Сообщества бентосных водорослей коралловых рифов залива Санья (остров Хайнань, Китай) в местах, сильно загрязнённых биогенными веществами, и их изменения после устранения источника загрязнения
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Аннотация
Ранее установлено, что экстремально высокие концентрации биогенных веществ в морской воде в районе стока загрязнённых вод рыбной фермы на полуострове Лухуэйтоу (залив Санья) приводят к значительному сокращению видового разнообразия и обилия низкопродуктивных одно- и многолетних красных и бурых водорослей, а также к увеличению количества и биомассы высокопродуктивных зелёных водорослей. С 2017 по 2019 г. впервые были изучены изменения в количестве и структуре донных водорослевых сообществ в приливно-отливных зонах залива Санья после устранения источника загрязнения — ликвидации рыбной фермы. Показано, что снижение концентрации растворённого неорганического азота (DIN) (с ≈ 20 до 2,5 μM) и ортофосфатов (с 5,0 до 0,2 μM) в морской воде существенно изменило разнообразие, видовой состав и структуру бентосных водорослевых сообществ. Через 1,5 года после ликвидации источника загрязнения основные показатели флоры стали близки в среднем к таковым умеренно загрязнённых участков залива Санья.
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