Simulated nitrogen deposition causes a decline of intra- and extraradical abundance of arbuscular mycorrhizal fungi and changes in microbial community structure in northern hardwood forests
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Ecosystems. 13(5): 683-695.
Increased nitrogen (N) deposition caused by human activities has altered ecosystem functioning and biodiversity. To understand the effects of altered N availability, we measured the abundance of arbuscular mycorrhizal fungi (AMF) and the microbial community in northern hardwood forests exposed to long-term (12 years) simulated N deposition (30 kg N ha-1 y-1) using phospholipid fatty acid (PLFA) analysis and hyphal in-growth bags. Intra- and extraradical AMF biomass and total microbial biomass were significantly decreased by simulated N deposition by 36, 41, and 24%, respectively.
Keywordsarbuscular mycorrhizal fungi; phospholipid fatty acid; nitrogen; mycelium; microbial community; sugar maple (Acer saccharum); forest; in-growth bags
van Diepen, Linda T.A.; Lilleskov, Erik A.; Pregitzer, Kurt S.; Miller, R. Michael. 2010. Simulated nitrogen deposition causes a decline of intra- and extraradical abundance of arbuscular mycorrhizal fungi and changes in microbial community structure in northern hardwood forests. Ecosystems. 13(5): 683-695. https://doi.org/10.1007/s10021-010-9347-0.