FLORIDAForests - Fall/Winter 2017 - 16

FEATURE

A POST-HURRICANE GUIDE
TO MANAGING

INVASIVE
TREE PESTS

Two beetles that attack after storms and how to mitigate damage to pines.
By JEFFREY EICKWORT, Florida Forest Service

IF YOU ASK most foresters which species of pest causes the
greatest concern to their industry, many would immediately
answer the Southern Pine Beetle. While that may be true, two
types of beetles are especially critical during hurricane season.
Entomologists label these beetles - the Black Turpentine Beetle
(BTB) and IPS pine engraver beetle (IPS) - as some of the most
destructive pests of southern pines.
Neither of these beetles are attracted to healthy trees;
however, hurricanes are problematic when it comes to these
pests. Due to three key factors, hurricanes create an especially inviting environment for these beetles within pine trees.
1) Strong winds can damage branches, trunk and roots.
Generally, it's easy to identify wind damage via broken
branches and stems, or trees that are leaning and partially
uprooted. Hidden damage inside the stem or underground,
caused when trees are whipped and bent by the wind, is

much harder to spot. This damage can disrupt the vessels
that carry water and nutrients through the tree, leaving it
weakened and more vulnerable to attack by bark beetles.
2) Rainwater floods trees and causes immediate root damage. Roots become smothered by these waters; therefore, the trees become weakened and their resistance to
beetles' attacks will decrease. This weakening will often
show up the first year forests are hit by a hurricane, which
is usually when bark beetles infest the flooded trees.
3) Salt water from storm surges results in long-term root
damage. Salt from ocean water can remain in the soil for
years after a hurricane's storm surges. Salt can damage
tree roots, causing trees to become stressed and decline
over time. Stressed trees will then release odors that attract
beetles. As a result, the salt water further weakens trees
that are already stressed due to smothering.

HIDDEN DAMAGE INSIDE THE STEM OR UNDERGROUND, CAUSED WHEN TREES ARE
WHIPPED AND BENT BY THE WIND, IS MUCH HARDER TO SPOT. THIS DAMAGE CAN
DISRUPT THE VESSELS THAT CARRY WATER AND NUTRIENTS THROUGH THE TREE,
LEAVING IT WEAKENED AND MORE VULNERABLE TO ATTACK BY BARK BEETLES.

Florida Forests 16 Fall/Winter 2017



Table of Contents for the Digital Edition of FLORIDAForests - Fall/Winter 2017

Executive Outlook
President’s Message
Forestry’s Economic Impact on Florida
Serving Floridians Through Wildfires and Storms
A Post-Hurricane Guide to Managing Invasive Tree Pests
Celebrating the Best in Forestry
Annual Meeting 2017
Log a Load for Kids Makes a Million!
Snapshots
Products & Services Marketplace
Index of Ads/ advertisers.com
FLORIDAForests - Fall/Winter 2017 - Intro
FLORIDAForests - Fall/Winter 2017 - cover1
FLORIDAForests - Fall/Winter 2017 - cover2
FLORIDAForests - Fall/Winter 2017 - 3
FLORIDAForests - Fall/Winter 2017 - 4
FLORIDAForests - Fall/Winter 2017 - 5
FLORIDAForests - Fall/Winter 2017 - Executive Outlook
FLORIDAForests - Fall/Winter 2017 - President’s Message
FLORIDAForests - Fall/Winter 2017 - 8
FLORIDAForests - Fall/Winter 2017 - Forestry’s Economic Impact on Florida
FLORIDAForests - Fall/Winter 2017 - 10
FLORIDAForests - Fall/Winter 2017 - Serving Floridians Through Wildfires and Storms
FLORIDAForests - Fall/Winter 2017 - 12
FLORIDAForests - Fall/Winter 2017 - 13
FLORIDAForests - Fall/Winter 2017 - 14
FLORIDAForests - Fall/Winter 2017 - 15
FLORIDAForests - Fall/Winter 2017 - A Post-Hurricane Guide to Managing Invasive Tree Pests
FLORIDAForests - Fall/Winter 2017 - 17
FLORIDAForests - Fall/Winter 2017 - Celebrating the Best in Forestry
FLORIDAForests - Fall/Winter 2017 - 19
FLORIDAForests - Fall/Winter 2017 - Annual Meeting 2017
FLORIDAForests - Fall/Winter 2017 - 21
FLORIDAForests - Fall/Winter 2017 - 22
FLORIDAForests - Fall/Winter 2017 - Log a Load for Kids Makes a Million!
FLORIDAForests - Fall/Winter 2017 - Snapshots
FLORIDAForests - Fall/Winter 2017 - 25
FLORIDAForests - Fall/Winter 2017 - 26
FLORIDAForests - Fall/Winter 2017 - 27
FLORIDAForests - Fall/Winter 2017 - Products & Services Marketplace
FLORIDAForests - Fall/Winter 2017 - 29
FLORIDAForests - Fall/Winter 2017 - Index of Ads/ advertisers.com
FLORIDAForests - Fall/Winter 2017 - cover3
FLORIDAForests - Fall/Winter 2017 - cover4
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