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LIU Wei, WU Haiyi, ZHAN Dongmei, DUAN Delin. Phenological study of Sargassum thunbergii (Fucales, Phaeophyta) in Lidao Bay, Rongcheng, China[J]. Journal of Oceanology and Limnology, 2016, 34(3): 498-506 |
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Phenological study of Sargassum thunbergii (Fucales, Phaeophyta) in Lidao Bay, Rongcheng, China |
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| LIU Wei1,2,3, WU Haiyi3, ZHAN Dongmei3, DUAN Delin1 |
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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 |
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| Abstract: |
| 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 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-off between sexual reproduction and vegetative regeneration. |
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| Key words:
Sargassum thunbergii|temperature|day length|tidal position|length hierarchy
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| Received: 2015-03-05 Revised: 2015-04-14 |
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