НАДЗВИЧАЙНЕ «ЦВІТІННЯ» ВЕЛИКОКЛІТИННІ ВИДІВ ДІАТОМОВИХ ВОДОРОСТЕЙ В ПРИБЕРЕЖНИХ ВОДАХ М. СЕВАСТОПОЛЯ В 2007 – 2010 РР. (ЧОРНЕ МОРЕ)

• Datum: 2023
• 1. Verfasser: Сенічева, М. І.
• Format: Artikel
• Sprache: Ukrainian
• Veröffentlicht: Marine Ecological Journal 2023
• Schlagworte: фітопланктон; діатомові водорості; великоклітинні види; біомаса; «цвітіння» води; біогенні елементи; Чорне море
• Online Zugang: https://mej.od.ua/index.php/mej/article/view/73
• Назва журналу: Marine Ecological Journal

From 1994 to 2010 the complex hydrochemical and biological monitoring of Sevastopol off-shore waters were carried out. The research results showed that in a cold period of year a «water-bloom» was caused by small-cell species of diatoms algae (less than 50 mkm), in a warm period (from April to October) at the decline of concentration of mineral forms of biogenic elements and increase of concentration of their organic forms a «water-bloom» was caused by large-cell species (50 – 1500 mkm). In 2000th due to the increasing of freshwater flow in the Sevastopol bay biomass of large-cell species Dactyliosolen fragilissimus, Cerataulina pelagica, Pseudosolenia calcar-avis, Proboscia alata increased by an order (to 19 – 51 g·m-3) compared to 90th years of past century (2 – 6 g·m-3). A mass growth of D. fragilissimus and C. pelagica was in a 5-meter layer, ones of P. calcar-avis and P. alata was in the whole water layer, them biomass increased with a depth. In abnormally warm 2009 P. alata vegetated in plankton during whole year causing the early-spring and summer – autumn – winter «water-bloom». The growth of large-cell species in periods with an increased concentration of dissolved organic substance supposes that they have the ability to myxotrophic nutrition.