scholarly journals Soil Phosphorus Storage Capacity for Environmental Risk Assessment

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Vimala D. Nair ◽  
Willie G. Harris
Keyword(s):  
Risk Assessment ◽  
Storage Capacity ◽  
Soil Phosphorus ◽  
Cost Effective ◽  
Threshold Value ◽  
Molar Ratio ◽  
Soil P ◽  
Risk Assessment And Management ◽  
Previous Loading ◽  
Phosphorus Storage

Reliable techniques must be developed to predict phosphorus (P) storage and release from soils of uplands, ditches, streams, and wetlands in order to better understand the natural, anthropogenic, and legacy sources of P and their impact on water quality at a field/plot as well as larger scales. A concept called the “safe” soil phosphorus storage capacity (SPSC) that is based on a threshold phosphorus saturation ratio (PSR) has been developed; the PSR is the molar ratio of P to Fe and Al, and SPSC is a PSR-based calculation of the remaining soil P storage capacity that captures risks arising from previous loading as well as inherently low P sorption capacity of a soil. Zero SPSC amounts to a threshold value below which P runoff or leaching risk increases precipitously. In addition to the use of the PSR/SPSC concept for P risk assessment and management, and its ability to predict isotherm parameters such as the Langmuir strength of bonding,KL, and the equilibrium P concentration, EPC0, this simple, cost-effective, and quantitative approach has the potential to be used as an agronomic tool for more precise application of P for plant uptake.

Laboratory Validation of Soil Phosphorus Storage Capacity Predictions for Use in Risk Assessment

2007 ◽  
Vol 71 (5) ◽  
pp. 1564-1569 ◽  
Author(s):  
M. Chrysostome ◽  
V. D. Nair ◽  
W. G. Harris ◽  
R. D. Rhue
Keyword(s):  
Risk Assessment ◽  
Storage Capacity ◽  
Soil Phosphorus ◽  
Phosphorus Storage

scholarly journals Seal Tightly and Store in a Cool Dry Place: Exploring Soil Phosphorus Storage in a Subtropical Treatment Wetland.

2021 ◽  
Author(s):  
Paul Julian II ◽  
Todd Z. Osborne ◽  
Vimala D. Nair
Keyword(s):  
Storage Capacity ◽  
Soil Depth ◽  
Soil Phosphorus ◽  
Stormwater Treatment ◽  
Treatment Wetland ◽  
Wetland Ecosystems ◽  
Soil P ◽  
Iron Aluminum ◽  
Variable Condition ◽  
Phosphorus Storage

Abstract Oligotrophic wetlands of the Everglades are often the final recipients of nutrients from adjacent ecosystems and tend to accumulate phosphorus (P) in their soils. Understanding P source and sink dynamics in wetlands are critical for managing wetland ecosystems and protecting downstream resources. In this study, soil P storage capacity (SPSC) was evaluated within two treatment flow-ways of the Everglades Stormwater Treatment Areas (STAs). This study hypothesized that SPSC will vary between flow-ways, soil depth, and spatially along the inflow-to-outflow gradient. The P storage capacity in the STAs depend on the proportion of iron, aluminum, calcium, and magnesium (Fe, Al, Ca, and Mg, respectively) to P with floc and recently accreted soils (RAS) being associated more with Ca and Mg and pre-STA soils being associated more with Fe and Al. Phosphorus loss, as indicated from SPSC values would vary between systems and soil depths suggesting a variable condition of P sink and source within and along flow-ways. This result, while limited, demonstrates the applicability of SPSC to wetlands systems and provides information that will aid operational or management decisions associated with improving P retention of the Everglades STAs.

Psychophysiological comorbidity and computerized biofeedback

2002 ◽  
Vol 25 (5) ◽  
pp. 429-433 ◽  
Author(s):  
N. Pop-Jordanova ◽  
J. Pop-Jordanov
Keyword(s):  
Quality Of Life ◽  
Risk Assessment ◽  
Cost Effective ◽  
Anxiety And Depression ◽  
Quantum Model ◽  
Applied Psychophysiology ◽  
Non Invasive ◽  
Psychophysiological Disorders ◽  
Risk Assessment And Management

Our previous research on basic and applied psychophysiology comprised the quantum model for subcellular brain processes, the psychosomatic health risk assessment and management, as well as the electrodermal biofeedback psychometrics and therapy. Based on this experience, in the present paper the stress-related psychophysiological disorders in patients dependent on hemodialysis and insulin are considered. The most frequent comorbid psychological disorders appeared to be anxiety and depression, and they are generally under-diagnosed and under-treated. It is concluded that the quality of life of these patients needs to be considerably enhanced. The application of biofeedback, as a complementary cost-effective and non-invasive psychophysiological tool is recommended. In terms of ESAO vocabulary, this technique could be viewed as some kind of artificial ANS/CNS support. Simultaneously, the concept of biocompatibility may be viewed in a larger perspective as “psychobiocompatibility”.

scholarly journals An evaluation of soil phosphorus storage capacity (SPSC) at proposed wetland restoration locations in the western Lake Erie Basin

2021 ◽  
Author(s):  
Jacob Berkowitz ◽  
Christine VanZomeren ◽  
Nia Hurst ◽  
Kristina Sebastian
Keyword(s):  
Wetland Restoration ◽  
Lake Erie ◽  
Storage Capacity ◽  
Wetland Management ◽  
Soil Phosphorus ◽  
Land Use Patterns ◽  
Soil P ◽  
Western Lake ◽  
Western Lake Erie ◽  
P Sources

Historical loss of wetlands coupled with excess phosphorus (P) loading at watershed scales have degraded water quality in portions of the western Lake Erie Basin (WLEB). In response, efforts are underway to restore wetlands and decrease P loading to surface waters. Because wetlands have a finite capacity to retain P, researchers have developed techniques to determine whether wetlands function as P sources or sinks. The following technical report evaluates the soil P storage capacity (SPSC) at locations under consideration for wetland restoration in collaboration with the Great Lakes Restoration Initiative (GLRI) and the H2Ohio initiative. Results indicate that the examined soils display a range of P retention capacities, reflecting historic land-use patterns and management regimes. However, the majority of study locations exhibited some capacity to sequester additional P. The analysis supports development of rankings and comparative analyses of areas within a specific land parcel, informing management through design, avoidance, removal, or remediation of potential legacy P sources. Additionally, the approaches described herein support relative comparisons between multiple potential wetland development properties. These results, in conjunction with other data sources, can be used to target, prioritize, justify, and improve decision-making for wetland management activities in the WLEB.

Soil phosphorus storage capacity as affected by repeated phosphorus addition in an Ultisol

2020 ◽  
Vol 51 (14) ◽  
pp. 1960-1968
Author(s):  
Xinghong Xu ◽  
Yanling Wang ◽  
Hailin Zhang ◽  
Dan Yin ◽  
Biswanath Dari ◽  
...  
Keyword(s):  
Storage Capacity ◽  
Soil Phosphorus ◽  
Phosphorus Addition ◽  
Phosphorus Storage

THE ROLE OF ENVIRONMENTAL RISK MANAGEMENT AND REPORTING: AN EMPIRICAL ANALYSIS

2002 ◽  
Vol 04 (01) ◽  
pp. 1-29 ◽  
Author(s):  
JOHN HOOD ◽  
SCOTT NICHOLL
Keyword(s):  
Risk Assessment ◽  
Environmental Management ◽  
Risk Management ◽  
Environmental Risk ◽  
Environmental Risk Assessment ◽  
Best Practice ◽  
Cost Effective ◽  
Environmental Reporting ◽  
Environmental Risk Management ◽  
Risk Assessment And Management

In recent years, there have been significant developments in the field of environmental risk assessment and management. Its role in the corporate setting has been strengthened by claims that financial results and corporate reputation can be significantly improved through environmental management. Risk assessment and management provides one of the most comprehensive and cost-effective mechanisms for managing environmental issues and has subsequently led to the adoption of risk-based environmental management. This research examines the current discussion in the field of environmental risk management and undertakes a survey of 112 UK companies to ascertain how environmental risk assessment is perceived and what role it has in environmental management, including environmental reporting and accounting. The paper concludes that whilst there have been some positive developments in the area, companies, governments and regulators still have work to do in ensuring the adoption of best practice.

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