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The ecology of some mould genera indoors

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Several outdoor mould species can grow on building substrates and structures after a moisture damage. The indoor ecology of certain indicator taxa can help us to adress the scope and development of moisture episodes.
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Konsulenter innen sopp- og insektspørsmål. Biologiske bygningsskader. www.mycoteam.no Mycoteam as Indoor microbial ecology: Substrate and location preferences for Actinomycetes and 13 mould genera Maria Nunez Brisbane, July 2012
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Page 1: The ecology of some mould genera indoors

Konsulenter innen sopp- og insektspørsmål. Biologiske bygningsskader.

www.mycoteam.no

Mycoteam as

Indoor microbial ecology:

Substrate and location preferences for Actinomycetes and 13 mould genera

Maria Nunez

Brisbane, July 2012

Page 2: The ecology of some mould genera indoors
Page 3: The ecology of some mould genera indoors

Which site is susceptible to microbial contamination?

STOP THE CONTAMINATION AT ITS SOURCE!

Page 4: The ecology of some mould genera indoors
Page 5: The ecology of some mould genera indoors

Macroclimate

Microclimate

Material characteristics

Microbial biology

Microbial interactions

Page 6: The ecology of some mould genera indoors

RF 0-12 ºC 12-25 ºC

75-80 % Penicillium Aspergillus

80-90 % Aspergillus versicolor

Cladosporium

Ulocladium Alternaria

> 90 % Stachybotrys

Chaetomium

The most common genera indoors

Grant 1989

Page 7: The ecology of some mould genera indoors
Page 8: The ecology of some mould genera indoors

Cladosporium

Penicillium

Aspergillus

Actinomycetes

Chaetomium

Stachybotrys

Acremonium

Ulocladium

Ascotricha

Eurotium

Myxotrichum

Chrysosporium

Trichoderma

Hyalodendron

0 500 1000 1500 2000 2500

22%

15%

15%

11%

9%

7%

7%

6%

3%

1%

1%

1%

1%

1%

Page 9: The ecology of some mould genera indoors

SUBSTRATE (%)

Paint

Fibreboard

Chipboard

Vinyl/Linoleum

Concrete

Wind barrier

Wall paper

Gypsum board

Wood

Unknown

0 500 1000 1500 2000 2500 3000 3500 4000

0,7

2,4

3,7

3,8

5,8

6,5

6,8

10,6

27

32,7

Page 10: The ecology of some mould genera indoors

ROOM LOCATION (%)

Crawl space

Kitchen

Attic

Bathroom

Basement

Warm room

0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000

4,4

6

7,3

10,6

27,6

44,1

Page 11: The ecology of some mould genera indoors

CONSTRUCTION (%)

Wall against dry room

Window sill

Floor

Wall against wet room

Ceiling

Outer wall

0 1000 2000 3000 4000 5000 6000

0,3

2,7

11,5

12

19,2

54,2

Page 12: The ecology of some mould genera indoors

11032 collections (2001-2006) Location = room + construction

Concrete

Gypsum board

Others

Wind barrier

Wall paper

Wood

Acremonium substratesAttic, ceiling

Basement, ceiling

Basement, outer wall

Bathroom, wall against wet room

Crawl space, ceiling

Kitchen, wall against wet room

Warm room, ceiling

Warm room, floor

Warm room, outer wall

Others (<6%)

Acremonium locations

Page 13: The ecology of some mould genera indoors
Page 14: The ecology of some mould genera indoors
Page 15: The ecology of some mould genera indoors

Actinomycetes

On concrete (39,5%) and wood (23,7%) Outer wall in basements (57%)

Basement, ceiling

Basement, floor

Basement, outer wall

Bathroom, wall against wet room

Crawl space, ceiling

Kitchen, wall against wet room

Warm room, floor

Warm room, outer wall

Others (<6%)

Wind barrierConcreteFibreboardGypsum boardVinyl/linoleumWall paperWoodOthers

Page 16: The ecology of some mould genera indoors
Page 17: The ecology of some mould genera indoors
Page 18: The ecology of some mould genera indoors
Page 19: The ecology of some mould genera indoors

Ascotricha

On gypsum boards (41,2%) and wood (30,5%)

Insulated outer walls in basements (83,5%)

Attic, ceiling

Basement, outer wall

Crawl space, ceiling

Warm room, outer wall

Others (<6%)

Wind barrier

Chipboard

Concrete

Gypsum board

Wall paper

Wood

Others

Page 20: The ecology of some mould genera indoors

Aspergillus

Wood (35%) and wall paper (14,8%), but on all porous substrates

Outer walls (59%) in warm rooms (37%) and basements (22%)

Attic, ceiling

Basement, ceiling

Basement, floor

Basement, outer wall

Bathroom, wall against wet room

Crawl space, ceiling

Kitchen, wall against wet room

Warm room, ceiling

Warm room, floor

Warm room, outer wall

Others (<6%)

Wind barrierChipboardConcreteGypsum boardVinyl/linoleumWall paperWoodOthers

Page 21: The ecology of some mould genera indoors
Page 22: The ecology of some mould genera indoors
Page 23: The ecology of some mould genera indoors
Page 24: The ecology of some mould genera indoors

Penicillium

Many substrates, mainly wood (48%)

Mainly on outer walls in warm rooms (40%)

Attic, ceiling

Basement, ceiling

Basement, floor

Basement, outer wall

Bathroom, wall against wet room

Crawl space, ceiling

Kitchen, floor

Kitchen, wall against wet room

Warm room, ceiling

Warm room, floor

Warm room, outer wall

Others (<6%)

Wind barrier

Chipboard

Gypsum board

Vinyl/linoleum

Wall paper

Wood

Others

Page 25: The ecology of some mould genera indoors
Page 26: The ecology of some mould genera indoors

Chaetomium

On chipboard (30,6%) and wood (30%) Walls against wet rooms (31%)

Basement, ceiling

Basement, outer wall

Bathroom, floor

Bathroom, wall against wet room

Kitchen, floor

Kitchen, wall against wet room

Warm room, ceiling

Warm room, floor

Warm room, outer wall

Warm room, wall against wet room

Others (<6%)

Wind barrier

Chipboard

Gypsum board

Vinyl/linoleum

Wall paper

Wood

Others

Page 27: The ecology of some mould genera indoors
Page 28: The ecology of some mould genera indoors
Page 29: The ecology of some mould genera indoors

Chrysosporium

On wood (34%) and wind barriers (27%)On ceilings in cold places (64%), mainly basements (29%)

LOCATION

Attic, ceiling

Basement, ceiling

Basement, outer wall

Crawl space, ceiling

Warm room, ceiling

Warm room, outer wall

Others (<6%)

Wind barrierChipboardFibreboardWall paperWoodOthers

Page 30: The ecology of some mould genera indoors
Page 31: The ecology of some mould genera indoors
Page 32: The ecology of some mould genera indoors
Page 33: The ecology of some mould genera indoors
Page 34: The ecology of some mould genera indoors

Cladosporium

On wood in attics (89%) and concrete in basements (37,7 %)

On outer walls (57%) in warm rooms (36%) and basements (21%)

Attic, ceiling

Basement, ceiling

Basement, outer wall

Bathroom, ceiling

Bathroom, wall against wet room

Crawl space, ceiling

Warm room, ceiling

Warm room, outer wall

Warm room, window sill

Others (<6%)

Wind barrier

Concrete

Fibreboard

Gypsum board

Paint

Wall paper

Wood

Others

Page 35: The ecology of some mould genera indoors

Hyalodendron

On wood (93%) Mainly ceilings in cold attics (89%)

Attic, ceiling

Basement, ceiling

Basement, outer wall

Warm room, ceiling

Warm room, outer wall

ChipboardFibreboardWood

Page 36: The ecology of some mould genera indoors
Page 37: The ecology of some mould genera indoors
Page 38: The ecology of some mould genera indoors

Myxotrichum

On wind barriers (58%) and wood (30%)

In basements and crawl spaces (61%), mainly inside isolated outer walls in basements (36%)

Basement, ceiling

Basement, outer wall

Bathroom, floor

Bathroom, wall against wet room

Crawl space, ceiling

Warm room, ceiling

Warm room, floor

Warm room, outer wall

Others (<6%)

Wind barrierConcreteWoodOthers

Page 39: The ecology of some mould genera indoors
Page 40: The ecology of some mould genera indoors
Page 41: The ecology of some mould genera indoors

Stachybotrys

On gypsum boards in bathrooms (64,7%) Walls against wet rooms (39%)

Basement, ceiling

Basement, outer wall

Bathroom, floor

Bathroom, wall against wet room

Kitchen, floor

Kitchen, wall against wet room

Warm room, ceiling

Warm room, floor

Warm room, outer wall

Others (<6%)

Wind barrier

Gypsum board

Vinyl/linoleum

Wall paper

Wood

Others

Page 42: The ecology of some mould genera indoors
Page 43: The ecology of some mould genera indoors
Page 44: The ecology of some mould genera indoors

Trichoderma

On wood (51%) and woodboards (23%)Mainly on outer walls and floors in warm rooms (58%)

Attic, ceiling

Basement, outer wall

Bathroom, ceiling

Bathroom, wall against wet room

Kitchen, wall against wet room

Warm room, ceiling

Warm room, floor

Warm room, outer wall

Others (<6%)

ChipboardFibreboardGypsum boardWall paperWoodOthers

Page 45: The ecology of some mould genera indoors
Page 46: The ecology of some mould genera indoors

Ulocladium

Mainly on gypsum board (32%) and wall paper (26%)

On outer walls (74%), mainly in warm rooms (60%)

Basement, outer wall

Bathroom, ceiling

Bathroom, wall against wet room

Kitchen, wall against wet room

Warm room, ceiling

Warm room, floor

Warm room, outer wall

Others (>6%)

Wind barrierConcreteFibreboardGypsum boardWall paperWoodOthers

Page 47: The ecology of some mould genera indoors

STOP GROWTH AT ITS SOURCE

USE MICROORGANISMS AS INDICATORS OF WATER CASUALTIES

BETTER INDOOR AIR


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