Аннотация
В статье обсуждается таксономический состав зообентоса, плотность, биомасса, индекс видового разнообразия и состав доминирующего комплекса водоемов южной тундры в низовьях р. Индигирка. Исследованиями охвачен 51 водоем: 8 озер, 2 травяно-гипновых болота, 41 мелкий тундровый водоем. Установлено, что состав зообентоса включает 17 таксонов беспозвоночных из 3 типов и 7 классов. Основу его разнообразия представляют типы Mollusca и Arthropoda. По плотности и биомассе в сообществах доминируют Amphipoda, Mollusca, Arachnida, Trichoptera, Plecoptera, Diptera. Наибольшее значение индекса Шеннона отмечено для сообщества оз. Дьюкарское. Выявлено, что макрозообентос исследованных водоемов обладает высоким фаунистическим сходством в связи с периодическим обменом видами. Этот механизм способствует взаимообогащению бентофауны водоемов и поддержанию их разнообразия в условиях субарктических тундр.
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