| Registro completo |
| Provedor de dados: |
IBSS Repository
|
| País: |
Ukraine
|
| Título: |
Аномальное цветение Emiliania huxleyi (Prymnesiophyceae) в Чёрном море в 2012 г.
Аномальне цвiтiння Emiliania huxleyi (Prymnesiophyceae) у Чорному морi у 2012 р.
Abnormal blooming by Emiliania huxleyi (Prymnesiophyceae) in the Black Sea in 2012
|
| Autores: |
Ясакова О. Н.
Станичный С. В.
|
| Data: |
2013-02-21
|
| Ano: |
2012
|
| Resumo: |
In 2012 a massive bloom of nanoplankton Emiliania huxleyi (Lohmann) W.W. Hay & H.P. Mohler was registered in the Black Sea. Cells of E. huxleyi are covered with calcite lamellae which facilitate light scattering in optical spectrum and, hence, detection of a blooming zone by scanners MODIS and SeaWiFS (Balch, 2005). The online observation of optical properties in the surface of the Black Sea (dvs.net.ua/mp) carried out by Marine Hydrophysical Institute, National Academy of Sciences of Ukraine and phytoplankton surveys regularly made in the NE Black Sea by the Southern Research Centre, Russian Academy of Sciences have produced scientific evidence sufficient to regard as huge and persistent plankton bloom (May – July 2012) as abnormal for the recent 15 years. The outbreak of E. huxleyi started in the deep-water eastern Black Sea in the second decade of May; in a week it has expanded to the vast seawater area eastward of 35ºЕ, and by 27 May the whole deep-water part of the sea, except for the NW shelf, was blooming. In June the phenomenon that coloured the sea milk-white has reached the peak; the transparence of the sea water approximated 2m vs. 10-15 m usual for the seawater area. The abundance of E. huxleyi measured on the shelf near Novorossiysk amounted to 16 million cell· l-1 that is an order of magnitude greater than in the past. Recent satellite observations have revealed a quasi-two-year periodicity in the abundance of E. huxleyi in the Black Sea that was proved in situ, too (Pautova et al., 2007; Sukhanova, 1995; Burenkov et al., 2006; Cokacar et al., 2001; Mikaelyan at al., 2006). Among possible factors which intensify growth of E. huxleyi is winter deep-water convection; it was noticed that after cold winters in 1998, 1999, 2006 and 2008 phytoplankton blooms were especially long and intensive. Inasmuch as coccolithophorids can regulate the level of atmospheric CO2 and thereby influence global temperature and climate, further investigations of the machinery and dynamics of outbreaks of E. huxleyi would be of special importance.
|
| Tipo: |
Journal Contribution
|
| Idioma: |
Russo
|
| Identificador: |
Морской экологический журнал, 11 (4), p. 54
1684-1557
http://10.0.0.194:8080/dspace/handle/99011/3657
|
|
