Cubic spline coefficients and nonparametric test results are not yet complete, nor are the multiple regression models. We start with the potential that all plants are “rare.” In fact, words don’t adequately explain plant disappearance (extinction), but mathematics does. Plant populations: = 0 (extinct), possessing a slope to extinction (year to year) of < 1.0 or >= 1.0 … the latter described as “abundant and of no concern.” The predicted variable would be the estimated year of extinction. The sole composite predictor would be the “slope” of the extinction equation. Only 3 mathematical states exist: =0 ……. <1.0 …… = 1.0. Variables now being used to create the composite slope include:
| SAM Student Visits to 20,000 Historic Cascadia Herbaria Collection Sites | |
| # of Populations Visited | |
| # of sites still with these plants | |
| # of new Populations Found elsewhere | |
| # of site population photos verifying | |
| SAM 2018 & 2019 Visits to Herbaria Sites | |
| Unique Species Planted | |
| and now growing in the Gardens | |
| Burke URL Records | |
| ~1/2 of Burke photos, their median year | |
| Most Recent Photo Year | |
| Earliest Photo Year | |
| Legler Median Year | |
| Present Year BBG or SAM | |
| Visual View of Plant Distributions | |
| ~# Populations in W WA (visual dot count) | |
| ~# Populations in E WA (visual dot count) | |
| ~# of total populations in WA | |
| Herbaria (All) Records | |
| Year 1st Described | |
| Median Year | |
| Year Last Found | |
| Total Sites logged in all Herbaria | |
| Restated WA State Rare Status | |
| Extinct | |
| Endangered | |
| Threatened | |
| Sensitive | |
| Trending to Extinction | |
| Abundant of No Concern | |
| Global WA State Rare Status | |
| Extinct | |
| Endangered | |
| Threatened | |
| Sensitive | |
| Trending to Extinction | |
| Abundant | |
| Native Floristic Ranges | |
| Local Endemic | |
| Regional Endemic | |
| Cascadia | |
| Rocky Mountain | |
| North America | |
| Flower Color | |
| White | |
| Yellow | |
| Orange | |
| Red-Pink | |
| Purple-Blue | |
| Green | |
| Brown | |
| Type | |
| Fern | |
| Grass | |
| Herb | |
| Shrub | |
| Tree | |
| Vine | |
| Season Abbreviation | |
| A | |
| B | |
| C | |
| D | |
| Plants Age Range | |
| Average Age | |
| Maximum Age Value | |
| Habitat | |
| Bogs Ponds Sreams | |
| Coastal Areas | |
| Meadows Dry Open | |
| Forest & Understory | |
| Moist Open | |
| Moist Shady | |
| Sub-Alpine Slopes | |
| Common Range in Feet | |
| Low | |
| High | |
| Range Mid, Mean, Max Temperatures | |
| Minimum Temperature (6 hours duration) | |
| Mean | |
| Maximum Temperature (6 hours duration) | |
| Coordinates | |
| Longitude | |
| Latitude | |
| Favored Soil | |
| Clay | |
| Loam | |
| Peat | |
| Rocky | |
| Sand | |
| Serpentine | |
| Silt | |
| Exposure | |
| SW | |
| NW | |
| NE | |
| SE | |
| Any All | |
| Mean Ph | |
| Below NW | |
| >6.5 to <7.0 | |
| >=7.0 | |