中国水产科学2012，Vol.19Issue(3)：462-470,9.DOI:10.3724/SP.J.1118.2012.00462
不同营养盐浓度对3种大型红藻氮、磷吸收及其生长的影响
Effect of nutrient supply on nitrogen and phosphorus uptake and growth in three species of macroalgae
摘要
Abstract
We conducted a series of conditional experiments using Gracilaria asiatica, G. chouae, and Grateloupia fllicina to determine the effects of nutrient supply on nitrogen and phosphorus uptake and macroalgae growth. All the three macroalgae responded rapidly to changes in the supply of nitrogen and phosphorus. The uptake curves yielded a first-order kinetic equation. At 50 μmol/L nitrogen, G, asiatica and G. chouae exhibited maximum uptake rates of 0.739 μmol/(g·h) and 0.648 μmol/(g·h) respectively. At 20 μmol/L nitrogen, G. fllicina exhibited a maximum uptake rate of 0.614 μmol/(g·h). At a level of 1.0 μmol/L phosphorus, G. asiatica and G. chouae exhibited maximum uptake rates of 0.015 μmol/(g·h) and 0.018 μmol/(g·h), respectively. At 0.7 μmol/L phosphorus, G. filicina exhibited a maximum uptake rate of 0.016 μmol/(g·h). Our results suggest that G. chouae is more efficient at removing nitrogen and phosphorus than the other two species. The greatest increase in wet weight occurred in G. chouae and the lowest was in G. fllicina. Changes in the supply of nitrogen had a stronger influence than changes in phosphorus on the growth of G. filicina.关键词
真江蓠/脆江蓠/蜈蚣藻/吸收动力学/相对生长率Key words
Gracilaria asiatica/ Gracilaria chouae/ Grateloupia filicina/ uptake kinetics/ relative growth rate分类
资源环境引用本文复制引用
李恒,李美真,徐智广,王翔宇,曹婧..不同营养盐浓度对3种大型红藻氮、磷吸收及其生长的影响[J].中国水产科学,2012,19(3):462-470,9.基金项目
国家海洋公益性行业科研专项经费项目(200905019-2,200905020-2) （200905019-2,200905020-2）
山东省科技攻关计划项目(2009GG10005012). （2009GG10005012）
