Gilles Pinay - Save the Blue Heart of Europe Pinay... · 2019. 10. 24. · [email protected]....

Rivers want to break free

Gilles PinayRiverLy, Lyon, France

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Δ1

4 C-D

OC

Bu

tma

n e

t a

l. 2

01

4U

SG

S 2

01

5

Ph

osp

ha

te E

xtr

actio

n (

Mt)

Els

er

an

d B

en

nett

20

11

Ag

e d

ecre

ase

Vitu

ose

k e

t a

l. 1

99

7

Fritz Haber Carl Bosch

Context: Human alteration of C,N,P cycles

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Gruber & Galloway , Nature 2008

Consequences


Seitzinger et al. 2006

Nitrogen processing and retention


Tabacchi et al. 1998 Tabacchi et al. 1998


Pinay et al. 1995 & 2000

0

10

20

30

40

0 20 40 60 80 100 120

Soil silt + clay (%)

Den

itri

fica

tio

n(N

g m

-2 m

on

th-1

)

Pinay et al., Biogeochemistry, 1995 & 2000


« no river needs more than one bed »

Rhine River transformation 1842-1876

Johann Gottfried Tulla


EW

EW 2

KGT

KW

ST

EW

EW 2

KGT

KW

ST

N2 / N20

0

10

20

30

STKWKGTEW2EWUL1

N2

/ N

2O

Potential denitrification

0

1

2

3

4

5

6

STKWKGTEW2EWUL1

N (

µg

/g/h

)

- +Degree of connectivityDegree of connectivity

-

+

Danube River Welti et al. Ecological Engineering, 2012Tritthart et al. Environmental Modelling & Software, 2011

0

4

8

12

16

100 200 300 400 500

N µ

g l-1

mn

-1

denitrification

biological uptake

y = -0.0008Ln(x) + 0.0041r2 = 0.686

Groundwater travel time (minutes)

Pinay et al. River Research and Application, 2009

Serre-Ponçon, France


Cole et al. 2007

Datry et al. 2018

Carbon processing and retention


Gruber & Galloway , Nature 2008

Conclusion


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Thank youfor your attention

Gilles Pinay - Save the Blue Heart of Europe Pinay... · 2019. 10. 24. · [email protected]....

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