monitoring the impact of herbicide application on invasive and native plants in a new jersey coastal...
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Monitoring the Impact of Herbicide Application on Invasive and Native Plants
in a New Jersey Coastal Dune System
Emily Parker and Louise Wootton, Ph.D.
Georgian Court University, Lakewood NJ
Introduction of Carex kobomugi• Came in to NJ around
1900
• Shipwreck released barrels of Oriental Porcelain packed in Carex kobomugi?
• Introduced with ballast?
Spread of Carex kobomugi
• Deliberate Planting
– Dune stability
– Trampling resistance
– Disease and fungal resistance
– Traffic deterrent
• Natural Propagation
Spraying of IBSP Beds
• Targeted application of Roundup®
• Narrow nozzle
• Intentions:
– Remove Carex
– Spare remaining plants
Methods
•Mapping of bed area
•GPS polygons
•Diversity Sampling
•Systematic sampling design
•Count numbers and types of species in 1m2 plots
•1-5% of stand area
Results for Carex kobomugiBed A-14
2002 2003 2004
Ca
rex a
ve
rag
e g
row
th
0
10
20
30
40 Inside
Bed A-23
2002 2003 2004
Ca
rex a
ve
rag
e g
row
th
0
10
20
30
40
50Inside
Bed Maintaince 1
2002 2003 2004
Ca
rex a
ve
rag
e g
row
th
0
50
100
150
200 Inside
Bed Maintaince 2
2003 2004
Ca
rex a
ve
rag
e g
row
th
0
5
10
15
20
25
30 Inside
Results for American Beach Grass
Bed A-14
2002 2003 2004
Am
mo
ph
ila
ave
rag
e g
row
th
0
10
20
30
40 InsideOutside
Bed A-23
Am
mo
ph
ila
ave
rag
e g
row
th
0
10
20
30
40
50
2002 2003 2004
OutsideInside
Bed Maintaince 1
Am
mo
ph
ila
ave
rag
e g
row
th
0
10
20
30
40
2002 2003 2004
OutsideInside
Bed Maintaince 2
Am
mo
ph
ila
ave
rag
e g
row
th
0
10
20
30
40
50
60
2003 2004
OutsideInside
Results for Golden RodBed A-14
2002 2003 2004Go
lde
n R
od
ave
rag
e g
row
th
0
1
2
3
4
5
6InsideOutside
Bed A-23
2002 2003 2004Go
lde
n R
od
ave
rag
e g
row
th
0
2
4
6
8
10
12InsideOutside
Bed Maintaince 1
2002 2003 2004Go
lde
n R
od
ave
rag
e g
row
th
0
5
10
15
20InsideOutside
Bed Maintaince 2
2003 2004Go
lde
n R
od
ave
rag
e g
row
th
0
5
10
15
20
25
30InsideOutside
Results for Seaside SpurgeBed A-14
Se
asid
e S
pu
rge
ave
rag
e g
row
th
0.0
0.5
1.0
1.5
2.0
2.5
3.0
2002 2003 2004
OutsideInside
Bed A-23
2002 2003 2004Se
asid
e S
pu
rge
ave
rag
e g
row
th
0.0
0.2
0.4
0.6
0.8
1.0 InsideOutside
Bed Maintaince 1
2002 2003 2004Se
asid
e S
pu
rge
ave
rag
e g
row
th
0
2
4
6
8 InsideOutside
Bed Maintaince 2
2003 2004Se
asid
e S
pu
rge
ave
rag
e g
row
th
0.0
0.5
1.0
1.5
2.0 InsideOutside
Results for Sea RocketBed A-14
2002 2003 2004
Se
a R
ocket
ave
rage
gro
wth
0.0
0.5
1.0
1.5
2.0
2.5
3.0 InsideOutside
Bed A-23
2002 2003 2004
Se
a R
ocke
t a
ve
rag
e g
row
th
0.0
0.2
0.4
0.6
0.8
1.0 InsideOutside
Bed Maintaince 1
Se
a R
ocke
t a
ve
rag
e g
row
th
0
2
4
6
8
2002 2003 2004
OutsideInside
Bed Maintaince 2
2003 2004
Se
a R
ocke
t a
ve
rag
e g
row
th
0
5
10
15
20 InsideOutside
Conclusions• Summarize your findings here in words
• Effect on Carex immediately after spraying?
• Effect on Carex in following years?
• Effect on native species immediately after spraying?
• Effect on native species in following years
• This may take more than one slide
• Use point form. No whole sentences.
Conclusions
• Spray program currently suspended due to cut backs at NJ EPA
• Implications for future management if spray program is not restarted?
AcknowledgementsJim Burkitt
Katy Bevaart
Kathleen Brown
Audrey McGough
Sharon Myatt
Jason Ondreicka
Purvi Patel
Sheetal Patel
Courtney Rella
Anna Shipman
Crystal Van Wagner
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