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North American Bat Monitoring Program (NABat)
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Core Team & Supporters
• Susan Loeb, USFS-SRS• Jeremy Coleman, USFWS• Laura Ellison, USGS• Tom Rodhouse, NPS• Tom Ingersoll, DoD• Cori Lausen, WCS Canada• Wayne Thogmartin, USGS• Kathi Irvine, USGS• John Sauer, USGS• Jonathan Reichard, USFWS
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The Need to Monitor
1) Bat Banding Program (BBP)– US Biological Survey/USFWS
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The Need to Monitor1) Bat Banding Program (BBP) US Biological Survey/USFWS
2) Endangered Species Monitoring
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The Need to Monitor1) Bat Banding Program (BBP) US Biological Survey/USFWS2) Endangered Species Monitoring
3) Estes Park
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National State, Federal, Tribal Response Plan
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National Plan Working Groups
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National Plan Working Groups
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National Plan Working Groups
Goal 1: Develop and validate rapid-assessment monitoring plans to determine differences in susceptibility among species, and identify which species are most vulnerable to extinction due to WNS.
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Loeb & Winters 2013
Humphries et al. 2002
Indiana Bat Summer Distribution Little Brown Bat Winter Distribution
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North American Bat Monitoring Program -- NABat
Vision: A coordinated effort that promotes effective
decision-making and long-term viability of NA bats
Mission:Provide architecture for coordinated bat
monitoring to support local, regional and range-wide inferences about trends in bat populations and abundances
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North American Bat Monitoring Program -- NABat
Vision: A coordinated effort that promotes effective
decision-making and long-term viability of NA bats
Mission:Provide architecture for coordinated bat
monitoring to support local, regional and range-wide inferences about trends in bat distributions and abundances
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NABat
Fundamental Question:How do trends in NA bat distributions &
abundances vary over geographic extents and time periods in relation to WNS, wind energy, CC & conservation actions?Application:
Evaluation of extinction risk and population status at local and regional scales to support conservation planning
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NABat
Fundamental Question:How do trends in NA bat distributions &
abundances vary over geographic extents and time periods in relation to WNS, wind energy, CC & conservation actions?Application:
Evaluation of extinction risk and population status at local and regional scales to support conservation planning
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The Process
• Collaborative• International• Series of 4 workshop
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Targeted Species
• 47 Species – Common to US, Canada, Mexico
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Monitoring Methods
• Acoustic Surveys–Mobile Transects– Stationary Points
• Colony Counts–Hibernacula–Maternity Colonies
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Sampling Design- 10 x 10 km grid
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Sampling Design
• Generalized Randomized Tessellation Stratified (GRTS) Sample
• Spatially balanced approach• Flexible– Grid cells can be dropped for logistical reasons– Grid cells assigned weights or inclusion
probabilities– Can include some samples outside design
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Sampling Design
• Any subset of grid cells is also random and balanced
• Can “over-sample” DoD lands
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Response Design
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Respose Design-Acoustics
--25-48 km transect -2 nights
--2-4 point surveys -4 nights
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Response Design-Colony Counts
• Short-term approach– Strengthen current monitoring efforts by states– Standardized protocols & co-variates– No attempt to fit into grid
• Long-term approach– Use grid to search for new colonies
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Implementation
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Implementation
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Grid Assignment Example
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Caveats/Concerns
• Acoustic identification– Many models, which is correct?– Metadata– Archive original data– Robustness to false +’s and –’s?
• Unknown hibernacula– Particularly in western NA
• Better/alternate analyses?
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Data Management
• Bat Population Data (BPD) Project– USGS, Fort Collins– https://my.usgs.gov/bpd/
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Data Management
• Data Partnerships– Allow NABat access– Restrict other access
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Analysis & Products
• Plan General Technical Report• Analyses– State, regional, and rangewide
analysis– Distribution & abundance
• State of North American Bats Report