排序方式: 共有2条查询结果,搜索用时 15 毫秒
1
1.
J. P. Selifonova 《Russian Journal of Ecology》2009,40(7):510-515
Ecosystem structure and functioning have been studied in the polluted water area of the Novorossiysk port. It has been shown
that communities of phytoplankton, zooplankton, ichthyoplankton, and zoobenthos are inhibited because of chronic exposure
to anthropogenic stress. The food web is disturbed, and microheterotrophs (bacteria and protists) are the main functional
component of the ecosystem. Water eutrophication and sulfide pollution of bottom sediments are the main factors responsible
for ecosystem degradation in the port of Novorossiysk. 相似文献
2.
Seasonal and long-term dynamics of heterotrophic plankton in the Bay of Novorossiisk are discussed. It is shown that specific variation in the biomass of nanoheterotrophs and infusoria is associated with the processes of anthropogenic water eutrophication. The biomass of infusoria has increased ten times and that of zooflagellates two times since 1985–1986. Infusoria of the genera Strombidium, Strobilidium, and Mesodiniumare dominant in the protozoan plankton. The annual average level of Oligotrichadevelopment in the bay is characteristic of eutrophic water bodies (112–417 mg/m3); in the spring–summer season, however, it may increase to 500–1034 mg/m3. In the part of the bay near the port, which is exposed to a strong anthropogenic impact, the biomass of ciliate protozoa can reach 2 g/m3. 相似文献
1