在中国北方富营养化海湾的大型海草草甸中，成年鳗草嫩枝决定着幼苗的命运吗？
Do adult eelgrass shoots rule seedling fate in a large seagrass meadow in a eutrophic bay in northern China?
作者信息
Xu Shaochun, Xu Shuai, Zhou Yi, Yue Shidong, Zhang Xiaomei, Gu Ruiting, Zhang Yu, Qiao Yongliang, Liu Mingjie, Zhang Yunling, Zhang Zhenhai
机构信息
CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China; CAS Engineering Laboratory for Marine Ranching, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; University of Chinese Academy of Sciences, Beijing 100049, China.
CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China; CAS Engineering Laboratory for Marine Ranching, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; University of Chinese Academy of Sciences, Beijing 100049, China; Shandong Province Key Laboratory of Experimental Marine Biology, Qingdao 266071, China.
出版信息
Mar Pollut Bull. 2022 May;178:113499. doi: 10.1016/j.marpolbul.2022.113499. Epub 2022 Apr 7.
We conducted field sampling over 19 months to investigate eelgrass population reproduction status and ecological interactions in a large seagrass meadow in a eutrophic bay in northern China. The results showed asexual growth played an important role in the maintenance of existing meadows, and sexual reproduction played a critical role in the colonization of new areas. We conclude that adult eelgrass shoots do rule the fate of seedlings in the large seagrass meadow. Additionally, nutrient resources (N and P) at this location were found to meet eelgrass growth demand. The N/P ratios of seawater and seagrass indicated N limitation relative to P in the eutrophic bay based on the seagrass Redfield ratio (25-30). Nutrient uptake by seagrass might be an important factor in reducing the probability of a red tide in the study area. The results of this study provide fundamental information for eelgrass restoration and conservation.
我们进行了为期19个月的实地采样，以调查中国北方一个富营养化海湾大型海草草甸中鳗草种群的繁殖状况和生态相互作用。结果表明，无性生长在现有草甸的维持中发挥了重要作用，而有性繁殖在新区域的定殖中发挥了关键作用。我们得出结论，在大型海草草甸中，成年鳗草确实决定着幼苗的命运。此外，发现该地点的营养资源（氮和磷）满足鳗草生长需求。根据海草的雷德菲尔德比率（25-30），海水和海草的氮/磷比率表明，在该富营养化海湾中，相对于磷而言存在氮限制。海草对营养物质的吸收可能是降低研究区域赤潮发生概率的一个重要因素。本研究结果为鳗草的恢复和保护提供了基础信息。
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