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The
mission of
the Institute is to increase humankind's understanding, appreciation,
and protection of our natural environment; particularly wildlife
populations and wild landscapes. Our goal is to enable
human beings to live in harmony with other species.
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The
Interior Cedar-Hemlock Forest of North America
In 2004, in
collaboration with the Valhalla Wilderness Society, we completed a
broad-scale regional-level modeling approach for the Inland
Temperate Rainforest of British Columbia, and identified 47.5 % of
the region that we feel should be given a high degree of protection
in order to ensure the persistence of our focal terrestrial and
aquatic species for several hundred years. The initial results of
the CAD process are broad-scale maps and generalized conservation
guidelines over large areas. The
subsequent results of the CAD process are fine-scale maps and
site-specific conservation plans.
This scale is most effective for a "bottom-up"
approach where local residents and groups use the data to guide
on-the-ground efforts to secure conservation easements, purchase
land, provide input into land management planning processes and
otherwise work to ensure that conservation priorities are met.
The results, over a wide landscape, are solutions for pieces
of the larger puzzle that are important to people at a local level. Copies
of the CAD and related reports can be found at http://www.savespiritbear.org/
In 2005 and 2006 we
plan to extend the broad-scale analysis across the border to include
the Interior Cedar-Hemlock forests in Washington, Idaho, and
Montana. As soon as
that is completed we will develop fine-scale designs of core areas
and corridors for key regions of this study area using a
higher-resolution habitat suitability modeling approach and
least-cost-path methodology.
Old-growth rainforests
are among the most biologically rich and diverse ecosystems in the
world. Coastal
temperate rainforests are estimated to comprise only 2% of earth's
ecosystems. In North
America, the Inland Rainforest or Interior Cedar-Hemlock Forest is
an even rarer type. Inland
Rainforests occur in a small area in southeastern British Columbia
and, to a lesser extent, northern Idaho, Washington and Montana.
Located in North
America's wettest inland mountain valleys, these forests are
distinguished by a predominance of western red cedar, western
hemlock, and many typically coastal species of lichens. Several old
cedar trees have been documented to be over 2,000 years old.
Old-growth stands provide critical habitat for several
species at risk, including grizzly bears, woodland caribou, and bull
trout. Woodland caribou
are now extinct in Montana, endangered in Idaho, and classified as a
"species at risk" in southern British Columbia.
Bull trout are classified as threatened in the U.S and "at
risk" in British Columbia.
To identify the
remaining areas of the Interior Cedar-Hemlock Forest that are
priorities for conservation, the Craighead Environmental Research
Institute has refined a method that focuses on mapping critical
habitat for six focal species: grizzly bear, wolf, wolverine, lynx,
cougar, and mountain caribou. Our
basic assumption is that if we can maintain healthy populations of
these six species we can protect biodiversity and healthy
ecosystems. To do this
we develop computer-based habitat suitability models for each of the
six terrestrial focal species. Our results identify habitat
concentration areas (cores) for each species that are then merged
into composites of these areas that could satisfy needs for several
species. We then use least-cost-path connectivity methods to
identify probable movement corridors between core areas. Next we
model priority aquatic habitat for salmon and for threatened fish
species. To evaluate our results we compare them with other modeling
approaches, conduct rigorous statistical and optimization analyses,
and validate them on-the-ground through workshops and field surveys.
We will incorporate other existing conservation plan results with
our focal species results to develop a comprehensive Conservation
Area Design (CAD) encompassing both BC and US regions.

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To
implement conservation we disseminate the results and
recommendations to local decision-makers, public lands managers,
private landowners and land trusts, media outlets, conservation
groups, and other interested parties to increase public
understanding and to guide appropriate protection and management
of critical lands.
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Our
strategy as an organization is to continue establishing CERI as
a leading source for research related to wildlife and wildlife
habitat, with relevance to conservation issues. A key part of
our research niche is our ability to communicate our results and
work cooperatively with other scientists as well as with
conservation activists. Our partnerships have greatly increased
our capacity for both research and communication, and have
broadened our base of financial and organizational support.
- We have refined our 2-scale modeling method
utilizing a broad-scale model and fine-scale models for
analyzing habitat quality and connectivity for key wildlife
species. He
developed a modeling approach using ESRI ArcGIS Modelbuilder
format which makes it more efficient, easier to use and modify,
and amenable to sensitivity analysis.
We now have a habitat modeling approach that can be
adapted to any landscape in the US and Canada for almost any
wildlife species.
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