Ashback, Project group meeting 27-29 May 2015
Wednesday
12.30
lunch
13.30
WP2 intro.
Mette Hansen 1
14.00
Alberto Maresca 2
14.30
WP2 summary Morten
15.00
break
15.30
WP1 summary Mads 3
16.00
Maiken Lundstad Nielsen 4 (plant growth, metal uptake, Gedhus soil)
16.30
Nikolaj Lunding Kindtler 5 (plan, plant growth, metal uptake, Gedhus and Foulum soil)
17.00
Jiayi Qin-1 (microarthropods in field experiment)
17.30
Louise Hindborg Mortensen/Regin Rønn6 (food web, Gedhus soil)
18.00
Marie Louise Bornø (ash and N2O versus soil type)
18.30
dinner
Thursday
9.00
Carla Cruz Paredes-1 7 (mycorrhiza, Gedhus and Foulum)
9.30
Anders Scheel Sinding 8 (Bacteria, Foulum)
10.00
WP4 summary Regin 6
10.30
break
11.00
Jiayi Qin-2 9 (collembola, ecotox ash and pH)
11.30
Carla Cruz Paredes-2 10 (fungi (saprotrophs, mycorrhiza) Cd and pH effects)
12.00
stop
12.30
lunch
13.30
Toke Andreassen 11 (genes, Foulum og Gedhus, ±ash)
14.00
Sara Benzon Tilia/Flemming Ekelund (soil organisms, ash effects)
14.15
WP3 summary Flemming 12
14.45
Coming duties not dealt with yet. WP leaders, see project plan (next page).
15.30
break
16.00
Criteria for allowing more ash in fields/plantations, introduction 13 (material attached)
16.20
Group work, selection of ash effects to use when judging allowance of more ash 14-17.
17.20
Plenum, criteria
18.00
stop
18.30
dinner
Friday
9.00
Søren Christensen (gases in Gedhus) 18
9.30
WP5 summary Carsten Suhr Jacobsen/ Søren Christensen 19
10.00
break
10.30
more practical cooperation?
11.30
12.30
steering group meeting
lunch, end
WP1 Heavy metals in ash and environment Mads Hovmand
 Database on existing heavy metal analyses finished (M6).
 Heavy metal analyses of organisms and soil accomplished(M48)
 Heavy metal contents in ash from Herningværket determined (M18).
WP2 Field study Morten Ingerslev
 Field experiments established (M10).
 Sampling and analysis of field experiment completed (M48)
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not relevantMetal mobility and sorption characterised in model experiments (M42).
 Conclusion on heavy metal leaching based on field and model studies (M45).
WP3 Ecotoxicology Flemming Ekelund
 Literature review completed (M9)
 Ecotoxicology studies on protozoa completed (M30)
 Ecotoxicology studies on soil animals completed (M30)
 Dose-response relationships for ash effects on fungal growth available (M30)
 PIXE analysis of Cd location along mycorrhizal root systems complemented (M36)
 Plant germination and growth as affected by ash determined (M30)
 Improved ashes tested on protozoa, soil animals, and plants (M48)
WP4 Food web, accumulation-export Regin Rønn
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Fungal in-growth mesh bags installed at the field sites (M9);
Analysis of initial food web structure in field sites completed (M18)
Analysis of food web structure affected by ash in field sites completed (M48)
Mesocosm experiments for establishment of relationship between Cd accumulation and 15N
signature completed (M36)
Analysis of Cd accumulation and 15N/13C status in hyphae of saprotrophic and mycorrhizal fungi,
as well as roots completed (M48)
Measurement of Cd in organisms from field sites completed (M52)
Final evaluation of the extent of bioaccumulation in organisms for use in assessment of risk of
heavy metal export (WP5) (M55).
WP5 Ecosystem services Carsten Suhr Jacobsen
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Litter traps and root inclusion nets installed (M9).
 Measurements of two season of litter fall and root production completed (M42).
 Analysis of lignocellulytic enzymes in ash amended soils completed (M48).
 Carbon sequestration assessed and evaluated (M48).
 Greenhouse gasses assessed and modelled (M36).
 Estimation of Cd export to birds and mammals, based on bioaccumulation assessed (WP4) (M58).
Criteria for allowing more ash to soil
Direct toxic effects
- Effects of heavy metals on plants and soil organisms.
- Increased Cd in edible fungi and berries.
Direct pollution effects
- Increased leaching of Cd and other toxic heavy metals.
- Increased accumulation of heavy metals in the upper organic soil.
- Increased Cd and other toxic heavy metals in organisms eaten (e.g.
birds, beetles) thereby mediating export of pollution.
Ecosystem functioning
- Increased nutrient levels in the forest floor soil
- Increased decomposition of soil organic matter and thus reduced
carbon sequestration.
- Altered composition of the soil microbiota.
- Soil fauna species appearing.
- Soil fauna species disappearing.
- Increased emission of trace gases to the atmosphere.
- Increased run-off of nitrate and other elements/nutrients to groundwater.
- Altered pH in the upper soil layers.
- Altered tree nutrient status.
- Altered tree growth rates.
Nature quality
- Change diversity of plants, fungi and animals.