世界希斯藻属Sheathia地理分布与环境因子的关系  

GEOGRAPHICAL DISTRIBUTION AND RELATIONSHIP WITH ENVIRONMENTAL FACTORS OF SHEATHIA IN THE WORLD

作　　者：郭伟楠 王飞[1] 南芳茹 刘旭东 刘琪[1] 冯佳[1] 谢树莲[1] GUO Wei-Nan;WANG Fei;NAN Fang-Ru;LIU Xu-Dong;LIU Qi;FENG Jia;XIE Shu-Lian(School of Life Science,Shanxi University,Taiyuan 030006,China)

机构地区：[1]山西大学生命科学学院,太原030006

出　　处：《水生生物学报》2023年第11期1778-1786,共9页Acta Hydrobiologica Sinica

基　　金：国家自然科学基金(32170204、41871037和31800172)资助。

摘　　要：文章以全球116组希斯藻属Sheathia样本数据为研究对象,采用单因素方差分析、相关性分析、逐步回归分析、主成分分析和线性判别分析多种统计分析方法,分析了不同种类地理分布与纬度、经度、海拔高度、水温、流速和pH六种环境因子之间的差异性及相互关系。根据单因素方差分析和线性判别分析结果可知,Sheathia arcuata、S.boryana、S.confusa、S.dispersa、S.longipedicellata和Remainder的地理分布和生长环境有显著性差异。由相关分析、逐步回归分析和主成分分析结果可知,海拔高度、水温、流速和pH是影响希斯藻属Sheathia地理分布的重要环境因子。文章从种水平上分析了影响希斯藻属Sheathia地理分布的重要环境因子,为丰富淡水红藻的地理分布数据,进一步保护生境特殊的淡水红藻类群提供更多的科学依据。Sheathia is a representative genus of freshwater red algae with a large number of species and a wide distribution.It grows most commonly in clean freshwater such as streams,rivers and springs with low levels of light,low temperatures and high levels of dissolved oxygen.It has been recorded from Asia,Europe,Africa,North America and Oceania.Its harsh habitat makes it easy for the Sheathia to fail to grow normally when the external environment is altered.With the increasing pollution of the global water environment,the scarce freshwater resources have been severely damaged and the number of freshwater Sheathia is also decreasing.At the moment,many species have been added to the list of endangered plants.In this paper,116 species of samples of Sheathia around the world were used as the research object.A variety of statistical analyses,including One-way ANOVA,correlation analysis,stepwise regression analysis,principal component analysis and linear discriminant analysis were used to analyze the variability and interrelationships between the geographical distribution of different species and latitude,longitude,altitude,water temperature,current velocity and pH.According to the results of One-way ANOVA and linear discriminant analysis,the geographical distribution and growth environment of Sheathia arcuata,S.boryana,S.confusa,S.dispersa,S.longipedicellata and Remainder were significantly different.Combining the results of correlation analysis,stepwise regression analysis and principal component analysis,altitude,water temperature,current velocity and pH were important environmental factors affecting the geographical distribution of Sheathia.This study has analyzed the important environmental factors affecting the geographical distribution of Sheathia at the species level,provide more scientific basis for understanding the mechanism of freshwater red algae adaptation to the environment,enrich the data on the geographical distribution of freshwater red algae,establish a relatively perfect freshwater nature sanctuary and pr

关 键 词：地理分布 环境因子 淡水红藻 希斯藻属 

分 类 号：S932.8[农业科学—渔业资源]