Dr. Jari Syväranta

IGB, Dept.4,
Biology and Ecology of Fishes 
12587 Berlin, Müggelseedamm 310

Fields of Interests:

Stable isotopes and allochthonous C- and H-signatures

Tel: (030) 64 181 615
Fax: (030) 64 181 750

syvaeranta@igb-berlin.de

Secondary production, stable isotopes and matter flow between zooplankton, macroinvertebrates and fishes in shallow lakes and their coupling to the terrestrial surroundings.

Subproject 4 within the project TERRALAC (founded by WGL)

(In co-operation with: Kristin Scharnweber and Dr. Thomas Mehner)

We are going to analyse the coupling between aquatic and terrestrial ecosystems by allochthonous particulate organic carbon.in two shallow lakes, differing in their state between macrophyte or phytoplankton dominance. This subproject aims to measure secondary production, stable isotopes, matter flow and insect exchange between water and land. My specific task within the larger project is to develop methods and compare the stable isotopes of carbon and hydrogen in assessing the terrestrial subsidies in these lakes.

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Syväranta J., Cucherousset J., Kopp D., Crivelli A., Céréghino R. & Santoul F. 2010. Dietary breadth and trophic position of introduced European catfish (Silurus glanis) in the River Tarn (Garonne River basin), Southwest France. Aquatic Biology 8: 137-144. OpenAccess: http://www.int-res.com/articles/ab2009/8/b008p137.pdf

Ravinet M., Syväranta J., Jones R.I. & Grey J. 2010. A trophic pathway from biogenic methane supports fish biomass in a temperate lake ecosystem. Oikos (in press)

Kopp D., Syväranta J., Figuerola J., Compina A., Santoul F. & Céréghino R. 2009. Environmental effects related to the local absence of exotic fish. Biol. Conserv. 142: 3207-3212.

J. Syväranta & R. I. Jones. 2009. Isotopic variability in lake littoral organisms presents a challenge for food web studies. Verh. Internat. Verein. Limnol. 30(8): 1193-1196.

Kopp D., Cucherousset J., Syväranta J., Martino A., Céréghino R. & Santoul F. 2009. Trophic ecology of the pikeperch (Sander lucioperca) in its introduced areas: a stable isotope approach in southwestern France. CR Biol. 332: 741-746.

Syväranta J., Cucherousset J., Kopp D., Martino A., Céréghino R. & Santoul F. 2009. Contribution of anadromous fish to the diet of European catfish in a large river system. Naturwissenschaften 96: 631-635.

Syväranta J., Tiirola M. & Jones R. I. 2008. Seasonality in lake pelagic δ15N values: patterns, possible explanations, and implications for food web studies. Fundam. Appl. Limnol. (Arch. Hydrobiol.) 172: 255-262.

Syväranta J. & Jones R. I. 2008. Changes in feeding niche widths of perch and roach following biomanipulation, revealed by stable isotope analysis. Freshwater Biol. 53: 425-434.

Syväranta J., Vesala S., Rask M., Ruuhijärvi J. & Jones R. I. 2008. Evaluating the utility of stable isotope analyses of archived freshwater sample materials. Hydrobiologia 600: 121-130.

J. Syväranta, T. Keskinen, H. Hämäläinen, J. Karjalainen and R. I. Jones. 2008. Use of stable isotope analysis to evaluate the possible impact of fish migration on a lake biomanipulation. Aquatic Conserv: Mar. Freshw. Ecosyst. 18: 703-713.

Rask, M., Jones, R. I., Järvinen, M., Paloheimo, A., Salonen, M., Syväranta, J. & Verta, M. 2007. Changes in fish mercury concentrations over 20 years in an acidified lake subject to experimental liming. Appl. Geochem. 22: 1229-1240.

J. Syväranta, H. Hämäläinen and R. I. Jones. 2006. Within-lake variability in carbon and nitrogen stable isotope signatures. Freshwater Biol. 51: 1090-1102.

Syväranta, J., Grey, J., Jones, R.I., Rask, M. and Salonen, M. 2006. The contribution of trophic position to mercury content of pike (Esox lucius) in small boreal lakes. Verh. Internat. Verein. Limnol. 29: 1757-1761.

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