Upload
hrnerr
View
26
Download
2
Tags:
Embed Size (px)
DESCRIPTION
Presentation given at the 4th Fact Finding Meeting for Piermont Marsh, NY
Citation preview
Restoration of Phragmites Dominated Marshes Along the Delaware Estuary
Presented by: Gary Bickle, Sr. Vice PresidentAKRF, Environmental and Planning Consultants
Note: The presentation provided herein is provided for informational purposes only. Any use or replication of the images, information, or data provided herein without the express written consent of the author is prohibited.
EEP Sites
NEW JERSEY:
5 Wetland Restoration Sites
1 Preservation Site
4 Fish Ladders
DELAWARE:
2 PSEG Wetland Restoration Sites
3 DNREC Wetland Restoration Sites
10 Fish Ladders
Phragmites
Executive Order 13112 identifies Phragmites as an invasive species
In the last several decades, there has been a rapid expansion of its distribution and coverage within tidal wetlands along the coastline of the Northeastern and Mid-Atlantic states
Ecological Effects of Phragmites
Reduces or eliminates access to marsh areas for forage fish and invertebrates
Reduces the amount of food available through the detrital pathway
Reduces the diversity of the aquatic ecosystem Lowers the habitat value for birds and wildlife Interferes with nutrient cycling processes, binding
limiting nutrients in forms unavailable to other plants
1951 Phragmites Coverage
Figure 11
1951 Phragmites Coverage
1962 Phragmites Coverage
Figure 12
1962 Phragmites Coverage
1972 Phragmites Coverage
Figure 13
1972 Phragmites Coverage
Pre Treatment Conditions
Alloway Creek Watershed Restoration Site
Summary of Treatments Evaluated
Grading limited because of size of properties
Microtopography
Sulfur addition soil chemistry change
Mowing
Grazing
Various herbicide application methods
Regulatory Requirements for Treatment Alternatives
NJDEP Land Use Regulation Program Tidal Wetlands Aquatic Pesticide Waterfront Development
U.S. Army Corps of Engineers 404 Program U.S. Fish and Wildlife Service National Marine Fisheries U.S. Environmental Protection Agency
Local Site Plan Approval Soil Conservation District
Initial Aerial Application of Glyphosate-based Herbicide - 1996
Note: Aerial application of herbicide is not being considered for use at Piermont Marsh.
Ground Application of Herbicide
Burning Operations
Note: Prescribed fire is not being considered for use at Piermont Marsh.
Prescribed Burn Results
Note: Prescribed fire is not being considered for use at Piermont Marsh.
Test Area Program
Implemented in 1999 following initial 1996-1997 Phragmites control efforts
Objective to determine whether alternative treatments alone or in combination with herbicide application were more effective in control than continued herbicide application alone
Implemented to provide as many different combinations as possible
Vegetative response to treatments based on thorough statistical evaluation of field data and remote sensing data
Over 80 various combinations evaluated
Test Area Treatments
Single mowing
Multiple Mowing
Microtopographic Alterations
Herbicide Timing
Grazing
Combinations of the Above
Rigorous monitoring
Microtopography Modifications
Phragmites Mowing
Wicking Application
Grazing
Test Area Treatments
Test Area Treatments
Test Area Treatments
Test Area Conclusions
Phragmites coverage significantly reduced within areas receiving glyphosate-based herbicide treatment
Mechanical/biological treatments did not result in measurable reduction of Phragmites
No combination of treatments resulted in better control than herbicide alone
ACW TA-43 1999
ACW TA-43 2001
ACW TA-43 2003
Selected Herbicide Effects
1996 Vegetation Coverage Mapping
Figure 4Figure 7
1996 Vegetation Coverage Mapping
2003 Vegetation Coverage Mapping
Phragmites-dominated Restoration Sites
Phragmites-dominated Restoration Sites
Phragmites-dominated Restoration Sites
Restoration of Phragmites Dominated Marshes Along the Delaware EstuarySlide Number 2PhragmitesEcological Effects of Phragmites1951 Phragmites Coverage1962 Phragmites Coverage1972 Phragmites CoveragePre Treatment ConditionsAlloway Creek Watershed Restoration SiteSummary of Treatments EvaluatedRegulatory Requirements for Treatment Alternatives Initial Aerial Application of Glyphosate-based Herbicide - 1996Ground Application of HerbicideBurning OperationsPrescribed Burn ResultsTest Area ProgramTest Area TreatmentsMicrotopography ModificationsPhragmites MowingWicking Application GrazingTest Area TreatmentsTest Area TreatmentsTest Area TreatmentsTest Area ConclusionsSlide Number 26Slide Number 27Slide Number 28Selected Herbicide Effects1996 Vegetation Coverage Mapping2003 Vegetation Coverage MappingPhragmites-dominated Restoration SitesPhragmites-dominated Restoration SitesPhragmites-dominated Restoration Sites