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

Carex kobomugiAsiatic Sand Sedge

Native Range of Carex kobomugi

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

Range of Carex kobomugi in North America

Carex invasion of New Jersey’s Coastal Dunes

Dune With Carex

Spraying of IBSP Beds

• Targeted application of Roundup®

• Narrow nozzle

• Intentions:

– Remove Carex

– Spare remaining plants

Spraying of IBSP Beds

Research Questions

• State your research questions here!

IBSP

Study Site

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

I thought I saw the end!!!! I did I did!!!!

Thanks 4 Listening!!! Questions???