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Интеллектуальная Система Тематического Исследования НАукометрических данных |
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Долговременные наблюдения пелагического зоопланктона озера глубокого и некоторые проблемы мониторинговых исследованийстатья
- Авторы: Коровчинский Н.М., Бойкова О.С., Мнацаканова Е.А.
- Сборник: Труды гидробиологической станции на Глубоком озере
- Том: 11
- Год издания: 2017
- Место издания: Товарищество науч. изд. КМК М
- Первая страница: 4
- Последняя страница: 29
- Аннотация: LONG-TERM OBSERVATIONS OF THE PELAGIC ZOOPLANKTON OF LAKE GLUBOKOE AND SOME PROBLEMS OF MONITORING STUDIES Korovchinsky N.M., Boikova O.S., Mnatsakanova E.A. The results of long-term monitoring studies of the pelagic zooplankton of Lake Glubokoye (Moscow area) beginning from the second half of XIX century are overviewed. In the first period of the studies (1869–1952), the species composition of crustaceans remained to be stable except the disappearance of “Bythotrephes longimanus” in the end of 1890s due to the introduction of the juvenile coreginid fish in the lake. The following great perturbation of the Lake Glubokoye ecosystem has appeared in the middle of 1960s after the hydromelioration of the lake catchment. This has resulted in the considerable changes of both limnological-hydrochemical (e.g., increase of transparency and water depth oxygenation) and biological (disappearance of some species and appearance of other ones) parameters. In particular, the invasion of Daphnia galeata impacted the pelagic zooplankton much due to its hybridization with native D. cucullata and D. hyalina and establishment of long persistent populations of interspecies hybrid forms. The conspicuous changes were also observed in rotifer’s species composition and number oscillations. In total, 27 species of the latter group were recorded in the lake pelagic zooplankton beginning from the end of 1890s and 18 of them remain to be known in recent time. Few of the latter species (Gastropus hyptopus, Ascomorpha ovalis) have been registered in the community quite recently. The contemporary pelagic crustacean community is composed of 11 species and three hybrid forms (D. galeata x D. cucullata, D. hyalina x D. galeata and D. hyalina x D. cucullata). The significance of long-term monitoring observations is discussed. In their framework, the exact identification of species is of particular importance.
- Добавил в систему: Мнацаканова Елена Александровна