The Ecosystem Response to Restoration: Birds in the ... · Avian Monitoring Program in the Colorado...
Transcript of The Ecosystem Response to Restoration: Birds in the ... · Avian Monitoring Program in the Colorado...
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Thank you for joining us!
Webinar Topic:
The Ecosystem Response to Restoration:
Birds in the Colorado River Delta
Presented By:
Osvel Hinojosa-Huerta – Director of
Pronatura Noroeste’s Northwest Water
Conservation Program
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The Ecosystem
Response to
Restoration: Birds in
the Colorado River
Delta
Osvel Hinojosa-Huerta
Pronatura Noroeste
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Our mission:
Conservation of the priority ecosystems of Northwestern Mexico, contributing to the development of society in harmony with nature.
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Colorado River Delta
1 million acres
Flow into the Gulf of California
River influence
extended 50 miles
into the sea
Extensive
estuarine area
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Fotografía: Francisco Zamora
Importance of the Colorado Delta
Biosphere Reserve
Ramsar Site
Priority Wetland inMexico & North America
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Avian Monitoring Program in the Colorado River Delta
• Evaluate trends in abundance and diversity:
measurement of ecosystem health
• Guide conservation and restoration initiatives
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Avian Monitoring Program in the Colorado River Delta
Floodplain of the Colorado River from Morelos Dam
to the estuarine area
Changes in abundance, diversity and composition of
the riparian avian community and marshbirds
Relation with hydrological (surface and groundwater)
and vegetation changes, as well as restoration
activities
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Riparian Monitoring
• 5 Minute, variable distance point-counts, 200 m
apart.
• Monitoring: 192 survey points (24 transects), 4
times per year (once per season) since Spring 2002
(surveys continue up to date)
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Riparian Surveys
192 survey points
Colorado River
Waterbird
Surveys
80 survey points
Hardy River and
Estuary
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Fotografía: Francisco Zamora
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Marshbird Surveys
• Standardized Protocol for Monitoring Marshbirds in North America
• BLRA, SORA, LEBI, VIRA, CLRA, AMBI
• Two times per year: March and May
• Since 2003
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Marshbird Surveys
220 survey pointsalong the Colorado River
160 survey pointsalong the Hardy River / Estuary
250 survey pointsin the Cienega de Santa Clara and El Doctor
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0 100 200 300 400 500 600 700 8008
10
12
14
16
18
Seccion tipo del Rio Colorado
Seccion (m)
Ele
vaci
on (
m)
Legend
WS PF 1
Ground
Bank Sta
.11 .085 .11
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Native biodiversity and human
communities in the Colorado River Delta
will be sustained by a landscape-scale
network of hydrologically functional,
adaptively managed conservation sites
and corridors, supported by public
policies and programs in both Mexico
and the U.S .
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Key strategies
• Research, planning, monitoring….repeat
• Outreach and community involvement
• Binational negotiations and public policy
• Water for the environment
• Protection of key sites
• Restoration
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• The river is over-
allocated
• We need new
strategies and tools
Implementation
Water Allocation
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Fresh Water Allocation
• Agricultural return
flows
• Acquisition of water
rights in the Mexicali
Valley
• Treated effluent of
wastewater plants
• Optimize tidal
interactions
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Las Arenitas
Wastewater
Treatment Plant
30% of the
effluent
guaranteed for
instream flows in
the Hardy River
(700 l/s or 22
Mm3 per year)
Duplicates the
flow in the river
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Fresh Water
Allocation:
• Voluntary, market-
based strategies
• Acquisition of water
rights in the Mexicali
Valley
• Water Trust for the
Restoration of the
Colorado River Delta
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Restauremos el
Colorado
Pronatura Noroeste,
Sonoran Institute,
TNC, National
Audubon Society
8,200 Acre-feet per
year of permanent
water rights
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Laguna Grande
Restoration Design
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Pino Salado, antes de la restauración
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Bosques Nativos, después de la restauración
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Binational negotiations for
the Colorado River Delta
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Minute 319 – Historic
agreement
5-year agreement
•Water conservation
•New water sources
•Shortage and drought
•Environmental component
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Environmental component
Allocation of water for the delta
158,000 acre-feet in 5 years
Contributions from US, Mexico
and NGO´s
Test delivery mechanisms
Evaluate the hydrological and ecological response
Information for the design of environmental flows in the future
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Pulse flow of Minute 319
Contribution of US and
Mexico: 105,000 acre-
feet – one major event
Mimic natural flow
regime
8 weeks, March 23 –
May 18 2014
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Base Flow
53,000 acre-feet,
provided by NGO’s
Smaller flows,
longer duration –
maintain restored
vegetation
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Photo credit: Francisco Zamora-Sonoran Institute/Lighthawk
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Photo credit: Francisco Zamora-Sonoran Institute/Lighthawk
May 13 2014 May 15 2014
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Mantenimiento de los sitios de restauración
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Mantenimiento y Monitoreo
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Flujo Base en el Río Colorado
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Habitat
Enhancement
500 acres - restored and
functional
Green-up of the
Floodplain
The pulse flow reverted a
13 year downward trend
of vegetation biomass
Increase in Vegetation
Index
43% in the flooded area
23% in the riparian zone
Southern
Internation
al Border
(SIB) San
Luis,
Sonora,
Mexico
Northern International Border (NIB)
Yuma, Arizona, USA ----------
Southern
Internation
al Border
(SIB) San
Luis,
Sonora,
Mexico
Northern International Border (NIB)
Yuma, Arizona, USA ----------
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Bird diversity (Hill’s) in the floodplain of the Colorado River
0
1
2
3
4
5
6
2010 2011 2012 2013 2014 2015 2016
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Abundance of migratory waterbirds (detections per point) in
the floodplain of the Colorado River
0
20
40
60
80
100
120
140
2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016
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Abundance of resident waterbirds (detections per point) in the
floodplain of the Colorado River
0
2
4
6
8
10
12
14
16
18
2010 2011 2012 2013 2014 2015 2016
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0
10
20
30
40
50
60
Abundance Richness Diversity
Riparian Corridor
Restoration Sites
Birds in restoration sites vs the riparian corridor
28% higher
33% higher
53% higher
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Abundance of 15 target species in restoration sites vs the
riparian corridor
0
1
2
3
4
5
6
7
2013 2014 2015
Floodplain
Restoration
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Birds in restoration sites vs the riparian corridor
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Conclusions
• Environmental flow releases triggered the green-
up of of the floodplain
• Better response at prepared sites and active
restoration sites
• Bird populations are responding positively to this
re-vegetation and the active restoration efforts in
the Colorado River in Mexico
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Progress
1,180 acres of restored riparian forests
Secured water rights for 8,200 acre-feet per year
Protection of 37,000 acres of marshes
Flows enhanced along 55 river miles
Planted over 350,000 native trees
In the past 7 years, more than 10,000 volunteers
have participated in the restoration efforts
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Restoration in the Colorado River Delta:
• Regional approach / science-based
• We have a regulatory framework, public policies and
the support from different stakeholders
• Binational cooperation
• Water allocation is feasible
• Protection is feasible
• Resilient ecosystem: restoration is possible
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www.pronatura-noroeste.orgwww.raisetheriver.org
Facebook:Pronatura NoroesteReforesta San LuisRaise the RiverSave the Colorado River Delta
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