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

Linda T.A. van Diepen; Erik Lilleskov; Kurt S. Pregitzer; R. Michael Miller

doi:10.1007/s10021-010-9347-0

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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

Formally Refereed

Authors:

Linda T.A. van Diepen, Erik Lilleskov, Kurt S. Pregitzer, R. Michael Miller

Year:

2010

Type:

Scientific Journal

Station:

Northern Research Station

DOI:

https://doi.org/10.1007/s10021-010-9347-0

Source:

Ecosystems. 13(5): 683-695.

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Abstract

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.

Keywords

arbuscular mycorrhizal fungi, phospholipid fatty acid, nitrogen, mycelium, microbial community, sugar maple (Acer saccharum), forest, in-growth bags

Citation

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.