, Volume 718, Issue 1, pp 159–172

Variability of water temperature may influence food-chain length in temperate streams

  • Nicolas Hette-Tronquart
  • Jean-Marc Roussel
  • Bernard Dumont
  • Virginie Archaimbault
  • Didier Pont
  • Thierry Oberdorff
  • Jérôme Belliard
Primary Research Paper


Food-chain length (FCL) is commonly used in ecological investigations to gain insight into how ecosystems function. Several studies have investigated the mechanisms underlying FCL patterns, but none has specifically examined the effect of temperature variability. In river ecosystems, water temperature variability can modify community structure, individuals’ activity, and individuals’ physiological rates, among other things. As such, we expected that it would negatively influence FCL. To test this prediction, we took advantage of a dataset comprising five streams, which mainly differ according to their temperature variability. At each stream, we (i) studied the species composition of macroinvertebrates and fish, and using nitrogen and carbon stable isotopes, (ii) estimated realized FCL, and (iii) examined food web structure. For macroinvertebrates, but not for fish, species composition differed among sites displaying low and high temperature variability. FCL was negatively influenced by temperature variability. Confirming this trend, we found a highly significant linear relationship between FCL and temperature variability using data from the literature. As for food web structure, the trophic position of filter-feeders/shredders may explain the FCL differences among sites. Our study gives additional support to the “dynamic stability” hypothesis and advances a step further by suggesting that temperature variability alone may reduce FCL.


Stable isotopes Trophic position Food web Macroinvertebrates Salmo trutta Cottus gobio 

Supplementary material

10750_2013_1613_MOESM1_ESM.pdf (50 kb)
Supplementary material 1 (PDF 51 kb)


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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • Nicolas Hette-Tronquart
    • 1
  • Jean-Marc Roussel
    • 2
  • Bernard Dumont
    • 3
  • Virginie Archaimbault
    • 1
  • Didier Pont
    • 1
  • Thierry Oberdorff
    • 4
  • Jérôme Belliard
    • 1
  1. 1.Irstea, UR HBANAntonyFrance
  2. 2.INRA, UMR 985 “Ecologie et Santé des Ecosystèmes”RennesFrance
  3. 3.Irstea, UR HYAXAix-en-ProvenceFrance
  4. 4.UMR CNRS 7208-IRD 207-MNHN-UPMC “Biologie des Organismes et Ecosystemes Aquatiques”, DMPA, Museum National d’Histoire NaturelleParisFrance

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