A field study of tundra plant litter decomposition rate via mass loss and carbon dioxide emission: The role of biotic and abiotic controls, biotope, season of year, and spatial-temporal scale
- 74 Downloads
Although many recently published original papers and reviews deal with plant matter decomposition rates and their controls, we are still very limited in our understanding of these processes in boreal and high latitude plant communities, especially in the permafrost areas of our planet. First and foremost, this is holds true for winter periods. Here, we present the results of two years of field observations in the southern taiga and southern shrub tundra ecosystems in European Russia. We pioneered the simultaneous application of two independent methods: classic mass loss estimation by the litter-bag technique and direct measurement of CO2 emission (respiration) of the same litter bags with different types of dead plant matter. Such an approach allows us to reconstruct the intraseasonal dynamics of the decomposition rates of the main tundra litter fractions with high temporal resolution, to estimate the partial role of different seasons and fragmentation in the process of plant matter decomposition, and to determine its factors under a different temporal scale.
KeywordsDecomposition Rate Litter Decomposition Plant Litter Biology Bulletin Review Southern Taiga
Unable to display preview. Download preview PDF.
- Arft, A.M., Walker, M.D., Gurevitch, J., et al., Responses of tundra plants to experimental warming: meta-analysis of the international tundra experiment, Ecol. Monogr., 1999, vol. 64, pp. 491–511.Google Scholar
- Edwards, A.C., Scalenghe, R., and Freppaz, M., Changes in the seasonal snow cover of alpine regions and its effect on soil processes: a review, Quat. Int., 2007, vol. 172, pp. 162–163.Google Scholar
- Karelin, D.V. and Zamolodchikov, D.G., Uglerodnyi obmen v kriogennykh ekosistemakh (Carbon Exchange in Cryogenic Ecosystems), Moscow: Nauka, 2008.Google Scholar
- Karelin, D.V., Zamolodchikov, D.G., Zukert, N.V., Chestnykh, O.V., Pochikalov, A.V., and Krayev, G.N., Interannual changes in PAR and soil moisture during the warm season may be more important for directing of annual carbon balance in tundra than temperature fluctuations, Zh. Obshch. Biol., 2013, vol. 74, no. 1, pp. 3–22.PubMedGoogle Scholar
- Koptsik, G.N., Smirnova, I.E., Livantsova, S.Yu., Koptsik, S.V., Zakharova, A.I., and Vostretsova, E.V., A role of the plant litter and bed in biological cycle of the elements in forest ecosystems of Zvenigorodskaya biological station, Tr. Zvenigorod. Biol. Stn., 2011, vol. 5, pp. 18–32.Google Scholar
- Thormann, M.N., Bayley, S.E., and Currah, R.S., Comparison of decomposition of belowground and aboveground plant litters in peatlands of boreal Alberta, Canada, Can. J. Bot., 2001, vol. 79, pp. 9–22.Google Scholar
- van Cleve, K., Organic matter quality in relation to decomposition, in Soil Organisms and Decomposition in Tundra, Holding, A.J., Heal, O.W., MacLean, S.F., Jr., and Flanagan, P.W., Eds., Stockholm: Tundra Biome Steering Committee, 1974, pp. 311–324.Google Scholar
- Wall, D.H., Bradford, M.A., John, M.G. St., et al., Global decomposition experiment shows soil animal impacts on decomposition are climate-dependent, Global Change Biol., 2008, vol. 14, pp. 2661–2677.Google Scholar