caa a22 4500 469025999 CHVBK 20180323132730.0 cr unu---uuuuu 170328e19920601xx s 000 0 eng 10.1007/BF00717699 doi (NATIONALLICENCE)springer-10.1007/BF00717699 Sapozhnicov V. Institute of Fishery and Oceanography, Moscow aut Biohydrochemical causes of the changes of Black Sea ecosystem and its present condition [Elektronische Daten] [V. Sapozhnicov] The principal regularities of the biogenic elements distribution in Black Sea are discussed, particulary such labile compounds as ammonium, organic nitrogen, urea, aminoacids, organic phosphorous, other organic substances and also albumens, lipids and carbohydrates. The permanent growth of the contrations of phospates, nitrogen and silicon results from the construction of numerous hydroelectric power-stations on all the great rivers flowing to the Black Sea. Most of silicon is accumulated in the reservoirs where phytoplankton is rapidly developed, and instead of phospates and nitrates, organic compounds of these elements flow out to the sea. This has caused the essential transformation of the whole Black Sea ecosystem. Kluwer Academic Publishers, 1992 GeoJournal Kluwer Academic Publishers 27/2(1992-06-01), 149-157 0343-2521 27:2<149 1992 27 10708 https://doi.org/10.1007/BF00717699 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00717699 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Sapozhnicov V. Institute of Fishery and Oceanography, Moscow aut NATIONALLICENCE 773 0- GeoJournal Kluwer Academic Publishers 27/2(1992-06-01), 149-157 0343-2521 27:2<149 1992 27 10708 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer