geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Periodization of anthropogenically determined evolution of steppe ecosystems


, : Periodization of anthropogenically determined evolution of steppe ecosystems. Ekologiya (Moscow) 0(5): 17-25

The evolution of the vegetation cover caused by anthropogenic factors was analyzed in northern Black Sea area. The dynamics of the intensity of humus formation, biogeochemical transformations, and soil erosion were presented. The main evolutionary phases that lasted 2600, 7500, 90-110 and 40 years were identified. These phases reflect the polyclimax nature of steppe ecosystems.

US$29.90


Other references

Lisboa, T.; Seligman, R.; Diaz, E.; Rodriguez, A.; Teixeira, P.J.Z.; Rello, J., 2007: C-reactive protein correlates with bacterial load and appropriate antibiotic therapy in suspected ventilator-associated pneumonia. Pain is the clinical hallmark of sickle cell disease (SCD). Vasoocclusive pain events (VOEs) are the primary cause of morbidity and account for most emergency department visits and hospitalizations for patients with SCD in the United States and Eu...

Wiewel, M.A.; Huson, Mëla.A.; van Vught, L.A.; Hoogendijk, A.J.; Klein Klouwenberg, P.M.C.; Horn, J.; Lutter, Ré.; Cremer, O.L.; Schultz, M.J.; Bonten, M.J.; van der Poll, T.; de Beer, F.M.; Bos, L.D.J.; Frencken, J.F.; Glas, G.J.; van Hooijdonk, R.T.M.; Ong, D.S.Y.; Schouten, L.R.A.; Scicluna, B.P.; Straat, M.; Witteveen, E.; Wieske, L., 2016: Impact of HIV infection on the presentation, outcome and host response in patients admitted to the intensive care unit with sepsis; a case control study. Critical Care 20(1): 322-322

Cercone K.R., 1989: Evaporative sea-level drawdown in the Silurian Michigan Basin; reply. Geology (Boulder) 17(2): 196

Crowe, J.E.; Gilmour, P.S.; Murphy, B.R.; Chanock, R.M.; Duan, L.; Pomerantz, R.J.; Pilkington, G.R., 1998: Isolation of a second recombinant human respiratory syncytial virus monoclonal antibody fragment (Fab RSVF2-5) that exhibits therapeutic efficacy in vivo. A second human respiratory syncytial virus (RSV)-neutralizing monoclonal antibody was isolated and its binding site was identified. Fab F2-5 is a broadly reactive fusion (F) protein-specific recombinant Fab generated by antigen selection from a ra...

Huang A M.; Zhou D Q., 1990: Formation of ursodeoxycholic acid by microbial bioconversion. Methods for the bioconversion of chenodeoxycholic acid to UDCA (ursodeoxycholic acid) especially recent progress concerning anaerobes are reported.

Gewalt W., 1979: A new species of dolphin in delphinidae the caribbean dolphin sotalia guinensis. A species introduced into Central Europe in 1977, was provisionally designated the Guiana dolphin, S. guianensis, Van Beneden, 1864. Specimens captured and maintained in the Duisburg Zoo are so designated. Specimens supplied to Nuernberg, Germany,...

Martin, K., 1968: Concentrative accumulation of choline by human erythrocytes. Influx and efflux of choline in human erythrocytes were studied using (14)C-choline. When incubated at 37 degrees C with physiological concentrations of choline erythrocytes concentrate choline; the steady-state ratio is 2.08 +/- 0.23 when the ext...

Yamamoto C.; Sawada S.; Kamiya H.; Hirata K., 1992: The primary site responsible for facilitated synaptic transmission during long term potentiation in hippocampus. Kawai, N , T Nakajima And E Barnard (Ed ) Neuroreceptors, Ion Channels And The Brain; 7th Tokyo Metropolitan Institute For Neurosciences International Symposium on Neuroreceptors, Ion Channels And The Brain, Tokyo, Japan, October 22-24, 1991 Xiv+234p Elsevier Science Publishers B V : Amsterdam, Netherlands; (Dist in The Usa And Canada By Elsevier Science Publishing Co , Inc : New York, New York, Usa) Illus 215-221

Dmitrash, M.A., 1973: The effect of various diluents and thawing temperatures on quality of pelleted semen. The effect was tested of using 3% sodium citrate, 1% sodium chloride, glucose-citrate and glucose-citrate-egg yolk as thawing media at 40 deg C for pelleted bull semen. In another experiment, thawing temps. of 40 deg , 50 deg , 60 deg and 70 deg w...

Mccarthy P.M.; Mitchell M.E., 1985: New lichen records from the burren and the aran islands ireland. Irish Naturalists' Journal 21(12): 521-523