Elemental and isotopic perspectives on the impact of arbuscular mycorrhizal and ectomycorrhizal fungi on mineral weathering across imposed geologic gradients
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- 作者：K.A. Remiszewskia ; kaj64@wildcats.unh.edu" class="auth_mail" title="E-mail the corresponding author ; J.G. Brycea ; M.F. Fahnestocka ; E.A. Pettitta ; 1 ; J. Blichert-Toftb ; M.A. Vadeboncoeurc ; S.W. Baileyd
- 关键词：Arbuscular mycorrhizal fungi ; Ectomycorrhizal fungi ; Biological weathering ; Strontium isotope ; Lead isotope ; Mesh in-growth bags
- 刊名：Chemical Geology
- 出版年：2016
- 出版时间：16 December 2016
- 年：2016
- 卷：445
- 期：Complete
- 页码：164-171
- 全文大小：755 K
文摘
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Field experiments were conducted to assess arbuscular mycorrhizal (AM) and ectomycorrhizal (EcM) weathering.
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Mesh in-growth bags with different lithologies were deployed in temperate forest stands dominated by AM- or EcM-symbioses.
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Mg, P, and Ca contents and Pb and Sr isotopic compositions were measured in resulting leachates after 100-day deployment.
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Only Ca concentrations were significantly different between treatments, with AM plot bags yielding higher concentrations.
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Major element concentrations paired with isotopic ratios suggest similar dissolution reactions occurring in both sites.