The Evolution of Pollution Evidenced by Lake Sediment Pseudofossils

摘要: ABSTRACT The micro-organisms that live within a lake are, in many cases, sensitive to changing environmental conditions and thus may be used as “indicator” organisms because there is general equilibrium between biotic community the environment. Any change environment will alter structure perhaps composition of community. Sediments accumulate basin are derived from sources result physical, chemical biological processes deposited, for most part, chronologically. remains which preserved accumulating sediment pseudofossils. majority pseudofossils seen sediments belong Cladocera (Crustacea) Chironomidae (Diptera). use these groups, together with other parameters especially phaeopigments, outlined this paper demonstrate how such study can provide evidence ecosystem.