Spatial Variation in the Distribution of Phosphorus Species in the Surficial Sediments of Canadohta Lake, Pennsylvania; Implications for Internal Phosphorus Loading Estimates

The concentrations of total, loosely sorbed, metal-bound, calcium-bound, and organic phosphorus, iron, and organic matter (loss on ignition) were determined for 71 surface sediment samples from Canadohta Lake, Pennsylvania. The results indicate that lake sediments can be highly variable with respect to these parameters. Most of these parameters were highly intercorrelated, and some general patterns appear to exist based on these and previously published data. Given the highly variable nature of sediment quality, particularly among these parameters which have been shown to be good predictors of sediment phosphorus release rates, estimates of internal phosphorus loading based on a few incubated cores taken from the deepest area of a lake may contain serious errors. We recommend that sediment heterogeneity be assessed in order to determine an appropriate number and distribution of cores to be incubated for internal loading estimates.

Download Full-text

Relationship between Anaerobic Sediment Phosphorus Release Rates and Sedimentary Phosphorus Species

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/f89-055 ◽

1989 ◽

Vol 46 (3) ◽

pp. 416-419 ◽

Cited By ~ 19

Author(s):

M. L. Ostrofsky ◽

D. A. Osborne ◽

T. J. Zebulske

Keyword(s):

Regression Analysis ◽

Multiple Regression Analysis ◽

Multiple Regression ◽

Phosphorus Release ◽

Phosphorus Loading ◽

Sediment Characteristics ◽

Release Rates ◽

Phosphorus Species ◽

Internal Phosphorus Loading ◽

High Concentrations

Rates of anaerobic phosphorus release from the sediments of 57 lakes of varying trophy and sediment characteristics were measured under controlled laboratory conditions to test the hypothesis that internal phosphorus loading was a function of sediment phosphorus species. Simple regression analyses indicated that no single species can predict more than 18% of the variability in release rates. Multiple regression analysis using both water and sediment characteristics were able to explain 51% of the variation. A model based on stepwise multiple regression analysis suggests that lakes most prone to high rates of internal phosphorus loading will be alkaline with high concentrations of spring overturn total phosphorus, and with sediments characterized by high concentrations of iron-bound phosphorus, and low concentrations of organic matter.

Download Full-text

Internal phosphorus loading as the response to complete and then limited sustainable restoration of a shallow lake

Annales de Limnologie - International Journal of Limnology ◽

10.1051/limn/2019003 ◽

2019 ◽

Vol 55 ◽

pp. 4

Author(s):

Katarzyna Kowalczewska-Madura ◽

Renata Dondajewska ◽

Ryszard Gołdyn ◽

Joanna Rosińska ◽

Stanisław Podsiadłowski

Keyword(s):

Bottom Sediments ◽

Littoral Zone ◽

Ecological Status ◽

Phosphorus Release ◽

Phosphorus Loading ◽

P Release ◽

Spatial Changes ◽

Iron Sulphate ◽

Internal Phosphorus Loading ◽

Profundal Zone

The urban Swarzędzkie Lake, into which sewage had been diverted many years ago, was still characterised by low ecological status. Three restoration methods were used in order to improve the water quality, i.e. aeration of the waters overlying the bottom sediments, inactivation of phosphorus in the water column with iron sulphate and magnesium chloride and biomanipulation with pike stocking. The aim of the research was to define seasonal and spatial changes of phosphorus internal loading from bottom sediments and to compare this with previous years. We also considered changes in the process of P release when the restoration treatments were limited after 3 yr from 3 methods to 1 method. The highest phosphorus release from bottom sediments was found in the profundal zone, where in summer periods it would reach up to 29.2 mgP m−2 day−1. The lowest P release was observed in the littoral zone, down to a depth of 3 m, where it did not exceed 10.0 mgP m−2 day−1. 31% of the whole load of P released from the bottom sediments was originated from this zone. The research showed an increase of phosphorus release in the first years of restoration treatment and a systematic decrease at all stations in the following years.

Download Full-text

Internal phosphorus loading from bottom sediments of a shallow preliminary reservoir

Oceanological and Hydrobiological Studies ◽

10.2478/v10009-007-0043-0 ◽

2008 ◽

Vol 37 (2) ◽

Cited By ~ 10

Author(s):

Renata Dondajewska

Keyword(s):

Bottom Sediments ◽

Seasonal Variability ◽

Sediment Cores ◽

Phosphorus Release ◽

Ex Situ ◽

Phosphorus Loading ◽

Internal Phosphorus Loading

Internal phosphorus loading from bottom sediments of a shallow preliminary reservoirThe aim of the studies done in a shallow preliminary reservoir (western Poland) was to determine the intensity and seasonal variability of phosphorus release from bottom sediments. Ex situ studies were done using intact sediment cores taken in succeeding seasons at 3 research stations. The highest phosphorus loading was observed in spring (May and April), both in 2005 and 2006. The range of loading was between 23.7 and 66.6 mgP m

Download Full-text

Studies on Activity of Alkaline Phosphatase and Phosphorus Speciation in Sediments from Lake Hongfeng, China

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.113-116.412 ◽

2010 ◽

Vol 113-116 ◽

pp. 412-415

Author(s):

Jia Jun Deng ◽

Cui Hong Jiang ◽

Ji Wei Hu ◽

Xiong Hui Wei ◽

Xian Fei Huang ◽

...

Keyword(s):

Alkaline Phosphatase ◽

Organic Phosphorus ◽

Dry Weight ◽

Inorganic Phosphorus ◽

Phosphorus Release ◽

Guizhou Province ◽

Phosphorus Loading ◽

Significant Activity ◽

Average Value ◽

High Level

Environmentally significant activity of alkaline phosphatase (APA), phosphorus loading and its species were determined in 14 sediment samples from Lake Hongfeng, one of the key drinking-water sources in Guizhou Province, China. The results of this research indicates that APA presented a high level and notable fluctuations with spatial variations in sediments, ranging from 8.712×10-5 to 25.667×10-5 mol of p-nitrophenol g−1•h-1, and the average value of total phosphorus (TP) in sediments from the lake was 1129.81 mg/kg (dry weight). The content of inorganic phosphorus (IP) was higher than that of organic phosphorus (OP), and the content of the iron/aluminum-bound phosphorus (Fe/Al-P) with phosphorus release risk was also high. In addition, the Pearson’s correlation analysis shows various correlations between APA and Ca-P, Fe/Al-P, OP and IP.

Download Full-text

Effects of algae and hydrophytes on the inorganic phosphorus pool of shallow hypereutrophic Lake Taihu

Water Science & Technology Water Supply ◽

10.2166/ws.2021.276 ◽

2021 ◽

Author(s):

Xiaojun Li ◽

Xiaoguang Xu ◽

Yanping Zhao ◽

Ruiming Han ◽

Guoxiang Wang

Keyword(s):

Organic Phosphorus ◽

Lake Taihu ◽

Pearson Correlation ◽

Eutrophic Lake ◽

Phosphorus Release ◽

Phosphorus Loading ◽

Lake Ecosystem ◽

Phosphorus Cycle ◽

Contamination Assessment ◽

Sediment Phosphorus

Abstract Sedimentary phosphorus is a crucially potential source of phosphorus in the eutrophic lake ecosystem. Different ecological types are supposed to affect the presence and variation of sediment phosphorus. On the basis of field investigations, the total sediment phosphorus load in Zhushan Bay was 1,457.48 mg/kg, nearly four times that of the hydrophyte-dominated area. Thereinto, 41.1% was in the form of iron and aluminum-bound phosphorus, which explicitly indicated the phosphorus contamination there. Analytical methods such as Pearson correlation, contamination assessment and principle component analysis were conducted to find out that ‘contamination’ was not equivalent to ‘release risk’. The contamination classification of East Lake Taihu was ‘clean’ in general. However, 63.3% of the total phosphorus could be mobilized under certain conditions. Therefore, light phosphorus loading does not equal to less release risk. In the long run, the implicit phosphorus release by the activation of organic phosphorus in hydrophytic areas needs close attention. This study provides a reference to understand the influence of hydrophytes and algae on the phosphorus cycle of sediment.

Download Full-text

Ferric Nitrate Suppresses Internal Phosphorus Loading in Municipal River

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.393-395.1242 ◽

2011 ◽

Vol 393-395 ◽

pp. 1242-1246

Author(s):

Jian Jun Huang ◽

Yu Hong Li ◽

Ya Jie Gao

Keyword(s):

Electron Acceptor ◽

River Sediment ◽

Phosphorus Release ◽

Nitrogen Budget ◽

Phosphorus Loading ◽

Ferric Nitrate ◽

Laboratory Studies ◽

Overlying Water ◽

Internal Phosphorus Loading

The application of nitrate is an accepted procedure to manage eutrophication municipal rivers by controlling the phosphorus release from sediments into overlying water and offering electron acceptor for microorganism metabolism. In situ laboratory studies were carried out in simulated reactors to evaluate the potential of ferric nitrate for remediation municipal river sediment. Ferric nitrate could greatly improve the ability of bio-treatment properties for sediment. Two dose remediation experiment of ferric nitrate (70g and 35g per square meter) was carried out lasting 28 weeks. Observations showed that ferric nitrate could suppressed the release of phosphorus from the sediments. At the same time the TN concentration could reduce to common level compared to blank reactor by denitrification. As a whole the dose of 35g per square meter ferric nitrate is better. The results suggest that knowledge of a municipal river’s nitrogen budget may be a useful tool in the design of municipal river remediation efforts.

Download Full-text