Service Description: Provisional seed transfer zones for four regions in the desert southwest (Mojave Desert, Sonoran Desert, Southern Great Basin, and Colorado Plateau)

Service ItemId: 24f0d2d95678490e9e5b8742dab6a361

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Max Record Count: 1000

Supported query Formats: JSON

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• seed_zones_full_nad83gcs (0)

Description: There are now 10 STZs that are completely encompassed within the the Mojave Desert Ecoregion (zones 20-29). There are an additional 11-12 STZs that are at least partially within the Mojave Ecoregion. It's important to note that the numbering of STZs is for ALL of the ecoregions covered by the Climate Distance Mapping Tool. The STZs at least partially within the Mojave are: 5, 13, 14, 18, 20-36. While these are a lot of STZs to deal with, there are some advantages: 1) there are no longer gaps in the STZs, and higher elevations are now covered, 2) the STZs continue beyond the Mojave boundaries, which should be very helpful for field offices whose lands straddle the border, and 3) the STZs seem to be more continuous, without the little triangles of counter-intuitive STZ changes within larger STZ patches. Summary Provisional seed transfer zones indicate areas of similar climate within which plant populations may share similar patterns of local adaptation. Description Provisional seed transfer zones were derived for four ecoregions in the Desert Southwest (Mojave Desert, Sonoran Desert, Southern Great Basin, and Colorado Plateau) based on a hierarchical cluster analysis of five principal components. Climate variables were chosen based on their known influence on local adaptation in plants, and include: mean annual temperature, summer maximum temperature, winter minimum temperature, annual temperature range, temperature seasonality (coefficient of variation in monthly average temperatures), mean annual precipitation, winter precipitation, summer precipitation, proportion of summer precipitation, precipitation seasonality (coefficient of variation in monthly precipitation totals), long-term winter precipitation variability, and long-term summer precipitation variability.

Copyright Text: Funding: U.S. Bureau of Land Management, Native Plan Materials Program

Spatial Reference: 2874 (2874)

Initial Extent:

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Spatial Reference: 2874 (2874)

Full Extent:

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Spatial Reference: 2874 (2874)

Units: esriFeet

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