a new design mimicking
TRANSCRIPT
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A New Design Mimicking
Nature’s Old Techniques
By
Heidi Kloeppel
Fred Phillips and Ann Hadley
Fred Phillips Consulting, LLC
9730 North Rosewood Drive
Flagstaff, AZ 86004
928-773-1530
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Altered Ecosystem
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Yuma East Wetlands (YEW)
Restoration • Proposed 1,400
acres restoration
• 180 acres at
different phases
of restoration
• 30 acres
proposed
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Success! But more to Learn
• Restoration relatively
new for the LCR
• Non-native plant re-
colonization
• Little information on
density and structure for
best growth and
hindrance of non-native
weeds
• Limit irrigation needs
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Questions
1. What planting density and bioengineering technique is most beneficial for bulrush and willow short- and long-term growth?
2. Does having a structurally diverse planting regime deter non-native re-colonization?
3. Can we grow native trees with out using irrigation infrastructure?
4. What native seeds grow in the YEW?
5. Do harvested seeds establish the same as purchased seeds?
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Questions
1. What planting density and bioengineering technique is most beneficial for bulrush and willow short- and long-term growth?
2. Does having a structurally diverse planting regime deter non-native re-colonization?
3. Can we grow native trees with out using irrigation infrastructure?
4. What native seeds grow in the YEW?
5. Do harvested seeds establish the same as purchased seeds?
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South Channel
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Sample Design
• 6 Treatments x 2=
12 transects
• 15 m transects
• Randomly paired
• Located on north
side of channel
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South Channel Treatments Along Water's
Edge Slope Top of Slope
S.
californicus
S.
americanus
S.
exigua
Pole
S.
exigua
Bundle
S. exigua
Pole +
Bundle
Alternating
Seed
Dispersed
among
S. exigua
S.
goodingii
Seeding
under
S. gooddingii
25 ft of 5'
O.C.
25 ft of 5'
O.C. 2.5' O.C. 10' O.C.
Anemopsis
californica
10' O.C. 5' O.C.
Heliotropium
curassavicum 10' O.C.
Distichilis
spicata
5' O.C. 2.5' O.C.
Sesuvium
verrucosum 5' O.C.
Sporobolus
airoides
25 ft of 5'
O.C.
25 ft of 5'
O.C. 5' O.C. 10' O.C
5' O.C.
2.5'
O.C.
Sesuvium
verrucosum 5' O.C.
10' O.C 5' O.C.
Heliotropium
curassavicum 5' O.C.
Distichilis
spicata
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Planting
Bulrush Plugs
Willow Poles
Willow Bundles
Willow Cuttings
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Monitoring
• Every month from
April-October
• Tree height, cover,
condition, factors
affecting growth
• Estimate cover using
Daubenmire scale
• Photo monitoring
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 m
2 m
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Preliminary Results • Growth occuring
and shorebirds have returned
• Growth over time between treatments
• Percent composition of native verses non-native vegetation between treatments
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Questions
1. What planting density and bioengineering technique is most beneficial for bulrush and willow short- and long-term growth?
2. Does having a structurally diverse planting regime deter non-native re-colonization?
3. Can we grow native trees with out using irrigation infrastructure?
4. What native seeds grow in the YEW?
5. Do harvested seeds establish the same as purchased seeds?
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Seed Plots
• 8 randomly selected
plots
• 6-20 subplots with
different species
• Estimate cover in
each subplot
• Photo monitoring
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Inland Saltgrass*
(Distichlis spicata)
Yerba Mansa (Anemopsis californica)
Wolfberry (Lycium andersonii) Olney Threesquare
(Schoenoplectus americanus)
Pickleweed
(Salicornia virginica)
Seep willow *
(Baccharis salicifolia)
Salt Heliotrope*
(Heliotropium curassavicum)
Western Sea-Purslane*
(Sesuvium verrucosum)
Alkali Sacaton*
(Sporabolus airoides)
4-wing Saltbush
(Atriplex canescens)
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Alkali
Sacaton
Western
Sea-
Purslane
Yerba
Mansa
Pickleweed Inland
Saltgrass
Salt
Heliotrope
Seep willow 4-wing
Saltbush
Wolfberry Pickleweed
Control
16
m
60 m
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Preliminary Results
• Seeds have sprouted
• Growth success over time
• Native verses non-native plant establishment
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Applications and Future Endeavors
• Replicate on North Channel and other areas
• Use data for future restoration efforts on LCR
• Correlate with wildlife recovery
• Continue with native seed plan and collection program
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Contributors:
City of Yuma
Yuma Crossing National Heritage Area
Quechan Indian Tribe
Yuma County
Bureau of Reclamation
Army Corps of Engineers
Arizona State Land Department
Bureau of Indian Affairs
Audubon Society
Arizona Water Protection Fund
National Fish and Wildlife Foundation
North American Wetland Conservation Association
Arizona Game and Fish
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During Excavation
After Excavation
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