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虾池常见微藻种群温度、盐度和氮、磷含量生态位

梁伟峰1,2;陈素文1;李卓佳1;曹煜成1;杨莺莺1   

  1. 1中国水产科学研究院南海水产研究所, 广州 510300;2广东海洋大学, 广东湛江 524000
  • 收稿日期:2008-05-05 修回日期:1900-01-01 出版日期:2009-01-20 发布日期:2009-01-20

Niche characteristics of common microalgae communities in prawn-aquaculture pond in terms of water temperature, salinity, nitrogen, and phosphorus resources.

LIANG Wei-feng1,2;CHEN Su-wen1;LI Zhuo-jia1;CAO Yu-cheng1;YANG Ying-ying1   

  1. 1South China Sea Fisheries Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China;2Guangdong Ocean University, Zhanjiang 524000, Guangdong, China
  • Received:2008-05-05 Revised:1900-01-01 Online:2009-01-20 Published:2009-01-20

摘要: 就温度、盐度、氮磷含量设计试验,对4种虾池常见微藻种群新月菱形藻、啮蚀隐藻、微绿球藻、蛋白核小球藻的生态位进行研究.结果显示:啮蚀隐藻在温度和盐度资源上的生态位宽度值最大,分别达0.980和0.988,新月菱形藻在氮、磷含量资源上的生态位宽度值最大,达0.990,蛋白核小球藻在各资源的生态位宽度值均最小,平均只有0.926;啮蚀隐藻与蛋白核小球藻在温度和盐度资源上的生态位重叠值最小,分别为0.809和0.702,啮蚀隐藻与新月菱形藻在氮、磷含量资源上的生态位重叠值最小,只有0.829,蛋白核小球藻与微绿球藻在温度、盐度和氮、磷含量资源上的生态位重叠值均最大,分别为0.986、0.974和0.989.表明在养殖水环境调控过程中,啮蚀隐藻适宜与新月菱形藻、微绿球藻或蛋白核小球藻共同培育,而蛋白核小球藻和微绿球藻对资源的竞争性明显,不适合同时引入同一池塘进行培育.

关键词: 净生态系统碳交换量, 涡度相关, 水热变化, 流动沙丘

Abstract: A 4-factorial (water temperature, salinity, nitrogen, and phosphorus) experiment was designed to study the niche characteristics of four common micro algae communities in prawn-aquaculture pond. The results showed that the niche breadth was the greatest for Cryptomonas erosa in temperature and salinity r esources (0980 and 0988, respectively) and for Niztzschia closterium in nitr ogen and phosphorus resources (0990), but the smallest for Chlorella pyrenoidosa in all test resources, with an average value of 0926. As for niche overlap, it was the smallest for C. erosa and C. pyrenoidosa in temperature and sa linity resources (0809 and 0702, respectively) and for C. erosa and N. closterium in nitrogen and phosphorus resources (0829), but the greatest fo〖HJ*3〗 r C. pyrenoidosa and Nannichloropsis oculata in temperature, salinity, and nitro gen and phosphorus resources, with the values being 0986, 0974 and 0989, r espectively. All of these suggested that in prawn-aquaculture pond, C. erosa co uld be bred with any other three of the microalgae communities, while N. oculata and C. pyrenoidosa should not be bred together for their obvious competition on the resources.

Key words: humidity and temperature variation, net ecosystem carbon exchange, eddy covariance., mobile dune