Common Frogbit Hydrocharis Morsus-Ranae

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Common frogbit Other common names: USDA symbol: HYMO6 Hydrocharis morsus-ranae ODA rating: A Introduction: There are three species within the genus Hydrocharis; none are native to North America and H. morsus-ranae is the only species introduced into North America. As a member of the Hydrocharitaceae family, it is related to hydrilla (Hydrilla verticillata), Brazilian waterweed (Egeria densa), and waterweeds (Elodea spp.), among others. It is a highly invasive species, capable of surviving in the Pacific Northwest. Exclusive of Oregon, plants are commonly available through retail nurseries, online pond and aquarium vendors, and hobby trading websites. Distribution: There are no known populations in Oregon. Description: European frogbit is an herbaceous, annual (or short- lived perennial) monocot that resembles a small water lily and can form large, dense colonies of floating plants with tangled roots. Plants have waxy, green heart or kidney-shaped leaves (1-6 cm (0.5-2.25 in) across) (figure 1) with purple undersides which attach to strong, flexible stolons. Frogbit plants produce small (1 cm across) showy, cup-shaped flowers that are held above the water on short peduncles; flowers are white in color with a yellow dot near the base of each petal. Frogbit produce turions, overwintering in the substrate later emerging in late spring. European frogbit forms dense mats through spreading stolons in still to slow-moving water; it is considered one of Canada’s leading invasive aquatic threats. Impacts: European frogbit can rapidly dominate waterbodies in a single season. It is reported that a single plant arising from a turion can grow to cover one square meter in a single season. Canopies of frogbit would cause severe changes in water quality, dissolved oxygen, plant and animal diversity and loss of recreation. Biological controls: No biocontrol agents are available. All infestations would be targeted for eradication. Oregon Department of Agriculture Noxious Weed Control Program Photos (left) Christian Fischer 635 Capitol Street NE Salem, OR 97301 503-986-4621 (right) Robin Scribailo, www.oregon.gov/ODA/programs/Weeds/Pages/Default.aspx Purdue University .

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Elodea Genus: Egeria Or Elodea Family: Hydrocharitaceae Order: Hydrocharitales Class: Liliopsida Phylum: Magnoliophyta Kingdom: Plantae
Elodea Genus: Egeria or Elodea Family: Hydrocharitaceae Order: Hydrocharitales Class: Liliopsida Phylum: Magnoliophyta Kingdom: Plantae Conditions for Customer Ownership We hold permits allowing us to transport these organisms. To access permit conditions, click here. Never purchase living specimens without having a disposition strategy in place. The USDA does not require any special permits to ship and/or receive Elodea except in Puerto Rico, where shipment of aquatic plants is prohibited. However, in order to continue to protect our environment, you must house your Elodea in an aquarium. Under no circumstances should you release your Elodea into the wild. Primary Hazard Considerations Always wash your hands thoroughly before and after you handle your Elodea, or anything it has touched. Availability Elodea is available year round. Elodea should arrive with a green color, it should not be yellow or “slimy.” • Elodea canadensis—Usually bright green with three leaves that form whorls around the stem. The whorls compact as they get closer to the tip. Found completely submerged. Is generally a thinner species of Elodea. Has a degree of seasonality May–June. • Egeria densa—Usually bright green with small strap-shaped leaves with fine saw teeth. 3–6 leaves form whorls around the stem and compact as they get closer to the tip. Usually can grow to be a foot or two long. Is thicker and bushier than E. canadensis. Elodea arrives in a sealed plastic bag. Upon arrival, this should be opened and Elodea should be kept moist, or it should be placed in a habitat. For short term storage (1–2 weeks), Elodea should be placed in its bag into the refriger- ator (4 °C).
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Abiotic Factors, Not Herbivorous Pressure, Are Primarily Responsible
Abiotic factors, not herbivorous pressure, are primarily responsible for the performance of an invasive aquatic plant Marcio Jose Silveira, Simon Chollet, Gabrielle Thiébaut, Sidinei Magela Thomaz To cite this version: Marcio Jose Silveira, Simon Chollet, Gabrielle Thiébaut, Sidinei Magela Thomaz. Abiotic fac- tors, not herbivorous pressure, are primarily responsible for the performance of an invasive aquatic plant. Annales de Limnologie - International Journal of Limnology, EDP sciences, 2018, 54, pp.12. 10.1051/limn/2018002. hal-01769649 HAL Id: hal-01769649 https://hal-univ-rennes1.archives-ouvertes.fr/hal-01769649 Submitted on 12 May 2020 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Ann. Limnol. - Int. J. Lim. 2018, 54, 12 Available online at: © EDP Sciences, 2018 www.limnology-journal.org https://doi.org/10.1051/limn/2018002 RESEARCH ARTICLE Abiotic factors, not herbivorous pressure, are primarily responsible for the performance of an invasive aquatic plant Márcio José Silveira1,2,*, Simon Chollet2, Gabrielle Thiébaut2 and Sidinei Magela Thomaz1 1 Universidade Estadualde Maringá À UEM Research Group Ichthyology Aquaculture À Nupelia, Av Colombo 5790 Cep 87020-900, Maringá, Paraná, Brazil 2Laboratoire Ecosystemes, Biodiversite,́ Evolution (ECOBIO), UMR 6553 CNRS, University of Rennes 1, 35042 Rennes, France Received: 8 August 2017; Accepted: 17 January 2018 Abstract – Morphological performance of invasive plants can be determined by abiotic factors (e.g.
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Hydrocharis Morsus-Ranae Global
FULL ACCOUNT FOR: Hydrocharis morsus-ranae Hydrocharis morsus-ranae System: Terrestrial Kingdom Phylum Class Order Family Plantae Magnoliophyta Liliopsida Hydrocharitales Hydrocharitaceae Common name common frogbit (English), European frog's-bit (English) Synonym Similar species Limnobium spongia Summary Hydrocharis morsus-ranae is a free-floating herbaceous annual aquatic that can reach 20cm in length. It does well in calm open waters, and can be found in marshes, ditches and swamps. H. morsus-ranae produces dense floating mat of vegetation which restrict available light, dissolved gases, and nutrients. This species displaces native flora and is perhaps impacting the fauna. There is currently no management information available but there is currently a study that started in 2003 and will go through 2005 that is looking into and researching methods of controlling H. morsus-ranae on the Great Lakes and St. Lawrence River. view this species on IUCN Red List Global Invasive Species Database (GISD) 2021. Species profile Hydrocharis morsus- Pag. 1 ranae. Available from: http://www.iucngisd.org/gisd/species.php?sc=862 [Accessed 05 October 2021] FULL ACCOUNT FOR: Hydrocharis morsus-ranae Species Description IPANE (2001) states that, \"H. morsus-ranae is an herbaceous, annual aquatic that can reach 20cm in length. The plant is free-floating. The leaves of this plant are usually floating, but if the vegetation is dense enough, they can be emergent. The leathery, glabrous leaves are cordate- orbicular in shape and measure 1.2-6cm in length and in width. The lower leaf surfaces are often dark purple in colour. H. morsus-ranae is a dioecious plant.
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European Frogbit (Hydrocharis Morsus-Ranae) Invasion Facilitated by Non- Native Cattails (Typha) in the Laurentian Great Lakes
JGLR-01497; No. of pages: 9; 4C: Journal of Great Lakes Research xxx (xxxx) xxx Contents lists available at ScienceDirect Journal of Great Lakes Research journal homepage: www.elsevier.com/locate/jglr European frogbit (Hydrocharis morsus-ranae) invasion facilitated by non- native cattails (Typha) in the Laurentian Great Lakes Andrew M. Monks a,⁎, Shane C. Lishawa a, Kathryn C. Wellons b, Dennis A. Albert b, Brad Mudrzynski c, Douglas A. Wilcox d a Institute of Environmental Sustainability, Loyola University Chicago, 1032 W. Sheridan Rd Chicago, IL 60660, USA b Department of Horticulture, Oregon State University, Agricultural and Life Sciences 4017, Corvallis, OR 97331, USA c Genesee County Soil and Water Conservation District, 29 Liberty St, Batavia, NY 14020, USA d Department of Environmental Science and Ecology, State University of New York: Brockport, Lennon Hall 108 B, Brockport, NY 14420, USA article info abstract Article history: Plant-to-plant facilitation is important in structuring communities, particularly in ecosystems with high levels of Received 22 March 2019 natural disturbance, where a species may ameliorate an environmental stressor, allowing colonization by another Accepted 1 July 2019 species. Increasingly, facilitation is recognized as an important factor in invasion biology. In coastal wetlands, Available online xxxx non-native emergent macrophytes reduce wind and wave action, potentially facilitating invasion by floating plants. We tested this hypothesis with the aquatic invasive species European frogbit (Hydrocharis morsus- Communicated by Anett Trebitz ranae; EFB), a small floating plant, and invasive cattail (Typha spp.), a dominant emergent, by comparing logistic Keywords: models of Great Lakes-wide plant community data to determine which plant and environmental variables European frogbit exerted the greatest influence on EFB distribution at multiple scales.
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Ifrllt.M( ~ P~ - F\ ~\F --C;)5 + 1
ifrllt.M( ~ p~ - f\ ~\f --c;)5 + 1. r77 I) -n IiJf~J 44 1994, 3 29 :J / :J", )( 7/{v= / F +1E1L0I11K~J@\T.:5:1" I) =7 (Gorilla gorilla gorilla) 0) ~NJtm}EC: ~N1idJJX;O)!ttf11& Population density and group organization of gorillas (Gorilla gorilla gorilla) in the Nouabale-Ndoki National Park, Congo Tomoaki Nishihara** The population density of western lowland gorillas in the Nouabale-Ndoki National Park, northern Congo, was estimated both by the "bed-census" method and the "counting" method based on bed-count and direct observation. The density was calculated as 1.92 - 2.56 animals/km2 and 2.29 - 2.61 animals/km2 respectively. Because this was the first time to attempt the "bed-census" method in the Ndoki forest, direct comparison of population density was possible between western low land gorilla populations at all study sites. It was concluded that the density of the Ndoki gorillas was highest. High population density of the Ndoki gorillas was considered to be possible because they have access to a wide repertoire of foods such as highly nutritious terrestrial herbaceous vegetation (THV) and various kinds of fruits and seeds, corresponding to the seasonal fluctuation of food availability. Although the feeding habits and habitat were different between western and eastern gorillas, they shared a basically one-male group composition, large group size, and unit groups that largely shared their home ranges with each other. et al., 1993)0 =-:/ 0 -7'/ 1-' :::{I) 7 (Gorilla gorilla gorilla) IC-::>~ 'Lli, A-:fittJ{113llt-c.t>0 ~ c c~ .l) 0 ttll
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LIFE HISTORY OF EGERIA DENSA IN THE DELTA: FACTORS CONTROLLING PRODUCTION & FRAGMENT VIABILITY Project Information 1. Proposal Title: LIFE HISTORY OF EGERIA DENSA IN THE DELTA: FACTORS CONTROLLING PRODUCTION & FRAGMENT VIABILITY 2. Proposal applicants: Mark Sytsma, Portland State University Toni Pennington, Portland State University 3. Corresponding Contact Person: Mark Sytsma Portland State University PO Box 751 ESR Portland, OR 97207-0751 503 725-3833 [email protected] 4. Project Keywords: Aquatic Plants Limnology Nonnative Invasive Species 5. Type of project: Research 6. Does the project involve land acquisition, either in fee or through a conservation easement? No 7. Topic Area: Non-Native Invasive Species 8. Type of applicant: University 9. Location - GIS coordinates: Latitude: 38.0413284 Longitude: -121.6026611 Datum: Describe project location using information such as water bodies, river miles, road intersections, landmarks, and size in acres. Franks Tract and its associated tributaries are located in the Sacramento-San Joaquin Delta in California approximately 15 miles West of Stockton, California and immediately borderd on the Sw by Bethel Island. It is approximately 3300 acres. 10. Location - Ecozone: 1.4 Central and West Delta 11. Location - County: Contra Costa 12. Location - City: Does your project fall within a city jurisdiction? No 13. Location - Tribal Lands: Does your project fall on or adjacent to tribal lands? No 14. Location - Congressional District: 10 15. Location: California State Senate District Number: 7 California
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Reference Plant List
APPENDIX J NATIVE & INVASIVE PLANT LIST The following tables capture the referenced plants, native and invasive species, found throughout this document. The Wildlife Action Plan Team elected to only use common names for plants to improve the readability, particular for the general reader. However, common names can create confusion for a variety of reasons. Common names can change from region-to-region; one common name can refer to more than one species; and common names have a way of changing over time. For example, there are two widespread species of greasewood in Nevada, and numerous species of sagebrush. In everyday conversation generic common names usually work well. But if you are considering management activities, landscape restoration or the habitat needs of a particular wildlife species, the need to differentiate between plant species and even subspecies suddenly takes on critical importance. This appendix provides the reader with a cross reference between the common plant names used in this document’s text, and the scientific names that link common names to the precise species to which writers referenced. With regards to invasive plants, all species listed under the Nevada Revised Statute 555 (NRS 555) as a “Noxious Weed” will be notated, within the larger table, as such. A noxious weed is a plant that has been designated by the state as a “species of plant which is, or is likely to be, detrimental or destructive and difficult to control or eradicate” (NRS 555.05). To assist the reader, we also included a separate table detailing the noxious weeds, category level (A, B, or C), and the typical habitats that these species invade.
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(Egeria Densa Planch.) Invasion Reaches Southeast Europe
BioInvasions Records (2018) Volume 7, Issue 4: 381–389 DOI: https://doi.org/10.3391/bir.2018.7.4.05 © 2018 The Author(s). Journal compilation © 2018 REABIC This paper is published under terms of the Creative Commons Attribution License (Attribution 4.0 International - CC BY 4.0) Research Article The Brazilian elodea (Egeria densa Planch.) invasion reaches Southeast Europe Anja Rimac1, Igor Stanković2, Antun Alegro1,*, Sanja Gottstein3, Nikola Koletić1, Nina Vuković1, Vedran Šegota1 and Antonija Žižić-Nakić2 1Division of Botany, Department of Biology, Faculty of Science, University of Zagreb, Marulićev trg 20/II, 10000 Zagreb, Croatia 2Hrvatske vode, Central Water Management Laboratory, Ulica grada Vukovara 220, 10000 Zagreb, Croatia 3Division of Zoology, Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, Croatia Author e-mails: [email protected] (AR), [email protected] (IS), [email protected] (AA), [email protected] (SG), [email protected] (VŠ), [email protected] (NK), [email protected] (AZ) *Corresponding author Received: 12 April 2018 / Accepted: 1 August 2018 / Published online: 15 October 2018 Handling editor: Carla Lambertini Abstract Egeria densa is a South American aquatic plant species considered highly invasive outside of its original range, especially in temperate and warm climates and artificially heated waters in colder regions. We report the first occurrence and the spread of E. densa in Southeast Europe, along with physicochemical and phytosociological characteristics of its habitats. Flowering male populations were observed and monitored in limnocrene springs and rivers in the Mediterranean part of Croatia from 2013 to 2017.
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Brazilian Elodea Egeria Densa
Brazilian Elodea Egeria densa seagrant.psu.edu Photo courtesy of Richard Old, XID Services, Inc., Bugwood.org Species at a Glance Brazilian elodea, also known as Brazilian waterweed, is a leafy, submerged aquatic perennial with populations of only male plants in the United States. Because of its showy flowers and oxygen generating capabilities, it is widely used as an aquarium plant and is still sold today under its alias Anacharis. Species Description Brazilian elodea can reach lengths of greater than 3 m (10 ft) and survive either rooted or free-floating in up to 6 m (20 ft) of water. The leaves are bright to dark green, blade-shaped, with very fine teeth on the leaf margins that are only visible with magnification. Leaves are densely arranged in whorls of 4-6, although occasionally they can be found in whorls of three. Flowers are large and showy with three white Map courtesy of petals, a yellow center, and three green sepals. They emerge above or at the water’s United States Geological Survey. surface on slender stalks projecting from leaf axils near the stem tips. BRAZILIAN ELODEA Native & Introduced Ranges Egeria densa Native to Brazil and coastal regions of Argentina and Uruguay, Brazilian elodea is found to be invasive throughout the United States and at least 27 other countries. The earliest record in the United States was in 1893 when the plant was collected on Long Island, New York. In Pennsylvania, it can be found in the southeast region in Berks, Bucks, Montgomery, Delaware, and Philadelphia counties as well as in Allegheny and Bedford counties.
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AQUATIC PLANT PESTS Egeria Densa
PLANT PEST CONTROL AQUATIC PLANT PESTS Egeria densa Why are we worried? Where is it found? Egeria, an oxygen weed, can form dense Egeria is abundant in Waikato and growths up to five metres tall and reaching scattered throughout the remainder of New the water surface. It is a nuisance in Zealand. In Hawke’s Bay it has been found recreational waters as it thrives in lakes in the Karamu Stream and is suspected to and ponds and slow flowing water. Stem be in a drain at Tamatea. fragments are spread by currents and boats from one lake to another and could What’s the best way to control the plant? be a problem for hydro-electric schemes. Torpedo herbicide containing diquat in the form of a gel is recommended. The gel is What does it look like? sprayed onto the water and as it sinks it • Egeria has a dense and more leafy clings to the plant. The gel must be used in habit than Elodea, Hydrilla or clear water, not in murky or muddy water. Lagarosiphon. Label directions must be followed. Contact the Regional Council for more information • Egeria lives on the bottom of waterways, on control. and roots in sand or mud. It can form dense growth up to five metres tall, reaching the water surface. • It has whorls of four to five leaves at each node. Leaves are up to 40 mm long by 25 mm wide, with minutely serrated margins. • The stems of Egeria are brittle and Photo courtesy of NIWA usually 3 mm in diameter, and the flowers are white, with three petals from 4 mm to 12 mm long.
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Forest Health Technology Enterprise Team Biological Control of Invasive
Forest Health Technology Enterprise Team TECHNOLOGY TRANSFER Biological Control Biological Control of Invasive Plants in the Eastern United States Roy Van Driesche Bernd Blossey Mark Hoddle Suzanne Lyon Richard Reardon Forest Health Technology Enterprise Team—Morgantown, West Virginia United States Forest FHTET-2002-04 Department of Service August 2002 Agriculture BIOLOGICAL CONTROL OF INVASIVE PLANTS IN THE EASTERN UNITED STATES BIOLOGICAL CONTROL OF INVASIVE PLANTS IN THE EASTERN UNITED STATES Technical Coordinators Roy Van Driesche and Suzanne Lyon Department of Entomology, University of Massachusets, Amherst, MA Bernd Blossey Department of Natural Resources, Cornell University, Ithaca, NY Mark Hoddle Department of Entomology, University of California, Riverside, CA Richard Reardon Forest Health Technology Enterprise Team, USDA, Forest Service, Morgantown, WV USDA Forest Service Publication FHTET-2002-04 ACKNOWLEDGMENTS We thank the authors of the individual chap- We would also like to thank the U.S. Depart- ters for their expertise in reviewing and summariz- ment of Agriculture–Forest Service, Forest Health ing the literature and providing current information Technology Enterprise Team, Morgantown, West on biological control of the major invasive plants in Virginia, for providing funding for the preparation the Eastern United States. and printing of this publication. G. Keith Douce, David Moorhead, and Charles Additional copies of this publication can be or- Bargeron of the Bugwood Network, University of dered from the Bulletin Distribution Center, Uni- Georgia (Tifton, Ga.), managed and digitized the pho- versity of Massachusetts, Amherst, MA 01003, (413) tographs and illustrations used in this publication and 545-2717; or Mark Hoddle, Department of Entomol- produced the CD-ROM accompanying this book.
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Current and Potential Aquatic Invasive Species in Ontario and the Great Lakes Region: a Compilation of Ecological Information
Science and Research Information Report IR-16 Current and potential aquatic invasive species in Ontario and the Great Lakes region: A compilation of ecological information Science and Research Information Report IR-16 Current and potential aquatic invasive species in Ontario and the Great Lakes region: A compilation of ecological information Elizabeth C. Hatton1, Jeffrey D. Buckley1, Shannon A. Fera1,2, Samantha Henry1, Len M. Hunt3, D. Andrew R. Drake4 and Timothy B. Johnson1 1 Aquatic Research and Development Section, Ministry of Natural Resources and Forestry (MNRF), 41 Hatchery Lane, Picton, ON K0K 2T0 2 Current address: Fisheries Section, Species Conservation Policy Branch, MNRF, 300 Water Street, Peterborough, ON K9J 8M5 3 Centre for Northern Forest Ecosystem Research, MNRF, 103-421 James St S, Thunder Bay, ON P7E 2V6 4 Great Lakes Laboratory for Fisheries and Aquatic Sciences, Fisheries and Oceans Canada, 867 Lakeshore Road, Burlington, ON L7S 1A1 2019 Science and Research Branch Ministry of Natural Resources and Forestry © 2019, Queen’s Printer for Ontario Copies of this publication are available from [email protected]. Cette publication hautement spécialisée, Current and Potential Aquatic Invasive Species in Ontario and the Great Lakes Region: A Compilation of Ecological Information, n’est disponible qu’en anglais conformément au Règlement 671/92, selon lequel il n’est pas obligatoire de la traduire en vertu de la Loi sur les services en français. Pour obtenir des renseignements en français, veuillez communiquer avec le ministère des Richesses naturelles et des Forêts au [email protected]. Some of the information in this document may not be compatible with assistive technologies.
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