In-field nutrient enrichment experiments in Sanggou Bay kelp farming

Yiwen CHEN; Song SUN; Ziyuan HU; Junhua LIANG; Mingliang ZHU; Yitao ZHANG

doi:10.1007/s00343-025-4110-8

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In-field nutrient enrichment experiments in Sanggou Bay kelp farming

Ecology | Updated：2026-03-26

- In-field nutrient enrichment experiments in Sanggou Bay kelp farming
- Journal of Oceanology and Limnology Vol. 44, Issue 1, Pages: 174-183(2026)
- Affiliations：
  
  1.Key Laboratory of Marine Ecology and Environmental Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
  2.Jiaozhou Bay National Marine Ecosystem Research Station, Institute of Oceanology, Chinses Academy of Sciences, Qingdao 266071, China
  3.Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology Center, Qingdao 266237, China
  4.University of Chinese Academy of Sciences, Beijing 100049, China
  5.Rongcheng Chudao Aquaculture Corporation, Rongcheng 264312, China
- Author bio：
  
  sunsong@qdio.ac.cn
- Funds：
- DOI：10.1007/s00343-025-4110-8
  CLC：
- Received：12 April 2024，
  
  Accepted：29 May 2024，
  
  Online First：14 March 2025，
  
  Published：01 January 2026
- Accepted：
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CHEN Yiwen,SUN Song,HU Ziyuan,et al.In-field nutrient enrichment experiments in Sanggou Bay kelp farming[J].Journal of Oceanology and Limnology,2026,44(01):174-183.
DOI：

CHEN Yiwen,SUN Song,HU Ziyuan,et al.In-field nutrient enrichment experiments in Sanggou Bay kelp farming[J].Journal of Oceanology and Limnology,2026,44(01):174-183. DOI： 10.1007/s00343-025-4110-8.

摘要

Abstract

Nutrients play a crucial role in sustaining marine ecosystems and supporting mariculture

especially in seaweed aquaculture. Currently

seaweed farming

such as kelp cultivation

is entirely dependent on the natural supply of nutrients. Sanggou Bay in Shandong Peninsula

Yellow Sea

is renowned for its 60-year history of kelp cultivation; however

it is recently facing an increasing demand for nitrogen and phosphorus due to the expansion in aquaculture scale and production. There is no doubt that nutrient addition can enhance and sustain the production

but it is crucial to understand its effect on kelp growth under current nutrients condition and the potential ecological risks. Our in-field nutrient enrichment experiments show that nitrogen and phosphorus additions promoted the kelp biomass during the early growth stages

and have no adverse effects on phytoplankton or seawater nutrient levels throughout the experiment. From a long-term perspective

increasing nutrient supply appears to be an essential strategy for sustaining the aquaculture of kelp.

关键词

Keywords

references

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