Transcript Strengthening our Community Tree Canopy Through Education Module #11: Mangrove and Sea Grape Pruning Laura Sanagorski, Environmental Horticulture Extension Faculty Bill DuMond, Palm Beach County.

Strengthening our Community Tree
Canopy Through Education
Module #11:
Mangrove and Sea Grape Pruning
Laura Sanagorski, Environmental Horticulture Extension Faculty
Bill DuMond, Palm Beach County Extension Service Program Assistant
Strengthening Our Community Tree Canopy
2012 Urban Forestry Series
This series is a part of a project titled
“Strengthening Our Community Tree Canopy
Through Education”.
This project is made possible by a grant through
the 2011 National Urban and Community
Forestry Grant Program and the Florida
Department of Agriculture and Consumer
Services, and the Florida Forest Service.
Mangrove Pruning
Mangrove and Sea Grape Pruning
Why so Important?
Mangroves serve as a habitat for various
species of wildlife
Photo: Palm Beach County
Environmental Resource Management
Mangrove and Sea Grape Pruning
Why so Important?
Mangroves stabilize shorelines and
provide protection from storms
Photo: Palm Beach County
Environmental Resource Management
Mangrove and Sea Grape Pruning
Why so Important?
Mangroves protect water quality
Photo: Florida Department of
Environmental Protection
Mangrove and Sea Grape Pruning
Why so Important?
Mangroves serve as a food web support for
fish
Illustration: ProtectFlReefs
Mangrove and Sea Grape Pruning
Why so Important?
Because it’s the law!!
1996 Mangrove Preservation and
Trimming Act
Photo: University of Georgia, Bugwood.org
Red Mangrove
Photo: Florida Department of
Environmental Protection
Photo: Florida Department of
Environmental Protection
Red Mangrove
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Named for color inside bark of the tree
Usually found in tidal areas
Seeds are pencil-shaped “propagules” growing to ten inches
long
Known for their “prop” roots
Very sensitive to trimming, especially topping
Photo: Florida Department of
Environmental Protection
Photo: Palm Beach County
Environmental Resource Management
Black Mangrove
Photo: Florida Department of
Environmental Protection
Photo: Palm Beach County
Environmental Resource Management
Black Mangrove
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Named for the dark bark of the tree
Leaves are often encrusted in salt
Conditioned for saline and basin-like areas
Seeds are smaller than red mangrove
Known for upward growing “pencil” roots
Sensitive to trimming
Photo: Palm Beach County
Environmental Resource Management
Photo: Palm Beach County
Environmental Resource Mgmt.
White Mangrove
Photo: Florida Department of
Environmental Protection
White Mangrove
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Named for the whitish color of the bark
Leaves have sugar secreting glands at
the base
No aerial root system like the other
mangroves
Generally located in higher elevations
Tolerates trimming better than the other
mangroves
Photo: Palm Beach County
Environmental Resource Management
Mangrove Forest
Illustration: UF / IFAS
1996 Mangrove Preservation and
Trimming Act
Intent
Protect and preserve mangrove resources
• No trimming or alteration on
uninhabited islands or conservation and
mitigation areas
• Provide owners right of view
• Encourage owners to maintain mangroves
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1996 Mangrove Preservation and
Trimming Act
Photo: Palm Beach Post
Exemptions
Mangrove
Trimming
General
permit
Individual
Permit
1996 Mangrove Preservation and
Trimming Act
Exemptions
Riparian
Mangrove Fringe
(RMF) – Areas
where mangroves
along the
shoreline </= 50
feet
Illustration: Bill DuMond – PBC Cooperative Ext.
1996 Mangrove Preservation and
Trimming Act
Exemptions
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Mangroves may be trimmed when </= 10
feet
Mangrove trimmed to overall height >/=
6 feet
Property shoreline </= 150 feet - 65% may
be trimmed
Mangroves < 10 feet being maintained or
reestablished via trimming
1996 Mangrove Preservation and
Trimming Act
Exemptions
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Mangroves may be trimmed when </= 24
feet
Trees > 16 feet trimmed in stages </= 25%
of foliage removed annually
Mangroves 10-24 feet being maintained or
reestablished via trimming
Trimming of red mangroves for 1st time by
Professional Mangrove Trimmer (PMT)
must notify authorities
1996 Mangrove Preservation and
Trimming Act
General Permit is required:
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Trimming done in area where Department of
Environmental Protection (DEP) hasn’t
delegated authority
Trimming conducted or supervised by PMT
Mangroves extend </= 500 feet
</= 65% of mangroves > 6 feet trimmed
Trimming of mangroves to provide clearance
for watercraft navigation
No herbicides or chemicals used
1996 Mangrove Preservation and
Trimming Act
General Permit
Permit used once to trim to achieve
height >/= 6 feet
• Trimming done in stages so </= 25% of
foliage removed annually
• $250.00 permit fee
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1996 Mangrove Preservation and
Trimming Act
Individual Permit is required:
Trimming or alterations not under an
exemption or a General Permit
• Trimming > 500 feet from the shoreline
• Where mitigation may be required
• Permit fee required:
1-19 trees - $420.00
20 + trees - $830.00
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Professional Mangrove Trimmers
Photo: Florida Department of
Environmental Protection
Photo: Florida Department of
Environmental Protection
Professional Mangrove Trimmers
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International Society of Arboriculture
Certified Arborists
Certified Wetland Scientists
Environmental Professionals
Landscape Architects
Professional Mangrove Trimmer
Sea Grape Pruning
Mangrove and Sea Grape Pruning
Why so Important?
Sea grapes serve as a habitat for birds,
lizards, gopher tortoise, butterflies, and
other wildlife
Photo: USDI National Park Service,
Bugwood.org
Mangrove and Sea Grape Pruning
Why so Important?
Sea grapes serve as a food source for
native birds, mammals, and other wildlife
Photo: Starr Environmental, Bugwood.org
Mangrove and Sea Grape Pruning
Why so Important?
Sea grapes serve as a stabilizer for beaches
and dunes
Photo: University of Georgia, Bugwood.org
Photo: USDI National Park Service, Bugwood.org
Mangrove and Sea Grape Pruning
Why so Important?
Sea grapes protect oceanfront
property from erosion, sand,
and salt spray
Photo: Starr Environmental, Bugwood.org
Mangrove and Sea Grape Pruning
Why so Important?
Sea grapes serve as a protector to nesting
sea turtles
Photo: University of Georgia, Bugwood.org
Photo: University of Georgia, Bugwood.org
Mangrove and Sea Grape Pruning
Why so Important?
Sea grapes serve as a barrier to artificial
lighting
Photo: Florida Department of
Environmental Protection
Mangrove and Sea Grape Pruning
Why so Important?
Sea grapes serve as a barrier to artificial
lighting
Photo: Florida Department of
Environmental Protection
Mangrove and Sea Grape Pruning
Why so Important?
Sea grapes serve as a barrier to artificial
lighting
Photo: Florida Department of
Environmental Protection
Mangrove and Sea Grape Pruning
Why so Important?
Because it’s the law!!
- Florida Statutes – 161.053(2)(a)
- Florida Department of Environmental Protection
- Federal Endangered Species Act 1973
- Florida Statutes Chapter 370.12 – Marine Turtle
Protection Act
Photo: Northeastern University, Bugwood.org
Mangrove and Sea Grape Pruning
Why so Important?
Department of Environmental Protection
Sea Grape Pruning Guidelines
• Do not trim more than 1/3 of height
• Do not trim more than 1/3 of leaf area annually
• Do not reduce height less than 6 feet
• All sea grape seaward of the CCCL subject to
permitting
• Shrub trimming > 42 inches requires permit
• Tree trimming < 6 feet requires permit
Strengthening our Community Tree
Canopy Through Education
Module #11:
Mangrove and Sea Grape Pruning
Laura Sanagorski, Environmental Horticulture Extension Faculty
Bill DuMond, Palm Beach County Extension Service Program Assistant