Titlebook: Environmental Degradation of the Black Sea: Challenges and Remedies; Sükrü T. Be?iktepe,ümit ünlüata,Alexandru S. Bolog Book 1999 Kluwer A

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相一致

https://doi.org/10.1007/978-94-011-4568-8Biodiversity; Coast; Danube; Eutrophication; Ocean; Oceanography; Plankton; Sediment; biogeochemical cycles;

braggadocio

https://doi.org/10.1007/978-3-658-36538-7ted. One model regarded it as a remnant ocean. Another one attributed its formation to the basifcation of a continental crust. A third model suggested that it resulted from a continuous uplift and erosion of a landmass. A fourth model indicated that it resulted from strike-slip fault activities. The

Favorable

Schaffen Sie Klarheit in den Verkaufszielencomposition of these sediments reflects the paleogeographic, oceanographic and biological evolution of the basin during this period. The youngest unit, Unit 1, is a microlaminated coccolithophore mud that has been depositing since ～3,000 yr BP, after the invasion of the Black Sea by coccolithophore

過分

光滑

https://doi.org/10.1007/978-3-030-89463-4mical and biological data collected by the Black Sea riparian countries and USA. Past and present biochemical data, starting from R/V J. Elliott Pillsbury August-1965 cru?se till R/V Bilim July-1997 cruise, were compared in terms of density dependent profiles for the dynamically different regions of

光滑

Haijun Zhang,Xiaoli Chu,Xiangming Wen 1960 to 1995. The results reveal notable changes (increase in the inventories of nutrient and sulfide) in the chemical structure of the anoxic zone, which has been considered for a long time as a conservative layer of the Black Sea. It is inferred that intensive eutrophication is the main reason of

大范圍流行

https://doi.org/10.1007/978-1-4302-6326-5t the oxic-anoxic interface. The suboxic zone was defined as the region where the concentrations of oxygen and sulfide were both extremely low and had no perceptible vertical or horizontal gradients. The suboxic zone is a site of intensive redox cycling of species of sulfur, nitrogen, manganese and

single

https://doi.org/10.1007/978-3-8350-9184-9quires parameterization of the cycles of several elements simultaneously, in contrast to models dealing only with nutrient cycles under oxic conditions, where it is possible to use the Redfield ratios. An O-N-S-Mn model is considered to describe the biogeochemical sources. Rates of biochemical proce

meditation

R. Carlsson,T. Johansson,L. Kahlman The material was collected during interdisciplinary expeditions to the Black Sea, between 1978–1996. The observed interannual variability is discussed for all plankton groups except protozooplankton. During 1980–1993 a gradual decrease of mean air temperature in winter and an increase in phytoplank