Environmental factors which influence the sink of silica in the limnetic system of the large monomictic Lake Biwa and its watershed in Japan

Goto, Nobuo; Iwata, Takuro; Akatsuka, Tetsuji; Ishikawa, Masakazu; Kihira, Masaki; Azumi, Hisayuki; Anbutsu, Kaori; Mitamura, Osamu

doi:10.1007/s10533-007-9115-1

Cited by 14 publications

(7 citation statements)

References 36 publications

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“… b References: (1) Conley et al [2000], (2) Hecky et al [1996], (3) Schelske [1985], (4) Likens [1985], (5) Cornwell and Banahan [1992], (6) Welch and Legault [1986], (7) Bailey ‐ Watts et al [1989], (8) Smith [1974], (9) Triplett et al [2008], (10) Teodoru and Wehrli [2005], (11) Koszelnik and Tomaszek [2008], (12) Garnier et al [1999], (13) Hofmann et al [2002], (14) Goto et al [2007], (15) Cook et al [2010], (16) Geddes [1984], (17) Wang et al [2010]. …”

Section: Methodsmentioning

confidence: 99%

Global importance, patterns, and controls of dissolved silica retention in lakes and reservoirs

Harrison

Frings

Beusen

et al. 2012

Global Biogeochemical Cycles

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[1] Lentic water bodies (lakes and reservoirs) offer favorable conditions for silica (SiO 2 ) burial in sediments. Recent global estimates suggest that (1) lentic SiO 2 trapping is a globally important SiO 2 flux, and (2) through reservoir construction, humans have dramatically altered river dissolved SiO 2 (DSi) transport and coastal DSi delivery. However, regional to global scale patterns and controls of DSi removal in lentic systems are poorly constrained. Here we use 27 published lake and reservoir DSi budgets to develop insights into patterns and controls of lentic DSi retention and to develop a new, spatially explicit, global model of lentic DSi removal called SiRReLa (Silica Retention in Reservoirs and Lakes). In our analysis, lentic DSi removal (kg SiO 2 yr À1 ) was significantly and positively related to DSi loading (P < 0.0001; r 2 = 0.98), and DSi removal efficiency was significantly and positively related to water residence time (P < 0.0001; r 2 = 0.68). In addition, DSi settling rates were, on average, 6.5-fold higher in eutrophic systems than in non-eutrophic systems (median settling velocities: 11.1 and 1.7 m yr À1 for eutrophic and non-eutrophic systems, respectively; P < 0.01). SiRReLa, which incorporates these insights, performed quite well in predicting both total DSi removal (kg SiO 2 yr À1 ; Nash Sutcliffe Efficiency (N.S.E) = 0.88) and DSi removal efficiency (% Si removed; N.S.E. = 0.75), with no detectable bias in the model. Global application of SiRReLa confirms that lentic systems are important sinks for DSi, removing 89.1 Tg DSi yr À1 from watersheds globally, roughly 19-38% of all DSi inputs to surface waters. Small lakes and reservoirs (<50 km 2 ) were critical in the analysis, retaining 81% (72 Tg DSi yr À1 ) of the globally retained total. Furthermore, although reservoirs occupy just 6% of the global lentic surface area, they retained approximately 35% of the total DSi removed by lentic systems. Regional hot spots for lentic DSi removal were identified and imply that lentic systems can remove the vast majority of DSi across a large fraction of Earth's land surface. Finally, a sensitivity analysis indicates that future improvements in DSi trapping and transport models should focus on improving estimates of DSi input to surface waters.

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Section: Methodsmentioning

confidence: 99%

Global importance, patterns, and controls of dissolved silica retention in lakes and reservoirs

Harrison

Frings

Beusen

et al. 2012

Global Biogeochemical Cycles

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“…In addition, dissolved Si concentrations of the mainstream decreased from 155 lmol/l (HJ36) to 141 lmol/l (HJ49) at the Danjiangkou Dam, even when it is joined by tributaries of the Danjiang River (205 lmol/l, HJ47) and Laoguan River (194 lmol/l, HJ48) with high dissolved Si concentration. This seems to indicate the influence of biologic processes on the water chemistry in the Danjiangkou Reservoir; diatoms use Si to build their shells in stagnant waters (Qin et al 2006;Goto et al 2007). …”

Section: Major Elementsmentioning

confidence: 99%

Chemical and Strontium Isotopic Compositions of the Hanjiang Basin Rivers in China: Anthropogenic Impacts and Chemical Weathering

Shi

Tang

et al. 2011

Aquat Geochem

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The Hanjiang River, the largest tributaries of the Changjiang (Yangtze) River, is the water source area of the Middle Route of China's South-to-North Water Transfer Project. The chemical and strontium isotopic compositions of the river waters are determined with the main purpose of understanding the contribution of chemical weathering processes and anthropogenic inputs on river solutes, as well as the associated CO 2 consumption in the carbonate-dominated basin. The major ion compositions of the Hanjiang River waters are characterized by the dominance of Ca 2? and HCO 3 -, followed by Mg 2? and SO 4 2-. The increase in TDS and major anions (Cl -, NO 3 -, and SO 4 2-) concentrations from upstream to downstream is ascribed to both extensive influences from agriculture and domestic activities over the Hanjiang basin. The chemical and Sr isotopic analyses indicate that three major weathering sources (dolomite, limestone, and silicates) contribute to the total dissolved loads. The contributions of the different end-members to the dissolved load are calculated with the mass balance approach. The calculated results show that the dissolved load is dominated by carbonates weathering, the contribution of which accounts for about 79.4% for the Hanjiang River. The silicate weathering and anthropogenic contributions are approximately 12.3 and 6.87%, respectively. The total TDS fluxes from chemical weathering calculated for the water source area (the upper Hanjiang basin) and the whole Hanjiang basin are approximately 3.8 9 10 6 and 6.1 9 10 6 ton/year, respectively. The total chemical weathering (carbonate and silicate) rate for the Hanjiang basin is approximately 38.5 ton/km 2 /year or 18.6 mm/k year, which is higher than global mean values. The fluxes of CO 2 consumption by carbonate and silicate weathering are estimated to be 56.4 9 10 9 and 12.9 9 10 9 mol/year, respectively.

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“…The European Water Framework Directive (WFD) has listed diatoms as indicators for some time (European Union, ). Researchers from the United States (Nelson et al, ; Potapova and Charles, ) and Japan (Goto et al, ) also recommended benthic diatoms as an appropriate approach in monitoring of eutrophication and plenty of diatom indices were proposed and successfully applied, such as the Biological Diatom Index (IBD, Prygiel and Coste, ), the Specific Pollution Index (IPS, CEMAGREF, ), the Trophic Diatom Index (TDI, Kelly and Whitton, ), and the Diatom‐based eutrophication/pollution Index (EPID, Dell'Uomo, ) (Soininen, ; Tan et al, ).…”

Section: Introductionmentioning

confidence: 99%

Comparative responses of dominant and subordinate periphytic diatom species to environmental gradients in Donghu Lake, China

Chen

Wang

Xia

et al. 2016

Internat. Rev. Hydrobiol.

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An annual investigation on periphytic diatoms and physicochemical parameters was performed in Donghu Lake, China, to explore a suitable method to differentiate the dominant and subordinate taxa, and how they responded to the change of environmental factors. The results showed that: (1) a combined consideration of species frequency of occurrence and relative abundance for defining the dominant index was more appropriate than using solely relative abundance; (2) the dominant taxa Fragilaria capucina var. vaucheriae (Kützing) Lange‐Bertalot and Melosira varians Agardh responded insensitively to the environmental factors, whereas the subordinate species Fragilaria capucina Desmazieres var. capucina, Nitzschia amphibia Grunow, Achnanthidium exiguum (Grunow) Czarnecki and Melosira italica (Ehrenberg) Kützing showed the potential to be indicators; F. capucina var. radians (Kützing) Lange‐Bertalot increased along the gradient of higher water temperature (WT) and nutrients concentration, however, Fragilaria bidens Heiberg and Cymbella affinis Kützing were affected in the opposite direction. Our findings revealed that periphytic diatoms varied seasonally and were useful for assessing water quality of different trophic status. Especially the subordinate species showed the potential to be better indicators than the dominant species in Donghu Lake.

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Environmental factors which influence the sink of silica in the limnetic system of the large monomictic Lake Biwa and its watershed in Japan

Cited by 14 publications

References 36 publications

Global importance, patterns, and controls of dissolved silica retention in lakes and reservoirs

Global importance, patterns, and controls of dissolved silica retention in lakes and reservoirs

Chemical and Strontium Isotopic Compositions of the Hanjiang Basin Rivers in China: Anthropogenic Impacts and Chemical Weathering

Comparative responses of dominant and subordinate periphytic diatom species to environmental gradients in Donghu Lake, China

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