36 Questions
What is an important indicator of wetland hydrology?
The frequency of flooding
What are the three parameters of a wetland?
Hydrology, soil, and vegetation
What is the minimum duration of flooding required to meet the technical standard of a wetland?
14 or more consecutive days
What is an example of a hydrologic input?
Precipitation
What is a condition in which water from any source temporarily or permanently covers a land surface?
Inundation
What is the primary characteristic of a soil layer in wetland delineation?
Virtually all pores between soil particles are filled with water
What determines the properties of a mineral soil?
fine earth fraction percentage
What is the term for the top soil layer?
A horizon
What is the Munsell Color System used for?
To describe soil colors
What is the term for the process of breaking down organic matter?
Decomposition
What is the most decomposed stage of organic matter?
Sapric
A wetland is an area that is neither inundated nor saturated by surface or ground water.
False
Wetlands can include swamps, marshes, and bogs.
True
The duration of inundation required to meet the technical standard of a wetland is less than 14 days.
False
Evapotranspiration is an example of a hydrologic input.
False
The water table must be more than 12 inches below the soil surface for an area to be considered a wetland.
False
Inundation is a condition in which water from any source temporarily or permanently covers a land surface.
True
In wetland delineation, a soil layer is saturated if at least half of the pores between soil particles are filled with water.
False
Soil horizons are divided into two categories: organic and mineral.
True
The top soil layer is referred to as the B horizon.
False
The Munsell Color System is used to classify soil texture.
False
Soil climate is a natural factor that affects soil development.
True
The C horizon is the zone of mineral accumulation.
False
Organic matter decomposition can be classified into three stages: fibric, hemic, and sapric.
True
Wetland hydrology indicators can be classified into four groups: A, B, C, and D.
True
Soil texture is determined by the relative proportions of sand, silt, and clay.
True
Soil develops over time due to the interaction of climate, parent material, topography, and organisms.
True
What is the duration of flooding required to meet the technical standard of a wetland?
14 or more consecutive days
What are the three general types of hydrologic inputs in a wetland?
Precipitation, surface water inflow, and groundwater inflow
What is the maximum depth of the water table below the soil surface for an area to be considered a wetland?
12 inches
What is the primary characteristic of a soil layer that is saturated for wetland delineation purposes?
Virtually all pores between soil particles are filled with water
Which of the following is not a natural factor that affects soil development?
Soil texture
What is the term for the portion of a given soil having the dominant color?
Soil matrix
What is the term for the relative purity or saturation of a color?
Chroma
What is the characteristic of the fibric stage of organic matter decomposition?
Least decomposed
What is the term for a vertical section of a soil through all its horizons and extending into the parent material?
Soil profile
Learn about the definition of wetlands, including the hydrology, soil, and biotic parameters that support the unique vegetation in these areas. Understand the characteristics of swamps, marshes, and bogs.
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