Invasive Species of Aquatic Plants and Wild Animals in Minnesota 2006 Annual Report published ...

141 Pages·2007·2.82 MB·English

by  Bernice Cramblit

Invasive Species of

Aquatic Plants and Wild
Animals in Minnesota

Annual

Report
2006

for the year

ending December 31

Minnesota

DEPARTMENT OF(cid:31)
NATURAL RESOURCES

Minnesota Department of Natural Resources

Invasive Species Program
500 Lafayette Road
St. Paul, Minnesota 55155-4025

contributing authors and editors*
Susan Balgie*
Jennifer Bury
Wendy Crowell*
Steve Enger
Gary Montz
Nick Proulx
Jay Rendall
Rich Rezanka
Luke Skinner
Ken Soring
Chip Welling
Heidi Wolf
David Wright

Submitted to
Environment and Natural Resources Committees
of the Minnesota House and Senate

This report should be cited as follows:
Invasive Species Program. 2007. Invasive Species of Aquatic Plants and Wild Animals in
Minnesota: Annual Report for 2006. Minnesota Department of Natural Resources, St. Paul,
MN.

Copyright 2007, State of Minnesota, Department of Natural Resources.

Preface

Each year, by January 15, the Department of Natural Resources (DNR) is required to
prepare a report for the Legislature that summarizes the status of management efforts
for invasive species (aquatic plants and wild animals) under its jurisdiction. Minnesota
Statutes, Chapter 84D.02, Subd. 6, specify the type of information this report must
include: expenditures, progress in, and the effectiveness of management activities
conducted in the state, including educational efforts and watercraft inspections,
information on the participation of others in control efforts, and an assessment of future
management needs. Additional sections have been added to this report to provide a
thorough account of DNR’s Invasive Species Program activities and other activities
related to invasive species of aquatic plants and wild animals.

Invasive Species in Minnesota Annual Report for 2006

Table of Contents
Page

List of Tables ................................................................................................................. iii

List of Figures ............................................................................................................... v

Summary ........................................................................................................................ 1

Introduction ................................................................................................................... 9

Expenditures ................................................................................................................. 13

Education and Public Awareness ............................................................................... 21

Enforcement .................................................................................................................. 31

Regulations and Proposed Changes .......................................................................... 35

Watercraft Inspections and Awareness Events ......................................................... 38

Risk Assessment and Risk Management.................................................................... 47

INVASIVE PLANTS

Management of Curly-leaf Pondweed ......................................................................... 51

Management of Eurasian Watermilfoil ........................................................................ 64

Management of Flowering Rush .................................................................................. 76

Management of Purple Loosestrife ............................................................................. 81

Other Invasive Aquatic Plant Species in Minnesota................................................... 91

Terrestrial Invasive Plant Management....................................................................... 92

INVASIVE ANIMALS

Management of Asian Carp........................................................................................... 99

Management of Common Carp..................................................................................... 107

Management of Mute Swans ........................................................................................ 111

Management of Zebra Mussels..................................................................................... 113
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Invasive Species in Minnesota Annual Report for 2006

Table of Contents (Continued)
Page

Other Invasive Animal Species in Minnesota ............................................................. 118
Introduction ......................................................................................................... 118
Examples of Releases of Non-native Species in 2006 ....................................... 118
Black-tailed Prairie Dog....................................................................................... 118
Eurasian Collared-dove....................................................................................... 118
Chinese Mystery Snail ........................................................................................ 119
Japanese Mystery Snail ...................................................................................... 121
Banded Mystery Snail ......................................................................................... 121
New Zealand Mudsnail ...................................................................................... 124
Rusty Crayfish .................................................................................................... 124
Spiny Waterflea .................................................................................................. 125

Appendix A – Invasive Species Program Staff .......................................................... 127

Appendix B - Other State Contacts for Invasive Species Prevention and Control
Programs and Interagency Groups ............................................................................. 128
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Invasive Species in Minnesota Annual Report for 2006

List of Tables
Page

Table 1. Invasive Species Program efforts that address specific invasive
species ....................................................................................................... 10

Table 2. State and local funding (in thousands of dollars) received by the
Invasive Species Program, fiscal years 2003, 2004, 2005, 2006,
and 2007 .................................................................................................... 13

Table 3. Recent proposals submitted by the Invasive Species Program that
received federal funding.............................................................................. 14

Table 4. Invasive species related expenditures in fiscal year 2006 (FY06) (in
thousands of dollars)................................................................................... 20

Table 5. Number of watercraft inspections conducted by watercraft inspectors in
2001, 2002, 2003, 2004, 2005, and 2006 ................................................... 38

Table 6. Projects granted funding for lake-wide curly-leaf pondweed control in
2006 ........................................................................................................... 56

Table 7. Projects granted funding for collection of aquatic plant survey data in
2006 ........................................................................................................... 57

Table 8. Water quality parameters measured on pilot lake-wide treatment lakes in
2006 ........................................................................................................... 58

Table 9. May through September secchi depth in Lake Benton ............................... 60

Table 10. Classification of water bodies in Minnesota with Eurasian watermilfoil
during 2006 ................................................................................................. 65

Table 11. Number of Minnesota lakes where management of Eurasian watermilfoil
was supported with State funds in 2002-2005 ............................................ 68

Table 12. Number of lakes, budgets, and expenditures in different classes of
management of Eurasian watermilfoil in Minnesota during 2006 ............... 70

Table 13. Purple loosestrife infestations in Minnesota recorded by the Minnesota
Department of Natural Resources in 2005 and 2006 ................................. 82

Table 14. Historical herbicide applications performed by DNR and applicators
contracted by DNR in Minnesota (1989-2006) ........................................... 84

Table 15. Summary of number of insects released in each region to control purple
loosestrife (1992-2006) ............................................................................... 87

Table 16. Other Invasive Aquatic Plant Species in Minnesota ................................... 91

Table 17. Funded terrestrial invasive plant inventory/management projects FY06-07 93

Table 18. Unconfined mute swans reported in Minnesota counties during 2006 ....... 112
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Invasive Species in Minnesota Annual Report for 2006

List of Tables (continued)
Page

Table 19. Other invasive and non-native species that have been found in the wild in
Minnesota ................................................................................................... 126

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