Vertical phosphorus migration in biosolids-amended soils : concentrations in soils and leachates.

Land Application ◽

Soil Leachate ◽

Different Depths ◽

Receiving Waters ◽

Reactive Phosphorus ◽

Biosolids Application

The impacts of biosolids land application on soil phosphorus and subsequent transfer to aquatic ecosystems in the condition of the minimal slope were assessed. Soil, representing typical "Non response" Ontario soil, was amended with anaerobically digested biosolids at a rate of 8 tonnes/ha. Over five months, soil samples from two different depths were sequentially fractionated to determine various inorganic and organic phosphorus pools in order to evaluate phosphorus vertical migration within a soil profile. Soil leachate was analyzed for soluble reactive phosphorus and added to the aquariums mimicking receiving surface waters. Water from aquariums was tested for the presence of eutrophication. The results indicated that biosolids application did not significantly affect phosphorus concentrations in soil and did not cause phosphorus vertical migration. The concentrations of soluble reactive phosphorus also were not affected by biosolids. No signs of eutrophication were observed in receiving waters.

Vertical phosphorus migration in a biosolids-amended sandy loam soil in laboratory settings: concentrations in soils and leachates

10.32920/14638197 ◽

2021 ◽

Author(s):

Yulia Markunas ◽

Vadim Bostan ◽

Andrew Laursen ◽

Michael Payne ◽

Lynda McCarthy

Keyword(s):

Vertical Migration ◽

Sandy Loam ◽

Organic Phosphorus ◽

Soil Phosphorus ◽

Dry Weight ◽

Land Application ◽

Soil Leachate ◽

Laboratory Setup ◽

The impacts of biosolids land application on soil phosphorus and subsequent vertical migration to tile drainage were assessed in a laboratory setup. Soil, representing typical “nonresponse” Ontario soil as specified by Ontario Ministry of Agriculture, Food, and Rural Affairs (OMAFRA), was amended with anaerobically digested biosolids at a rate of 8Mgha−1 (dry weight). Over five months, these amended soil samples from two different depths were sequentially fractionated to determine various inorganic and organic phosphorus pools in order to evaluate phosphorus vertical migration within a soil profile. Soil leachate was analyzed for soluble reactive phosphorus.The results indicated that biosolids application did not significantly affect phosphorus concentrations in soil and did not cause phosphorus vertical migration. The concentrations of soluble reactive phosphorus also were not significantly affected by biosolids.

Vertical Phosphorus Migration in a Biosolids-Amended Sandy Loam Soil in Laboratory Settings: Concentrations in Soils and Leachates

Applied and Environmental Soil Science ◽

10.1155/2016/3460939 ◽

2016 ◽

Vol 2016 ◽

pp. 1-8

Author(s):

Yulia Markunas ◽

Vadim Bostan ◽

Andrew Laursen ◽

Michael Payne ◽

Lynda McCarthy

Keyword(s):

Vertical Migration ◽

Sandy Loam ◽

Organic Phosphorus ◽

Soil Phosphorus ◽

Dry Weight ◽

Land Application ◽

Soil Leachate ◽

Laboratory Setup ◽

The impacts of biosolids land application on soil phosphorus and subsequent vertical migration to tile drainage were assessed in a laboratory setup. Soil, representing typical “nonresponse” Ontario soil as specified by Ontario Ministry of Agriculture, Food, and Rural Affairs (OMAFRA), was amended with anaerobically digested biosolids at a rate of 8 Mg ha−1 (dry weight). Over five months, these amended soil samples from two different depths were sequentially fractionated to determine various inorganic and organic phosphorus pools in order to evaluate phosphorus vertical migration within a soil profile. Soil leachate was analyzed for soluble reactive phosphorus. The results indicated that biosolids application did not significantly affect phosphorus concentrations in soil and did not cause phosphorus vertical migration. The concentrations of soluble reactive phosphorus also were not significantly affected by biosolids.

Vertical phosphorus migration in a biosolids-amended sandy loam soil in laboratory settings: concentrations in soils and leachates

10.32920/14638197.v1 ◽

2021 ◽

Author(s):

Yulia Markunas ◽

Vadim Bostan ◽

Andrew Laursen ◽

Michael Payne ◽

Lynda McCarthy

Keyword(s):

Vertical Migration ◽

Sandy Loam ◽

Organic Phosphorus ◽

Soil Phosphorus ◽

Dry Weight ◽

Land Application ◽

Soil Leachate ◽

Laboratory Setup ◽

The impacts of biosolids land application on soil phosphorus and subsequent vertical migration to tile drainage were assessed in a laboratory setup. Soil, representing typical “nonresponse” Ontario soil as specified by Ontario Ministry of Agriculture, Food, and Rural Affairs (OMAFRA), was amended with anaerobically digested biosolids at a rate of 8Mgha−1 (dry weight). Over five months, these amended soil samples from two different depths were sequentially fractionated to determine various inorganic and organic phosphorus pools in order to evaluate phosphorus vertical migration within a soil profile. Soil leachate was analyzed for soluble reactive phosphorus.The results indicated that biosolids application did not significantly affect phosphorus concentrations in soil and did not cause phosphorus vertical migration. The concentrations of soluble reactive phosphorus also were not significantly affected by biosolids.

Sediment phosphorus fractionation and flux in a tropical shallow lake

Acta Limnologica Brasiliensia ◽

10.1590/s2179-975x9020 ◽

2021 ◽

Vol 33 ◽

Author(s):

Jéssica Papera ◽

Fabiana Araújo ◽

Vanessa Becker

Keyword(s):

Shallow Lake ◽

Organic Phosphorus ◽

Oxygen Depletion ◽

Phosphorus Fractionation ◽

P Fractions ◽

P Release ◽

Water And Sediment ◽

Mobile Fraction ◽

Abstract: Aim The aim of the present study is to evaluate the potential phosphorus (P) release from the sediment to the water column of a tropical shallow lake in the northeast of Brazil, based on the sediment P fractions and on the flux of P between water and sediment. Methods We used a sequential extraction method to analyse the different P fractions of the sediment of Lake Extremoz. We also carried out a 40-day microcosm experiment to analyse the flux of P between water and sediment. We did so by flooding 200g of sediment from the lake with 800 mL of 1.2 µm filtered lake water in 1 L beakers. Every 5 days we analysed: soluble reactive phosphorus (SRP), total phosphorus (TP), organic phosphorus (Org-P), dissolved oxygen (DO), temperature, and pH of the water. Results The largest fraction of P in the sediment of Lake Extremoz is Refractory-P, which is non-mobile. The main mobile fraction of this lake’s sediment is composed of P bound to Fe and Mn oxides (BD-P) which is redox sensitive. During the P flux experiment, the water was always oxic and with nearly neutral pH, however the temperature increased by almost 4 °C due to the increase of the temperature of the air. SRP, TP and Org-P concentrations in the water had a general decrease in the first 20 days. But, on the second half of the experiment, those concentrations increased and the fluxes of P from sediment to water, mainly Org-P, were positive. Even with this increase in concentrations, indicating a period of P release, overall fluxes were negative. Conclusions The main mobile fraction of the sediment is redox sensitive, therefore it has the potential to be released in case of oxygen depletion. Under current conditions, most of the P released by the sediment is in organic forms, indicating that, in the presence of oxygen, the balance of P between water and sediment is controlled by the effects of organisms on P as well as temperature.

PHOSPHORUS FRACTIONS IN A SOIL SAMPLED AT DIFFERENT DEPTHS AND THE EFFECT OF LIME AND FERTILIZER ON OATS AND CLOVER IN A GREENHOUSE TEST

Canadian Journal of Soil Science ◽

10.4141/cjss60-009 ◽

1960 ◽

Vol 40 (1) ◽

pp. 71-79

Author(s):

H. A. Hamilton ◽

J. R. Lessard

Keyword(s):

Surface Soil ◽

Crop Yields ◽

Organic Phosphorus ◽

Soil Phosphorus ◽

Phosphate Fertilizer ◽

Iron Phosphate ◽

Soil Layers ◽

Surface Samples ◽

Different Depths ◽

Total Soil Phosphorus

Soil samples were collected at four different depths from a virgin soil, and in a region where deep ploughing has been a common practice. Chemical analyses revealed that the sub-surface samples were more highly saturated with bases than were the surface samples. In the 0–6 inch layer the percentage contribution of calcium, aluminium and iron phosphate to total soil phosphorus was 41.1, 10.4 and 2.8 respectively; while, in the 18–24 inch layer the percentages were 88.4, 2.8 and 0.5 respectively. Organic phosphorus decreased with depth.In the greenhouse there were highly significant differences between oat yields on the various layers, the surface soil giving the highest yields. Clover crop yields tended to be better as depth of profile increased. Phosphorus increased oat yields and clover yields on all soil layers. As a result of over-liming in certain instances clover yields were depressed in the absence of applied phosphate fertilizer, whereas oat yields were unaffected.

Phosphorus fractions in biosolids, biosolid-amended soils, runoffs and its impact on primary productivity in aquatic ecosystems

10.32920/ryerson.14644737 ◽

2021 ◽

Author(s):

Aslam Hanief

Keyword(s):

Aquatic Ecosystems ◽

Soil Phosphorus ◽

Land Application ◽

Organic P ◽

Storm Events ◽

Stratified Lakes ◽

P Pools ◽

Physical Chemical ◽

The Impact ◽

Biosolids Application

The impact of land application of biosolids on soil phosphorus (P) and subsequent transfer to aquatic ecosystems were assessed. Boxed reference soils were amended with two biosolids at a rate of 8 dry t/ha. Biosolids and soil samples taken over four months were sequentially fractionated to determine various inorganic and organic P pools. Also, within three weeks of biosolids application, four storm events were simulated and surface runoff and leachate from the soils were collected and analyzed for different P forms. The runoffs and equivalent inorganic nutrient were added to different mesocosms that mimicked stratified lakes. Samples from the mesocosms were periodically collected and analyzed for various physical, chemical and biological parameters. The results indicated that biosolids significantly affect different P pools in soils. Also, P loading from biosolids was expected to drive the mesocosms to hypereutrophication, yet the response was moderately eutrophic, followed by decline in chlorophyll a.

Contrasting Diel Patterns of Vertical Migration in the Dinoflagellate Ceratium hirundinella in Relation to Phosphorus Supply in a North Temperate Reservoir

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/f88-133 ◽

1988 ◽

Vol 45 (6) ◽

pp. 1093-1098 ◽

Cited By ~ 14

Author(s):

W. D. Taylor ◽

J. W. Barko ◽

W. F. James

Keyword(s):

Vertical Migration ◽

Nutrient Content ◽

Phosphorus Limitation ◽

Phosphorus Loading ◽

Water Volume ◽

Mixing Processes ◽

Diel Patterns ◽

Ceratium Hirundinella ◽

Very different diel patterns of vertical migration in Ceratium hirundinella were observed during two midsummer periods of study in a north temperate reservoir. During the first study (29–30 July), Ceratium migrated within a 2-m-deep oxygenated zone, moving upward near to the surface during the day and downward to the oxic–anoxic interface at night. During the second study (7–8 August), Ceratium did not migrate towards the surface during the day. High photosynthetic oxygen production and mixing processes increased oxygen distribution from 2 to 3 m providing Ceratium with access to a significantly greater water volume, with a greater nutrient content. Riverine phosphorus loading during the week prior to the first study was about 10 times greater than during the week prior to the second study. Limiting cell phosphorus concentrations and no measurable soluble reactive phosphorus in the upper (0–3 m) water column suggested a relationship between phosphorus limitation and the cessation of positive phototaxis. Diel patterns of vertical migration in this species may be influenced by episodic variations in phosphorus and/or other nutrient loadings via riverine inputs as interflows to this reservoir.

Phosphorus fractions in biosolids, biosolid-amended soils, runoffs and its impact on primary productivity in aquatic ecosystems

10.32920/ryerson.14644737.v1 ◽

2021 ◽

Author(s):

Aslam Hanief

Keyword(s):

Aquatic Ecosystems ◽

Soil Phosphorus ◽

Land Application ◽

Organic P ◽

Storm Events ◽

Stratified Lakes ◽

P Pools ◽

Physical Chemical ◽

The Impact ◽

Biosolids Application

The impact of land application of biosolids on soil phosphorus (P) and subsequent transfer to aquatic ecosystems were assessed. Boxed reference soils were amended with two biosolids at a rate of 8 dry t/ha. Biosolids and soil samples taken over four months were sequentially fractionated to determine various inorganic and organic P pools. Also, within three weeks of biosolids application, four storm events were simulated and surface runoff and leachate from the soils were collected and analyzed for different P forms. The runoffs and equivalent inorganic nutrient were added to different mesocosms that mimicked stratified lakes. Samples from the mesocosms were periodically collected and analyzed for various physical, chemical and biological parameters. The results indicated that biosolids significantly affect different P pools in soils. Also, P loading from biosolids was expected to drive the mesocosms to hypereutrophication, yet the response was moderately eutrophic, followed by decline in chlorophyll a.

Uncertainty assessment of a dominant-process catchment model of dissolved phosphorus transfer

10.5194/hess-2015-545 ◽

2016 ◽

Author(s):

R. Dupas ◽

J. Salmon-Monviola ◽

K. Beven ◽

P. Durand ◽

P. M. Haygarth ◽

...

Keyword(s):

Soil Phosphorus ◽

Uncertainty Assessment ◽

Hydrologic Model ◽

Calibration Data ◽

Soil Biogeochemistry ◽

Dissolved Phosphorus ◽

Propagation Of Uncertainty ◽

Abstract. We developed a parsimonious topography-based hydrologic model coupled with a soil biogeochemistry sub-model in order to improve understanding and prediction of Soluble Reactive Phosphorus (SRP) transfer in agricultural headwater catchments. The model structure aims to capture the dominant hydrological and biogeochemical processes identified from multiscale observations in a research catchment (Kervidy-Naizin, 5 km2). Groundwater fluctuations, responsible for the connection of soil SRP production zones to the stream, were simulated with a fully-distributed hydrologic model at 20 m resolution. The spatial variability of the soil phosphorus status and the temporal variability of soil moisture and temperature, which had previously been identified as key controlling factor of SRP solubilisation in soils, were included as part of an empirical soil biogeochemistry sub-model. The modelling approach included an analysis of the information contained in the calibration data and propagation of uncertainty in model predictions using a GLUE "limits of acceptability" framework. Overall, the model appeared to perform well given the uncertainty in the observational data, with a Nash–Sutcliffe efficiency on daily SRP loads between 0.1 and 0.8 for acceptable models. The role of hydrological connectivity via groundwater fluctuation, and the role of increased SRP solubilisation following dry/hot periods were captured well. We conclude that in the absence of near continuous monitoring, the amount of information contained in the data is limited hence parsimonious models are more relevant than highly parameterised models. An analysis of uncertainty in the data is recommended for model calibration in order to provide reliable predictions.