active marsh improvement - uf/ifas oci |...
TRANSCRIPT
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
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
E4
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.”
1. Cattail Habitat Improvement Project (CHIP)2. Landscape Pattern Restoration (AMI-1)3. Slough Restoration (AMI-2)
Active Marsh Improvement Projects
Cattail Habitat Improvement Project (CHIP)
ENRICHED
TRANSITION
REFERENCE
• Rehabilitate cattail areas?• Multiple tropic level sampling• Method – herbicide and
prescribed fire• Control and Reference
comparisons
5
March 2006 @ TO1 - Firebreaks
July 2006 @ TO1 - Fire
CHIP plot creationJune 2006 @ TO2 – Aerial spray
October 2008 @ TO1 – SAV marsh
CHIP Experimental and Reference plot above-ground live biomass (g/m2) for 2007-2009
2007 2008 2009
0
200
400
600
800
1000
1200
Dry
Wei
ght (
g m
-2)
Tran
sitio
n
Enric
hed
Ref
eren
ce
Tran
sitio
n
Enric
hed
Ref
eren
ce
Tran
sitio
n
Enric
hed
Ref
eren
ce
April 2012
September 2015
TO1 May 2014
AMI W in 2013 AMI E in 2013
Landscape Pattern Restoration (AMI-1)
initial 12 mon 24 mon
Perc
ent c
over
(%
)
0
20
40
60
80
100Dead vegetation SAV Live emergent vegetation Openwater
West
initial 12 mon 24 mon0
20
40
60
80
East
b
c
a
b
a a
a
a
a
a
a
a
b
b
b
c
c
cb
b
a
a
b b
Vegetation type cover change in Landscape Restoration plots with 12 and 24 month applications. α= 0.05.
Slough restoration (AMI2)
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
50
100
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
12 monthsInitial 24 months
32 oz. acre-1
24 oz. acre-1
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
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