University of Michigan
Department of Geological Sciences
1100 N University Avenue
Ann Arbor, MI 48109-1063
Email:
jdblum@umich.edu
Research Interests:
Blum's research group studies geochemical controls on the structure and function of ecosystems, as well as trace elements and isotope geochemistry across the field of Earth and Environmental Sciences. Blum's recent research has focused on understanding the chemistry of mercury in aquatic, terrestrial and atmospheric systems. Blum and his research group have developed methods for utilizing mercury stable isotopes in ecology and environmental geochemistry. Other areas of scientific inquiry that Blum has studied include the petrogenesis of igneous rocks, mineral weathering and its effect on global climate, arsenic and lead in groundwater and soils, and the effects of acid deposition and atmospheric dust on nutrient cycling in forests.
Hubbard Brook Publications by this Author
. 2021. “Increased Carbon Capture By A Silicate-Treated Forested Watershed Affected By Acid Deposition”. Biogeosciences 18(1): 169 - 188. https://bg.copernicus.org/articles/18/169/2021/.
. 2019. “Controls Of Methylmercury Bioaccumulation In Forest Floor Food Webs”. Environmental Science & Technology 53(5): 2434 - 2440. https://doi.org/10.1021/acs.est.8b06053.
. 2016. “Fine Root Biomass Declined In Response To Restoration Of Soil Calcium In A Northern Hardwood Forest”. Canadian Journal of Forest Research (ja). http://www.nrcresearchpress.com/doi/abs/10.1139/cjfr-2015-0434.
. 2014. “Determinants Of Survival Over 7 Years For A Natural Cohort Of Sugar Maple Seedlings In A Northern Hardwood Forest”. Canadian Journal of Forest Research 44(9): 1112 - 1121. http://www.nrcresearchpress.com/doi/abs/10.1139/cjfr-2014-0177.
. 2014. “Rates Of Sustainable Forest Harvest Depend On Rotation Length And Weathering Of Soil Minerals”. Forest Ecology and Management 318: 194 - 205. http://www.sciencedirect.com/science/article/pii/S0378112714000140.
. 2014. “Soil Chemical Dynamics After Calcium Silicate Addition To A Northern Hardwood Forest”. Soil Science Society of America Journal 78(4). https://dl.sciencesocieties.org/publications/sssaj/abstracts/78/4/1458.
. 2013. “Restoring Soil Calcium Reverses Forest Decline”. Environmental Science & Technology Letters. http://dx.doi.org/10.1021/ez400033d.
. 2012. “Determination Of Foliar Ca/sr Discrimination Factors For Six Tree Species And Implications For Ca Sources In Northern Hardwood Forests.”. Plant and Soil 356: 303 - 314.
. 2012. “Foliar Nutrient Concentrations Related To Soil Sources Across A Range Of Sites In The Northeastern United States”. Soil Science Society of America Journal 76(2). https://www.soils.org/publications/sssaj/abstracts/76/2/674.
. 2012. “The Quantitative Soil Pit Method For Measuring Belowground Carbon And Nitrogen Stocks”. Soil Science Society of America Journal In Press.
. 2012. “Watershed-Level Responses To Calcium Silicate Treatment In A Northern Hardwood Forest”. Ecosystems 15(3): 416 - 434. ://WOS:000303601800005.
. 2011. “Landscape Response And Solute Fluxes In Soil Solution And Stream Water In A Calcium-Treated Watershed In The Northeastern United States”. Ecosystems 15: 416 - 434.
. 2011. “Litter Layers (O-Ie) As A Calcium Source Of Sugar Maple Seedlings In A Northern Hardwood Forest”. Canadian Journal of Forest Research-Revue Canadienne De Recherche Forestiere 41(4): 898 - 901. ://WOS:000291185700022.
. 2010. “Patterns Of Ca/sr And Sr-87/sr-86 Variation Before And After A Whole Watershed Casio3 Addition At The Hubbard Brook Experimental Forest, Usa”. Geochimica Et Cosmochimica Acta 74(11): 3129 - 3142. ://WOS:000277348300006.
. 2010. “Spatial Variability Of Long-Term Chemical Weathering Rates In The White Mountains, New Hampshire, Usa”. Geoderma 154(3-4): 294 - 301. ://WOS:000275009400016.
. 2008. “Mineral Sources Of Calcium And Phosphorus In Soils Of The Northeastern Usa”. Soil Science Society of America Journal 72(6): 1786–1794.
. 2008. “Use Of Foliar Ca/sr Discrimination And 87Sr/86Sr Ratios To Determine Soil Ca Sources To Sugar Maple Foliage In A Northern Hardwood Forest”. Biogeochemistry 87: 287-296.
. 2007. “A Sequential Extraction To Selectively Dissolve Apatite For Determination Of Soil Nutrient Pools With An Application To Hubbard Brook Experimental Forest, New Hampshire, Usa”. Applied Geochemistry 22: 2406–2421.
. 2007. “Terrestrial Gastropod Responses To An Ecosystem-Level Calcium Manipulation In A Northern Hardwood Forest”. Can. J. Zool. 85: 994-1007.
. 2006. “The Relative Uptake Of Ca And Sr Into Tree Foliage Using A Whole-Watershed Calcium Addition”. Biogeochemistry 80(1): 21 - 41. http://link.springer.com/10.1007/s10533-005-6008-z.
. 2006. “The Relative Uptake Of Ca And Sr Into Tree Foliage Using A Whole-Watershed Calcium Addition”. Biogeochemistry 80(1): 21-41.
. 2005. “New Insights Into Calcium Depletion In Northeastern Forests”. J. Forestry 103(1): 14-20.
. 2004. “Dissolution Of Wollastonite During The Experimental Manipulation Of Hubbard Brook Watershed 1”. Biogeochemistry 67(3): 309-329.
. 2004. “Influence Of Landscape Position And Vegetation On Long-Term Weathering Rates At The Hubbard Brook Experimental Forest, New Hampshire, U.s. A.”. Geochimica Et Cosmochimica Acta 68(14): 3065-3078.
. 2003. “Biotic Control Of Calcium Cycling In Northern Hardwood Forests: Acid Rain And Aging Forests”. Ecosystems 6(4): 399-406.
. 2003. “The Source And Transport Of Srsenic In A Bedrock Aquifer, New Hampshire, Usa”. Applied Geochemistry 18(11): 1773-1787.
. 2003. “Tracing Hydrologic Flow Paths In A Small Forested Watershed Using Variations In 87Sr/86Sr, [Ca]/[Sr], [Ba]/[Sr] And 18O”. Water Resources Research 39(10): 1282.
. 2002. “Mycorrhizal Weathering Of Apatite As An Important Calcium Source In Base-Poor Forest Ecosystems”. Nature 417: 729-731.
. 2001. “Determining The Sources Of Calcium For Migratory Songbirds Using Stable Strontium Isotopes”. Oecologia 126: 569-574.
. 2001. “Eggshell Characteristics And Calcium Demands Of A Migratory Songbird Breeding In Two New England Forests”. Wilson Bull. 113(1): 94-100.
. 2001. “A Watershed-Scale Measured Dissolution Rate For Wollastonite”. Abstract for annual Goldschmidt Geochemistry Conference.
. 2000. “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.
. 2000. “Concentration-Discharge Relationships During Storm Events At The Hubbard Brook Experimental Forest, Usa”. Eos 81(48): F465.
. 2000. “A Watershed-Scale Silicate Weathering Experiment”. Abstract for GSA Meeting.
. 1999. “Tracing Groundwater Flowpaths During A Storm Event Using 87Sr/86Sr Ratios”. Minerological Magazine (Goldschmidt Conference).
. 1998. “Boron Isotopic Variation In Streamwater From A Forested Catchment”. GSA Abstracts with Programs 30(6):277.
. 1997. “The Use Of Isotope Tracers For Identifying Populations Of Migratory Birds”. Oecologia 109: 132-141.
. 1994. “Linking The Breeding And Wintering Grounds Of Long-Distance Migrant Bird Populations: The Use Of Stable And Radiogenic Isotope Ratios”. Abstract for 112th Annual Meeting, American Ornithologists' Union, Univ. Montana.