Photoproduction of dissolved inorganic carbon in temperate and tropical lakes – dependence on wavelength band and dissolved organic carbon concentration

被引:10
作者
Wilhelm Granéli*
Måns Lindell
Bias Marçal de Faria
Francisco de Assis Esteves
机构
[1] Lund University,Dept. of Ecology/Limnology
[2] Ecology Building,Biological Institute, Dep. of Ecology, Limnology Laboratory
[3] Rio de Janeiro Federal University,undefined
[4] Ilha do Fundao,undefined
来源
Biogeochemistry | 1998年 / 43卷
关键词
DOC; humic; lake; photooxidation; ultraviolet; UV-B;
D O I
暂无
中图分类号
学科分类号
摘要
We have evaluated photoeffects of UV-B, UV-A and PAR radiation on dissolved organic matter (DOM). Photochemical production of dissolved inorganic carbon (DIC) was measured in sterile lake water from Sweden and Brazil after 6 hours of sun exposure. Tubes were exposed to four solar radiation regimes: Full-radiation, Full-radiation minus UV-B, Full-radiation minus UV-B and UV-A (PAR) and darkness.
引用
收藏
页码:175 / 195
页数:20
相关论文
共 61 条
[1]  
Amon RMW(1996)Bacterial utilization of different size classes of dissolved organic matter Limnol. Oceanogr. 41 41-51
[2]  
Benner R(1996)Sequential photochemical and microbial degradation of refractory dissolved organic matter in a humic freshwater system Arch. Hydrobiol. Spec. Issues Advanc. Limnol. 48 133-141
[3]  
Bertilsson S(1993)Solar UV-radiation penetration and photodegradation of humic substances in peaty lake water Limnol. Oceanogr. 38 1072-1076
[4]  
Allard B(1993)Major role of ultraviolet-B in controlling bacterioplankton growth in the surface layer of the ocean Nature 361 717-719
[5]  
De Haan H(1994)Measurements of UV-B radiation in two freshwater lakes: An instrument comparison Arch. Hydrobiol. Beih. Ergebn. Limnol. 43 71-99
[6]  
Herndl GJ(1990)Formation of carbonyl compounds from UV-induced photodegradation of humic substances in natural waters: Fate of riverine carbon in the sea Limnol. Oceanogr. 35 1503-1515
[7]  
Müller-Niklas G(1995)Enhanced bacterial growth in response to photochemical transformation of dissolved organic matter Limnol. Oceanogr. 40 195-199
[8]  
Frick J(1996)Effects of solar radiation on bacterial growth in lakes of different humic content Aquatic Microb. Ecol. 11 135-141
[9]  
Kirk JTO(1995)Photochemical production of dissolved inorganic carbon from terrestrial organic matter: Significance to the oceanic organic carbon cycle Geophysical Research Letters 22 417-420
[10]  
Hargreaves BR(1991)Photochemical degradation of dissolved organic carbon and its impact on the oceanic carbon cycle Nature 353 60-62