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Exothermic processes in industrial-scale piles of chipped pine-wood are linked to shifts in gamma-, alphaproteobacterial and fungal ascomycete communities

  • Fast growing softwood species such as pine are preferred for biomass-based heat as well as electricity production and stored in large quantities. A newly established outdoor pile of freshly cut pine-wood chips was monitored to analyze exothermic processes. Inside the pile, a mean temperature increase of up to 44 °C was measured after six days of piling which was paralleled by a decrease of O2-concentration and an increase of CO2-concentration. Thereafter four additional CO2 maxima were observed, while O2-concentration remained at ambient concentration. The fungal community structure remained almost unchanged after four weeks, while the bacterial community structure was characterized by continuous shifts over time. The rapid heating in the early stage of storage corresponded to high relative abundance of microbial strains belonging to the genera Pseudomonas, Luteibacter and Caulobacter, ascomycetous genera Sphaeropsis and Cadophora and basidiomycetous order Polyporales and genusFast growing softwood species such as pine are preferred for biomass-based heat as well as electricity production and stored in large quantities. A newly established outdoor pile of freshly cut pine-wood chips was monitored to analyze exothermic processes. Inside the pile, a mean temperature increase of up to 44 °C was measured after six days of piling which was paralleled by a decrease of O2-concentration and an increase of CO2-concentration. Thereafter four additional CO2 maxima were observed, while O2-concentration remained at ambient concentration. The fungal community structure remained almost unchanged after four weeks, while the bacterial community structure was characterized by continuous shifts over time. The rapid heating in the early stage of storage corresponded to high relative abundance of microbial strains belonging to the genera Pseudomonas, Luteibacter and Caulobacter, ascomycetous genera Sphaeropsis and Cadophora and basidiomycetous order Polyporales and genus Sistotremastrum. The late stage was composed by a broader diversity of microorganisms, and heating processes inside the wood pile were attributed mainly to physicochemical processes. Taken together, these observations suggest that the early bacterial and fungal communities are key players in exothermic processes and were replaced by a broader diversity of highly adapted microorganisms.zeige mehrzeige weniger

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Metadaten
Autor*innen:Matthias Noll, Annette Naumann, Fabio Ferrero, Marcus Malow
Dokumenttyp:Zeitschriftenartikel
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):International biodeterioration & biodegradation
Jahr der Erstveröffentlichung:2010
Verlag:Elsevier
Verlagsort:Barking
Jahrgang/Band:64
Ausgabe/Heft:7
Erste Seite:629
Letzte Seite:637
Freie Schlagwörter:16S rRNA gene; Bacteria; Fungi; ITS; Pine-wood storage; Self-heating; Succession; T-RFLP
DOI:10.1016/j.ibiod.2010.07.002
ISSN:0964-8305
Verfügbarkeit des Dokuments:Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")
Bibliotheksstandort:Sonderstandort: Publica-Schrank
Datum der Freischaltung:19.02.2016
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:04.10.2010
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