Weathering the “Perfect Storm”

395 views

Published on

Weathering the “Perfect Storm”

Philip Gruszka, Pittsburgh Parks Conservancy

About:
In 2010, emerald ash borer was detected 11 miles north of Pittsburgh, this same year the cities most "natural" park was confirmed with oak wilt disease. Park managers saw an unprecedented convergence of destructive insects and diseases. Without the right information and resources, mitigation efforts were hopeless in an economy that has the City challenged to fund the most basic functions of government.

Published in: Education, Technology, Business
  • Be the first to comment

Weathering the “Perfect Storm”

  1. 1. Weathering the Perfect Storm Philip Gruszka Director of Parks Management and Maintenance Pittsburgh Parks Conservancy
  2. 2. Tree action plan Started in 2002 With EAB reported In Detroit
  3. 3. 2005 street tree inventory completed less than 300 ash trees
  4. 4. 2007 park landscape tree inventory competed less than 200 ash trees
  5. 5. Natural Areas Study of City Parks completed in 2010 981 acres of woodlands ‘ 53 tree species 414 trees per acre 372,873 trees
  6. 6. Native tree species Green and White ash (15.2%) Red Oak group (12%) Black cherry (9 %) sugar maple (8.6%)
  7. 7. Non-native invasive trees Norway maple (17.6%) Tree-of-heaven (5.9%)
  8. 8. Pittsburgh woodlands are 6270 acres almost 10 square miles
  9. 9. Public land (NAS) 388,125 Ash Trees
  10. 10. Red Oak Group 310,500 trees
  11. 11. Ash and oaks = 698,625 x 2500 gallons storm water mitigation per tree = 1,746,562,500 1.75billion gallons
  12. 12. Combined Sewer
  13. 13. Landslide
  14. 14. Hemlock wooly adelgid
  15. 15. Gypsy moth
  16. 16. Beech Bark Disease This a complex involving an invasive, soft scale insect and fungus.
  17. 17. Asian Longhorn Beetle
  18. 18. STREET TREES Norway maple callery pear London planetree sugar maple silver maple other 16% 11% 9% 4% 3% 23% red maple littleleaf linden honeylocust pin oak sweetgum 11% 11% 5% 4% 3%
  19. 19. PARK TREES pin oak northern red oak crabapple ginkgo littleleaf linden Austrian pine 11% London planetree 6% Norway maple 4% 4% black locust 4% sugar maple 2% other 6% 5% 4% 3% 50%
  20. 20. COMPLETE URBAN FOREST black locust 13% Norway maple black cherry 11% white ash American elm 8% tree-of-heaven boxelder 5% sugar maple hackberry 2% white mulberry other 30% 12% 9% 5% 3% 2%
  21. 21. Natural area study 414 trees per acre (981 acres) (6270) Urban forest master plan 73 trees per acre (35,520 acres) 9% ash = 233,366 1.4% red oak = 36,301 (388,125) (310,500)
  22. 22. Ash and oaks = 698,625 (NAS) 1,746,562,500 1.75billion gallons Ash and oaks = 269,667 (UFMP) 674,167,500 million gallons
  23. 23. Historic, landscape or woodland specimen free of defects small groups of males and females diverse locations
  24. 24. Ash is a battle that we lose
  25. 25. Conserved 158 trees
  26. 26. No preemptive cutting of ash
  27. 27. This is a battle we can win
  28. 28. Park Trees Red oak group 12% 48,736 trees
  29. 29. Picnic beetle long distance vector root graft local transmission
  30. 30. Early detection and appropriate response
  31. 31. Frick Park prior to discovery of oak
  32. 32. City of Pittsburgh DPW PA Department of Conservation and Natural Resources Non profit partner Pittsburgh Parks Conservancy Volunteers Foundations and Corporations
  33. 33. Adaptive Management
  34. 34. State and Federal money is accessible when a plan is in place
  35. 35. tree planting as investment
  36. 36. Genetic Diversity
  37. 37.  Nurturing Nature. Planting Possibility.

×