TY - JOUR AU - Shoman, N. Yu. AU - Akimov, A. I. PY - 2022/09/13 Y2 - 2024/03/29 TI - Competitive advantages of the diatom Skeletonema costatum Cleve, 1873 in the Black Sea in the winter–spring period JF - Marine Biological Journal JA - mbj VL - 7 IS - 3 SE - Notes DO - 10.21072/mbj.2022.07.3.09 UR - https://marine-biology.ru/mbj/article/view/359 SP - 103-106 AB - <p>Individual physiological features of the <em>Skeletonema costatum</em> vegetation under low light intensity and low temperature are described; these peculiarities allow the species to prevail in the Black Sea phytoplankton in winter and early spring. This marine diatom is characterized by high growth efficiency under light-limiting conditions (0.13 day<sup>−1</sup>·(µE·m<sup>−2</sup>·s<sup>−1</sup>)<sup>−1</sup>) which indicates an increase in the specific growth rate of the alga with a rise in light intensity by 1 µE·m<sup>−2</sup>·s<sup>−1</sup>. Moreover, the species is characterized by low values of the light intensity saturating the growth – 12 µE·m<sup>−2</sup>·s<sup>−1</sup> at +5 °C and 18 µE·m<sup>−2</sup>·s<sup>−1</sup> at +10 °C. At +5…+10 °C, <em>S. costatum</em> growth rate is about 2 times higher than that of other representatives of the Black Sea phytoplankton in the winter–spring period. This diatom shows increased sensitivity to high light intensity: at +10 °C, photoinhibition of microalgae growth is observed under light intensity above 120 µE·m<sup>−2</sup>·s<sup>−1</sup>.</p> ER -