Phenoloxidase and peroxidase activities in Sphagnum-dominated peatland in a warming climate
نویسندگان
چکیده
منابع مشابه
Above- and belowground linkages in Sphagnum peatland: climate warming affects plant-microbial interactions.
Peatlands contain approximately one third of all soil organic carbon (SOC). Warming can alter above- and belowground linkages that regulate soil organic carbon dynamics and C-balance in peatlands. Here we examine the multiyear impact of in situ experimental warming on the microbial food web, vegetation, and their feedbacks with soil chemistry. We provide evidence of both positive and negative i...
متن کاملExperimental warming differentially affects microbial structure and activity in two contrasted moisture sites in a Sphagnum-dominated peatland.
Several studies on the impact of climate warming have indicated that peat decomposition/mineralization will be enhanced. Most of these studies deal with the impact of experimental warming during summer when prevalent abiotic conditions are favorable to decomposition. Here, we investigated the effect of experimental air warming by open-top chambers (OTCs) on water-extractable organic matter (WEO...
متن کاملDynamics of Viral Abundance and Diversity in a Sphagnum-Dominated Peatland: Temporal Fluctuations Prevail Over Habitat
Viruses impact microbial activity and carbon cycling in various environments, but their diversity and ecological importance in Sphagnum-peatlands are unknown. Abundances of viral particles and prokaryotes were monitored bi-monthly at a fen and a bog at two different layers of the peat surface. Viral particle abundance ranged from 1.7 x 10(6) to 5.6 x 10(8) particles mL(-1), and did not differ b...
متن کاملMolybdenum-based diazotrophy in a Sphagnum peatland in northern Minnesota.
Microbial N2 fixation (diazotrophy) represents an important nitrogen source to oligotrophic peatland ecosystems, which are important sinks for atmospheric CO2 and susceptible to changing climate. The objectives of this study were: (i) to determine the active microbial group and type of nitrogenase mediating diazotrophy in a ombrotrophic Sphagnum-dominated peat bog (the S1 peat bog, Marcell Expe...
متن کاملVascular plants promote ancient peatland carbon loss with climate warming
Northern peatlands have accumulated one third of the Earth's soil carbon stock since the last Ice Age. Rapid warming across northern biomes threatens to accelerate rates of peatland ecosystem respiration. Despite compensatory increases in net primary production, greater ecosystem respiration could signal the release of ancient, century- to millennia-old carbon from the peatland organic matter s...
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ژورنال
عنوان ژورنال: Soil Biology and Biochemistry
سال: 2012
ISSN: 0038-0717
DOI: 10.1016/j.soilbio.2011.11.011