Active Marsh Improvement - UF/IFAS OCI |...
Transcript of Active Marsh Improvement - UF/IFAS OCI |...
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Active Marsh Improvement:A decade of rehabilitating cattail
impacted areasMichael Manna1, Sue Newman1, Scot Hagerthey*, Mark Cook1, LeRoy Rodgers2, and David Black2
1 Applied Sciences Bureau, SFWMD
2 Land Resources Bureau, SFWMD
* Current: National Center for Environmental Assessment, EPA
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Enhancements and expansion of STAs, BMPs integration with CERP, Also-
The Long Term Plan for Achieving Water Quality Goals- 2003
Cattail (90+%)Cattail mix (50+%)Mix cattail (10+%)Other (<10%)
LEGEND (1995)
N
10 km
Transect Sites inWCA-2A
F0
F3
U3
F1
F2
F5
E0
E1E2
E3
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E5
U1U2
F4• Natural recovery of the Everglades has been deemed “too lengthy”; thereby, accelerated recovery must be investigated.
• “At the present time there are no specific management activities that have been demonstrated to accelerate recovery at a large scale. In addition, there are some concerns that active management in impacted areas may exacerbate phosphorus movement, particularly if not carefully investigated prior to implementation.”
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1. Cattail Habitat Improvement Project (CHIP)2. Landscape Pattern Restoration (AMI-1)3. Slough Restoration (AMI-2)
Active Marsh Improvement Projects
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Cattail Habitat Improvement Project (CHIP)
ENRICHED
TRANSITION
REFERENCE
• Rehabilitate cattail areas?• Multiple tropic level sampling• Method – herbicide and
prescribed fire• Control and Reference
comparisons
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5
March 2006 @ TO1 - Firebreaks
July 2006 @ TO1 - Fire
CHIP plot creationJune 2006 @ TO2 – Aerial spray
October 2008 @ TO1 – SAV marsh
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CHIP Experimental and Reference plot above-ground live biomass (g/m2) for 2007-2009
2007 2008 2009
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April 2012
September 2015
TO1 May 2014
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AMI W in 2013 AMI E in 2013
Landscape Pattern Restoration (AMI-1)
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initial 12 mon 24 mon
Perc
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100Dead vegetation SAV Live emergent vegetation Openwater
West
initial 12 mon 24 mon0
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Vegetation type cover change in Landscape Restoration plots with 12 and 24 month applications. α= 0.05.
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Slough restoration (AMI2)
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Slough restoration (AMI2)
Time since spraying (months)
10 12 14 16 18 20 22 24 26
Pro
porti
onal
cha
nge
in p
erce
nt c
over
Ty
pha
from
initi
al (%
)
-100
-50
0
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control24 oz. acre-1
32 oz. acre-1
24< 0, p=0.0624>32,p=0.0132< 0, p=0.01
24< 0, ns24>32,p=0.0232< 0, p<0.01
24< 0, ns24>32,ns32< 0, p=0.02
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12 monthsInitial 24 months
32 oz. acre-1
24 oz. acre-1
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In Conclusion
• Control cattail/ Desirable vegetation
• Glyphosate and fire best for eliminating all vegetation
• Imazamox is good for keeping patterning
• 32 oz dose is the most effective balance
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Acknowledgements
Staff and Contractors over the years:Everglades - J. Beerens, B. Bellinger, R. Bennett, M. Blaha, E. Cline, L. Cooke, J. Fay, S. Hohner, P. Holowecky, M. Jacoby, M. Kobza, M. Nungesser, F. Santamaria, K. Seitz, R. Shuford, J. Zimmerman, and C. Zweig
Veg. Management- S. Smith, P. Ellis
SFWMD, Aircoastal and Helicopter Applicators Inc., for aerial support
Florida Fish and Wildlife ConservationCommission – Prescribed fire