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Ultima descărcare din IBN: 2024-03-20 15:38 |
Căutarea după subiecte similare conform CZU |
574.583:556.51(478) (2) |
Ecologie generală şi biodiversitate (764) |
Hidrosfera. Apa în general. Hidrologie (450) |
SM ISO690:2012 UNGUREANU, Laurenţia. Productia primara si structura fitoplanctonului lacului Costesti-Stânca. In: Oltenia - studii si comunicari stiintele naturii, 2006, nr. 22, pp. 64-67. ISSN 1454-6914. |
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Oltenia - studii si comunicari stiintele naturii | |||||
Numărul 22 / 2006 / ISSN 1454-6914 | |||||
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CZU: 574.583:556.51(478) | |||||
Pag. 64-67 | |||||
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The article contains data on primary production, destruction and the structure of phytoplan communities of Costeti-Stânca reservoir during 2005 vegetation period. A total number of 72 species and varieties of planktonic algae were identified, these bellonging to the following taxonomic groups: Cyanophyta- 8, Chrysophyta - 1, Bacillariophyta31, Pyrrophyta -1 , Euglenophyta – 8, Chlorophyta – 23. Within the seasonal dynamics, the highest values of quantitative parameters were revealed during summer and autumn. The average value of the primary production reached the level 199,5 gO2/m2during 2005, this being much lower than the average annual values of 1996-1998. The destruction values instead, reached the level of 2421,09 gO2/m2, remaining remaining stable in comparison to 19961998. The A:R ratio of 0,08 indicates a dominance of alohtone organic substances in the biotic processes of lake ecosystem. |
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Cuvinte-cheie phytoplankton, diversity, number, biomass, Successions, primary production, destruction, fitoplancton, diversitate, efectiv numeric, biomasă, succesiune, producție primară, destructie |
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