“…Dobrowolski et al, 2001;Bałaga, 2004Bałaga, , 2007aBałaga, , 2007bChambers and Charman, 2004;Ross-Barraclough et al, 2004). The use of multiple proxies for reconstruction of changes in hydrological and climate conditions is a commonly practised method in lake and peatland environment research (Digerfeldt, 1988;Willis et al, 1995;Issmer, 2009;Dobrowolski et al, 2010;Lamentowicz et al, 2011). This method provides the basis not only for the detailed reconstruction of ecosystem's ecology, hydrology or sedimentology, but also for the evaluation of regional and over-regional changes in environmental conditions.…”