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Aquatic Plants Technical Assistance Program Aquatic Plants Technical Assistance Program 1999 Activity Report May 2000 Publication No. 00-03-018 This report is available on Ecology’s home page on the world wide web at http://www.wa.gov/ecology/biblio/0003018.html For additional copies of this publication, please contact: Department of Ecology Publications Distributions Office Address: PO Box 47600, Olympia WA 98504-7600 E-mail: [email protected] Phone: (360) 407-7472 Refer to Publication Number 00-03-018 The Department of Ecology is an equal opportunity agency and does not discriminate on the basis of race, creed, color, disability, age, religion, national origin, sex, marital status, disabled veteran's status, Vietnam Era veteran's status, or sexual orientation. If you have special accommodation needs or require this document in alternative format, please contact the Environmental Assessment Program, Michelle Ideker at (360)-407-6677 (voice). Ecology's telecommunications device for the deaf (TDD) number at Ecology Headquarters is (360) 407-6006. Aquatic Plants Technical Assistance Program 1999 Activity Report by Jenifer Parsons Environmental Assessment Program Olympia, Washington 98504-7710 May 2000 Publication No. 00-03-018 Table of Contents List of Figures and Tables ...............................................................................................................ii Figures......................................................................................................................................ii Tables.......................................................................................................................................ii Acknowledgments..........................................................................................................................iii Abstract ........................................................................................................................................... v Introduction ..................................................................................................................................... 1 Technical Assistance....................................................................................................................... 2 Site Visits ........................................................................................................................................ 4 Introduction.............................................................................................................................. 4 Site Visit Objectives................................................................................................................. 4 Field Methods .......................................................................................................................... 4 Aquatic Plant Survey Results................................................................................................... 5 General Results .................................................................................................................6 Black River Polygonum hydropiper ............................................................................... 10 Rare Plants ...................................................................................................................... 13 Loon Lake Study .................................................................................................................... 16 Abstract........................................................................................................................... 16 Long Lake Project .................................................................................................................. 16 Introduction..................................................................................................................... 16 Study Site........................................................................................................................ 17 Methods .......................................................................................................................... 17 Results and Discussion ................................................................................................... 19 Alkalinity Results................................................................................................................... 21 Herbarium...................................................................................................................................... 23 Methods Used in Aquatic Plant Identification....................................................................... 23 Methods Used in Collection and Preservation....................................................................... 23 Aquatic Weed Management Fund................................................................................................. 24 Related Activities .......................................................................................................................... 24 References ..................................................................................................................................... 25 Appendix A Site Visit Table 1999 Appendix B Site Visit Summary Table 1994-1999 Appendix C Myriophyllum spicatum Distribution Map Appendix D Loon Lake Demonstration Project Paper Appendix E Alkalinity Results 1995-1999 Appendix F Plant Identification References Appendix G Herbarium Specimens, Grouped by Family Aquatic Plants Technical Assistance Program Page i 1999 Activity Report List of Figures and Tables Figures Figure 1. Known locations of Egeria densa in Washington, 1999.................................................... 7 Figure 2. Known locations of Myriophyllum aquaticum in Washington, 1999. ............................... 8 Figure 3. Known locations of Utricularia inflata in Washington, 1999. .......................................... 9 Figure 4. Black River Polygonum hydropiper density in 1998 and 1999. ...................................... 12 Figure 5. Lake Leland Egeria densa cover, 1994 and 1995............................................................ 14 Figure 6: Egeria densa cover in Lake Leland, 1996 and 1999........................................................ 15 Figure 7. Sampling sections and sample sites on Long Lake, Kitsap County................................. 18 Figure 8. Long Lake whole lake mean biomass from selected years. ............................................. 20 Figure 9. Box plot of alkalinity ranges for selected macrophytes. .................................................. 22 Tables Table 1. Scientific and common plant names .................................................................................... 1 Table 2. Aquatic plant technical outreach activities - 1999............................................................... 3 Table 3. Mean biomass for individual species by lake area and the area-weighted mean whole lake biomass. August 1999. ......................................................................... 19 Table 4. List of applicants for AWMF grant funds in 1999 and the amount awarded.................... 24 Page ii Aquatic Plants Technical Assistance Program 1999 Activity Report Acknowledgments There are many people I would like to thank for contributions to this document and the projects described within: ! Sarah O’Neal, for assistance with field work and other support during the field season. ! Kathy Hamel, Allen Moore, and Dave Lamb for assistance in sampling Loon Lake. ! Dave Hallock, Kathy Hamel, and Michelle Ideker for reviewing and publishing the document. ! Dr. William Ehinger for assistance with statistical analysis of the Loon Lake data, and document review. ! Dr. John Madsen and Dr. Kurt Getsinger for advice and assistance with the Loon Lake project. ! Judy and Jim Richardson for support and assistance with the Loon Lake project. ! Sarah Gage from the University of Washington Herbarium, Western Washington University herbarium staff, and Washington State University staff for assistance with plant distribution information and identification. ! Dr. Robert Haynes of the University of Alabama and Dr. Adolf Ceska for help identifying plant specimens. ! Dr. Galen Smith from the University of Wisconsin for assistance with plant identification and taxonomy. Aquatic Plants Technical Assistance Program Page iii 1999 Activity Report Page iv Aquatic Plants Technical Assistance Program 1999 Activity Report Abstract The objectives of the Aquatic Plant Technical Assistance Program are to: ! provide advice on aquatic plant identification, biology, and management to government agencies and the public; ! document aquatic plant distribution and habitat through site visits; and ! assist with evaluating projects supported by Freshwater Aquatic Weed Program grant money. During the 1999 field season, aquatic plant data were gathered at 86 different waterbodies located throughout the state. Several previously unknown populations of non-native invasive aquatic plants were recorded. Myriophyllum spicatum (Eurasian watermilfoil) was found in Palmer Lake, Okanogan County, Black Lake, Pacific County, Marshall Lake, Pend Oreille County and Drano Lake, Skamania County. Egeria densa (Brazilian elodea) was found for the first time in Loomis Lake, Pacific County. A population of Myriophyllum aquaticum (parrotfeather) was found in Brooks Slough, Wahkiakum County. The emergent species Lysimachia vulgaris (garden loosestrife) was found in the wetlands around Fish Lake, Chelan County and Lake Alice,
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