher-Weg 27, 55128 Mainz, Germany
Institut für Mineralogie, Corrensstraße 24, Universität Münster, D48149 Münster, Germany
T. C. Brachert
Institut für Geophysik und Geologie, Talstraße 35, Universität Leipzig, 04103 Leipzig, Germany
B. Stoll
Max-Planck-Institut für Chemie, Joh.-Joachim-Becher-Weg 27, 55128 Mainz, Germany
U. Weis
Max-Planck-Institut für Chemie, Joh.-Joachim-Becher-Weg 27, 55128 Mainz, Germany
O. Kullmer
Forschungsinstitut und Naturmuseum Senckenberg, Senckenberganlage 25, 60325 Frankfurt, Germany
I. Ssemmanda
Geology Department, Makerere University, P.O. Box 7062, Uganda
D. F. Mertz
Institut für Geowissenschaften, Johannes Gutenberg-Universität Mainz, Joh.-Joachim-Becher-Weg 21, 55099 Mainz, Germany
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H. Baumgarten, T. Wonik, D. C. Tanner, A. Francke, B. Wagner, G. Zanchetta, R. Sulpizio, B. Giaccio, and S. Nomade
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Gamma ray (GR) fluctuations and K values from downhole logging data obtained in the sediments of Lake Ohrid correlate with the global climate reference record (LR04 stack from δ18O) (Lisiecki and Raymo, 2005). GR and K values are considered a reliable proxy to depict glacial-interglacial cycles and document warm, humid and cold, drier periods. A robust age model for the downhole logging data over the past 630kyr was established and will play a crucial role for other working groups.
M. L. Chipman, V. Hudspith, P. E. Higuera, P. A. Duffy, R. Kelly, W. W. Oswald, and F. S. Hu
Biogeosciences, 12, 4017–4027, https://doi.org/10.5194/bg-12-4017-2015, https://doi.org/10.5194/bg-12-4017-2015, 2015
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Tundra fires may have increased as a result of anthropogenic climate change. To evaluate this hypothesis in the context of natural variability, we reconstructed fire history of the late Quaternary in the Alaskan tundra. Fire-return intervals are spatially variable, ranging from 1648 to 6045 years at our sites. The rarity of historical fires implies that increased fire frequency may greatly alter the structure and function of tundra ecosystems.
Y. F. Yao, X. Y. Song, A. H. Wortley, S. Blackmore, and C. S. Li
Biogeosciences, 12, 1525–1535, https://doi.org/10.5194/bg-12-1525-2015, https://doi.org/10.5194/bg-12-1525-2015, 2015
L. A. Sullivan and J. F. Parr
Biogeosciences, 10, 977–980, https://doi.org/10.5194/bg-10-977-2013, https://doi.org/10.5194/bg-10-977-2013, 2013
Cited articles
Bahati, G., Pang, Z., Ármannsson, H., Isabirye, E. M., and Kato, V.: Hydrology and reservoir characteristics of three geothermal systems in western Uganda, Geothermics, 34, 568–591, 2005.
Balter, V.: Allometric constraints on Sr/Ca and Ba/Ca partitioning in terrestrial mammalian trophic chains, Oecologia, 139, 83–88, https://doi.org/10.1007/s00442-003-1476-0, 2004.
Balter, V. and Lécuyer, C.: Determination of Sr and Ba partition coefficients between apatite and water from 5°C to 60°C: A potential new thermometer for aquatic paleoenvironments, Geochim. Cosmochim. Acta, 68, 423–432, 2004.
Balter, V. and Lécuyer, C.: Determination of Sr and Ba partition coefficients between apatite from fish (sparus aurata) and seawater: The influence of temperature, Geochim. Cosmochim. Acta, 74, 3449–3458, 2010.
Balter, V., Bocherens, H., Person, A., Labourdette, N., Renard, M., and Vandermeersch, B.: Ecological and physiological variability of Sr/Ca and Ba/Ca in mammals of west european Mid-Würmian food webs, Palaeogeogr. Palaeoclimatol., 186, 127–143, 2002.
Betzler, C. and Ring, U.: Sedimentology of the Malawi rift: Facies and stratigraphy of the Chiwondo Beds, northern Malawi, Journal of Human Evolution, 28, 23–35, 1995.
Beuning, K. R. M., Talbot, M. R., and Kelts, K.: A revised 30,000-year paleoclimatic and paleohydrologic history of Lake Albert, East Africa, Palaeogeogr. Palaeoclimatol., 136, 259–279, 1997.
Blum, J. D., Taliaferro, E. H., Weisse, M. T., and Holmes, R. T.: Changes in Sr/Ca, Ba/Ca and 87Sr/86Sr ratios between trophic levels in two forest ecosystems in the northeastern U.S.A., Biogeochemistry, 49, 87–101, https://doi.org/10.1023/a:1006390707989, 2000.
Bobe, R., Alemseged, Z., Behrensmeyer, A. K., Sandrock, O., Kullmer, O., Schrenk, F., Juwayeyi, Y. M., and Bromage, T. G.: Fauna, taphonomy, and ecology of the Plio-Pleistocene Chiwondo Beds, northern Malawi, in: Hominin environments in the East African Pliocene: An assessment of the faunal evidence, Vertebrate paleobiology and paleoanthropology, Springer Netherlands, 315–332, 2007.
Boisserie, J.-R. and Merceron, G.: Correlating the success of hippopotaminae with the C4 grass expansion in Africa: Relationship and diet of early Pliocene hippopotamids from Langebaanweg, South Africa, Palaeogeogr. Palaeoclimatol., 308, 350–361, 2011.
Boisserie, J.-R., Zazzo, A., Merceron, G., Blondel, C., Vignaud, P., Likius, A., Mackaye, H. T., and Brunet, M.: Diets of modern and Late Miocene hippopotamids: Evidence from carbon isotope composition and micro-wear of tooth enamel, Palaeogeogr. Palaeoclimatol., 221, 153–174, 2005.
Boskey, A. L.: Mineralization of bones and teeth, Elements, 3, 385–391, https://doi.org/10.2113/gselements.3.6.385, 2007.
Brachert, T., Brügmann, G., Mertz, D., Kullmer, O., Schrenk, F., Jacob, D., Ssemmanda, I., and Taubald, H.: Stable isotope variation in tooth enamel from Neogene hippopotamids: Monitor of meso and global climate and rift dynamics on the Albertine Rift, Uganda, Int. J. Earth Sci., 99, 1663–1675, https://doi.org/10.1007/s00531-010-0518-1, 2010.
Branchu, P., Bergonzini, L., Ambrosi, J.-P., Cardinal, D., Delalande, M., Pons-Branchu, E., and Benedetti, M.: Hydrochemistry (major and trace elements) of Lake Malawi (Nyasa), Tanzanian Northern Basin: local versus global considerations, Hydrol. Earth Syst. Sci. Discuss., 7, 4371–4409, https://doi.org/10.5194/hessd-7-4371-2010, 2010.
Brügmann, G. E., Brachert, T. C., Ssemmanda, I., and Mertz, D. F.: Chemical and isotope compositions of neogene Hippopotamidae teeth from Lake Albert (Uganda): Implications for environmental change, Eos trans. Agu, 89(53), Fall Meet. Suppl., Abstract pp11d-01, 2008.
Brügmann, G., Krause, J., Brachert, T. C., Kullmer, O., Schrenk, F., Ssemmanda, I., and Mertz, D. F.: Chemical composition of modern and fossil Hippopotamid teeth and implications for paleoenvironmental reconstructions and enamel formation – Part 1: Major and minor element variation, Biogeosciences, 9, 119–139, https://doi.org/10.5194/bg-9-119-2012, 2012.
Burton, J. H., Price, T. D., and Middleton, W. D.: Correlation of bone Ba/Ca and Sr/Ca due to biological purification of calcium, Journal of Archaeological Science, 26, 609–616, 1999.
Cameron, E. M., Hall, G. E. M., Veizer, J., and Krouse, H. R.: Isotopic and elemental hydrogeochemistry of a major river system: Fraser River, British Columbia, Canada, Chemical Geology, 122, 149–169, 1995.
Cerling, T. E., Harris, J. M., Hart, J. A., Kaleme, P., Klingel, H., Leakey, M. G., Levin, N. E., Lewison, R. L., and Passey, B. H.: Stable isotope ecology of the common hippopotamus, J. Zool., 276, 204–212, https://doi.org/10.1111/j.1469-7998.2008.00450.x, 2008.
Chansa, W., Milanzi, J., and Sichone, P.: Influence of river geomorphologic features on hippopotamus density distribution along the Luangwa River, Zambia, African Journal of Ecology, 49, 221–226, https://doi.org/10.1111/j.1365-2028.2010.01252.x, 2011a.
Chansa, W., Senzota, R., Chabwela, H., and Nyirenda, V.: The influence of grass biomass production on hippopotamus population density distribution along the Luangwa River in Zambia, Journal of Ecology and the Natural Environment, 3, 186–194, 2011b.
Dalai, T. K., Krishnaswami, S., and Sarin, M. M.: Barium in the Yamuna River system in the Himalaya: Sources, fluxes, and its behavior during weathering and transport, Geochem. Geophys. Geosyst., 3, 1076, https://doi.org/10.1029/2002gc000381, 2002.
Dalai, T. K., Krishnaswami, S., and Kumar, A.: Sr and 87Sr/86Sr in the Yamuna River system in the Himalaya: Sources, fluxes, and controls on Sr isotope composition, Geochim. Cosmochim. Acta, 67, 2931–2948, 2003.
Dechamps, R. and Ergo, A.: Palaeovegetation (fossil plants) of the Albertine Rift Valley, in: Geology and palaeobiology of the Albertine Rift Valley, Uganda - Zaire, vol. Ii: Palaeobiology, edited by: Sénut, B., and Pickford, M., Cifeg publication occasionelle, Centre International pour la Formation et les Echanges Geologiques, Orléans Cedex 2, 29–45, 1994.
Domingo, L., Grimes, S. T., Soler-Gijón, R., and López-Martínez, N.: Analysis of the geochemical variability in lepisosteid scales from the Fontllonga-3 site (Early Danian, Tremp Formation, South Central Pyrenees, Spain): Implications for palaeoenvironmental studies, Palaeogeogr. Palaeoclimatol., 274, 204–214, 2009.
Dupre, B., Gaillardet, J., Rousseau, D., and Allegre, C. J.: Major and trace elements of river-borne material: The Congo Basin, Geochim. Cosmochim. Acta, 60, 1301–1321, 1996.
Elias, R. W., Hirao, Y., and Patterson, C. C.: The circumvention of the natural biopurification of calcium along nutrient pathways by atmospheric inputs of industrial lead, Geochim. Cosmochim. Acta, 46, 2561–2580, 1982.
Elsdon, T. S. and Gillanders, B. M.: Temporal variability in strontium, calcium, barium, and manganese in estuaries: Implications for reconstructing environmental histories of fish from chemicals in calcified structures, Estuar. Coast. Shelf Sci., 66, 147–156, 2006.
Eltringham, S. K. and Barrett, P.: The hippos, A{&}C Black, 2010.
Gaillardet, J., Dupré, B., Allègre, C. J., and Négrel, P.: Chemical and physical denudation in the Amazon River Basin, Chemical Geology, 142, 141–173, 1997.
Garzanti, E., Andò, S., France-Lanord, C., Vezzoli, G., Censi, P., Galy, V., and Najman, Y.: Mineralogical and chemical variability of fluvial sediments: 1. Bedload sand (Ganga-Brahmaputra, Bangladesh), Earth Planet. Sc. Lett., 299, 368–381, 2010.
Garzanti, E., Andò, S., France-Lanord, C., Censi, P., Vignola, P., Galy, V., and Lupker, M.: Mineralogical and chemical variability of fluvial sediments 2. Suspended-load silt (Ganga-Brahmaputra, Bangladesh), Earth Planet. Sc. Lett., 302, 107–120, 2011.
Hanor, J. S.: Barite-celestine geochemistry and environments of formation, Reviews in Mineralogy and Geochemistry, 40, 193–275, https://doi.org/10.2138/rmg.2000.40.4, 2000.
Harris, J. M., Cerling, T. E., Leakey, M. G., and Passey, B. H.: Stable isotope ecology of fossil hippopotamids from the Lake Turkana Basin in East Africa, J. Zool., 275, 323–331, https://doi.org/10.1111/j.1469-7998.2008.00444.x, 2008.
Hirao, Y. and Patterson, C. C.: Lead aerosol pollution in the High Sierra overrides natural mechanisms which exclude lead from a food chain, Science, 184, 989–992, https://doi.org/10.1126/science.184.4140.989, 1974.
Hoppe, K. A., Koch, P. L., and Furutani, T. T.: Assessing the preservation of biogenic strontium in fossil bones and tooth enamel, International Journal of Osteoarchaeology, 13, 20–28, 2003.
Jochum, K. P., Stoll, B., Herwig, K., and Willbold, M.: Improvement of in situ Pb isotope analysis by LA-ICP-MS using a 193 nm Nd:Yag laser, Journal of Analytical Atomic Spectrometry, 21, 666–675, 2006.
Jochum, K. P., Stoll, B., Herwig, K., and Willbold, M.: Validation of LA-ICP-MS trace element analysis of geological glasses using a new solid-state 193 nm Nd:Yag laser and matrix-matched calibration, Journal of Analytical Atomic Spectrometry, 22, 112–121, 2007.
Kieffer, B., Arndt, N., Lapierre, H., Bastien, F., Bosch, D., Pecher, A., Yirgu, G., Ayalew, D., Weis, D., Jerram, D. A., Keller, F., and Meugniot, C.: Flood and shield basalts from Ethiopia: Magmas from the African superswell, Journal of Petrology, 45, 793–834, https://doi.org/10.1093/petrology/egg112, 2004.
Kohn, M. J.: Models of diffusion-limited uptake of trace elements in fossils and rates of fossilization, Geochim. Cosmochim. Acta, 72, 3758–3770, 2008.
Koch, P. L., Halliday, A. N., Walter, L. M., Stearley, R. F., Huston, T. J., and Smith, G. R.: Sr isotopic composition of hydroxyapatite from recent and fossil salmon: The record of lifetime migration and diagenesis, Earth Planet. Sc. Lett., 108, 277–287, 1992.
Kronberg, B. I., Nesbitt, H. W., and Fyfe, W. S.: Mobilities of alkalis, alkaline earths and halogens during weathering, Chem. Geol., 60, 41–49, 1987.
Kunsch, K. and Kunsch, S.: Der Mensch in Zahlen, 3 ed., Spektrum Akademischer Verlag, Heidelberg, Berlin, 420 pp., 2006.
Land, M., Ingri, J., Andersson, P. S., and Öhlander, B.: Ba/Sr, Ca/Sr and 87Sr/86Sr ratios in soil water and groundwater: Implications for relative contributions to stream water discharge, Appl. Geochem., 15, 311–325, 2000.
Lear, C. H., Elderfield, H., and Wilson, P. A.: Cenozoic deep-sea temperatures and global ice volumes from Mg/Ca in benthic foraminiferal calcite, Science, 287, 269–272, https://doi.org/10.1126/science.287.5451.269, 2000.
Lee-Thorp, J. and Sponheimer, M.: Three case studies used to reassess the reliability of fossil bone and enamel isotope signals for paleodietary studies, Journal of Anthropological Archaeology, 22, 208–216, 2003.
Margolis, H. C., Beniash, E., and Fowler, C. E.: Role of macromolecular assembly of enamel matrix proteins in enamel formation, Journal of Dental Research, 85, 775–793, https://doi.org/10.1177/154405910608500902, 2006.
McCulloch, M. T., Gagan, M. K., Mortimer, G. E., Chivas, A. R., and Isdale, P. J.: A high-resolution Sr/Ca and δ18O coral record from the Great Barrier Reef, Australia, and the 1982–1983 El Nino, Geochim. Cosmochim. Acta, 58, 2747–2754, 1994.
McCulloch, M., Cappo, M., Aumend, J., and Müller, W.: Tracing the life history of individual barramundi using laser ablation MC-ICP-MS Sr-isotopic and Sr/Ba ratios in otoliths, Marine and Freshwater Research, 56, 637–644, https://doi.org/10.1071/MF04184, 2005.
Millard, A. R. and Hedges, R. E. M.: A diffusion-adsorption model of uranium uptake by archaeological bone, Geochim. Cosmochim. Acta, 60, 2139–2152, 1996.
Milton, D., Halliday, I., Sellin, M., Marsh, R., Staunton-Smith, J., and Woodhead, J.: The effect of habitat and environmental history on otolith chemistry of barramundi lates calcarifer in estuarine populations of a regulated tropical river, Estuar. Coast. Shelf Sci., 78, 301–315, 2008.
Nesbitt, H. W., Markovics, G., and price, R. C.: Chemical processes affecting alkalis and alkaline earths during continental weathering, Geochim. Cosmochim. Acta, 44, 1659–1666, 1980.
Nielsen, S. P.: The biological role of strontium, Bone, 35, 583–588, 2004.
Padoan, M., Garzanti, E., Harlavan, Y., and Villa, I. M.: Tracing Nile sediment sources by Sr and Nd isotope signatures (Uganda, Ethiopia, Sudan), Geochim. Cosmochim. Acta, 75, 3627–3644, 2011.
Pailler, D., Flicoteaux, R., Ambrosi, J.-P., and Médus, J.: Les bois Mio-Pliocènes de Nkondo (Llac Albert, Ouganda); composition minéralogique et mode de formation, Comptes Rendus de l'Academie des Sciences – Series IIA – Earth and Planetary Science, 331, 279–286, 2000.
Palmer, M. R. and Edmond, J. M.: The strontium isotope budget of the modern ocean, Earth Planet. Sc. Lett., 92, 11–26, 1989.
Pasteris, J. D., Wopenka, B., and Valsami-Jones, E.: Bone and tooth mineralization: Why apatite?, Elements, 4, 97–104, https://doi.org/10.2113/gselements.4.2.97, 2008.
Phillis, C. C., Ostrach, D. J., Ingram, B. L., and Weber, P. K.: Evaluating otolith Sr/Ca as a tool for reconstructing estuarine habitat use, Canadian Journal of Fisheries and Aquatic Sciences, 68, 360–373, https://doi.org/10.1139/f10-152, 2011.
Pickford, M., Senut, B., and Hadoto, D.: Geology and palaeontology of the Albertine Rift Valley, Uganda-Zaire, Publication Occasionelle, Centre International pour la Formation et les Echanges Geologiques, Orléans Cedex 2, 1–190, 1993.
Riebe, C. S., Kirchner, J. W., and Finkel, R. C.: Erosional and climatic effects on long-term chemical weathering rates in granitic landscapes spanning diverse climate regimes, Earth Planet. Sc. Lett., 224, 547–562, 2004.
Ring, U. and Betzler, C.: Geology of the Malawi Rift: Kinematic and tectonosedimentary background to the Chiwondo Beds, Northern Malawi, Journal of Human Evolution, 28, 7–21, 1995.
Robinson, C., Kirkham, J., Brookes, S. J., Bonass, W. A., and Shore, R. C.: The chemistry of enamel development, Int. J. Dev. Biol. , 39, 145–152, 1995.
Rudnick, R. L., Gao, S., Editors-in-Chief: Heinrich, D. H., and Karl, K. T.: 3.01 – composition of the continental crust, in: Treatise on geochemistry, Pergamon, Oxford, 1–64, 2003.
Sako, A., Sarkar, D., Datta, R., and Hannigan, R.: Chapter 7 geochemical cycling of trace and rare earth elements in Lake Tanganyika and its major tributaries, in: Developments in environmental sciences, Elsevier, 135–171, 2007.
Sandrock, O., Dauphin, Y., Kullmer, O., Abel, R., Schrenk, F., and Denys, C.: Malema: Preliminary taphonomic analysis of an African hominid locality, Comptes Rendus de l'Academie des Sciences – Series IIA – Earth and Planetary Science, 328, 133–139, 1999.
Schroeder, H. A., Tipton, I. H., and Nason, A. P.: Trace metals in man: Strontium and barium, Journal of Chronic Diseases, 25, 491–517, 1972.
Senut, B. and Pickford, M.: Geology and palaeobiology of the Albertine Rift Valley, Uganda-Zaire. Volume ii: Palaeobiology, in: Publication occasionnelle - centre international pour la formation et les echanges geologiques CIFEG Orléans, 1–423, 1994.
Shiller, A. M.: Dissolved trace elements in the Mississippi River: Seasonal, interannual, and decadal variability, Geochim. Cosmochim. Acta, 61, 4321–4330, 1997.
Sillen, A.: Elemental and isotopic analyses of mammalian fauna from Southern Africa and their implications for paleodietary research, American Journal of Physical Anthropology, 76, 49–60, 1988.
Sillen, A. and Lee-Thorp, J. A.: Trace element and isotopic aspects of predator-prey relationships in terrestrial foodwebs, Palaeogeogr. Palaeoclimatol., 107, 243–255, 1994.
Simmer, J. P., Papagerakis, P., Smith, C. E., Fisher, D. C., Rountrey, A. N., Zheng, L., and Hu, J. C.-C.: Regulation of dental enamel shape and hardness, J. Den. Res., 89, 1024–1038, https://doi.org/10.1177/0022034510375829, 2010.
Smith, C. E.: Cellular and chemical events during enamel maturation, Critical Reviews in Oral Biology & Medicine, 9, 128–161, https://doi.org/10.1177/10454411980090020101, 1998.
Smith, C. E. and Nanci, A.: Overview of morphological changes in enamel organ cells associated with major events in amelogenesis, Int. J. Dev. Biol., 39, 153–161, 1995.
Sponheimer, M. and Lee-Thorp, J. A.: Enamel diagenesis at South African australopith sites: Implications for paleoecological reconstruction with trace elements, Geochim. Cosmochim. Acta, 70, 1644–1654, 2006.
Talling, J. F. and Talling, I. B.: The chemical composition of African lake waters, Internationale Revue der gesamten Hydrobiologie und Hydrographie, 50, 421–463, https://doi.org/10.1002/iroh.19650500307, 1965.
Trauth, M. H., Maslin, M. A., Deino, A. L., Strecker, M. R., Bergner, A. G. N., and Dühnforth, M.: High- and low-latitude forcing of Plio-Pleistocene East African climate and human evolution, Journal of Human Evolution, 53, 475–486, 2007.
Trueman, C. N. G., Behrensmeyer, A. K., Tuross, N., and Weiner, S.: Mineralogical and compositional changes in bones exposed on soil surfaces in Amboseli National Park, Kenya: Diagenetic mechanisms and the role of sediment pore fluids, Journal of Archaeological Science, 31, 721–739, 2004.
Tütken, T., Vennemann, T. W., and Pfretzschner, H. U.: Early diagenesis of bone and tooth apatite in fluvial and marine settings: Constraints from combined oxygen isotope, nitrogen and REE analysis, Palaeogeogr. Palaeoclimatol., 266, 254–268, 2008.
Van Damme, D. and Pickford, M.: The Late Cenozoic thiaridae (mollusca, gastropoda, cerithioidea) of the Albertine Rift Valley (Uganda-Congo) and their bearing on the origin and evolution of the Tanganyikan thalassoid malacofauna, Hydrobiologia, 498, 1–83, https://doi.org/10.1023/a:1026298512117, 2003.
Wells, B. K., Bath, G. E., Thorrold, S. R., and Jones, C. M.: Incorporation of strontium, cadmium, and barium in juvenile spot (leiostomus xanthurus) scales reflects water chemistry, Canadian Journal of Fisheries and Aquatic Sciences, 57, 2122–2129, https://doi.org/10.1139/f00-178, 2000.
Wells, B. K., Rieman, B. E., Clayton, J. L., Horan, D. L., and Jones, C. M.: Relationships between water, otolith, and scale chemistries of westslope cutthroat trout from the Coeur d'Alene River, Idaho: The potential application of hard-part chemistry to describe movements in freshwater, Transactions of the American Fisheries Society, 132, 409–424, https://doi.org/10.1577/1548-8659(2003)132<0409:rbwoas>2.0.co;2, 2003.
Wester, P.: Magnesium, The American Journal of Clinical Nutrition, 45, 1305–1312, 1987.
White, A. F., Blum, A. E., Bullen, T. D., Vivit, D. V., Schulz, M., and Fitzpatrick, J.: The effect of temperature on experimental and natural chemical weathering rates of granitoid rocks, Geochim. Cosmochim. Acta, 63, 3277–3291, 1999.
Witherow, R. and Lyons, W. B.: The fate of minor alkali elements in the chemical evolution of salt lakes, Saline Systems, 7, 1–17, 2011.
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