Variable temperature effects between heterotrophic stream processes and organisms

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Variable temperature effects between heterotrophic stream processes and organisms

Jérémy Jabiol, Alice Gossiaux, Antoine Lecerf, Thibaut Rota, François Guérold, Michaël Danger, Pascal Poupin, Franck Gilbert, Éric Chauvet

To cite this version:

Jérémy Jabiol, Alice Gossiaux, Antoine Lecerf, Thibaut Rota, François Guérold, et al.. Variable

temperature effects between heterotrophic stream processes and organisms. Freshwater Biology, Wiley,

2020, 65 (9), pp.1543-1554. �10.1111/fwb.13520�. �hal-02512913�

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This is an author’s version published in: https://oatao.univ-toulouse.fr/26550

To cite this version:

Jabiol, Jérémy and Gossiaux, Alice and Lecerf, Antoine and Rota, Thibaut and Guérold, François and Danger, Michaël and Poupin, Pascal and Gilbert, Franck and Chauvet, Eric Variable temperature effects between heterotrophic stream processes and organisms.

(2020) Freshwater Biology, 65 (9). 1543-1554. ISSN 0046-5070 Open Archive Toulouse Archive Ouverte

Official URL :

https://doi.org/10.1111/fwb.13520

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| | | |

1EcoLab, Laboratoire écologie fonctionnelle

2

Jérémy Jabiol, EcoLab, Laboratoire écologie

Email: [email protected]

Gammarus, Potamophylax, and Sericostoma

c.

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|

c.

(5)

|

Corylus avellana

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c. SD

Flagellospora curvula, Articulospora tetracladia, Alatospora acuminata, and Tetrachaetum elegans

3

PO²⁻₄ μ NO⁻₃

3

ambient treatment,

SD, n ₃ addition of

natural

|

c.

3 depending on N

Gammarus fossarum

namely Sericostoma personatum Potamophylax

cingulatus Potamophylax

Sericostoma and Gammarus originated

c. Potamophylax,

Gammarus, and Sericostoma

|

3

2

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2 2

2

2 2

|

I I T_c I at 10°C, Ea

k ^–5

T T_c

entire temperature gradient.

overlap 0.

|

c.

ln (I)=ln[I(T_c)]

−Ea×(

1∕kT−1∕kT_c)

Mixing effect= (

Observed−Expected)

∕Expected

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|

p

SD SD

|

Gammarus: 2.5–9.1 mg;

Potamophylax Sericostoma

SE

: Gammarus, a : Potamophylax, a_S: Sericostoma, a p

(a) (b)

(c) (d)

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p p

c.

Sericostoma and

c.

Gammarus: p Sericostoma: p

Potamophylax p

|

into CO₂ p

(df (df (df

mg C/day 0.539

mg C mg litter /day Litter

N content

0.933

Gammarus

mg C mg invert.

/day Potamophylax

mg C mg invert.

/day

0.109

Sericostoma

mg C mg invert.

/day

mg C mg invert.

/day Note:

p in bold.

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SE, n

(a) (b) (c)

(d) (e)

SE, n

gradient in different N availability

8 10 12 14

Temperature (°C)

8 10 12 14

Temperature (°C)

Ltter N concentraton (% Ltter DM)

Funga bomass (% Ltter DM) ₈ 4 5 6 7

2.0

1.6 1.8

1.4

(a) (b)

[N] = 1.41 mg/L [N] = 0.71 mg/L [N] = 2.81 mg/L

[N] = 2.11 mg/L

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in natura litter SE, n

– Gammarus

Potamophylax Sericostoma

– Note:

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Jérémy Jabiol Antoine Lecerf Michaël Danger Eric Chauvet

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did not overlap 0

(a) (b)

8 10 12 14

Temperature (°C)

1.0 1.5 2.0 2.5

Water N concentration (mg/l) 0.2

0.4 0.2 0.0

Speces mxng effect

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