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Soil Biology & Biochemistry 38 (2006) 15371544 Elevated enzyme activities in soils under the invasive
 

Summary: Soil Biology & Biochemistry 38 (2006) 15371544
Elevated enzyme activities in soils under the invasive
nitrogen-fixing tree Falcataria moluccana
Steven D. Allisona,, Caroline Nielsenb
, R. Flint Hughesc
a
Department of Ecology and Evolutionary Biology, University of California, Irvine, Irvine, CA 92697, USA
b
Department of Geological and Environmental Sciences, Stanford University, Stanford, CA 94305, USA
c
Institute of Pacific Islands Forestry, USDA Forest Service, 23 East Kawili Street, Hilo, HI 96720, USA
Received 5 August 2005; received in revised form 6 October 2005; accepted 2 November 2005
Available online 26 January 2006
Abstract
Like other N-fixing invasive species in Hawaii, Falcataria moluccana dramatically alters forest structure, litterfall quality and quantity,
and nutrient dynamics. We hypothesized that these biogeochemical changes would also affect the soil microbial community and the
extracellular enzymes responsible for carbon and nutrient mineralization. Across three sites differing in substrate texture and age (50300
years old), we measured soil enzyme activities and microbial community parameters in native-dominated and Falcataria-invaded plots.
Falcataria invasion increased acid phosphatase (AP) activities to 490 mmol g1
soil h1

  

Source: Allison, Steven D. - Departments of Ecology and Evolutionary Biology & Earth System Science, University of California, Irvine

 

Collections: Environmental Sciences and Ecology