RECIPE meeting June 5-6 Th Tampere, FINLAND Group « Organic Matter in water, sols, sediments and...
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Transcript of RECIPE meeting June 5-6 Th Tampere, FINLAND Group « Organic Matter in water, sols, sediments and...
RECIPE meetingJune 5-6Th Tampere,
FINLAND
Group « Organic Matter in water, sols, sediments and rocks »
« Earth Science Institute of Orleans », France UMR 6531 of CNRS – University of Orleans
Institut des Sciences de la Terre d’Orléans:ISTO
Analyses made in Orleans since November 2003
Site Country
Situation-CoreReplica
teLeco/CNS
Micromorpho.analyses
Frottis Observation
Wet sievin
g
Sugars
LE RUSSE
Y
Jura
France
Bare peat
FR A
1 X X
2 X X
3 X X X X X
1st regeneration stage
FR B
1 X X
2 X X
3 X X
2nd regeneration
stage FR C
1 X X
2 X X
3 X X X
Intact area
FR D
1 X X
2 X X X X
3 X X
Analyses made in Orleans since November 2003
Site Country
Situation-Core
Replicate
Leco/CNS
Micromorpho.analyses
Frottis Observation
Wet sievin
g
Sugars
LA CHAUXD’ABEL
Jura
Switzerland
Fen
CH A
1 X
2 X
3 X X
4 X
Transition area
CH B
1 X
2 X
3 X
4 X
BogCH C
1 X
2 X X
3 X
4 X
Intact area
CH D
1 X X
2 X
3 X
Analyses made in Orleans since November 2003
Site Country
Situation-Core
Replicate
Leco/CNS
Micromorpho.analyses
Frottis Observation
Wet sievin
g
Sugars
BAUPTE
Cotentin
France
Peat Eriophorum angustifoliu
m
FB A
1 X X X
2 X X
3 X X
Bare peat
FB B
1 X X
2 X X
3 X X X
VEGETATION
2 samples Eriophorum vaginatum (stems+leaves) & roots)
X
Eriophorum angustifolium X
Carex rostrata (stems + leaves) X
2 samples Polytrichum (stems + leaves) & (rhizoids)
X
Sugars
Analyses made in Orleans since November 2003
Site Country
Situation-Core
Replicate
Leco/CNS
Micromorpho.analyses
Frottis Observation
Wet sievin
g
Sugars
SCOTLAND
Bare peat
SC A
1 X
2 X
3 X
1st regeneration stage
SC B
1 X
2 X
3 X X X
2nd regeneration stage
SC C
1 X
2 X
3 X
Mixed vegetation
SC D
1 X
2 X
3 X
Analyses made in Orleans since November 2003
Site Country
Situation-Core
Replicate
Leco/CNS
Micromorpho.analyses
Frottis Observation
Wet sievin
g
Sugars
FINLAND
Wet peatE.vaginatum
FI A
1 X
2 X X X
3 X
Dry peatE.vaginatum
FI B
1 X X X
2 X
3 X
Wet peatC.rostrata
FI C
1 X
2 X X X
3 X
Wet peatS.fallaxFI D
1 X
2 X
3 X
Bare peatFI E
1 X
2 X
3 X X X
Wet sieving (200 µm) Experiment
(Gobat J.-M, Grosvernier P., Matthey Y. and Buttler A., 1991)
→Grain size > 200µm: 48 h at 105°C
→Grain size < 200µm & > 50µm: 48 h at 105°C
→Grain size < 50µm: decantation and centrifugation
DOC
Grain size <200µm - C/N ratiosLE RUSSEY
FRA replicate 3
bare peat
FRC replicate 3 2nd regen.stage
FRD replicate 2
intact area
Total sugar content: Cyperaceae (Eriop.+Carex) ≈ 282 à 350 mg/g sample Mosses (Polyt+Sphagnum) ≈ 360 à 410 mg/g sample
Sugar analyses Biomarkers of organic sources
ArabinoseXyloseCyperaceae
MannosePolytrichum
GalactoseRhamnoseSphagnum
Bulk analyses - C/N ratios SCOTLAND
2nd regen.stage: SC C E.Angustifolium & few vaginatum
Mixed vegetation: SC DSphagnum,Polytrichum, Molinie & Calune
Grain size <200µm - C/N ratiosLa CHAUX D’ABEL
CHA replicate 2
fen
CHC replicate 1
bog
CHD replicate 1
Intact area Bulk Bulk Bulk
Grain size <200µm - C/N ratiosBAUPTE
FBA replicate 1
peat+E.angust.
FBB replicate 3
bare peat Bulk Bulk
Numbers of samples in Orleans
MISSING SAMPLES: slice 3 (0-5cm), slice 4 (5-10cm), slice 5 (12.5-17.5cm)
Le Russey: - 1st regeneration stage: FRB 31, FRB 32, FRB 33 - 2nd regeneration stage: FRC 31, FRC 41, FRC 32, FRC 33 - Intact area: FRD 31, FRD 41, FRD 32, FRD 33
La Chaux d’Abel: - fen: CHA 31, CHA 51, CHA 33, CHA 34 - transition area: CHB 31, CHB 32, CHB 43 - bogs: CHC 32, CHC 42, CHC 33, CHC 34 - Intact area: CHD 31, CHD 41, CHD 32, CHD 42, CHD 33, CHD 43
Baupte: - peat Eriophorum angustifolium: FBA 33
11
17
1
Initially: 198 samples [6 slices (15CH + 12FR + 6FB)] → 169