Consumer allochthony in lakes (ALLOCARB)
Main funder
Funder's project number: 285619
Funds granted by main funder (€)
- 603 443,00
Funding program
Project timetable
Project start date: 01/09/2015
Project end date: 31/08/2019
Summary
Lakes can receive large inputs of terrestrial organic matter from their surrounding catchments, and this has been to proposed to act a cross-ecosystem subsidy to lake food webs (consumer allochthony). However, this proposal remains highly controversial, as some researchers maintain that the terrestrial detritus entering lakes is a poor quality resource of little value to consumer organisms in lakes.This project will use stable isotope analysis, and especially the relatively novel application of hydrogen isotope analysis, to trace the passage of terrestrial organic matter into lake consumers and quantify their dependence on this external organic matter source. Data will be collected from a wide range of lake types within Finland to analyse what determines the magnitude of consumer allochthony in different lakes. Through collaboration with leading international groups this analysis will be extended to a wider geographical range of lakes.
Principal Investigator
Primary responsible unit
Keywords (YSO)
Related publications and other outputs
- Assessing and predicting the influence of chromophoric dissolved organic matter on light absorption by phytoplankton in boreal lakes (2024) Ahonen, Salla A.; et al.; A1; OA
- Herbivorous cladoceran essential fatty acid and cholesterol content across a phosphorous and DOC gradients of boreal lakes : Importance of diet selection (2023) Keva, Ossi; et al.; A1; OA
- A Bayesian stable isotope mixing model for coping with multiple isotopes, multiple trophic steps and small sample sizes (2022) Heikkinen, Risto; et al.; A1; OA
- Allochthony, fatty acid and mercury trends in muscle of Eurasian perch (Perca fluviatilis) along boreal environmental gradients (2022) Keva, Ossi; et al.; A1; OA
