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What are indoor microbial 
communities? 
An ecological approach 
Maria Nunez, PhD 
Mycoteam as, Norway 
www.mycoteam.no
ECOLOGY 
The scientific study of interactions 
among organisms 
and their environment 
Wikipedia
SLOAN SYMPOSIUMs motto 
The interaction between microbial communities 
and building materials 
needs far greater attention 
Corsi et al. Indoor Air 2012; 22: 171-172
What is dead /inactive? 
Dead microbes do not affect infrastructures 
Dead microbes are not pathogens (but allergens) 
What is active? 
Dampness promotes active microorganisms 
Dampness is associated with SBS 
Active microbes produce spores, toxins, MVOCs
6
8
9
10
11
INTEGRATED APPROACH 
• Morphology 
• DNA sequence 
• Life-history 
• Growth preferences 
• Chemistry 
• Epidemiology 
• Distribution 
• Abundance 
• Invasiveness
21
FINAL REMARKS 
CONCLUSIONS 
• Look at microbes as organisms, not as 
sequences 
• Know where you sample 
• Know why you sample (source/sink?) 
• Don’t ignore hidden building structures 
• Keep the Gremlings dry!
What are microbial communities? An ecological approach

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What are microbial communities? An ecological approach

  • 1. What are indoor microbial communities? An ecological approach Maria Nunez, PhD Mycoteam as, Norway www.mycoteam.no
  • 2. ECOLOGY The scientific study of interactions among organisms and their environment Wikipedia
  • 3. SLOAN SYMPOSIUMs motto The interaction between microbial communities and building materials needs far greater attention Corsi et al. Indoor Air 2012; 22: 171-172
  • 4. What is dead /inactive? Dead microbes do not affect infrastructures Dead microbes are not pathogens (but allergens) What is active? Dampness promotes active microorganisms Dampness is associated with SBS Active microbes produce spores, toxins, MVOCs
  • 5.
  • 6. 6
  • 7.
  • 8. 8
  • 9. 9
  • 10. 10
  • 11. 11
  • 12.
  • 13.
  • 14.
  • 15.
  • 16.
  • 17.
  • 18.
  • 19.
  • 20. INTEGRATED APPROACH • Morphology • DNA sequence • Life-history • Growth preferences • Chemistry • Epidemiology • Distribution • Abundance • Invasiveness
  • 21. 21
  • 22. FINAL REMARKS CONCLUSIONS • Look at microbes as organisms, not as sequences • Know where you sample • Know why you sample (source/sink?) • Don’t ignore hidden building structures • Keep the Gremlings dry!