We need your help measuring urban trees.

Our current research effort is Resilient Trees 3.0, and we need your help to measure 10 unique tree species by June 2017.

Operation Resilient Trees collects data on tree health, trunk and canopy size, GPS coordinates, and % permeable surface for 10 tree species that have widespread planting implications for our region:

  • Canary Island Pine (Pinus canariensis)
  • American Sweetgum (Liquidambar styraciflua)
  • Honey Locust (Gleditsia triacanthos)*
  • Brazilian Pepper Tree (Schinus terebinthifolia)
  • Red Ironbark (Eucalyptus sideroxylon)
  • Broad-leaved Paperbark (Melaleuca quinquenervia)
  • Kurrajong (Brachychiton populneus)
  • Chinese Banyan (Ficus microcarpa)*
  • Chinese Elm (Ulmus parvifolia)
  • Camphor Tree (Cinnammum camphora)

Join us in conducting valuable scientific research on urban trees in your community by joining a collection event.  Visit our Events Page to register.

Looking for more involvement?

Consider becoming a Certified Citizen Scientist which will qualify you to take tree measurements independently.

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  • Sun
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  • Sat
    9:30am - 12:30pmFairmount Park, 2601 Fairmount Blvd., Riverside CA 92501


    #loveriverside2016 is coming up on National Make a Difference Day. Saturday, October 22 come show us you love Riverside by giving back to your local urban forest.

    RSVP here: http://loveourcitiesprojects.com/projects/riverside/92501-operation-resilient-trees-fairmont-park

  • Thu
    1:00 pmTree People Conference Center, 12601 Mulholland Dr., Beverly Hills, CA 90210


    Earthwatch Institute invites you to join us in celebrating 2016 Southern California Teacher and Student Fellows!

    Teachers and student fellows will share their first hand experiences studying caterpillars, climate change, coral reefs, and much more on expeditions ranging from the Cayman Islands to the Arctic.

    We look forward to seeing you there!


  • Thu
    2:30 - 4:30pm PSTBill Botts Field, Duquesne Avenue, Culver City, CA 90232

    Have an Android phone?  Want to help take measurements with the pros and see the hybrid method (video link here) in action?  Join this collection event with Earthwatch staff to measure park and street trees using iNaturalist. Volunteers and Certified Citizen Scientists welcome, but be ready to move fast for this highly mobile event.  RSVP via EventBrite by Tuesday, November 15th to secure your spot.

Search Earthwatch Urban Resiliency Program