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Thick-billed Longspur Cores

Dates

Publication Date
2015-11-01
Our study area includes the Breeding Bird Survey range for thick-billed longspurs (Sauer et al., 2014). The region covers portions of Alberta, Saskatchewan, Montana and the Dakotas.
2007-01-01
Our study area includes the Breeding Bird Survey range for thick-billed longspurs (Sauer et al., 2014). The region covers portions of Alberta, Saskatchewan, Montana and the Dakotas.
2012-12-31

Citation

Marisa Sather(Originator), US Fish & Wildlife Service(Originator), University of Montana(Originator), 2015-11-01(Publication), Thick-billed Longspur Cores

Summary

Predicted population cores (25%, 50% and 75%) of breeding thick-billed longspur (Rhynchophanes mccownii) based on a range-wide random forest distribution model. We summed the probability of occurrence across all pixels in the study region to generate an index of total population. We placed each grid cell prediction in the context of the study area by dividing the individual pixel probability by the total index. Starting with the highest-value pixels, we cumulatively summed the probabilities until a given threshold was met. We set 25, 50 and 75% thresholds to delineate cores as the smallest possible areas containing the highest concentrations of predicted birds.

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md_metadata.json 9.35 KB application/json
metadata_iso1.xml 27.7 KB application/vnd.iso.19139-1+xml
Thick_Billed_Longspur_mclo_Cores.zip 123.23 KB application/zip

Purpose

Predicted population cores (25%, 50% and 75%) of breeding thick-billed longspur (Rhynchophanes mccownii) based on a range-wide random forest distribution model.

Rights

None; United States Fish and Wildlife Service (Service) shall not be held liable for improper or incorrect use of the data described and/or contained herein. While the Service makes every reasonable effort to ensure the accuracy and completeness of data provided for distribution, it may not have the necessary accuracy or completeness required for every possible intended use. The Service recommends that data users consult the associated metadata record to understand the quality and possible limitations of the data. The Service creates metadata records in accordance with the standards endorsed by the Federal Geographic Data Committee. As a result of the above considerations, the Service gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of the data. It is the responsibility of the data user to use the data in a manner consistent with the limitations of geospatial data in general and these data in particular. Although these data have been processed successfully on a computer system at the Service, no warranty, expressed or implied, is made regarding the utility of the data on another system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This applies to the use of the data both alone and in aggregate with other data and information. 

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  • LC MAP - Landscape Conservation Management and Analysis Portal

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generated using ADIwg mdTranslator 2.17.1

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urn:uuid urn:uuid 3bcc8a33-735e-4459-82a1-5356a2345df2

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