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Biogeochemical Indicators

FIGURE 15.1 Schematic showing the effect of anthropogenic impacts on biogeochemical processes in soil and water column. [Pg.576]

One of the most attractive approaches to measuring and quantifying nntrient availability is based on using physical, chemical, or biological properties or processes in the soil and water column as indicators of change or response to anthropogenic impacts. In this chapter we describe simple-to-measure indicators with reasonable scientihc rigor and reproducibility that will assess nutrient conditions in wetlands. [Pg.577]

Taking into account the present and future oil and gas explorations extent in these areas the biogeochemical indices can greatly improve the exposure estimates and environmental risk assessment. [Pg.154]

Cordova A.M. Longo K. Freitas S. Gatti L.V. Artaxo P. Procopio A. Silva Dias M.A.F. and Freitas E.D. (2004). Nitrogen oxides measurements in an Amazon site and enhancements associated with a cold front. Atmos. Chem. Phys. Discuss., 4, 2301 -2331. Corstanje R. and Reddy K.R. (2004). Response of Biogeochemical Indicators to a Drawdown and Subsequent Reflood. J. Environ. Qua ., 33, 2357-2366. [Pg.523]

Leonova G.A. (2004). Biogeochemical Indicators of Aquatic Ecosystem Pollution by Heavy Metals. Water Resources, 31(2), 195 -202. [Pg.540]

What biogeochemical indicators are suitable to describe impacts on wetlands ... [Pg.578]

Does the distribution and central tendency of biogeochemical indicators discriminate between natural spatial variability and anthropogenic impact in wetlands ... [Pg.578]

FIGURE 15.3 Relationship between biogeochemical indicator measurement and cost, sensitivity, spatial resolution, and response time. [Pg.579]

Nutrient inputs to a wetland can occur at various geographic locations from point and nonpoint sources. The effects of nutrient loading are usually patterned with impacted zones adjacent to inflow points and unimpacted zones furthest away from them. Thus, monitoring stations should be located in both impacted and unimpacted zones to accurately quantify differential nutrient loads. Biogeochemical indicator selection and evaluation requires systematic steps, before the selected indicators can be incorporated into routine monitoring programs. [Pg.583]

Impact Index Values for Select Biogeochemical Indicators Measured in Detritus and Soil Layers at the Impacted Site and Interior Reference Site... [Pg.595]

FIGURE 15.13 Impact index values for a range of biogeochemical indicators and processes measured in detrital/floc layer of the Everglades. [Pg.596]

Before using any selected biogeochemical indicator, a sampling design must be established that represents unimpacted and impacted portions of the wetland to assess early warning signals of decline in ecosystem health. [Pg.597]

List the qualities desired in selecting a biogeochemical indicator. [Pg.597]

Reddy, K. R. and E. M. D Angelo. 1996. Biogeochemical indicators to evaluate pollutant removal efficiency in constructed wetlands. Water Sci. Tech. 35 1-10. [Pg.747]

Wright, A., K. R. Reddy, and S. Newman, 2008. Biogeochemical indicators of phosphorus loading in select hydrologic units of the Everglades (submitted for publication). [Pg.755]

See other pages where Biogeochemical Indicators is mentioned: [Pg.3370]    [Pg.3]    [Pg.509]    [Pg.520]    [Pg.575]    [Pg.575]    [Pg.576]    [Pg.577]    [Pg.578]    [Pg.579]    [Pg.580]    [Pg.581]    [Pg.582]    [Pg.583]    [Pg.585]    [Pg.585]    [Pg.587]    [Pg.589]    [Pg.591]    [Pg.593]    [Pg.593]    [Pg.595]    [Pg.597]    [Pg.713]    [Pg.805]    [Pg.67]   


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