- ID: 2639
- State: Finalized
- Owner: Scott Miller
- Collaborator(s): None
- Spatial Design Category: Generalized Random Tessellation Stratified (GRTS)
- Sites in Design: 69
- Has Location Privacy: No
- Data Repository: <none>
- Created by: Scott Miller
- Created: 4/24/2017
- Updated by: Rebecca Scully
- Updated: 10/2/2017
- Version History: v2.0 Revising (4/27/2017) - v1.0 Finalized (4/24/2017)
The details of this Sample Design, including all the parameters used to generate it, are included below. Sample designs must belong to a Study Plan.
Description
Sample Design Parameters
- No user sites
- 3 Panels
- Is stratified
Start Year
2017
Initiation Year
2017
Retirement Year
Study Plan
BLM AIM Assessment, Inventory, and Monitoring (AIM) of Wadeable Lotic Systems v1.0
Data Repositories
<none>
Photos
<none>
Documents
<none>
Map of Sites
- Stratum
- Panel
- Occasion
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Area of Inference
<none>
AOI Notes
<none>
This sample design is based on master sample: Bureau of Land Management Lotic
Details of this master sample:
- Source: U.S. Bureau of Land Management
- # of sites: 67033
- Type: Linear 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 884 sites:
Target Population
BLM perennial streams and rivers in the Upper Snake FO, ID
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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 (1 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.
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) | 277 | 0 | Large Streams (3&4) | LS | 3 | 3 | 3 | |
Rivers (5+) | 192 | 0 | Rivers (5+) | RV | 1 | 1 | 0 | |
Small Streams (1&2) | 415 | 0 | Small Streams (1&2) | SS | 4 | 4 | 4 | |
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: | 884 |
Number of sites after generating the GRTS sample: | 69 |
Number of oversamples: | 46 |
Number of panels: | 3 |
Number of strata: | 3 |
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Schema | Attribute | Description |
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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]]