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6.44k
from fishing, hunting, and wildlife watching (U.S. Census
Bureau 2011). Florida’s 13,576 km of coastline leaves
many of its ecosystems vulnerable to sea level rise (SLR),
Journal of Fish and Wildlife Management | www.fwspubs.org June 2020 | Volume 11 | Issue 1 | 174
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in addition to threats from urban development, increasing temperature, and altered precipitation regimes (Noss
2011).
Setting conservation targets, the measurable expressions of desired resource conditions, is a commonly used
means for natural resource managers to focus their
conservation needs and goals (Groves et al. 2002; Parrish
et al. 2003). Conservation practitioners have assessed
and prioritized the conservation needs of Florida’s
species, habitats, and ecosystems (e.g., Florida Natural
Areas Inventory 2000, 2018; Oetting et al. 2016). Decades
ago, 44% of Florida’s vertebrate species were reported to
be in population decline (Millsap et al. 1990). Since that
time, environmental conditions have worsened because
of increasing urbanization (Terando et al. 2014) and SLR
(Noss 2011). These declines in ecosystem health and
function emphasize the need for Florida’s natural
resource managers to set conservation targets as a way
to prioritize ecosystem needs and focus resources
toward achieving conservation goals.
The Peninsular Florida Landscape Conservation Cooperative (PFLCC), a public–private partnership focused on
applied conservation science to inform management
decisions, renewed efforts to establish conservation
targets across the state of Florida. The PFLCC had an
advantage of developing targets in a data-rich state and
was able to make use of existing conservation and
management plans as well as research and monitoring
data, such as the Florida Natural Areas Inventory’s
statewide Conservation Needs Assessment, the Critical
Lands and Waters Identification Project (CLIP), Florida
2060 projected urban development, and Florida’s State
Wildlife Action Plan for conserving wildlife and natural
areas. The PFLCC subsequently developed a formal
process for establishing conservation targets and then
worked with subject matter experts to define which
ecosystems were in greatest need of protection and
selected explicit targets for conservation into the future
(Romanach et al. 2016). ˜
The objective of our work was to model susceptibility
scenarios resulting from urbanization and SLR to
understand potential future impacts on the PFLCC’s
conservation targets. We modeled six scenarios of
urbanization and SLR to understand the future susceptibility of a subset of PFLCC conservation targets. We
used conservation targets for three of the PFLCC’s major
categories for protection, termed Priority Resources
(Romanach et al. 2016)—High Pine and Scrub, Coastal ˜
Uplands, and Freshwater Aquatics—the three Priority
Resources for which the PFLCC had defined conservation
targets at the time of writing. The six scenarios were all
possible combinations of intermediate and high SLR
paired with two types of urbanization projections,
sprawling and compact, for both 2040 and 2070. Our
outputs identify the spatial extent of potential threats to
conservation targets on a statewide scale and provide
the PFLCC with a foundation for the assessment and
monitoring of natural resources, a framework for
prioritizing conservation efforts, and information for
communicating priorities.
Methods
We developed six scenarios of urbanization and SLR to
understand the future susceptibility of 14 of the PFLCC
conservation targets in three Priority Resources (Table 1).
The PFLCC uses the Florida state boundary, broader than
the PFLCC boundary, as the boundary for defining
targets for coordination of conservation efforts with
other landscape conservation cooperatives (Figure 1).
For scenario modeling, we extracted projected urbanized
and inundated areas to create spatial composites of
potential future impacts on conservation targets. We
calculated the amount of area impacted by projected
urbanization and SLR and the percentage of total area
affected of each target, for each scenario.
Priority Resources
Priority Resource definitions were adapted by the
PFLCC from Kawula (2018). High Pine and Scrub is
defined as hills with mesic or xeric woodlands or
shrublands; canopy, if present, is open and consists of
pine or a mixture of pine and deciduous hardwoods
(Data A1, Archived Material). Coastal Uplands is defined
as mesic or xeric communities restricted to barrier islands
and near shore with woody or herbaceous vegetation;
other communities may also occur in coastal environments (Data A2, Archived Material). Freshwater Aquatics
is defined as natural rivers and streams where stream
flow, morphometry, and water chemistry are not
substantially modified by human activities, or native
biota are dominant (Data A3, Archived Material). It also
includes natural inland lakes and ponds where the
trophic state, morphometry, and water chemistry are not
substantially modified by human activities, or native
biota are dominant. All three Priority Resource layers
were obtained from the Critical Land and Waters
Identification Project 4.0 Aggregated Priorities model
(Oetting et al. 2016).
Urbanization
Through consultation with the PFLCC, we selected
three, 1000 Friends of Florida urbanization layers: 1)
Florida 2060 projection for the year 2040 (Zwick and Carr