Ecological Sites

Contents:

Adapted from

"Ecological Sites of North Dakota: A Pictorial Guide of Ecological Sites Common to North Dakota"
North Dakota State University
Kevin K. Sedivec and Jeffrey L. Printz
http://www.ag.ndsu.edu/pubs/ansci/range/r1556.pdf

 

Ecological Sitea distinctive kind of rangeland based on similar soil and environmental conditions capable of producing distinctive kinds and amounts of native herbage.

Major Land Resource Area (MLRA)a broad geographic area characterized by a particular pattern of soils, climate, water resource, vegetation and land use. (MLRAs will comprise numerous ecological sites.)

  • 8 MLRAs represent the majority of North Dakota
    • 53A, 53B, 54, 55A, 55B, 56, 58C, 58D (see complete document for map of MLRAs)
  • The USDA Natural Resource Conservation Service (NRCS) has recognized 278 MLRAs designated and identified by a descriptive geographic name

Ecological Site Description (ESD)"...reports that describe thea) biophysical properties of ecological sites, b) vegetation and surface soil properties of reference conditions that represent either i) pre-European vegetation and historical range of variation (in the United States) or ii) proper functioning condition or potential natural vegetation, c) state-and-transition model graphics and text, and d) a description of ecosystem services provided by the ecolgoical site and other interpretations."

(definition from "Ecological Site Descriptions," USDA Agricultural Research Service http://www.ars.usda.gov/Research/docs.htm?docid=18502"

Main types of ecolgoical sites in North Dakota MLRAs

  • High Water Table Group
    • Closed Depression
    • Limy Subirrigated
    • Saline Lowland
    • Subirrigated
    • Wet Meadow
    • Wet Land (Shallow Marsh)
  • Shallow and Very Shallow Group
    • Shallow Clayey
    • Shallow Gravel
    • Shallow Loamy
    • Shallow Sandy 
    • Very Shallow
  • Claypan Group
    • Claypan
    • Thin Claypan
    • Sandy Claypan
  • Sandy Ecological Group
    • Sandy
    • Sandy Terrace
    • Limy Sands
    • Sands
    • Subirrigated Sands
    • Choppy Sands (Thin Sands)
  • Clayey Group
    • Clayey
  • Loamy Group
    • Loamy
    • Loamy Overflow
    • Loamy Terrace
    • Thin Loamy

For more information on ecological sites in North Dakota, see "Ecological Sites of North Dakota: A Pictorial Guide of Ecological Sites Common to North Dakota"

 


Resources

  • Ecological Sites of North Dakota: A Pictorial Guide of Ecological Sites Common to North Dakota (Kevin K. Sedivec, North Dakota State University and Jeffrey L. Printz, USDA NRCS)