Wetlands soil characteristics

Clarke, P. J. (1985). Nitrogen pools and soil characteristics of a temperate estuarine wetland in eastern Austraha. Aquat. Bot. 23, 275—290. 

Gaunt J. L., Neue H. U., Bragais J., Grant I. F., and Giller K. E. (1997) Soil characteristics that regulate soil reduction and methane production in wetland rice soils. Soil Sci. Soc. Am. J. 61, 1526-1531. 

Wetland soils have unique characteristics compared to upland soils (Ponnamperuma, 1972) and can be identified by the presence of... 

These are typical characteristics of wetlands with overlying floodwater and lake and marine sediments. The exchange rates between soil and water column determine whether wetland soils or sediments are functioning as a sink or source for nutrients. The rate of exchange of dissolved species depends on ... 

What is hydrophytic vegetation List the unique characteristics that allow these plants to grow in wetland soils. 

What unique characteristics of wetland soils separate them from upland soils ... 

Characteristics of soil humus in wetland soils are not known at this time. Much of the information presented relies on the literature from soils of terrestrial ecosystems. The following are the major characteristics of soil organic matter (Table 5.18). 

Soils in wetlands are often organic in nature, as a result of plant material that has slowly decayed and humified. How do you think that the soil characteristics in an herbaceous... 

An example of phosphorus-loading influence on adsorption characteristics is shown in Figure 9.23. The critical value of EPCq increases with phosphorus loading, suggesting that the soil does not have enough buffering capacity to maintain low phosphorus concentration in the soil pore water or the soil solid phase has been saturated with added phosphorus therefore, phosphorus concentration in solution increases. In general, wetland soils that are heavily loaded function as net source of phosphorus, especially when these soils come in contact with low-phosphorus water (rainwater). 

Fast dissolution rate, adsorbs strongly to soil but also degrades readily. Depending on soil characteristics, these breakdown products are either more mobile than or have a simila r mobility to TNT. TNT can be taken up by plants from contaminated soil, including edible varieties of garden plants, aquatic and wetland plants, trees, and can accumulate in plant roots. 

Submerged soils behave and affect the environment in substantially different ways to dryland soils. This chapter discusses the main characteristics and enviromnental effects of submerged soils and the wetlands they support, and their extent across the globe. 

An important characteristic influencing the acid-base status of surface waters is the supply of naturally occurring organic solutes. These materials include organic acids, which decrease the ANC of waters and mobilize aluminum from soil through complexation reactions. Watersheds with an abundance of wetlands typically have high concentrations of dissolved organic carbon and associated surface waters can be naturally acidic due to... 

Wetlands can be very diverse with very high internal spatial heterogeneity with respect to vegetation, soils, and hydrology. Thus, the characteristics and functions of any given wetland can be determined by the position on the landscape, climate, hydrology, vegetation, and soils. 

The Committee on Wetlands Characterization, Water Science and Technology Board, National Academy of Sciences, developed a reference definition for wetland that stands outside the interests of any private or public agency (Lewis, 1995). A wetland is an ecosystem that depends on constant or recurrent, shallow inundation or saturation at or near the surface of the substrate. The minimum essential characteristics of a wetland are recurrent, sustained inundation or saturation at or near the surface and the presence of physical, chemical, and biological features reflective of recurrent, sustained inundation or saturation. Common diagnostic features of wetlands are hydric soils and hydrophytic vegetation. These features will be present except where specific physicochemical, biotic, or anthropogenic factors have removed them or prevented their development. ... 

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