期刊
MARINE POLLUTION BULLETIN
卷 157, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2020.111353
关键词
Green tides; Green macroalgal community; Ulva prolifera; Blidingia sp.; Inflatable structure; Competitive advantage
资金
- National Key Research and Development Program of China [2016YFC1402102, 2019YFC1605704]
- National Natural Science Foundation of China [41706121, 41906120, 41976132]
- Fundamental Research Funds for the Central Universities [201964025]
- NSFCShandong Joint Fund [U1806213, U1606404]
The physiological characteristics of Ulva prolifera and Blidingia sp. during two pre-bloom stages (March & May) were compared to evaluate the competitive advantage of U. prolifera on Pyropia aquaculture rafts in Subei Shoal. (1) Compared to Blidingia sp., U. prolifera had a lower growth rate, chlorophyll content, photosynthetic efficiency, and antioxidant capacity in March. (2) In May, various indicators of U. prolifera's physiological function improved significantly, while the antioxidant capacity of Blidingia sp. decreased significantly. Large lipidic globules in U. prolifera cells became scattered small lipidic globules in May, which indicated a decrease in lipid membrane peroxidation. (3) In U. prolifera, the ratio of buoyancy to gravity of per unit volume was 1.73, and the bubbles inside the thalli provided 60% of the total buoyancy. Buoyancy generated by the inflatable structure of U. prolifera allowed this species to float after being separated from the rafts.
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