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Presented by: Mona Nazari Coordinator: Ptof. Dr. Heinrich Speicker Supervisor: Dr. Dominik Stangler Advisor: Elena Larysch Applied Period June-Aug _2018 Cambium phenology of Fir, Pine and European beech along different altitudinal gradient 1

Cambium phenology of Fir, Pine and European beech along … · Research Aims Is there a difference in the timing of the onsets between the species? Is there a difference in the timing

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Page 1: Cambium phenology of Fir, Pine and European beech along … · Research Aims Is there a difference in the timing of the onsets between the species? Is there a difference in the timing

Presented by: Mona NazariCoordinator: Ptof. Dr. Heinrich Speicker

Supervisor: Dr. Dominik StanglerAdvisor: Elena Larysch

Applied PeriodJune-Aug _2018

Cambium phenology of Fir, Pine and European beech along different altitudinal gradient

1

Page 2: Cambium phenology of Fir, Pine and European beech along … · Research Aims Is there a difference in the timing of the onsets between the species? Is there a difference in the timing

Research Aims

Is there a difference in the timing of the onsets between the species?

Is there a difference in the timing of the onsets along the height gradient?

2

Page 3: Cambium phenology of Fir, Pine and European beech along … · Research Aims Is there a difference in the timing of the onsets between the species? Is there a difference in the timing

Location – Black Forest

Plot Height a.s.l.(m)

Mean annualprecipitation (mm)

Mean annual airtemp. (°C)

Gradient 1 GUE1 450m 1123 10.2

WOL2 675m 1532 9.4

HOL3 950m 1716 6.8

SIL4 1225m 1516 6.4

Gradient 2 SÖL1 475m 1221 9.5

ULR2 700m 1312 8.9

BEL3 875m 1465 8.2

KEL4 1150m 1709 7.2

temperature

prec

ipitat

ion

450 m a.s.l.

1250 ma.s.l.

1

23

4

firpinebeech

3

Material

Page 4: Cambium phenology of Fir, Pine and European beech along … · Research Aims Is there a difference in the timing of the onsets between the species? Is there a difference in the timing

Sample collecting

3 tree species

3 trees per species

8 plots with similar soil types66 treesBetween 60 and 90 years old

Fagus sylvatica,

Abies alba

Pinus sylvestris

4

Material

Page 5: Cambium phenology of Fir, Pine and European beech along … · Research Aims Is there a difference in the timing of the onsets between the species? Is there a difference in the timing

Sampling with Trephor

5

Method

•Every week up to 10 days (started on 22.03.2018)

•on breast height (2,10-2,30)

•on the left and right side of the trunk (Perpendicular (90 degrees)to the slope direction)

•The microcores were stored in 50% Ethanol /Aqua dest.Solution in the fridge

Page 6: Cambium phenology of Fir, Pine and European beech along … · Research Aims Is there a difference in the timing of the onsets between the species? Is there a difference in the timing

Preparation of microcores to thin section

6

Preparation for embedding

Dehydrate the microcores

Infiltrate the microcores with Technovit

Embedding

Microtome - making thin sections

Method

CHANGE LEVEL AGITATIONVACUUM

Page 7: Cambium phenology of Fir, Pine and European beech along … · Research Aims Is there a difference in the timing of the onsets between the species? Is there a difference in the timing

Thin section

7

• Finding fiber direction• Cutting by microtome (10-15 μm1)

• Stain with cresyl violet (3-5 minutes)

• Top the thin section with glycerol

Method

Page 8: Cambium phenology of Fir, Pine and European beech along … · Research Aims Is there a difference in the timing of the onsets between the species? Is there a difference in the timing

Cambium Cells

8

Result

Page 9: Cambium phenology of Fir, Pine and European beech along … · Research Aims Is there a difference in the timing of the onsets between the species? Is there a difference in the timing

Cambium activity in Abies alba

9

1) Phloem Enlargment cells

Result

2) Xylem Enlargment cells 3) Developing secondary cell wall

Page 10: Cambium phenology of Fir, Pine and European beech along … · Research Aims Is there a difference in the timing of the onsets between the species? Is there a difference in the timing

Cambium activity in Pinus sylvestris

10

Result

1) Phloem Enlargment cells 2) Xylem Enlargment cells 3) Developing secondary cell wall

Page 11: Cambium phenology of Fir, Pine and European beech along … · Research Aims Is there a difference in the timing of the onsets between the species? Is there a difference in the timing

Cambium activity in Fagus sylvatica

11

Result

1) Phloem Enlargment cells 2) Xylem Enlargment cells 3) Developing secondary cell wall

Page 12: Cambium phenology of Fir, Pine and European beech along … · Research Aims Is there a difference in the timing of the onsets between the species? Is there a difference in the timing

Cambium activity

12

Result

Secondry cell wall wall thickening cells (mature cells no more expanding)

Normal picture Polarized light picture

Page 13: Cambium phenology of Fir, Pine and European beech along … · Research Aims Is there a difference in the timing of the onsets between the species? Is there a difference in the timing

Onset of cambial activity in the 3 species

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Result

Page 14: Cambium phenology of Fir, Pine and European beech along … · Research Aims Is there a difference in the timing of the onsets between the species? Is there a difference in the timing

onset of radial growth along the height gradient

14

Result

Source of soil and air tempreture: GWD (German Weather Service)

Page 15: Cambium phenology of Fir, Pine and European beech along … · Research Aims Is there a difference in the timing of the onsets between the species? Is there a difference in the timing

Outlook

15

Whether adaptation can be effective on onset of radial growth considering climate change or not?

Page 16: Cambium phenology of Fir, Pine and European beech along … · Research Aims Is there a difference in the timing of the onsets between the species? Is there a difference in the timing

Thank you for your attention

16


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