During the Alliance for Community Trees "ACTrees Day" Annual Meeting in Sacramento, CA, on November 13, 2012, moderator Scott Jamieson led a panel discussion on how local community tree leaders are handling disastrous threats to urban forests, including invasive species, fires, and drought. Speakers included Rob Davis of the City of Denver, Glenda Daniel of Openlands, and Barry Ward of Trees for Houston. Learn more about ACTrees Day at http://ACTrees.org/what-we-do/training-and-conferences/annual-meeting/

1. “Bugs, Fire and Rainless Days”
Moderator ScoE Jamieson,
ACTrees
Vice
President,
Bartle-
Tree
Experts
Vice
President
• Rob Davis,
Denver
City
Forester,
Denver,
CO
• Glenda Daniel,
Associate
Director,
Openlands,
Chicago,
IL
• Barry Ward,
Execu*ve
Director,
Trees
for
Houston,
Houston,
TX

3. DENVER
1875

4. Colorado
Front
Range

5. Denver
Parks
and
Parkways

6. Denver
Mountain
Parks

7. 55
Miles
West

8. Evergreen
Colorado
9,000
people
and
3,500
homes

9. Fuel
Reduc*on

10. Stand
Thinning

11. Managing
Slash

12. The
Dangers
of
Controlled
Burns

13. Colorado
Springs

14. Waldo
Canyon
Fire

15. Mountain
Pine
Beetle
and
Fire

16. Post
Fire

17. Watershed
Protec*on

18. Erosion
Control

19. Restora*on
Efforts

20. Colorado
State
Forest
Service
Nursery

21. Natural
Regenera*on

22. THANKS
FROM
DENVER

23. Bugs that Bug Trees:
What Openlands TreeKeepers and
other volunteers can do:
A presenta?on to
the Alliance for Community Trees
November 13, 2012

24. Not
all
insect
pests
are
equal:
fall
webworm

25. Public
Enemy
#1:
Emerald
Ash
Borer
1/3” to ½” long
1/8” wide
Metallic green
Black eyes

26. Tools
in
Our
Toolbox
• Learning
to
recognize
the
signs
of
infesta*on-­‐-­‐
gezng
training
from
experts
• Tree
inventories
to
locate
ash
trees
in
areas
of
high
infesta*on-­‐-­‐to
help
public
agency
long-­‐
term
planning
• Plan*ng
new
trees
where
ashes
are
likely
to
come
down
in
the
next
few
years.

27. Training
from
Experts:
APHIS
staff
presents
to
TreeKeepers

28. Recognizing
signs:
EAB
Life
Cycle
-­‐
Larvae
Three different stages of EAB larvae. Larval EAB feeding on an ash tree's vascular S-­‐shaped feeding galleries under ash bark.
(D. Cappaert, MSU) ?ssue. (Ed Czerwinski, Ontario Ministry of Natural Resources)
(J. Ellis, Purdue University)
• Aqer
hatching,
larvae
bore
through
bark
to
feed
on
the
trees'
vascular
*ssue.
• Growing
larvae
zigzag
through
this
delicate
*ssue
as
they
feed,
forming
S-­‐shaped
tunnels
that
are
flat
and
wide.
• Mature
larvae
are
about
1
inch
long;
they
are
creamy
white,
flat,
and
have
“bell”
shaped
segments.
• Larvae
spend
the
winter
under
bark.

29. Recognizing
Signs:
Tracks

30. Visual
Survey
-­‐
Signs
• Adult
beetles
• Larvae
• D-­‐shaped
emergence
holes
• Bark
splits
with
loose
bark
sloughing
off
• S-­‐shaped
or
serpen*ne
larval
galleries

31. Visible
signs:
the
"D"
hole

32. Cambium
damage
&
bark
splizng

33. Recognizing
Signs:
Crown
die-­‐back

34. Tool
#2:
Tree
Inventories

35. Tool
#
3:
Plan*ng
Trees
to
Replace
Ashes:
North
Park
Village
Nature
Center/Chicago

36. Tree
Plan*ng:
Lincoln
Park
by
Montrose
Harbor/Chicago

37. Aqer
Tree
Plan*ng:
Bobolink
Woods
Natural
Area/Jackson
Park

38. Other
pests:
Gypsy
Moth

39.
TreeKeepers
Collec*ng
Gypsy
Moth
Cadavers

40. TreeKeepers
support
Illinois
monitoring
effort
with
Gypsy
Moth
Traps

41. Asian
Long-­‐Horned
Beetle:
Gone
from
Chicago
but
could
return

42. Bag
Worms:
TreeKeepers
help
iden*fy
&
remove

43. Our
goal:
A
Healthy
Urban
Forest