This document provides information on various invasive species affecting the Finger Lakes region, including hydrilla, Japanese knotweed, water chestnut, giant hogweed, and slender falsebrome. It discusses control and removal efforts underway, partnerships involved, and costs associated with managing both new and established invasive species infestations. Photos and links are provided for additional information on identification and impacts of the species mentioned.

1. Mosher@hws.edu

2. Source: Virginia Department of Conservation and Recreation

5. non-native
economic
environmental human health

6. Photo credit: http://stopthebeetle.info/

7. Think about
pathways of
invasion…

8. What is a PRISM?

9. Importance of
Collaborative Approach
Hemorrhaging cost of invasive species control
The lifeblood of the Finger Lakes region
Personal cost
Synergy
Hydrilla clogging a boat motor, photo credit: MI Sea Grant
Emergent stems and leaves of Hydrilla. Photo: David J.
Moorhead, University of Georgie, Bugwood.org
A thicket of Japanese knotweed. Citation: Tom Heutte, USDA
Forest Service, www.invasives.org
Water chestnut pull in
the Genesee River

10. Photo credit: LeRoy Rodgers, South FloridaWater Management District
Ideal Time
for
Intervention

11. http://www.globalpost.com/
dispatches/news/science/in
vaders-among-us-rogues-
gallery-invasive-species-
and-what-they-mean-you

12. Credit: http://www.ushistory.org/franklin/quotable/quote67.htm

14. Partners:
TNC
FLNF
GLT
NYS DEC
Montezuma Wildlife
Refuge
Cornell Plantations
Tanglewood Nature
Center
The College at
Brockport
Five signs-
1.6M
Impressio
ns

15. Photo credit:
http://www.weedcenter.org/textbook/6_prat
her_risk.html#introduction

16. Photo credit: http://www.hungrypests.com/how-they-spread/

17. Photo credit:Oregon.gov WIAISLawprohibitsthetransport
ofwaterandlivefish
Signeducatingpublicaboutproper
disposalofbait
Rusty crayfish Watch Card. Rusty crayfish are thought to be in NYS via
bait bucket introduction

19. Project Cost To Date:
Benthic mats and survey: $19,000
Grass carp and delivery:$315
Permit cost: $200 (expected)
Workshop: 30 participants, $350 in in-
kind training
TOTAL COST: 19,865

21. http://en.wikipedia.org/wiki/Hydrilla

22. Photo credit:CCE OnondagaCounty

26. Water Chestnut

27. New Infestations and Project
cost:
Genesee River – hand-harvest=
$1820.32/day volunteer labor
and boats
Cayuga North- mechanical
harvest $1500/day for harvester
rental
Little Sodus Bay- mechanical
harvest $1500/day for harvester
rental
TOTAL
COST:
$4,820.32

28. Managed Infestations and Project
Cost:
Braddock Bay- hand-harvest- 7
days, avg 10 volunteers/day *
$23.07/hr volunteer rate + boats =
$8579.60
TOTAL
COST:
$8579.60

29. Photo of giant hogweed burn - 5 days to 7 days initial exposure Photo credit:
Bob Kleinberg

31. 722 sites with GH in
2015,
297 sites had no
recurrence,
125 sites considered
eradicated!!
74% of FL sites have 0-
100 plants
79 sites have 1000+
plants

32. • New infestation found September
9, 2015
• Tour of infestation by Ontario
County SWCD, CCE Ontario County,
NYS Dept Ag and Markets, and FL-
PRISM
• Infestation size is NOT KNOWN
• Survey work will need to be
undertaken to determine size and
distribution

36. iMapInvasives.org

38. Japanese knotweed growing
through asphalt

41. An algae that forms thick, dense
mats on lake bottoms
http://sand-lake.org/invasives/starry-stonewort/

43. Foliar symptoms of oak wilt in red oak.
Fred Baker, Utah State University, Bugwood.orgDying Oak Wilt Infested Trees
William M. Ciesla, Forest Health Management International, Bugwood.org

44. Spotted Lantern Fly, Lycorma delicatula, adult. [Photos: Holly Raguza, Bugwood.org] Lantern fly egg mass. [Photo: Holly Raguza, Bugwood.org]

47. Photos courtesy of: Britt Slattery, USFWS

51. Credit: John M. Randall, The Nature Conservancy, Bugwood.org

53. Japanese stiltgrass in a wooded understory. Chris Evans, River to River CWMA, Bugwood.org
Rebekah D. Wallace, University of Georgia, Bugwood.org
Access road and clearing invaded with Japanese Stiltgrass John
M. Randall, The Nature Conservancy, Bugwood.org

54. Slender Falsebrome (Brachypodium sylvaticum)
Ankle to shin-high clumps of
flat, arching leaf blades 1/4
to 1/3 inch wide that are
bright green into the fall.
Fine hairs along the stem
and the edge of the leaf
Long, drooping, flower spikelets
with short or no stalk on stems
far above the leaves. Each
flower has a long awn.
Report slender falsebrome in the FL-
PRISM:
Hilary Mosher
315.781.4385
mosher@hws.edu
http://nyimapinvasives.org
Prevention Control
Because seeds
can be carried
by shoes and
vehicles, it is
important to
clean off any
debris before
leaving areas
infested with
slender
falsebrome.
Small patches of slender
falsebrome can be dug up in
April and early May. Mowing
in June will prevent the
plant from resprouting the
next year. For larger
infestations, non-selective
or grass-specific herbicide
should be used. Intensive
grazing is also an efficient
suppression method.
Where
Slender falsebrome
dominates forest
understories and
open grasslands.
This invader can be
found year round
but flowers from
early July into
August. Mature
spikelets can be
seen through
October.
This New Invasive is a SERIOUS Threat!
Photocredit:WAStateNoxiousWeedControl
Board

55. Photo credits: Katie Lovering
QUESTIONS?