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T1 Interactions of Biogeochemical Cycles in Aqueous Ecosystems Part 7 - Proceedings of a workshop arranged by the Scientific Committee on Problems of the Environment (SCOPE) and the United Nations Environment Programme (UNEP)
A1 United Nations Environment Programme, 
A2 Degens, Egon T.
A2 Kempe, Stephen
A2 Lein, Alla
A2 Sorokin, Yuri
K1 ecosystem
K1 Russia
K1 river
K1 lake
K1 marine area
K1 carbon dioxide
K1 Germany
YR 1988
FD 1988
LK https://wedocs.unep.org/handle/20.500.11822/29303
UL https://wedocs.unep.org/handle/20.500.11822/29303
NO The SCOPE/UNEP International program of Studies on the Biogeochemical Cycles has four principal subjects: Nitrogen, Phosphorus, Carbon and Sulphur. The study is being undertaken to find the major complex interactions between the cycles of these substances. The purpose is to demonstrate the resulting overall limits, which govern our lives and the future of mankind. The emerging climate changes caused by the greenhouse effect make it increasingly clear that our Earth is an integrated system. But environmental systems can be stretched by mankind's actions to limits at which changes in them can occur rapidly and perhaps irreversibly. It is possible that some of nature's thresholds are already being crossed.
DS UN Environment Document Repository
RD Sep 21, 2026