A change in phytoplankton community index with water quality improvement in Tolo Harbour, Hong Kong
A change in phytoplankton community index with water quality improvement in Tolo Harbour, Hong Kong
复制标题
香港吐露港浮游植物群落指数随水质改善的变化
DOI：
10.1016/j.marpolbul.2017.10.005
复制
发表时间：
2018-02-01
影响因子：
5.8
通讯作者：
Yin, Kedong
中科院分区：
文献类型：
--
作者：
Lei, Yue;Whyte, Callum;Yin, Kedong
吐露港及赤门海峡的水质自1998年污水分流后已有所改善。然而，它仍然知之甚少，如何减少营养负荷影响浮游植物群落。为了评估这一点，我们应用浮游植物群落指数PI（mp）的23年数据（1991-2013）在内部（TM 4）和外部（TM 8）在吐露港，前者比后者更富营养化。结果表明：（1）污水分流后浮游植物群落随时间发生变化;（2）硅藻和甲藻比自养/兼养和异养甲藻能更好地指示营养盐的影响;（3）两站的恢复率不同，但在相同的时间达到相似的状态;（4）浮游植物群落的季节性变化表现为春季的扰动大于其他季节。我们的研究结果表明，营养盐减少在吐露港导致浮游植物群落的积极变化。
Water quality in Tolo Harbour and Channel (Tolo) has been improved since 1998 after the diversion of sewage effluent. However, it remains poorly understood how nutrient loading reduction has impacted the phytoplankton community. To evaluate this, we applied a Phytoplankton Community Index PI(mp) to the 23-year data (1991-2013) at inner (TM4) and outer (TM8) sites in Tolo, with the former being more eutrophic than the latter. The results show that 1) the phytoplankton community changed with time after sewage diversion; 2) "diatoms and dinoflagellates" were better indicators of nutrient impact than "autotrophic/mixotrophic and heterotrophic dinoflagellates"; 3) the rate of recovery differed between the two stations, but both reached a similar state at a similar time; 4) seasonality of the phytoplankton community showed greater disturbance in spring than in other seasons. Our findings indicate that the nutrient reduction in the Tolo resulted in a positive change in the phytoplankton community.