Phenological study of Sargassum thunbergii (Fucales, Phaeophyta) in Lidao Bay, Rongcheng, China  

作　　者：刘玮 吴海一 詹冬梅 段德麟 

机构地区：[1]Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China [2]University of Chinese Academy of Sciences, Beijing 100049, China [3]Marine Biology Institute of Shandong Province, Qingdao 266100, China

出　　处：《Chinese Journal of Oceanology and Limnology》2016年第3期498-506,共9页中国海洋湖沼学报（英文版）

基　　金：Supported by the National Special Research Fund for Non-Profit Marine Sector(Nos.201305021,201305043,201305005,201405040);the National Natural Science Foundation of China(No.41376129)

摘　　要：We conducted a phenological evaluation of Sargassum thunbergii, a common algal species, along the coast of Lidao Bay, Rongcheng, China. The local S. thunbergii population entered a maturation period from early June to mid-August, when seawater temperature was 14.4 to 25. 1℃. Our results suggest an increase in temperatttre and day length during this period initiated thalli maturation. Inhabitants of the low tidal zone had higher thalli length and biomass compared with those from the mid- and high tidal zones. We observed a switch in the length frequency distribution and contribution of length classes to biomass between the small （〈20 cm） and long （20-79.9 cm） length classes at the time of thallus maturity. This suggests there is a trade-off between sexual reproduction and vegetative regeneration.We conducted a phenological evaluation of Sargassum thunbergii,a common algal species,along the coast of Lidao Bay,Rongcheng,China.The local S.thunbergii population entered a maturation period from early June to mid-August,when seawater temperature was 14.4 to 25.1°C.Our results suggest an increase in temperature and day length during this period initiated thalli maturation.Inhabitants of the low tidal zone had higher thalli length and biomass compared with those from the mid- and high tidal zones.We observed a switch in the length frequency distribution and contribution of length classes to biomass between the small(<20 cm) and long(20–79.9 cm) length classes at the time of thallus maturity.This suggests there is a trade-offbetween sexual reproduction and vegetative regeneration.

关 键 词：Sargassum thunbergii temperature day length tidal position length hierarchy 

分 类 号：S917.3[农业科学—水产科学]