[1]谢建明,高春柏,欧光南,等.九龙江口浮游生物群落呼吸速率及其影响因素[J].集美大学学报(自然版),2019,24(5):343-351.
 XIE Jianming,GAO Chunbo,OU Guangnan,et al.Factors Regulating Pelagic Community Respiration in Jiulong River Estuary[J].Journal of Jimei University,2019,24(5):343-351.
点击复制

九龙江口浮游生物群落呼吸速率及其影响因素()
分享到:

《集美大学学报(自然版)》[ISSN:1007-7405/CN:35-1186/N]

卷:
第24卷
期数:
2019年第5期
页码:
343-351
栏目:
水产、食品与生物技术
出版日期:
2019-09-28

文章信息/Info

Title:
Factors Regulating Pelagic Community Respiration in Jiulong River Estuary
作者:
谢建明高春柏欧光南何碧烟
(集美大学食品与生物工程学院,福建 厦门 361021 )
Author(s):
XIE JianmingGAO ChunboOU GuangnanHE Biyan
(College of Food and Biological Engineering,Jimei University,Xiamen 361021 China)
关键词:
浮游生物群落呼吸速率有机物氧亏损九龙江口
Keywords:
pelagic communityrespiration rateorganic matteroxygen deficitJiulong River Estuary
摘要:
采用甲板培养的方法,于2015年秋季和2016年夏季分别对九龙江口表层水体的浮游生物群落呼吸速率进行了研究,同时测定与浮游生物群落呼吸作用相关的环境参数,分析环境因素对呼吸速率的影响。结果表明,秋季浮游生物群落呼吸速率变化范围为4.3~43.1 μmol·(L·d)-1,沙口上游群落呼吸速率显著高于河口下游,而夏季群落呼吸速率的变化范围为14.5~23.4 μmol·(L·d)-1,最大值却出现在河口下游的藻华区。统计分析表明,在生物量较低的秋季,浮游生物群落呼吸速率与溶解有机碳(dissolved organic carbon,DOC)、叶绿素a(chlorophyll a,Chl-a)均呈显著的正相关,与溶解氧(dissolved oxygen,DO)呈显著负相关;而在生物量较高的夏季群落,呼吸速率与Chl-a、DOC呈弱正相关性,与DO几乎没有相关性。说明,在生产力低的季节,群落呼吸作用不但对DOC的依赖更高,而且自养-异养耦合程度也更大;秋季DO浓度主要受控于浮游生物群落的呼吸作用,夏季则主要受控于浮游植物的光合作用。
Abstract:
The pelagic community respiration rates of surface waters were measured as in vitro changes of dissolved oxygen concentration during deck incubations in November 2015 (autumn) and July 2016 (summer).The environmental parameters related to the community respiration were also determined,and the response of pelagic community respiration rate to environmental factors was analyzed.The results showed that the community respiration rates exhibited significant spatial and seasonal variations in Jiulong Riv er Estuary.In autumn,the respiration rates in the surface water ranged from 4.3 to 43.1 μmol·(L·d)-1,in the upper reaches of the estuary were significantly higher than rates in downstream.On the contrary,in summer,community respiration rates ranged from 14.5 to 23.4 μmol·(L·d)-1,and the maximum respiration rate was observed in the algal bloom area in the lower estuary.Statistical analysis showed that the pelagic community respiration rates were significantly and positively correlated with both DOC and Chl-a concentration in autumn with low phytoplankton biomass,while in summer with high biomass,the community respiration rates were positively but no significantly correlated with Chl-a and weak positively correlated with DOC concentration.These results suggested that the pelagic community respiration was dependent more on allochthonous DOC supplied,and that the autotrophic -heterotrophic coupling degree was greater in low productive season than in high productive season.In autumn,DO concentrations in Jiulong Riv er Estuary were mainly controlled by the pelagic community respiration,while in summer,photosynthetic oxygen production had more influence on DO concentrations than community respiration
更新日期/Last Update: 2019-11-04