The number of taxa found on the plot, within the taxonObservationArea. Any species known to be found only outside of the taxonObservationArea would not be included in this number. Use 0 for this field to indicate that no taxa were found within the plot bounds.
What is the hydrologic regime, which is a reflection of frequency and duration of flooding? List is taken from Cowardin et al. 1979, 1985.
closed List of Values:
Value
Description
Sorting
Semipermanently flooded
Surface water persists throughout the growing season in most years. Land surface is normally saturated when water level drops below soil surface. Includes Cowardin's Intermittently Exposed and Semipermanently Flooded modifiers.
1
Seasonally flooded
Surface water is present for extended periods during the growing season, but is absent by the end of the growing season in most years. The water table after flooding ceases is very variable, extending from saturated to a water table well below the ground surface. Includes Cowardin's Seasonal, Seasonal-Saturated, and Seasonal-Well Drained modifiers.
2
Saturated
Surface water is seldom present, but substrate is saturated to surface for extended periods during the growing season. Equivalent to Cowardin's Saturated modifier.
3
Seasonally saturated
4
Temporarily flooded
Surface water present for brief periods during growing season, but water table usually lies well below soil surface. Often characterizes flood-plain wetlands. Equivalent to Cowardin's Temporary modifier.
5
Intermittently flooded
Substrate is usually exposed, but surface water can be present for variable periods without detectable seasonal periodicity. Inundation is not predictable to a given season and is dependent upon highly localized rain storms. This modifier was developed for use in the arid West for water regimes of Playa lakes, intermittent streams, and dry washes but can be used in other parts of the U.S. where appropriate. This modifier can be applied to both wetland and non-wetland situations. Equivalent to Cowardin's Intermittently Flooded modifier.
6
Permanently flooded
Water covers the land surface at all times of the year in all years. Equivalent to Cowardin's "permanently flooded".
7
Permanently flooded - tidal
Salt water covers the land surface at all times of the year in all years. This modifier applies only to permanently flooded area irregularly flooded by fresh tidal water. Equivalent to Cowardin's "permanently flooded/tidal".
8
Tidally flooded
Flooded by the alternate rise and fall of the surface of oceans, seas, and the bays, rivers, etc. connected to them, caused by the attraction of the moon and sun.
9
Wind-tidally flooded
Flooded by the alternate rise and fall of the surface of oceans, seas, and the bays, rivers, etc. connected to them, caused by the back-up of water caused by unfavorable winds.
10
Irregularly flooded
Tidal water floods land surface less often than daily; the area must be flooded by tides at least once yearly as a result of extreme high spring tide plus wind plus flow.
11
Irregularly exposed
Land surface is exposed by tides less often than daily; the area from mean low tide to extreme low spring tide.
Identifies the natural drainage conditions of the soil and refers to the frequency and duration of wet periods. The soil drainage classes are defined in terms of (1) actual moisture content (in excess of field moisture capacity) and (2) the extent of the period during which excess water is present in the plant-root zone. Soil drainage class categories conform to the FGDC Soil Geographic Data Standards, September 1997. (http://www.fgdc.gov/standards/documents/standards/soils/soil997.PDF.) Definitions are derived from Grossman et al. (1998) and Sims et al. (1997).
closed List of Values:
Value
Description
Sorting
excessively drained
Soils are free from any evidence of gleying throughout the profile. These soils are commonly very coarse textured (e.g., >35% volume of particles > 2 mm in size) or soils on very steep slopes. Sometimes described as "very rapidly drained."
1
somewhat excessively drained
The soil moisture content seldom exceeds field capacity in any horizon except immediately after water addition. Soils are free from any evidence of gleying throughout the profile. Rapidly drained soils are commonly coarse textured or soils on steep slopes. Sometimes described as "rapidly drained."
2
well drained
The soil moisture content does not normally exceed field capacity in any horizon (except possibly the C) for a significant part of the year. Soils are usually free from mottling in the upper 3 feet (1 m), but may be mottled below this depth. B horizons, if present, are reddish, brownish, or yellowish.
3
moderately well drained
The soil moisture in excess of field capacity remains for a small but significant period of the year. Soils are commonly mottled (chroma < 2) in the lower B and C horizons or below a depth of 2 feet (0.6 m). The Ae horizon, if present, may be faintly mottled in fine-textured soils and in medium-textured soils that have a slowly permeable layer below the solum. In grassland soils the B and C horizons may be only faintly mottled and the A horizon may be relatively thick and dark.
4
somewhat poorly drained
The soil moisture in excess of field capacity remains in subsurface horizons for moderately long periods during the year. Soils are commonly mottled in the B and C horizons; the Ae horizon, if present, may be mottled. The matrix generally has a lower chroma than in the well-drained soil on similar parent material. Sometimes described as "imperfectly drained."
5
poorly drained
The soil moisture in excess of field capacity remains in all horizons for a large part of the year. The soils are usually very strongly gleyed (low chroma colors, such as gray, bluish, or gray-green). Except in high-chroma parent materials the B, if present, and upper C horizons usually have matrix colors of low chroma. Faint mottling may occur throughout.
6
very poorly drained
Free water remains at or within 12 inches of the surface most of the year. The soils are usually very strongly gleyed. Subsurface horizons usually are of low chroma and yellowish to bluish hues. Mottling may be present but at the depth in the profile. Very poorly drained soils usually have a mucky or peaty surface horizon.
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