NE Resilience Report - Conservation Gateway

Sites (1000 Acre Hexagons): We attributed each hexagon with information and scores for the resilience
factors described in the previous chapters: landform variety, elevation range, wetland density, local
connectedness, regional flow concentrations, and the integrated variables of landscape complexity and
estimated resilience. For each factor, we calculated the minimum, maximum, range, mean, standard
deviation, sum, variety, majority, minority, and median for each hexagon using zonal statistics in ArcGIS
Toolbox. Additionally, we overlaid point locations of rare species and natural communities compiled
from the 13 State Natural Heritage program’s ongoing inventory.
Individual Geophysical Settings: For each geophysical setting we identified the area with the highest
resilience scores by calculating the mean estimated resilience score for all cells of each setting, and then
identifying those hexagons that scored above the mean OR that were above the mean for the entire
region. The end of this chapter presents each setting individually with a list of the associated communities
and rare species, the geophysical characteristics, the securement status, and the final resilience scores
(Maps 5.1 - 5.17). The content and structure of each page is shown below.
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LAYOUT AND CONTENT OF THE SETTINGS PAGES
ABREVIATION: NAME OF SETTING
Description: Short description of key characteristics of this setting
Figure: a map of the distribution of the setting, exaggerated to make it easy
to see single cell (compare with the map below).
Example: Current Communities
Examples of natural communities located primarily within this setting, and
that are inventoried and monitored by the State Natural Heritage Programs
Securement status: The total amount of this setting that falls on secured land (GAP 1, 2 or3, top row),
and the percentage of each resilience category that falls on each type of secured land (Rows 4-8). In this
example the 4 percent secured as Gap 1 or 2 is composed of 1 percent on far above average sites.
Resilience Score Category Percents Acres
GAP1 or 2 GAP3 Unsecured Total Acres
L:COARSE 4% 6% 90% 9,653,844
1: Far Below Average 0% 1% 18% 1,782,104
2: Below Average 0% 1% 13% 1,298,121
3: Average 2% 2% 34% 3,663,419
4: Above Average 1% 1% 12% 1,316,133
5: Far Above Average 1% 2% 14% 1,594,067
Map: A map of the setting with each cell colored by its resilience score category, either above or below
the average for the setting.
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42 Resilient Sites for Terrestrial Conservation in the Northeast and Mid-Atlantic Region
The Nature Conservancy • Eastern Conservation Science • Eastern Division • 99 Bedford St • Boston, MA 02111