Short-term effects of nitrogen deposition on soil microbial biomass in Calluna heathlands NW Spain: critical loads

• Autorzy: Calvo-Fernandez J. , Marcos E. , Calvo L.
• Języki publikacji: EN

Abstrakty

EN

We evaluate the short-term effects of different N deposition loads on nutrient dynamic of soil microbial biomass in Cantabrian heathlands. A surplus of 10 kg N ha-1 yr-1 above N background deposition was required to increase soil microbial biomass N content in old Calluna heathlands, while a surplus of 20 kg N ha-1 yr-1 was required in young ones. The increase of atmospheric N deposition showed no change in soil microbial biomass C content. This caused a decrease in C:N ratio with the highest N deposition loads, being linked to a bacterial biomass dominance against fungal dominance.

• Wydawca: -
• Czasopismo: Ecological Questions
• Rocznik: 2015
• Tom: 21
• Opis fizyczny: p.65-66,fig.,ref.

Twórcy

autor

Calvo-Fernandez J.

• Area of Ecology, University of Leon, 24071 Leon, Spain

autor

Marcos E.

• Area of Ecology, University of Leon, 24071 Leon, Spain

autor

Calvo L.

• Area of Ecology, University of Leon, 24071 Leon, Spain

Bibliografia

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• Nielsen P.L., Andresen L.C., Michelsen A., Schmidt I.K. & Kongstad J., 2009, Seasonal variations and effects of nutrient applications on N and P and microbial biomass under two temperate heathland plants, Applied Soil Ecology, 42: 279–287.
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Identyfikatory

DOI

10.12775/EQ.2015.010