Attenuation of Photosynthetically Available Radiation by Chlorophyll, Chromophoric Dissolved Organic Matter, and Tripton in Lake Donghu, China

Carbon source/sink function of a subtropical, eutrophic lake determined from an overall mass balance and a gas exchange and carbon burial balance

“…Fish grazing significantly impacts the lake's plankton (Xie and Liu, 2001). The Secchi disk depth is about 0.5 m and hence the microphytobenthos cannot receive enough photosynthetically available radiation (PAR) and the primary production is negligible (Yang et al, 2005a).…”

Chromophoric dissolved organic matter optical characteristics and spatial distribution in the lakes of the middle reaches of the Yangtze River

“…CDOM 吸收系数与波长近似呈指数关系 [4,11] : [4,[6][7]12] . [12,14] , 但 Boss E 在 对海岸带水体进行光学特性研究时发现所研究海域内悬浮泥沙吸收系数与 CDOM 吸收系数呈现共同变 化趋势, 并以此认为沉积物的再悬浮是水体 CDOM 的来源之一 [15] . 在本研究中, 需要进一步高精度分层 采样分析实验, 来验证洪湖 CDOM 是否源自湖泊底质的再悬浮.…”

Spatial pattern of K<sub>d</sub>(PAR) and its relationship with light absorption of optically active components in inland waters across China

“…Absorption and scattering by these OACs are the main attenuation factors of Kd (PAR) in the water (Budhiman & Suhyb Salama & Vekerdy & Verhoef, 2012;Zheng et al, 2016). The relative contribution of OACs to Kd(PAR) have researched in numerous studies previously in lakes, estuaries and offshore waters (Brandao & Brighenti & Staehr & Barbosa & Bezerra-Neto, 2017;Lund-Hansen, 2004;Phlips, Lynch, and Badylak, 1995;V-Balogh, Nemeth, and Voros, 2009;Yamaguchi & Katahira & Ichimi & Tada, 2013), there is general agreement by now that inorganic suspended particles had the decisive effect on light attenuation in turbid waters (Brandao et al, 2017;Yang & Xie & Xing & Ni & Guo, 2005;Zhang & Zhang & Ma & Feng & Le, 2007a). In transparent marine and freshwater systems, phytoplankton is also an important component in PAR attenuation (Laurion & Ventura & Catalan & Psenner & Sommaruga, 2000;Lund-Hansen, 2004).…”

“…Although Kd(PAR) characterization has been carried out in various aquatic environments, including freshwater, estuaries, coastal water, and open ocean water (Belzile et al, 2002;Cunningham, Ramage, and McKee, 2013;Frankovich, Rudnick, and Fourqurean, 2017;Lund-Hansen, 2004;Zhang et al, 2007a), few studies have been performed in the extremely turbid waters and plateau water with strong ultraviolet radiation (Ma et al, 2016;Shi et al, 2014;Song et al, 2017). In transparent marine and freshwater systems, phytoplankton was suggested to be an important component in light attenuation (Brandao et al, 2017;Yang et al, 2005). However, in turbid inland waters, the components of OACs vary independently (Matsushita & Yang & Yu & Oyama & Yoshimura & Fukushima, 2015;, and studies have pointed out that the components of OACs had large spatial and temporal variations in turbid inland waters (Oliver & (Brandao et al, 2017;Cunningham et al, 2013;Laurion et al, 2000).…”