Eastern hemlock Tsuga canadensis (Pinaceae). river birch Betula nigra (Betulaceae)
Harvard Forest Schoolyard Ecology The Woolly Bully · 2020. 2. 18. · Eastern Hemlock Tsuga...
Transcript of Harvard Forest Schoolyard Ecology The Woolly Bully · 2020. 2. 18. · Eastern Hemlock Tsuga...
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Harvard Forest Schoolyard Ecology The Woolly Bully
Dan Guertin
April 11, 2012
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Ralph C. Mahar Regional School
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Integration into Curriculum
• Integrated into existing units in my conservation/ecology class
– Not stand alone project
– Revisited throughout course
– Ecosystems, feeding interactions, biological controls, invasive species
– New major component of Native Tree Study
• Students construct electronic field guides
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Eastern Hemlock Tsuga canadensis
• Leaves: .6 - .9 inches long flat under is blue/green top is shiny green/yellow slightly toothed near apex • Bark: brown deep narrow openings scaly • Fruit: egg shape .6 – 1 inch long .4 - .6 inch wide red/brown ovate scales • Bud: egg shape small, .05 - .1 inch long blunt chestnut brown • Height: 100 feet • Commercial Value: railway ties, pulp, timber, general construction, boxes and crates
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Before going outside, consider…
• Medical complications-
• Communication
• Bug Spray list-Mahar
• Supervision
• Expectations!
• School Rules
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Research protocol-in classroom
• Students never have heard of Woolly Adelgid
• Provide background knowledge
– Overview of woolly adelgid
• Introduction into US
• Distribution
• Spread
– Important to study now!
– Hemlock identification
• Pine, spruce, hemlock
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Identification of plots
• Dictated with lower level – Location vs. risk/trust
• Micro-climates- Advanced level
• Aquatic • Shade • Direct sun • Open area • Other species • Age of hemlock
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Research Protocol
• Supplies – Identification markers
– Data sheet
– Writing utensils
• Removal of tags- map the area – Compass
– Multiple measuring devices
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Research-Part 1
• Tag branches
• Measurements
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Research-Part 2
• Hypothesize
– microclimates
• Locate
• investigate
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Identification of Woolly Adelgid Eggs
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Woolly Adelgid Eggs-Identification Problems?
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Woolly Adelgid Eggs-Identification Problems?
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Woolly Adelgid Year 2
• Continue Research
• Expand measurement areas
• Bring in expert?