Recently discovered new biospheric pelocontour function in the Black Sea reductive bathyal zone
Yuvenaly P. Zaitsev, Gennady G. Polikarpov
A.O. Kovalevsky Institute of Biology of the Southem Seas (IBSS), National Academy of Sciences of Ukraine, Pr. Nakhimova, 2, Sevastopol 99011, UKRAINE
Odessa Branch, A.O. Kovalevsky Institute of Biology of the Southem Seas (OB IBSS), National Academy of Sciences of Ukraine. 37 Pushkinska Street, Odessa 65125, UKRAINE
Two remarkable scientific events happened recently (Zaitsev, Polikarpov, Egorov et al., 2007, 2008) in the field of the newly developed deep-sea ecology and molismology of the hydrogen sulphide pelocontour in the Black Sea bathyal zone: discovery (in 2007) of viable spores of oxybionts in this aggressive zone against openly living oxybionts – those organisms which normally inhabit all three biocycles of the biosphere – the land, the fresh waters and the marine environment as well as Determination (in 2008) of the safe sojoum duration of the oxybionts’ spores by radioisotope dating in layers of the studied pelocontour sediment. Generalization and discussion of these events are presented.
Keywords: Biosphere, the Black Sea, pelocontour, hydrogensulphide bathyal zone (HSBZ), oxybionts, anoxybionts, living spores of oxybionts from the land, fresh waters and the sea, radioisotope dating, time of spores survival in the HSBZ