Finely Divided Aquatic Plants Powerpoint

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Finely Divided Aquatic Plants Powerpoint

Aquatic Plants with Finely Divided Leaves Eurasian water-milfoil Eurasian Water-milfoil Water-milfoil have leaves like feathers Northern water-milfoil Fewer than 12 pairs of More than leaflets 12 pairs of leaflets White water crowfoot Fanwort Water marigold Bladderwort Plants with Finely Divided Leaves: Water-milfoil Myriophyllum sibiricum Northern water-milfoil Myriophyllum spicatum Eurasian water-milfoil Myriophyllum verticillatum Whorled water-milfoil Myriophyllum heterophyllum Various-leaved water-milfoil Myriophyllum farwellii Farwell’s water-milfoil Myriophyllum alterniflorum Alternate-flowered water-milfoil (Myriophyllum tenellum) (Dwarf water-milfoil)* *not finely divided Myriophyllum spicatum Eurasian waterMyriophyllum-milfoil spicatum Myriophyllum sibiricum Northern water-milfoil Myriophyllum verticillatum Whorled water-milfoil •Green or brown stem •Long, limp leaves •Club-shaped turions Myriophyllum verticillatum Whorled water-milfoil Winter buds (turions) Seen in fall Myriophyllum alterniflorum Alternate-flowered water-milfoil • Smaller than other water-milfoil • Reddish/brown color Myriophyllum heterophyllum Various-leaved water-milfoil Plants with Finely Divided Leaves: Bladderworts • Utricularia vulgaris • Utricularia purpurea • Utricularia geminiscapa • Utricularia intermedia • Other Utricularia Utricularia vulgaris Common bladderwort •Leaves covered with bladders •Turion at tip in late summer Utricularia purpurea Purple bladderwort Leaves in whorls Bladders near leaf tips Utricularia geminiscapa Twin-stemmed bladderwort cleistogamous fruit Utricularia intermedia Flat-leaf bladderwort Utricularia intermedia Flat-leaf bladderwort Other Plants with Finely Divided Leaves • Megalodonta beckii • Cabomba caroliniana • Ceratophyllum demersum • Ceratophyllum echinatum • Ranunculus aquatilis Fanwort Water marigold Fanwort Water marigold Ceratophyllum demersum Coontail Ranunculus aquatilis White water crow foot.

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Whorled Water-Milfoil, Myriophyllum Verticillatum
Natural Heritage Whorled Water-milfoil & Endangered Species Myriophyllum verticillatum L. Program www.mass.gov/nhesp State Status: Endangered Federal Status: None Massachusetts Division of Fisheries & Wildlife DESCRIPTION: The Whorled Water-milfoil (Myriophyllum verticillatum) is an aquatic herb of the Haloragaceae family. The plant grows submersed in water, except for the terminal inflorescence, which emerges above the surface. Small, sessile flowers are oppositely arranged along the uppermost portion of the spike. The stems are elongate and narrow, often branched, and bear whorled leaves that are pinnately dissected into fine segments. AIDS TO IDENTIFICATION: Distinguishing the various species of water-milfoils is difficult, especially in the vegetative condition, and a technical manual and an expert should always be consulted. This is one of a few water-milfoils that produce turions, which are small, bulb-like propagules that allow the plant to spread vegetatively. In this species, the turions are club-shaped (wider at the tips than at the base). Another diagnostic character is the presence of consistently deeply lobed floral bracts that greatly exceed (are more than twice as long as) the length of the female flowers. The combination of these characters, plus the presence of whorled leaves, serves to distinguish this species from the other water-milfoils in Massachusetts. Crow, Garrett, and C. Barre Hellquist. 2000. Aquatic and Wetland Plants. Volume 1. University of Wisconsin Press, Madison, Wisconsin. SIMILAR SPECIES: Common water-milfoils could easily be confused with the Whorled Water-milfoil. For example, the native Lowly Water-milfoil (Myriophyllum humile) differs in having leaves that are strictly alternate, rather than whorled as in the Whorled Water-milfoil.
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(Myriophyllum Spicatum) and Variable-Leaf Milfoil
King County Noxious Weed Control Program BEST MANAGEMENT PRACTICES Eurasian Watermilfoil Myriophyllum spicatum Class B Non-Regulated Noxious Weed Control Recommended Variable-leaf Milfoil Myriophyllum heterophyllum Class A Noxious Weed Control Required Haloragaceae Legal Status in King County: Variable‐leaf milfoil is a Class A Noxious Weed according to Washington State Noxious Weed Law, RCW 17.10 (non‐native species that is harmful to environmental and economic resources and that landowners are required to eradicate). In accordance with state law, the King County Noxious Weed Control Board requires property owners to eradicate variable‐leaf milfoil from private and public lands throughout the county (eradicate means to eliminate a noxious weed within an area of infestation). Eurasian watermilfoil is a Class B Non‐Regulated Noxious Weed (non‐native species that can be designated for control based on local priorities). The State Weed Board has not designated this species for control in King County. The King County Weed Control Board recommends control of Eurasian watermilfoil where feasible, but does not require it. State quarantine laws prohibit transporting, buying, selling, or distributing plants, plant parts or seeds of these milfoils. BACKGROUND INFORMATION Impacts and History Eurasian watermilfoil is native to Eurasia but is widespread in the United States, including Washington. In King County it is present in M. spicatum, M. spicatum, numerous lakes and slow moving University of Minnesota Andrzej Martin Kasiński streams and rivers. Variable‐leaf milfoil is native to the eastern United States. It was introduced to southwestern British Columbia several decades ago and was confirmed in Thurston and Pierce Counties in 2007.
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Hybrids of Eurasian Watermilfoil and Northern Watermilfoil Are
1 DRAFT WRITTEN FINDINGS OF THE WASHINGTON STATE NOXIOUS WEED CONTROL BOARD Based on the updated Myriophyllum spicatum, Eurasian watermilfoil, written findings Proposed Class C noxious weed for 2018 Scientific Name: Myriophyllum spicatum L. x Myriophyllum sibiricum Kom. Common Name: Hybrid watermilfoil; Eurasian watermilfoil hybrid Synonyms: For hybrid: none; for Myriophyllum spicatum: none; for Myriophyllum sibiricum: Myriophyllum exalbescens Fernald; Myriophyllum spicatum L. var. exalbescens (Fernald) Jeps. Family: Haloragaceae Legal Status: Proposed Class C noxious weed; Myriophyllum spicatum Class B noxious weed Additional Listing: Myriophyllum spicatum is on the Washington State quarantine list (WAC 16- 752) Image: Hybrid watermilfoil stem, stem cross-section, and leaf, sample from Mattoon Lake in Kittitas County. Image by Jenifer Parsons, Washington State Department of Ecology. Description and Variation: Hybrids of Eurasian watermilfoil and northern watermilfoil are increasingly common in Washington State and are now being considered for listing as a Class C noxious weed. 2 These hybrid watermilfoils have intermediate characteristics, including a variable number of leaflets, usually in a range of overlap between the parent species, and some genetic strains may form turions, while others will not (R. Thum, personal communication, 2015). Hybridization occurs frequently, and therefore the hybrids have variable characteristics relative to their parents. Also, second generation hybrids have been found, where the hybrid back-crossed with one of the parents, leading to additional physical traits and potential complications where management is concerned (Zuellig and Thum 2012). Genetic analysis is required to be certain of the species when hybridization is suspected (Moody and Les 2002). Eurasian watermilfoil, northern watermilfoil, and hybrid watermilfoil, are submersed perennials with feather-like submersed leaves and flower stems with small flowers and very small leaf-like bracts that typically rise above the water surface.
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British Dragonfly Society Sussex Group Newsletter Winter! 2019
British Dragonfly Society Sussex Group Newsletter Winter! 2019 No 43 Expect the Unexpected By John Arnott Chichester Natural History Society members have been monitoring dragonflies at RSPB Medmerry since summer 2014, soon after it was flooded in autumn 2013. As many people know, this newly created wetland complex was designed primarily as a coastal flood mitigation system but with many natural habitat features built in. On the western edge is a complex of runoff channels with many bends and interconnected pools, all providing ideal habitat for dragonflies. Six years on and the channel system has become filled with a lush growth of aquatic plants domi- nated by tall emergents such as Branched Bur-reed Sparganium erectum, Reed Sweet-grass Glyceria maxima and Water-plantain Alisma plantago-aquatica together with submerged aquatics, in particu- lar, dense mats of Spiked Water-milfoil Myriophyllum spicatum. The management priority here is for Water Vole Arvicola amphibius so good aquatic plant growth is encouraged. too I’ve always thought that Med- merry would be in the front line for migrant species of dragonfly from the Continent. We rec- orded our first sightings of Small Red-eyed Damselfly Eryth- romma viridulum on 1st August 2014 but since then it has been quiet as far as migrant dragon- flies are concerned. Sussex Dragonfly Society Newsletter Continued ... I’ve always been a keen follower of Adrian Parr’s Migrant Dragonflies Facebook page and before every survey I spend time going through his books to remind myself what migrants to look out for. On 5th July this year we arrived at the RSPB Medmerry car park at Earnley in good time to meet other members of Chichester NHS and have lunch before our first dragonfly survey of the season.
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Written Findings of the Washington State Noxious Weed Control Board (Draft Stage November 2007)
WRITTEN FINDINGS OF THE WASHINGTON STATE NOXIOUS WEED CONTROL BOARD (DRAFT STAGE NOVEMBER 2007) Scientific Name: Myriophyllum heterophyllum Michx. Common Name: variable-leaf milfoil, two-leaved watermilfoil; broadleaf watermilfoil Family: Haloragaceae Legal Status: 2008 Class A noxious weed Description and variation: Overall Habit: M. heterophyllum is a submersed, rooted macro- phyte, typically with both submerged and emergent leaves growing from a stout stem up to 3mm in diameter and 100 cm in length. Stem color ranges from dark red to reddish-brown. Leaves: Submerged leaves between 2-4 cm, pinnately dissected into 7-11 leaflets and arranged into whorls of 4-5 leaves. Emergent spikes 5-15 cm with persistent, lanceolate to oblong and promi- Britton, N.L., and A. Brown. 1913. An nently serrated bracts that are reflexed, extend past the flowers, illustrated flora of the northern United States, Canada and the British Posses- and are 4-18 mm in length. The emergent stem typically occurs sions. Vol. 2: 616. Courtesy of Kentucky later in the growing season, i.e., late summer. Native Plant Society. Scanned by Om- nitek Inc. Usage Requirements. Flowers: Infloresence is a spike 5-35 cm long, consisting of flowers in whorls of four. Flowers have four stamens and petals are 1.5-3 mm. Fruits are 1.1.5 mm in length and almost perfectly round with four chambers. Each carpel is either rounded or has two keels along the dorsal side and is rough to bumpy with the tip curved into a upward-pointing beak. Note: Phenotypically, it is difficult to differentiate between M.
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Myriophyllum Heterophyllum Michx. (Haloragaceae): Control and Vegetative Reproduction in Southwestern Maine Jacolyn E
The University of Maine DigitalCommons@UMaine Electronic Theses and Dissertations Fogler Library 5-2007 Myriophyllum heterophyllum Michx. (Haloragaceae): Control and Vegetative Reproduction in Southwestern Maine Jacolyn E. Bailey Follow this and additional works at: http://digitalcommons.library.umaine.edu/etd Part of the Botany Commons, and the Water Resource Management Commons Recommended Citation Bailey, Jacolyn E., "Myriophyllum heterophyllum Michx. (Haloragaceae): Control and Vegetative Reproduction in Southwestern Maine" (2007). Electronic Theses and Dissertations. 373. http://digitalcommons.library.umaine.edu/etd/373 This Open-Access Thesis is brought to you for free and open access by DigitalCommons@UMaine. It has been accepted for inclusion in Electronic Theses and Dissertations by an authorized administrator of DigitalCommons@UMaine. MYRIOPHYLLUM HETEROPHYLLUM MICHX. (HALORAGACEAE): CONTROL AND VEGETATIVE REPRODUCTION IN SOUTHWESTERN MAINE By Jacolyn E. Bailey B.A. University of Maine Farmington, 1995 A THESIS Submitted in Partial Fulfillment of the Requirements for the Degree of Master of Science (in Ecology & Environmental Science) The Graduate School University of Maine May, 2007 Advisory Committee: Dr, Aram J.K. Calhoun, Professor of Wetland Ecology, Advisor Dr. Ann C. Dieffenbacher-Krall, Assistant Research Professor, Climate Change Studies Dr. Katherine E. Webster, Assistant Professor of Biological Sciences ;' © 2007 Jacolyn Ellen Bailey All Rights Reserved 11 MYRIOPHYLLUM HETEROPHYLLUM MICHX. (HALORAGACEAE): CONTROL AND VEGETATIVE REPRODUCTION IN SOUTHWESTERN MAINE By Jacolyn E. Bailey Thesis Advisor: Dr. Aram J.K. Calhoun An Abstract of the Thesis Presented in Partial Fulfillment of the Requirements for the Degree of Master of Science (in Ecology & Environmental Science) May, 2007 Native to the southeastern United States, variable-leaf watermilfoil (Myriophyllum heterophyllum) is an invasive species in the Northeast and has been documented in Maine lakes for twenty years.
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DCR Guide to Aquatic Plants in Massachusetts
A GUIDE TO AQUATIC PLANTS IN MASSACHUSETTS Contacts: Massachusetts Department of Conservation and Recreation, Lakes & Ponds Program www.mass.gov/lakesandponds Massachusetts Department of Environmental Protection www.mass.gov/dep Northeast Aquatic Nuisance Species Panel www.northeastans.org Massachusetts Congress of Lakes & Ponds Associations (COLAP) www.macolap.org '-I... Printed on Recycled Paper 2016 A Guide to Aquatic Plants in Massachusetts Common Name Scientific Name Page No. Submerged Plants ........................................................................................................................9 Arrowhead .............................................................Sagittaria .......................................................................11 Bladderwort...........................................................Utricularia ......................................................................17 Common Bladderwort ...................................Utricularia vulgaris ........................................................18 Flatleaf Bladderwort ......................................Utricularia intermedia ....................................................18 Little Floating Bladderwort ............................Utricularia radiata .........................................................18 Purple Bladderwort........................................Utricularia purpurea.......................................................18 Burreed..................................................................Sparganium
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Comb Water-Milfoil Myriophyllum Verticillatum
Comb Water-milfoil Myriophyllum verticillatum State Status: Endangered Federal Status: None Description: The Comb Water-milfoil (Myriophyllum verticillatum) is an aquatic herb of the Haloragaceae family. The plant grows submersed in water, except for the terminal inflorescence, which emerges above the surface. Small, sessile flowers are oppositely arranged along the uppermost portion of the spike. The stems are elongate and narrow, often branched, and bear whorled leaves that are pinnately dissected into fine segments. Aids to Identification: Distinguishing the various species of water-milfoils is difficult, especially in the vegetative condition, and a technical manual and an expert should always be consulted. This is one of a few water-milfoils that produce turions, which are small, bulb-like propagules that allow the plant to spread vegetatively. In this species, the turions are club-shaped (wider at the tips than at the base). Another diagnostic character is the presence of consistently deeply lobed floral bracts that greatly exceed (are more than twice as long as) the length of the female flowers. The combination of these characters, plus the presence of whorled leaves, serves to distinguish this species from the Crow, Garrett, and C. Barre Hellquist. 2000. Aquatic and other water-milfoils in Massachusetts. Wetland Plants. Volume 1. University of Wisconsin Press, Madison, Wisconsin. Distribution in Massachusetts 1985 - 2011 Based on records in the Natural Heritage Database Please allow the Natural Heritage & Endangered Species Program to continue to conserve the biodiversity of Massachusetts with a contribution for ‘endangered wildlife conservation’ on your state income tax form as these donations comprise a significant portion of our operating budget.
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Myriophyllum Spicatum L
A WEED REPORT from the book Weed Control in Natural Areas in the Western United States This WEED REPORT does not constitute a formal recommendation. When using herbicides always read the label, and when in doubt consult your farm advisor or county agent. This WEED REPORT is an excerpt from the book Weed Control in Natural Areas in the Western United States and is available wholesale through the UC Weed Research & Information Center (wric.ucdavis.edu) or retail through the Western Society of Weed Science (wsweedscience.org) or the California Invasive Species Council (cal-ipc.org). Myriophyllum spicatum L. Eurasian watermilfoil Family: Haloragaceae Range: Primarily temperate regions in the Northern Hemisphere, but also in some sub-tropical to tropical areas. It is present in nearly every state in the United States, with the possible exception of Wyoming. Habitat: Ponds, lakes, rivers, streams, canals, ditches. Usually in still or slow-moving water, but occasionally found in faster moving water of streams and rivers. Origin: Native to Eurasia and first documented near Maryland around 1942, possibly introduced through the aquarium trade. Impacts: Eurasian watermilfoil can develop colonies that form large sub- surface or surface mats. Mats impede water flow, interfere with boat traffic and recreational activities, create mosquito habitat, and displace native aquatic vegetation. Western states listed as Noxious Weed: Colorado, Idaho, Montana, New Mexico, Nevada, Oregon, South Dakota, Washington California Invasive Plant Council (Cal-IPC) Inventory: High Invasiveness Eurasian watermilfoil is a common submerged perennial with creeping rhizomes and finely dissected whorled submersed leaves. The stems can be 12 to 20 ft long, becoming emergent only while flowering or after stream or canal drawdown when moisture is still present.
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On the Flora of Australia
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Use of an Aquatic Weevil, Euhrychiopsis Lecontei, As A
Use of an aquatic weevil, Euhrychiopsis lecontei, as a biological control agent against Eurasian watermilfoil (Myriophyllum spicatum) in Michigan’s Les Cheneaux Islands. A study sponsored by the Les Cheneaux Watershed Council R.A. Smith Chair, Water Ecology January, 2010 Use of an aquatic weevil, Euhrychiopsis lecontei (Dietz), as a biological control agent against Eurasian watermilfoil (Myriophyllum spicatum) in Michigan’s Les Cheneaux Islands. R.A. Smith Summary. An aquatic weevil (Euhrychiopsis lecontei) was used for biological control of the highly invasive Eurasian watermilfoil (Myriophyllum spicatum) in Cedarville Bay, a shallow, protected harbor of the Les Cheneaux Islands located in northern Lake Huron. The density and vigor of Eurasian watermilfoil (EWM) was quantified for two years following the introduction of E. lecontei in 2007. Program success criteria included reduction of EWM density and re-growth of native macrophytes. Fourteen months following E.lecontei introduction, a decrease of eighty-five to ninety-five percent in EWM growth was observed at both test sites. Native macrophytes began to grow in voids where they could not previously compete against the invasive EWM. Presence of a native E. lecontei population was a probable factor in successful EWM control in this project. Primary goals of the Les Cheneaux Watershed Council have been achieved by the use of E. lecontei to control EWM growth in Cedarville Bay: EWM presence has been significantly reduced, native macrophytes are again present and recreational boaters can now transit portions of the bay that were minimally navigable prior to this study. The Council will continue to monitor EWM growth and re-growth of macrophyte species in the project test areas.
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The Massachusetts Lake and Pond Guide
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