Water quality of Lugu Lake: Changes, causes and measurements

Diatom Seasonality and Sedimentation in a Subtropical Alpine Lake (Lugu Hu, Yunnan-Sichuan, Southwest China)

“…The terrestrial vegetation in the lake catchment area is dominated by deciduous broadleaved forest, mixed Cyclobalanopsis/Acer stands, and Pinus yunnanensis. Today, the lake is oligo-mesotrophic with secchi depth of 15 and 11 m in summer and autumn, respectively, and total phosphorus (TP) concentration of 28 μg L -1 in the open-water area but is undergoing cultural eutrophication due to tourist development and improved agricultural techniques in the catchment (Wu et al, 2008;Zhang et al, 2013).…”

Responses of Aquatic Ecosystems to Environmental Changes in Finland and China

“…The statistically significant diatom zones are marked with a solid line. The black bars indicate roughly the approximate variability of TP and TN values of Lake Lugu according to Whitmore et al (1997), Wang and Dou (1998), Wu et al (2008), and Yu et al (2010). The sites are arranged according to their catchment type: Forested catchments (A) Jerisjärvi, (B) Lake Lugu; Agricultural catchments, (C) Pyhäjärvi, (D) Lake Taibai; and Urban catchments, (E) Laajalahti, (F) Lake Taihu.…”

“…This, in turn, enables the increase of the relative abundance of C. ocellata and A. formosa as they are small diatoms with very slow sinking velocities (e.g., Canter and Lund, 1948) compared to the much bigger and heavier C. rhomboideo-elliptica. The effect of the increased nutrient concentrations since 2005 can be seen as a decrease in the abundance of Pseudostaurosira brevistriata and an increase in Cyclostephanus dubius (e.g., Wu et al, 2008;Chen et al, 2014). As the anthropogenic impact on Lake Lugu has been very modest before the last two decades, climate warming has most probably been the most important environmental variable affecting the lake (Chen et al, 2014).…”

Determination of Water Quality Parameters and Heavy Metal Content in Surface Water of Çiğdem Pond (Kastamonu/Turkey)

“…Surface water pollution by heavy metals is increasingly common environmental problem all over the world (Khan et al, 2013;Wu et al, 2008) because the ponds and lakes are primarily affected from the pollution. The rapid changes in physical and chemical parameters of the surface waters lead to deterioration of the environment's balance in aquatic environments.…”