Aznps April 2009
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Transcript of Aznps April 2009
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Project Name
Client Name
Rillito River Ecosystem Restoration
Carianne Funicelli and Lori Woods, RECON Environmental
Mike Fink, USACE, Los Angeles District
John Taylor, USACE, Los Angeles District
Andrew Wigg, Pima County Regional Flood Control District
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Project Sponsors:
Project Contractors and Subcontractors:
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PROJECT AUTHORIZATION & PURPOSE
• Continuing Authorities Program project, Section 1135 Environmental Protection and Restoration, Project Modifications for Improvement of the Environment
• Modifies existing soil cement / channel stabilization project on Rillito River to enrich wildlife habitat
• Cost Share: 75% USACE, 25% Local Sponsor (PCRFCD)
• Total cost approximately $4 million
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AREA 1
• 8 acres
• Complete Dec 2006
• 1,060 plants
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AREA 2: 4 acres, Installation complete April 2008
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AREA 3• 35 acres
• Re-design of drainage channels
• Installation Complete January 2008
• 7000+ plants
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• Concept plan developed by USACE and Pima County Regional Flood Control District.
• Detailed project design developed by RECON (Landscape Architect and Vegetation Ecologist).
• Design team had continuous involvement throughout the project and positive collaboration with sponsors and contractors.
PROJECT PROCESS
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Rillito River Park
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Keep the Good Stuff
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Get Rid of the Bad Stuff… buffelgrass, tamarisk, Sahara mustard, Russian thistle, African sumac, Mexican paloverde, giant reed, yellow starthistle, yellow bird of paradise, cocklebur, filaree, malva, Bermuda grass, London rocket, cheeseweed, horehound, tree tobacco…
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Creating an Appropriate Native Plant Palette
Characterization of ExistingVegetation
Onsite At desirable reference sites
Review Floristic Information Value to wildlife species Historical data
Container Plants and Seed Mix What is available
commercially? Pima County Native Plant
Nursery Incorporate flexibility in lists to
avoid delays Water usage
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Trees• Velvet Mesquite
• Screwbean mesquite
• Blue paloverde
• Foothills paloverde
• Desert willow
• Canyon hackberry
• Mexican elderberry
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Large Shrubs• Saltbush• Catclaw acacia• White-thorn acacia• Graythorn• Wolfberry• Desert hackberry• Desert honeysuckle• Hopbush• Desert cotton
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Grasses, Vines, other Small PerennialsAmbrosia deltoidea
Abutilon incanum
Acourtia wrightii
Bothriochloa barbinodis
Bouteloua curtipendula
Chloris crinita
Curcubita digitata
Datura wrightii
Dicliptera resupinata
Digitaria californica
Gossypium thurberi
Hymenoclea salsola
Maurandya antirrhinifloraPappophorum mucronulatumProboscidea althefoliaRuellia nudifloraSphaeralcea ambiguaSporobolus airoidesSporobolus cyptandrusSporobolus wrightii Trixis californicaVitis arizonica
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Irrigation & Stormwater HarvestingTemporary System
plant palette designed to be self-sustaining once established
Reclaimed water
Stormwater harvesting basins to capture onsite flow and direct water to plantings
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Irrigation versus water harvesting (7 months)
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Habitat Considerations
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Stump treatment to preserve habitat for reptiles and small
mammals
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STRUCTURE = SHELTER• Variety in types of
plants (vines, grasses, trees, shrubs)
• Mosaic of habitat types to meet needs of as many different species as possible
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FOOD RESOURCES =seeds, berries, nectar, insects...
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AMPHIBIAN CONSERVATIONAMPHIBIAN CONSERVATIONImportant breeding area for 3
species of amphibians:– Couch’s spadefoot– Mexican spadefoot– Great Plains toad
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AVOID IMPACTS
Preserve islands of habitat and use construction fencing to avoid compaction
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Amphibian Salvage and Translocation
• Summer 2006• Over 600
adults moved• Eggs
collected and tadpoles raised for later release
• 4 species
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Kino Ecological Restoration Project
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Identification and Inventory Prior to Release
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Baseline Mosquito Monitoring
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Channel Design
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Terraces
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Plant Installation & Layout
• Natural-looking patterns
• Individual basins at each plant
• Protection from critters
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SEED MIX
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HYDROSEEDING
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Protection
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5-Year Monitoring Plan
• Qualitative AND Quantitative
• Monitoring Schedule
• Repeat Photos
• Transects
• Success Parameters
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Ongoing Maintenance and Monitoring
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Invasive Species Management
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A Couple of Surprises
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Irrigation Function & Plant Replacement
TOO MUCH NOT ENOUGH
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Thirsty Critters
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From straight concrete channels…
Photos this slide courtesy of Andrew Wigg, Pima County Regional Flood Control District
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To a Moonscape…
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To Moonscape with Dormant Plants…
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To Mustard Fields…..
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On the Way to Valuable Wildlife Habitat...
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4 February 2008 16 December 2008
On the Ground...
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From the air…2006 2008
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QUESTIONS?