Effects of salinity, light and temperature on growth rates of two species of Gracilaria （Rhodophyta）

Effects of temperature, salinity and light intensity on growth rates of Gracilaria lichenoides and G. tenuistipitata var. liui Zhang et Xia were tested. Eight to ten levels of each factor were first tested separately. The best growth rate was obtained under the conditions of 32°C, 30 and 240 μmol/(m²·s) for G. lichenoides, and 24°C, 20 and 200 μmol/(m²·s) for G. tenuistipitata, respectively. Then a uniform design was used to evaluate the optimal combinations of the three factors. The best conditions for the highest daily specific growth rates (% increase in wet weight) are determined to be 31.30°C, 32.10, and 287.23 μmol/(m²·s) for G. lichenoides (16.26%/d), and 25.38°C, 21.10, and 229.07 μmol/(m²·s) for G. tenuistipitata (14.83%/d), respectively. Supported by the 908 Special Program (908-02-04-07), the National Basic Research Program of China (973 Program, No. 2006CB400608), and K. C. Wong Magna Fund in Ningbo University     

添加大型海藻龙须菜对中肋骨条藻赤潮的影响

江蓠属大型海藻具有产氧强及高效吸收营养盐的特点，可用来缓冲赤潮消亡、崩溃造成的生态影响．本文的研究是在已发生骨条藻赤潮的系统中添加龙须菜，调节及缓冲赤潮系统的生态脆弱性．结果表明，水体中2kg／m^3密度的龙须菜可以较好地供应氧及稳定pH，并大量吸收营养盐及控制水体中的异养细菌的剧增，此外,该密度龙须菜的添加还能促进介质中单一微藻种群的改变，使得系统中的优势微藻种类的增加和丰度的下降．     

浙北沿海滩涂可持续利用研究与对策

在调查浙江北部沿海地区滩涂利用现状及问题的基础上,分析了“近陆-滩涂-近海”污染物质入海通量,评价目前区域内的滩涂质量状况,提出滩涂的生态功能区规划及滩涂生态脆弱带的可持续利用的对策措施。