Skip to main content
Log in

Joint effects of temperature and litter quality on detritivore-mediated breakdown in streams

  • Research Article
  • Published:
Aquatic Sciences Aims and scope Submit manuscript

Abstract

Global warming causes concomitant changes in several environmental factors that often have synergistic effects on populations and ecosystem processes. We examined how increased water temperature and reduced litter quality affected a leaf-shredding detritivore’s performance and its effect on litter breakdown. Detritivores were exposed in microcosms at two temperatures (10 and 15 °C) and four categories of litter quality (based on nitrogen and condensed tannin concentrations). We hypothesized that (1) high-quality litter mixtures would breakdown faster, improving detritivore performance; (2) differences would occur regardless of which plant species in the mixture were preferentially consumed; and (3) litter quality effects on detritivore-mediated breakdown and performance would be intensified at higher temperatures. Unexpectedly, we found faster breakdown at intermediate litter quality and lower temperature. Additionally, we found cases of detritivore selection and rejection of different resources driven by litter traits other than nitrogen and tannin concentrations. Detritivore performance increased with temperature, regardless of litter quality. Our results support non-additive and unpredictable joint effects of temperature and litter quality, suggesting that these concomitant changes may affect stream functioning.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4

Similar content being viewed by others

References

Download references

Acknowledgements

We thank the members of the Global Litter Breakdown Experiments (GLoBE) network who helped with leaf collection, Veronica Ferreira for field and laboratory work advice, Igor Morais and Joana Sotaia for the field survey, and Cristina Grela Docal for leaf chemical analyses. The study was funded by start-up funds from the Doñana Biological Station (EBD-CSIC) and Ikerbasque to LB, the Fundação para a Ciência e Tecnologia (FCT) strategic project ID/MAR/04292/2013 granted to MARE (Portugal), a research fellowship from Universidade de Vigo to ALD, and Basque Government funds (IT302-16) to Jesús Pozo.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Andrea Landeira-Dabarca.

Electronic supplementary material

Below is the link to the electronic supplementary material.

Supplementary material 1 (DOCX 195 KB)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Landeira-Dabarca, A., Pérez, J., Graça, M.A.S. et al. Joint effects of temperature and litter quality on detritivore-mediated breakdown in streams. Aquat Sci 81, 1 (2019). https://doi.org/10.1007/s00027-018-0598-8

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s00027-018-0598-8

Keywords

Navigation