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Published byKelly Ferguson Modified over 9 years ago
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Forest Health Monitoring
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Aerial survey Annual ‘first cut’ at detecting and assessing forest health disturbancesAnnual ‘first cut’ at detecting and assessing forest health disturbances 15,545,310 acres surveyed in 201115,545,310 acres surveyed in 2011 –State, federal and private lands flown Nearly 75 hours of flight timeNearly 75 hours of flight time Transect-based survey system usedTransect-based survey system used –4 to 6-mile wide transects –2500 to 5000 ft. altitude –Digital Aerial Sketchmapping System (DASM)
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DASM Tablet PCTablet PC Customized GIS softwareCustomized GIS software GPS-linkedGPS-linked High-resolution satellite imageryHigh-resolution satellite imagery Screen digitizingScreen digitizing
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Aerial Survey Flight Lines - 2011
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Aerial Survey Results - 2011
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Aerial survey How the information is usedHow the information is used –Annual reports to USFS –Outreach (e.g. Forest Health Highlights) –Prioritizing MDNR management activities Aids with rapid response to potentially damaging agentsAids with rapid response to potentially damaging agents E.g. Compartment inventory pre-reviewsE.g. Compartment inventory pre-reviews
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MDNR forest compartments (current entry year in blue) EAB outliers with 5-mile buffer Gypsy moth defoliation Forest tent caterpillar defoliation Traverse City Management Unit
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National Insect & Disease Risk Map Project Risk of mortality from major forest insect & disease agentsRisk of mortality from major forest insect & disease agents –25% or greater loss of standing live volume of trees over 1” DBH over the next 15 years Forest health specialists provide biological inputForest health specialists provide biological input GIS specialists run models and provide output for reviewGIS specialists run models and provide output for review
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National Insect & Disease Risk Map Project Constructing the map 180 Models employed180 Models employed 46 I&D agents represented46 I&D agents represented Over 100 tree species includedOver 100 tree species included
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Jack pine budworm: Determining risk National Insect & Disease Risk Map Project
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Early Detection Surveys Asian longhorned beetleAsian longhorned beetle Hemlock woolly adelgidHemlock woolly adelgid Thousand Cankers DiseaseThousand Cankers Disease
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Asian longhorned beetle 16 PRD Surveyors16 PRD Surveyors –Trained by MDNR –Staged infestations –Spring field trip to Clermont County, OH 35 State Parks35 State Parks –2 visits Leaf-onLeaf-on Leaf-offLeaf-off Ground surveys –Binoculars –Risk-based approach Parks stratified by: –Host species –Campsite proximity High-risk zip codes Tree decline
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Hemlock woolly adelgid Natural stands of hemlock –Proximity to 2010 finds Emmet County Ottawa County –HWA Hazard Zones Elongate hemlock scale
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Armored scale introduced to U.S. in early 1900’s Both HWA and EHS contribute to early stages of hemlock decline Advanced stages of decline correlated with EHS but not HWA (where both occur) Damaging outbreaks of EHS may be enabled by HWA feeding
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Thousand Cankers Disease
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Walnut twig beetle, Pityophthorous juglandis WTB larval galleries Staining adjacent to galleries Coalescing cankers, Geosmithia sp
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Thousand Cankers Disease 30 walnut locations30 walnut locations –Lower 3 tier of counties in Lower Peninsula Walnut CouncilWalnut Council Consultant forestersConsultant foresters Urban community forestsUrban community forests Walnut in proximity to millsWalnut in proximity to mills –Visual surveys (decline) –Pheromone trapping
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