摘要
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.
基金
Supported by the Laoshan Laboratory(No.LSKJ202204005)
the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDA23050502)
the State Key Program of National Natural Science Foundation of China(No.42130411)
the International Science Partnership Program of the Chinese Academy of Sciences(Nos.121311KYSB20190029,133137KYSB20200002)
the Key Deployment Project of Centre for Ocean Mega-Research of Science,Chinese Academy of Sciences(CAS)(No.COMS2019J03)。
