The competition between <i>Ulva prolifera</i> and <i>Ulva lactuca under</i> different N/P

Yang Xue; Lin Kun; Tan Liju; Wang Jiangtao

doi:10.3969/j.issn.0253-4193.2020.08.006

Volume 42 Issue 8

Nov. 2020

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Yang Xue，Lin Kun，Tan Liju, et al. The competition between Ulva prolifera and Ulva lactuca under different N/P[J]. Haiyang Xuebao，2020, 42(8)：50–58 doi: 10.3969/j.issn.0253-4193.2020.08.006

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Yang Xue，Lin Kun，Tan Liju, et al. The competition between Ulva prolifera and Ulva lactuca under different N/P[J]. Haiyang Xuebao，2020, 42(8)：50–58 doi: 10.3969/j.issn.0253-4193.2020.08.006

Yang Xue，Lin Kun，Tan Liju, et al. The competition between Ulva prolifera and Ulva lactuca under different N/P[J]. Haiyang Xuebao，2020, 42(8)：50–58 doi: 10.3969/j.issn.0253-4193.2020.08.006

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The competition between Ulva prolifera and Ulva lactuca under different N/P

doi: 10.3969/j.issn.0253-4193.2020.08.006

Yang Xue^1
,,
Lin Kun¹,
Tan Liju¹,
Wang Jiangtao^{1
,
,}

Key Laboratory of Marine Chemistry Theory and Technology of Ministry of Education, Ocean University of China, Qingdao 266100, China

Received Date: 2019-09-30
Rev Recd Date: 2019-12-17

Available Online: 2020-11-18

Publish Date: 2020-08-25

Abstract

Abstract

In recent years, the eutrophication of seawater has led proliferation of large seaweeds in offshore waters, becoming a worldwide environmental problem. Since 2007, the green tide of Ulva prolifera has continuously broken out in the Yellow Sea, causing huge economic losses. In order to investigate the relation between macroalgae and the ratio of nitrogen to phosphorus (N/P), and the competition mechanism with other macroalgae, we studied the growth of U. prolifera and U. lactuca when pure culture and co-culture. The results showed that: (1) When U. prolifera was pure cultured, the higher or lower N/P can promote the growth of U. prolifera. (2) When U. lactuca was pure cultured, the effect of the N/P on U. lactuca is not obvious. (3) U. prolifera growth was inhibited to some extent under the different N/P conditions when U. prolifera and U. lactuca were co-cultured, and the lowest N/P group was affected the most. (4) The N/P in the Subei Shoal is more suitable for the growth of U. prolifera, which may be one of the main reasons for the large-scale outbreak of U. prolifera green tide.
- green tides,
- Ulva prolifera,
- Ulva lactuca,
- nutrients,
- N/P,
- competition

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References(32)

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