Restrict region

[jnfrye]

I think the region currently used is a bit too big. I want to restrict the region this book covers to western Oregon (from the coast east to Deschutes River) and southwest Washington (using topography, the Deschutes river, and the Columbia river drainage basin). I want to create a polygon of geographic coordinates that defines the area used, and have the software use this.

[jnfrye]

Here's one idea that BONAP uses, "floristic tension zones": http://www.bonap.org/TensionZoneMaps/Tension.html

[jnfrye]

Here's another idea from BONAP: State Flora Similarity: http://bonap.org/2015_SpecialtyMaps/State%20Flora%20Similarity%202015/State%20Flora%20Similarity%202015.html

[jnfrye]

Here are a lot of maps from BONAP: http://bonap.org/2015_SpecialtyMaps/Density%20Gradient%202015/Density%20Gradient%202015.html

In particular,

• Floristic similarity: http://bonap.org/2015_SpecialtyMaps/Density%20Gradient%202015/original/4tem03_UPGMA_USFS_Sections.png

[jnfrye]

Another idea, climate similarity zones: http://www.bonap.org/Climate%20Maps/ClimateMaps.html

[jnfrye]

This was my original idea: https://www.epa.gov/eco-research/ecoregions-north-america