climate ready trees for albuquerque’s community forest...• urban compaction tolerance •...
TRANSCRIPT
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Climate Ready Trees for Albuquerque’s Community Forest
Photo: Roberto Rosales
Sarah Hurteau – The Nature ConservancyAndrew Lisignoli – Trees of Corrales
Marisa Thompson – NMSU Extension
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Albuquerque’s Context
• 200 sq miles• 1.5M trees
estimated• <10% Canopy
cover• Siberian Elm
most common• 60% below 6”• Severe heat
island
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Who was Invited?• Jennifer Dann, NM State Forestry• Joran Viers, Albuquerque City Forester• Andrew Lisignoli, Trees of Corrales• Carol Bada, NM State Forestry, Tree Nursery• Dr. Will Pockman, UNM• Dr. Marisa Thompson, NMSU Extension • Judith Phillips, Native Plant Society• Amos Arbor, ABCWUA• Hunter Ten Broeck, Waterwise Landscapes• Dr. George Koch, Northern Arizona University
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• Downscaled CMIP5 Climate and Hydrology Projections
• RCP8.5 data from Bias-Correction Spatial Disaggregation climate monthly models
• Data is averaged from 39 models for this area over Albuquerque.
In other words: We requested data from climate models across the globe that are utilized in the most recent IPCC report. The emissions scenario influencing the climate in these models is “business as usual.”
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Our Process
Photo: Roberto Rosales
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Criteria Scoring Soil type toleranceDrought ToleranceHeat Tolerance – Next 30 Years – El Paso 2060-2099 – Tucson Cold Tolerance – Next 30 Years – ABQ now 2060-2099 – El Paso now
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Criteria Scoring Extreme Temperature Tolerance (Next 30 Years) - All scored based on USDA Hardiness zones, unless species specific data is listed.
Tolerance of heat+1 = if Zone 8 is included or up to 105 degrees F,-1 = if Zone 7 or lower, or less than 105 degrees F
Tolerance of cold+1 = USDA hardiness zone 7 or lower (tolerant of ABQ now)-1 = USDA hardiness zone 8 or higher (not tolerant of ABQ now)
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Criteria Scoring Extreme Temperature Tolerance (2060-2099+)
Tolerance of heat+1 = if Zone 9 is included or up to 120 degrees F-1= if Zone 8 or lower or <120 degrees F
Tolerance of cold+1 = USDA hardiness zone 8 included (tolerant of El Paso now),-1 = USDA hardiness zone 9 and higher (not tolerant of Tucson now)
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Criteria Scoring Bonus Columns:• Flooding tolerance• Urban compaction tolerance• Alkaline Soil Tolerance• Well-drained soil requirement• Pests/disease susceptibility• Allergens/ Toxic parts• Management requirements (pruning, tree litter, etc.)• Branch attachment strength/ prone to breakage• Edible parts• Attractiveness (fragrance, blooms, color)• Supports wildlife
Photo: Roberto Rosales
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Next Steps• Finalize the Climate Ready Trees Report • Share lists with local partners• Outreach to municipal departments • Launch Awareness Campaign in March 2020• Continue to revisit criteria and let the process
evolve as we learn new information
Nature.org/abqPhoto: Roberto Rosales
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Supplying Climate Ready Trees
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How to approach lists?
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Yes, this list makes me nervousWhy?
Homeowners will refer to it to buy currently marginal trees
Landscape Architects will specify trees currently not in production
This is a preliminary draft; we need to find funding to take the next step and broaden the research parameters of existing studies and data
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Future Trees
Current Trials at Trees of Corrales
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Growing techniques for our current conditions
White Washing for High Light Intensity
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Ground Work Leading to Production
Steps needed before investment into full scale nursery production
ResearchQuestionsSelectionsTrialsMother Block DevelopmentMarketingProduce LinersGrow Trees for Market
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Celtis reticulata Net-Leaf HackberryTucson, AZ Southern Utah Eastern Oregon
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Celtis reticulata (Net-Leaf Hackberry)Physical Traits compiled by OSUHow do they compare to other regions?
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What are the positives and negatives?
Cons: Reseeds readilyQuestionable ornamental qualitiesSlow growth rate
Bare root transplant success unknown
Pros: Tolerates high light intensities, poor soil, high temperatures,flooding and drought tolerant
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Are there natural hybrids?
C. laevigata C. reticulata C. occidentalisSugarberry Netleaf Hackberry Common Hackberry
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Production questions to answer
Selection process of arboreal habit
Which root system for best transplant establishment, soil type, soil moisture and heat.
Best method to propagate
Trial in various regions
Develop Mother Block
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To date how far have we come with Nursery Grown Net-Leaf Hackberry
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Ulmus parvifloraChinese/Lacebark ElmCurrently in Full Nursery Production
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Ulmus pumilaSiberian ElmShould this tree make the list?
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My Hope for This List of Climate Ready Trees
- Motive Research leading to selections and production techniques
- Motive Growers and Propagators to start the production cycle
- To Start the Conversation – The Big Picture – OpportunitiesStewardship of what we have Teachable Moments
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Which road to take?
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Climate Ready Trees RECAP
One of the most important urban forest climate adaption strategies is the planting and stewardship of trees that are:
• Well-adapted to future conditions, as well as the present conditions!
• Well-suited to Site Growing Conditions
• Species Diverse• Planted & Mulched Properly!
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How to Adapt this Climate Ready Trees Model to Other Areas:1. Is there a city today with the climate that is predicted for my city in 50 (or 100) years?
2. Do my favorite urban trees thrive in that other city?
If not, be sure to ask why!?
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What did YOU learn at Think Trees this year?
What are you going to teach others?