alaska department of natural resources - jamie trammell...
TRANSCRIPT
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Rapid Ecoregional Assessments
Jamie Trammell Landscape Ecologist
Assistant Professor of Environmental Studies
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University of Alaska • Alaska Center for Conservation Science
• Alaska Natural Heritage Program (AKNHP-UAA)
• Geography and Environmental Studies Department (GES-UAA)
• Institute of Social and Economic Research (ISER - UAA)
• Scenarios Network for Alaska & Arctic Planning (SNAP - UAF)
• Margaret J King & King & Associates
Bureau of Land Management • National Operation Center (NOC) • Alaska State Office • Anchorage, Central Yukon and Arctic Field Office
Project Team
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Bureau of Land Management • Scott Guyer • Aliza Segal • Karen Kelleher • Jason Taylor • Travis Haby • Tim Hammond • Cindy Hamfler
Assessment Management Team • Bureau of Land Management • Fish and Wildlife Service • National Park Service • Alaska Department of National
Resources • Alaska Department of Fish and
Game • US Geological Survey • North Slope Science Initiative • North Slope Borough • North Star Borough • Northwest Arctic Borough
Review
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Monitoring Frameworks
Regional Conservation
Strategy
Mitigation Programs
Rapid Ecoregional Assessments
Science Integration
Landscape Approach
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What is a Rapid Ecoregional Assessment? Determine ecological values, conditions, and trends within large, regionally connected areas that have similar environmental characteristics
Identify important resource values and patterns of environmental change that may not be evident on smaller scales
Gauge the potential of these species and habitats to be affected by change agents
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An REA is a rapid assessment of an ecoregion's key elements (Conservation Elements), the landscape-drivers (Change Agents) that impact them, and their current and future status.
Change Agents Climate Change Development
Invasives Fire
Conservation Elements Wildlife
Vegetation Soils
Aquatic Habitat
Status Current
Near-term Long-term
Management Questions
Socioeconomic Condition
Subsistence
What is an REA?
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REAs
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Management Question Tract Science/Ecosystem Tract
Identification of species/habitats and landscape drivers that are significant for resource managers
Conceptual Model
Identification of regionally significant CEs and CAs integral to model
Identify regional needs of resource managers
Management and ecosystem-derived CEs and CAs are integrated to create a final suite for consideration by the AMT.
Selecting Conservation Elements and Change Agents: Integration of Management and Science
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REA Boundaries in Alaska
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Central Yukon REA Land Stewardship
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Conservation Elements
Regionally important terrestrial ecological features, functions, or services
Regionally important aquatic ecological features, functions, or services
Native fish, wildlife, or plants of regional concern
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Change Agents
Fire
Invasive Species
Anthropogenic Uses
Climate Change
Permafrost
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Integrated Analyses Assess status of key ecological values
Forecast trends
Identify management opportunities
Identify data gaps and science needs
Provide information and tools… but do not make decisions or allocate resources
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• Baseline conservation data synthesis • Distribution models for key ecosystem resources
– Conceptual model of how the ecosystem works – Following coarse-filter fine-filter approach
• Distribution models for major agents of change – Climate, wildfire, invasive species, human development
and permafrost
• Intersection of two to show current and future (2025 & 2060) condition of ecological resources
Key Outcomes from an REA
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Management Questions
Delphi method of prioritizing 20-30 Management Questions to guide assessment
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Example MQ from YKL REA
Landcover classes and floodplains that could support Musk Ox
Winter and Summer Vegetation (landcover classes)Tall Shrub (Open-Closed) (Floodplain) GoodLow Shrub (Floodplain) GoodHerbaceous (Wet) Good Herbaceous (Mesic) Good Tall Shrub (Open-Closed) ModerateLow Shrub ModerateLow Shrub/Lichen ModerateDwarf Shrub ModerateDwarf Shrub-Lichen Moderate
Is there musk ox habitat in the region, and, if so, how might it change in the future?
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Management Questions MQ 10 Where are key prey species located in the region?
Northern red-backed vole Nearctic brown lemming Snowshoe hare
“Prey species” considered for this question include small and medium-bodied herbivores, as they provide food for a wide-range of avian and mammalian predators
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Terrestrial Conservation Elements
Habitats and Species
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Terrestrial Habitats Tidal marsh Marine beach
Rare ecosystem with high bird use Unique vegetation for the North Slope and separate shallow lagoons
Coastal plain wetland Coastal plain moist tundra
Coastal plain matrix forming habitat supporting many species
Coastal plain matrix forming habitat supporting many species
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Terrestrial Species Important as consumers but also as prey (including carcasses) for the large and medium-sized predators. Important subsistence resources.
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Distribution Models
American beaver Trumpeter swan Gray-cheeked thrush Snowshoe hare
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Distribution Models
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Large and Small Streams
Aquatic Habitats Shallow Lakes Deep Lakes
Overwintering habitat for fish. Summer foraging habitats.
High stream connectivity in the summer, source of freshwater and silt to river deltas; important spawning, rearing, and overwintering habitat.
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Broad whitefish Arctic grayling
Dolly Varden Burbot
Chum salmon
Aquatic Species
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Chinook salmon Dolly Varden
Fish Distribution Maps
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Change Agents
Climate Change
Fire
Permafrost
Human Use
Invasive Species
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Climate Change
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Fire
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Permafrost
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Invasive Species
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Density of Invasive Species
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Current Human Footprint
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Current Human Footprint
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Change Agent Intersections
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Integrated Products
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Landscape Condition Model
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Landscape Condition Model
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Landscape Condition Model
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Landscape Condition Model
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Very Low Low Medium High Very High
Landscape condition (Current, Near-term, Long-term)
Landscape Condition Model & Fish
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Future Species Status
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Temperature American
Beaver
• Beaver densities are temperature dependent, with greater densities above > 14.8°C (optimal temperature threshold)
• Increasing ambient temperatures in the YKL will could result in higher beaver densities
• This effect will be most pronounced in the northern half of the REA, from McGrath northward
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Cumulative Impacts
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Cumulative Impacts
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Cumulative Impacts
Near-Term (2025)
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Cumulative Impacts
Long-Term (2060)
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• REA Home Page – http://www.blm.gov/wo/st/en/prog/more/
Landscape_Approach.html
• REA Q&A – http://www.blm.gov/wo/st/en/prog/more/
Landscape_Approach/reas/assessmentsqa.html
• REA Data Portal – http://www.landscape.blm.gov/geoportal/
REA Resources
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Rapid Ecoregional Assessments Vimeo Channel http://vimeo.com/channels/ecoregional
REA Resources
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http://www.blm.gov/wo/st/en/prog/more/Landscape_Approach/reas/dataportal.html
REA Data Portal
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THANK YOU
QUESTIONS??
COMMENTS??
[email protected] http://www.uaa.alaska.edu/ges/faculty/trammell.cfm