“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  

DENVER  1875  

Colorado  Front  Range  

Denver  Parks  and  Parkways  

Denver  Mountain  Parks  

55  Miles  West  

Evergreen  Colorado    9,000  people  and  3,500  homes  

Fuel  Reduc*on    

Stand  Thinning    

Managing  Slash  

The  Dangers  of  Controlled  Burns    

Colorado  Springs  

Waldo  Canyon  Fire  

Mountain  Pine  Beetle  and  Fire  

Post  Fire  

Watershed  Protec*on  

Erosion  Control  

Restora*on  Efforts  

Colorado  State  Forest  Service  Nursery  

Natural  Regenera*on  

THANKS  FROM  DENVER  

Bugs  that  Bug  Trees:  What  Openlands  TreeKeepers  and  

other  volunteers  can  do:      A  presenta?on  to    

the  Alliance  for  Community  Trees  

November  13,  2012          

Not  all  insect  pests  are  equal:  fall  webworm  

1/3” to ½” long

1/8” wide

Metallic green

Black eyes

Public  Enemy  #1:      Emerald  Ash  Borer  

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.  

Training  from  Experts:  APHIS  staff  presents  to  

TreeKeepers    

•  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.  

Recognizing  signs:    EAB  Life  Cycle  -­‐  Larvae  

Three  different  stages  of  EAB  larvae.    (D.  Cappaert,  MSU)

Larval  EAB  feeding  on  an  ash  tree's  vascular  ?ssue.    (J.  Ellis,  Purdue  University)

S-­‐shaped  feeding  galleries  under  ash  bark.    (Ed  Czerwinski,  Ontario  Ministry  of  Natural  Resources)

Recognizing  Signs:    Tracks  

   

•  Adult  beetles  •  Larvae  •  D-­‐shaped  emergence  holes  •  Bark  splits  with  loose  bark  sloughing  

off  •  S-­‐shaped  or  serpen*ne  larval  galleries  

Visual  Survey  -­‐  Signs  

Visible  signs:  the  "D"  hole  

Cambium  damage  &  bark  splizng  

Recognizing  Signs:    Crown  die-­‐back  

Tool  #2:    Tree  Inventories  

Tool  #  3:  Plan*ng  Trees  to  Replace  Ashes:  

North  Park  Village  Nature  Center/Chicago  

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

Aqer  Tree  Plan*ng:    Bobolink  Woods  Natural  

Area/Jackson  Park  

Other  pests:    Gypsy  Moth  

 TreeKeepers  Collec*ng  Gypsy  

Moth  Cadavers  

TreeKeepers  support  Illinois  monitoring  effort    

with  Gypsy  Moth  Traps  

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

Bag  Worms:    TreeKeepers    

help  iden*fy  &  remove  

Our  goal:      A  Healthy  Urban  Forest