caa a22 4500 445893834 CHVBK 20180317145625.0 cr unu---uuuuu 170323e20110501xx s 000 0 eng 10.1007/s10750-011-0610-y doi (NATIONALLICENCE)springer-10.1007/s10750-011-0610-y Temporal and spatial variations of chemical oxygen demand in Lake Taihu, China, from 2005 to 2009 [Elektronische Daten] [Yan Yin, Yunlin Zhang, Xiaohan Liu, Guangwei Zhu, Boqianq Qin, Zhiqiang Shi, Longqing Feng] We undertook a study in Lake Taihu, China, from 2005 to 2009 including a total of 639 samples to determine: (i) the seasonal dynamics and spatial distribution of the chemical oxygen demand (COD) and (ii) the relationships between the COD concentration and the biochemical oxygen demand (BOD), phytoplankton pigment, total dissolved nitrogen (TDN), and total dissolved phosphorus (TDP) concentrations, as well as the chromophoric dissolved organic matter (CDOM) absorption coefficient. There were significant spatial differences in the COD concentration, which gradually decreased from Zhushan Bay in the northwest, to the north, the lake center, and the southeast of the lake. The COD concentration was significantly higher at near-shore sites than that at open water sites. The mean COD concentrations were significantly higher in the spring and summer than in the winter and autumn. The lowest annual mean COD concentration appeared in 2009, which could be attributed to improvements in water quality management and high rainfall. The COD concentrations in all four seasons were strongly correlated with phytoplankton pigment, suggesting that extracellular release of COD from phytoplankton was an important COD source. The correlation coefficients between the COD and phytoplankton pigment concentrations were higher in the spring, summer, and autumn than in the winter, showing a more important contribution of phytoplankton degradation to COD in the algal bloom season than in the non-algal bloom season. These new data on the temporal and spatial characteristics of the COD in Lake Taihu will be crucial for developing future strategies for water quality management. Springer Science+Business Media B.V., 2011 Chemical oxygen demand nationallicence Correlation analysis nationallicence Lake Taihu nationallicence Spatial and temporal variations nationallicence Yin Yan Taihu Lake Laboratory Ecosystem Research Station, State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 210008, Nanjing, China aut Zhang Yunlin Taihu Lake Laboratory Ecosystem Research Station, State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 210008, Nanjing, China aut Liu Xiaohan Taihu Lake Laboratory Ecosystem Research Station, State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 210008, Nanjing, China aut Zhu Guangwei Taihu Lake Laboratory Ecosystem Research Station, State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 210008, Nanjing, China aut Qin Boqianq Taihu Lake Laboratory Ecosystem Research Station, State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 210008, Nanjing, China aut Shi Zhiqiang Taihu Lake Laboratory Ecosystem Research Station, State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 210008, Nanjing, China aut Feng Longqing Taihu Lake Laboratory Ecosystem Research Station, State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 210008, Nanjing, China aut Hydrobiologia Springer Netherlands 665/1(2011-05-01), 129-141 0018-8158 665:1<129 2011 665 10750 https://doi.org/10.1007/s10750-011-0610-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-011-0610-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yin Yan Taihu Lake Laboratory Ecosystem Research Station, State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 210008, Nanjing, China aut NATIONALLICENCE 700 1- Zhang Yunlin Taihu Lake Laboratory Ecosystem Research Station, State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 210008, Nanjing, China aut NATIONALLICENCE 700 1- Liu Xiaohan Taihu Lake Laboratory Ecosystem Research Station, State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 210008, Nanjing, China aut NATIONALLICENCE 700 1- Zhu Guangwei Taihu Lake Laboratory Ecosystem Research Station, State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 210008, Nanjing, China aut NATIONALLICENCE 700 1- Qin Boqianq Taihu Lake Laboratory Ecosystem Research Station, State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 210008, Nanjing, China aut NATIONALLICENCE 700 1- Shi Zhiqiang Taihu Lake Laboratory Ecosystem Research Station, State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 210008, Nanjing, China aut NATIONALLICENCE 700 1- Feng Longqing Taihu Lake Laboratory Ecosystem Research Station, State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 210008, Nanjing, China aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 665/1(2011-05-01), 129-141 0018-8158 665:1<129 2011 665 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer