Student Presentations

Silvics of Ailanthus: native to China and Taiwan, Invasive, Used for construction/tool handles

Allegheny National Forest: 514,000 acres , PA’s only national forest, Kinzua Dam and Reservoir: protection and hydroelectric power

Anatomy of Woody Stems: Heartwood (dead inner layer for support), Sapwood (transport system, store food), Phloem (transports carbohydrates)

Andrew Jackson Downing: self - educated, newspaper and journal articles abt horticulture, founder of american landscape architecture

Bartram’s Garden: home to rarest and most endangered trees in US, pretty garden for many land uses (weddings, community outreach, fishing)

Benlate (fungicide): active ingredient benomyl, dust/dip/spray on plants, control fungal diseases (1968)

Black Oak: eastern part of US, widely used/common (flooring/trim), medicinal bark

Chestnut Oak: appalachian mountains in US, monoecious, Oak wilt

Clearcutting: all trees in stand removed in 1 harvest, rapid regeneration, habitat disruption

Daniel J. Robison: Masters in silviculture, Dean of College of Ag and Life Sciences at Iowa St, 52 publications

Fencing to Exclude deer: Buck’s antlers can cause damage due to rubbing, wire/electrical/plastic fencing, electric expensive and plastic is cheap

Deer Repellents:  Deer are adaptable/ pattern - followers, natural or chemical deer repellent, no deer spray is 100% effective

Delaware Water Gap National Rec Area: 70,000 acres, 40 miles of Delaware River, 9 total waterfalls

Donald D. Davis: forest pathologist for US Forestry Service, 2 fulbright awards, 50 yrs at penn state agricultural college

Epicormic sprouts: stress response, trying to save tree from being harmed, especially useful for growth after fire

Fairmount Park: largest landscaped urban park in the world, creative to protect public water supply, Philadelphia PA

False Rings: caused by abrupt changes, large trees have more than small trees, rings are very small themselves

FIA: long-term & consistent monitoring of forests, data gap/climate change challenges, founded in 1928

Fire as a silvicultural tool: spring/summer is best, public concerts (air quality/liability risks), reduces competition

Increment borer: extracts small section of wood tissue, auger/handle/extractor, measures tree growth and age

Invasive plant species in urban forests: trees+people+infrastructure = urban forests, english ivy blocks sunlight for tree, tree-of-heaven has pollen

Jennifer Gagnon: masters in silviculture, focus on stand regeneration, publications on longleaf pines flatwoods ecosystems

Loblolly Pine: Pinus taeda, monoecious, major source of timber in southeastern U.S.

Longleaf Pine: Pinus palustris, grows best in warm/wet climates, shade intolerant (needs full sun)

Marc Abrams: teaches forest ecology & tree physiology, impacts on fire ecology, published book on old-growth forests

Matthew Kasson: over 70 publications, has a podcast abt plant pathology (plantopia), former director of INVAM (international collection of arbuscular mycorrhizal fungi)

Natural regeneration: plants replace themselves without human help, cheap & sustainable, seed or vegetative regeneration

Northern Red Oak: Quercus rubra, ridged bark with silver stripes, heavy and hard wood for furniture and veneer

Orthene: insecticide with active ingredient Acephate, registered by EPA for pest regulation, moderately toxic to birds

PA’s champion trees: biggest species (height/circumference/crown), lots of historical significance, urban development is a threat

Patrick Brose: published over 90 research papers, PHD in forest resources from Clemson, he says “leave the world better than you found it”

Provinces of PA: coastal plain along delaware river, piedmont has open rolling hills, central lowlands along Lake Erie

Red Maple: acer rubrum, one of most common trees in eastern North America, common landscape tree due to fall colors

Root Grafting: same species roots fuse together (vascular connection), good for resource sharing, can transmit diseases

Saw Palmetto: native to florida, fire tolerant, tangled mass of branches w/ long spiky leaves

Scarlet Oak: quercus coccinea, good seed crop every 3-5 years, more likely in areas with fire

Seed Tree Method: forest regeneration that mimics natural disaster, best trees of desired species are left, very cost effective

Spongy moth: native to eurasia, cause $200 mil in damage annually, females can lay 600-1000 eggs

Susquehanna River: around 300 mil yrs old, leading industry is agriculture, supplies 6.1 million ppl water on Susquehanna River Basin

Verticillium Nonalfalfae: naturally occurring deadly fungus, first isolated by Don Davis, can cause allergic reactions in humans

White Oak: quercus alba, slow growing trees, around 100 ft tall

Yellow Poplar: liriodendron tulipifera, 300 years old, honey/lumber/food/shelter

Eric Wiseman: living?/eligible?/verified?, threats are time/weather, his mission is to promote care and protection of all trees