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Nature Conservancy tree prezi

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Frederick Strobel

on 29 October 2013

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Transcript of Nature Conservancy tree prezi

Trees in Tennessee are facing a serious
But why are our trees so important?
Services provided by a single urban tree
and there are 284 million
urban trees in Tennessee
$639 million in
services provided
We need your help to
stop their advance.

Annual U.S. impact of urban tree loss due to pests/pathogens:
Local governments:
$2 Billion
$1 Billion
Reduced property values:
$1.5 Billion (USFS)
Adults are small and can be difficult to detect
Instead, focus your search on tree damage patterns (like the epicormic shoots) and look for D-shaped exit holes
firewood, wood packing materials, pallets, humans

A fungal disease that attacks walnut trees
Transported by the walnut twig beetle, which is reddish-brown and smaller than a grain of rice
Fungal infections spread and prevent growth of the tree by cutting off all sap transport
Black walnut trees die in around three years after TCD symptoms are observed
Thousand Cankers Disease – Walnut Twig Beetle

Leaf damage from Gypsy Moth

More tree symptoms:

ALB exit holes are straight bore and roughly dime-sized

Photos thanks to ForestryImages.org


Where you'll find the Asian Longhorn Beetle:
Old egg site (2+ yrs)

Recent egg site

Fresh egg site with sap

Sawdust collecting on branch

Large 1” – 1 ½” long body
Shiny black with around 20 white spots
Very long white and black striped antennae
Can have blue-ish feet
Beetles most often seen in
summer (June – August)
Commonly abbreviated ALB

Small ½” long beetle
Bright metallic green color
Coppery-red underside
Adults usually emerge during late spring and summer
Larvae are flat, white, and around one inch long
Larvae have bell-shaped segments

All North American Ash Trees are susceptible
Pattern of Ash trees dying on top while becoming "bushy" on the base is common with EAB
Wilting and yellowing leaves
Live sprouts at the base of the tree are called "epicormic shoots"
Larvae feed on inner bark causing splits or cracks in the bark
Characteristic D-shaped holes
Severe damage to the wood just beneath the bark
Tunneling areas are called "galleries" and are a classic sign of established EAB
D-shaped exit holes can be difficult to detect, so look for galleries under cracked bark
Look for signs of heavy woodpecker feeding

Adult beetles are present June through August
Beetles bore deeply into trunk and can survive in interior for a long time
Tree damage is easier to spot when there are no leaves on the trees, i.e. fall/winter surveys
wood products, firewood, humans

Adults produce white wool-like covering
Easiest to find by looking under these cottony masses under needles
Adults are tiny – only 1/16 inch long and difficult to find
Trees appear thin and grayish-green
White woolly masses at base of a tree's needles are the easiest symptoms to find
White woolly egg mass on underside of needles
“Wool” is easier to spot in low light, like shade or on overcast days
Look for “wool” or nymphs on trees with graying and dying branches
birds, nursery stock, firewood, humans
Holes in leaves and extensive defoliation of trees may occur
Can feed on over 300 species of trees and shrubs
Favor oak, apple, alder, basswood, birch, poplar, sweet gum, willow, and hawthorn

Look for adults, caterpillars or egg masses on trees or objects left outside
Leaf damage or defoliation of the tree
Look for caterpillars in large groups feeding on trees
camping equipment, firewood, vehicles
0.75” to 1.25” long as adults
Males (left) are tan to brown
Females are:
Flightless, though they possess long wings
Caterpillars have blue and red spots

Thousand cankers disease attacks black walnut trees, walnut hybrids and Arizona walnut
English walnut does not appear very susceptible
Best symptom to look for is yellowing leaves high on the tree
Upper branches will then start to die off
Take Action!
Spot and report pests

Write down the location and pest/damage
information, then take a few pictures of what you see.

Get more information or report online at
Protect TN Forests: http://protecttnforests.org
Call Forest Health Specialist: (615) 837-5520

Download the EDDMAPS Phone
app to report pests. Free and available for
download at iTunes or Google Play.

Trees are the roots of our community,
but many of them are in danger.
Black Walnut
Eastern & Carolina Hemlock
American Basswood
Tennessee trees removed pollutants,
filtered water, stored carbon and saved
$66 million in 2009
Tree-killing insects and diseases are frequently transported to new areas via:
Nursery plants
Pallets, crates, and other solid wood packaging
Firewood movement
Pests hitchhike inside or on the surface of the above materials, accidentally introducing them to new places and infesting new trees.
Because they’re not native pests, trees usually have no defense against them.

Foliage yellows, progresses to brown and wilts until the whole branch dies
Look for dead or sickly branches
New leafy branches may sprout on the base of the trunk
Numerous tiny beetle holes on dead and dying branches
Help Keep Tennessee Trees Healthy
Disease could attack northern red oak and pin oak in eastern forests
Ramorum blight symptoms in eastern oaks are very similar to
Oak Wilt
Oak Decline
Red Oak Borer
Shrubs such as rhododendrons, mountain laurel, viburnums and many other are potential hosts for this pathogen.
•Ramorum Blight / Sudden Oak Death is caused by pathogen known as a water mold
•Currently present in patches along coast of California and southwest Oregon
•Multiple historical occurrences of this pathogen in Eastern plant nurseries and water sources
•Difficult to diagnose without laboratory analysis
•Infested oaks develop cankers on trunk with red-brown to black discoloration or oozing, usually 3 – 6 feet off of the ground
•Rapid browning of oak leaves gave it the name “Sudden Oak Death” in Western infested states
•Shrubs and non-oak trees are affected differently
Leaf browning
Twig and stem die-back
Gypsy Moth
Hemlock Woolly Adelgid
Emerald Ash Borer
Asian Longhorn Beetle
Ramorum Blight
Signs a tree is infested:
Identifying the EAB
Where you'll find the Emerald Ash Borer
Signs a tree is infested:
Where you'll find the Hemlock Woolly Adelgid
Signs a tree is infested
Identifying the Gypsy Moth
Where you'll find the Gypsy Moth:
Signs a tree is infested
Signs a tree is infested:
Where you'll find Thousand Cankers Disease:
Signs a tree is infested:
Signs a tree is infested
File a report...
increase property value
minimize temperature extremes
reduce cooling costs up to
reduce stormwater run-off
clean air and mitigate climate change
This Presentation Was Produced By TNC
Thank You To Our Partners
TN Department of Agriculture - Division of Regulatory Services
USDA - Forest Service
TN Department of Agriculture - Division of Forestry
University of Tennessee - Department of Entomology and Plant Pathology
University of Tennessee - Extension Services
City of Chattanooga
Supports the Healthy Trees
Healthy Tennessee Program
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