Diffusive nutrient flux at the sediment—water interface in Suma Park Reservoir, Australia

Chowdhury, M. Y.; Bakri, Dhia Al

doi:10.1623/hysj.51.1.144

Cited by 35 publications

(14 citation statements)

References 21 publications

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“…8). Several other studies also support that phenomenon (Kisand and Nõges 2003;Chowdhury and Bakri 2006). The phosphate concentration in pore water reaches the peak at the top of the sediment, which was the same between these two methods (traditional Fick's law method or modified method-DGT) (Fig.…”

Section: Discussionsupporting

confidence: 61%

Estimating internal P loading in a deep water reservoir of northern China using three different methods

Qin

Zeng

Zhang

et al. 2016

Environ Sci Pollut Res

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Much attention had been paid to reducing external loading of nutrients to improve water quality, while internal loading from sediment, which has been largely neglected, is also an important source for water eutrophication. The internal load in deep lakes or reservoirs is not easy to be detected and be quantified. In this study, three different methods (mass balance method, Fick's law, and regression equation) were combined to calculate the gross or/and net P release from sediment using limited data. Our results indicated that (1) ); (2) Hot periods of sediment releasing were suggested to occur from March to April and from August to September, which correspond to periods of high risks of algae blooms. The remaining months of the year were shown as net nutrient retention; (3) for the whole region, Baihedam and Chaohekuqu were identified as zones with a higher possibility to release P from sediment. (4) P loading to the Miyun Reservoir was greater in the inflow than in the outflow, suggesting a portion of the inflow P load was retained in the water or sediment; hence, release of sediment P may continue to be a major source of phosphorus in the future.

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Section: Discussionsupporting

confidence: 61%

Estimating internal P loading in a deep water reservoir of northern China using three different methods

Qin

Zeng

Zhang

et al. 2016

Environ Sci Pollut Res

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“…N and P were regarded as the limiting factors to the density of aquatic organisms and the main reduction objects especially for the cultural eutrophic lakes (Golterman 2001;Banaszuk and Wysocka-Czubaszek 2005;Chowdhury and Bakri 2006). A major proportion of the anthropogenic nutrients could be stored in the bottom sediment by hydrodynamism and biogeochemistry processes (Shumilin et al 2005;Castro-González and Méndez-Armenta 2008), and the internal nutrient release had been one of the main sources of eutrophication besides the external input (Søndergaard et al 2003;Nixdorf and Deneke 2004).…”

Section: Introductionmentioning

confidence: 99%

Assessment of nutrients and heavy metals enrichment in surface sediments from Taihu Lake, a eutrophic shallow lake in China

Yuan

Shen

Liu

et al. 2010

Environ Geochem Health

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Concentrations of the nutrients (TN and TP), phosphorus fractions and heavy metals (Co, Cr, Cu, Mn, Ni, Pb, Sr, Ti, V, Zn and Hg) in 40 surface sediment samples collected from Taihu Lake, a eutrophic shallow lake in China, were determined. The results showed that the northwest region of the lake possessed higher concentrations of TN and TP, as well as the similar spatial distribution trend in the water column. This should be related to excessive anthropogenic input from industrial effluents and domestic sewage in surrounding areas. Similarly, the concentrations of P fractions exhibited significant regularity. In addition, except for Sr showing low concentration, the rest of the heavy metals in the surface sediments had two- to four-folds of magnitude of the concentrations compared with the reference values in earth's crust. In the past decade, concentrations of heavy metals had undergone different levels of variations. Principal component analysis (PCA) and enrichment factors (EFs) of the compositional data aiming at heavy metals showed that Taihu Lake was slightly exposing to heavy metal contamination except Sr. High concentrations of heavy metals were ascribed to the discharge of untreated and partially treated industrial waste water via rivers. Co, Cr, Cu, Mn, Ni, Pb, V and Zn positively correlated with each other (R = 0.78-0.92), that indicated they had analogous sources and/or kindred geochemistry characteristics. Differing from nutrients, randomness in the space indicated that heavy metals had a complex distribution.

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“…'Peepers' (dialysis samplers, consisting of a vertical array of cells, covered by a dialysis membrane) have also been used for in situ sampling of sediment porewaters for solute measurement (e.g. Teasdale et al, 1995;Chowdhury and Al Bakri, 2006). However, comparison of the performance of DET and peeper solute samplers (Harper et al, 1997) indicated that DET offers major advantages of (i) greater accuracy at higher resolution than peepers (provided sufficient analyte is present in the DET gel); (ii) much more rapid equilibration responses (experimental observed equilibration times were a few hours for DET, compared with 2-3 weeks for peepers); (iii) easier handling, as the solute is contained in a solid phase gel, facilitating simple probe construction.…”

Section: Introductionmentioning

confidence: 99%

Measurement of soluble reactive phosphorus concentration profiles and fluxes in river-bed sediments using DET gel probes

Jarvie

Mortimer

Palmer-Felgate

et al. 2008

Journal of Hydrology

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Diffusive nutrient flux at the sediment—water interface in Suma Park Reservoir, Australia

Cited by 35 publications

References 21 publications

Estimating internal P loading in a deep water reservoir of northern China using three different methods

Estimating internal P loading in a deep water reservoir of northern China using three different methods

Assessment of nutrients and heavy metals enrichment in surface sediments from Taihu Lake, a eutrophic shallow lake in China

Measurement of soluble reactive phosphorus concentration profiles and fluxes in river-bed sediments using DET gel probes

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