海洋开发与管理2024，Vol.41Issue(4)：114-123,10.
枸杞岛潮间带铜藻衰败及补充过程的生态学研究
Ecological Study on the Decay and Replenishment of Sargassum horneri in the Intertidal Zone of Gouqi Island
摘要
Abstract
Sargassum horneri is one of the important species in the seaweed field in China,which plays an important role in supporting the marine environment and fishery resources.In order to find out whether the Sargassum horneri is a perennial problem and the tolerance tem-perature of Sargassum horneri,based on the field intertidal monitoring and observation,the ec-ological process of Sargassum horneri's decline period in natural habitat was explored by re-cording the biological parameters such as plant height,trunk diameter,fixator attachment area and water temperature data.The results showed that:(1)at the end of May,Sargassum horne-ri in the intertidal zone of Gouqi Island began to enter the decline period after breeding and the decline of Sargassum horneri showed obvious seasonal variation(P＜0.05).The water tempera-ture during the summer has become the key factor to determine the perennial of Sargassum hor-neri.In J1 uly,the temperature in the intertidal zone of Gouqi Island reached more than 25 ℃.With the increase of temperature,all the fixators of 76 strains of Sargassum horneri decayed and fell off,and they could not spend the summer for nutritional reproduction.Therefore,it was judged that the Sargassum horneri in the intertidal zone of Gouqi Island in Zhejiang Prov-ince were annual.(2)When the water temperature was above 25 ℃,the Sargassum horneri fix-ator began to break and rot,and could not survive.The tolerance temperature range of the eco-logical amplitude of mature Sargassum horneri in the intertidal zone of Gouqi Island,Zhejiang Province is 7.1～25 ℃.(3)The decay time of intertidal Sargassum horneri is relatively short,which is mainly based on the fact that after the reproduction of intertidal Sargassum horneri,the adhesion of the fixator is reduced and the adhesion area is small,and the adhesion is weak.Under the action of waves and currents,the fixator is easier to fall off and lose,and the decay and apoptosis time is faster.(4)In May,faced with the situation of low growing algae,the in-tertidal Sargassum horneri are still able to carry out sexual reproduction and release spores that firmly adhere to the surrounding parent body.By aggregating the seedling population,they re-duce the exposure to air and light damage during low tide,and cause competition for growth re-sources,which is an important survival and competition strategy for them.Sargassum horneri utilize survival and competition strategies to maintain the reproduction of their population,and on this basis,they continue to expand their distribution range.The above research results pro-vide a reference value for understanding whether the Sargassum horneri are perennial,analyzing the life history of Sargassum horneri,for its artificial development and marine ecolog-ical environment protection and provide a scientific basis for the restoration and reconstruction of degraded Sargassum horneri population.关键词
铜藻/固着器/多年生/温度生态幅/生存竞争策略Key words
Sargassum horneri/Holdfast/Perennial/Temperature ecological amplitude/Survival competition strategy分类
资源环境引用本文复制引用
杨起帆,王惠杰,朱伟栋,苗航,刘峰宇,毕远新,贺舟挺..枸杞岛潮间带铜藻衰败及补充过程的生态学研究[J].海洋开发与管理,2024,41(4):114-123,10.基金项目
浙江省科技厅基础公益项目(LTGS24C030002) （LTGS24C030002）
浙江省科技厅重点研发项目(2023C03120) （2023C03120）
舟山市科技计划项目(2022C31054). （2022C31054）
