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Sample Design: PrinevillePerennialFinal

Sample Design: PrinevillePerennialFinal
ID: 2530
State: Finalized
  • State: Finalized
  • Owner: Scott Miller
  • Spatial Design Category: Generalized Random Tessellation Stratified (GRTS)
  • Data Repository: <none>
  • Sites in Design: 150
  • Has Location Privacy: No

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The details of this Sample Design, including all the parameters used to generate it, are included below. Sample designs must belong to a Study Design.

Description

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Sample Design Parameters


Start Year

2016

Study Design

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Photos

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Documents

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Map of Sites

Stratum Panel Occasion

This sample design is based on master sample: Bureau of Land Management Lotic

Details of this master sample:



Frame

This sample design started with an initial frame of 67,033 sites, based on its master sample. The criteria (based on the master sample's attributes) were then used to refine the sample frame down to 1,972 sites:

Criteria Group 1
           
  BLM District Is Equal To PRINEVILLE DISTRICT OFFICE
OR

Criteria Group 2
           
  In Progress Land Use Plan Area Name Is Equal To John Day Basin Resource Management Plan

Target Population

Perennial streams on BLM land in the Prineville District office

 


Panel designs can help address sampling objectives by increasing the total number of samples at a lower overall cost. A common panel structure involves one or more panels with a high revisit frequency (e.g. an “Annual” panel), and other panels with a lower revisit frequency (e.g. a three year “Rotating” panel).

Panel Sampling Occasion (3 Year(s))
# Panel Name Panel Abbr. 1
1
Year 1
Yr1
2
Year 2
Yr2
3
Year 3
Yr3

This design uses the following attributes to create the stratification shown below. Each row in the table represents a stratum. This design’s panels are also shown in the table, even if it uses only a single, default panel.

Sample Attributes
  Attribute   Values In Frame
  Stream_Order_Group 3 Values: Large Streams (3&4), Rivers (5+), Small Streams (1&2)
Attributes # Sites In Frame Frame Length (km) Stratum Attributes Panels
Stream_Order_Group Stratum Name Stratum Abbr. Year 1 Year 2 Year 3 # of Sites
Large Streams (3&4) 459 0 Large Streams (3&4) S0 7 4 5
Rivers (5+) 630 0 Rivers (5+) S1 8 4 5
Small Streams (1&2) 883 0 Small Streams (1&2) S2 7 4 6
TOTAL 0 km      

Below is the complete list of sample sites that were drawn using the criteria for this sample design.

Number of sites before generating the GRTS sample: 1,972
Number of sites after generating the GRTS sample: 150
Number of oversamples: 100
Number of panels: 3
Number of strata: 3

Shapefile

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Distribution

The histogram charts below show the distribution of this sample design’s sites across the various panels and strata.


  Schema   Attribute   Description

PROJCS["USA_Contiguous_Albers_Equal_Area_Conic_USGS_version",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Albers"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-96.0],PARAMETER["Standard_Parallel_1",29.5],PARAMETER["Standard_Parallel_2",45.5],PARAMETER["Latitude_Of_Origin",23.0],UNIT["Meter",1.0]]