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  1. Article: On the move: New insights on the ecology and management of native and alien macrophytes

    Hofstra, Deborah / Schoelynck, Jonas / Ferrell, Jason / Coetzee, Julie / de Winton, Mary / Bickel, Tobias O / Champion, Paul / Madsen, John / Bakker, Elisabeth S / Hilt, Sabine / Matheson, Fleur / Netherland, Mike / Gross, Elisabeth M

    Aquatic botany. 2020 Mar., v. 162

    2020  

    Abstract: Globally, freshwater ecosystems are under threat. The main threats come from catchment land-use changes, altered water regimes, eutrophication, invasive species, climate change and combinations of these factors. We need scientific research to respond to ... ...

    Abstract Globally, freshwater ecosystems are under threat. The main threats come from catchment land-use changes, altered water regimes, eutrophication, invasive species, climate change and combinations of these factors. We need scientific research to respond to these challenges by providing solutions to halt the deterioration and improve the condition of our valuable freshwaters. This requires a good understanding of aquatic ecosystems, and the nature and scale of changes occurring. Macrophytes play a fundamental role in aquatic systems. They are sensitive indicators of ecosystem health, as they are affected by run-off from agricultural, industrial or urban areas. On the other hand, alien macrophytes are increasingly invading aquatic systems all over the world. Improving our knowledge on the ecology and management of both native and alien plants is indispensable to address threats to freshwaters in order to protect and restore aquatic habitats. The International Aquatic Plants Group (IAPG) brings together scientists and practitioners based at universities, research and environmental organisations around the world. The main themes of the 15th symposium 2018 in New Zealand were biodiversity and conservation, management, invasive species, and ecosystem response and restoration. This Virtual Special Issue provides a comprehensive review from the symposium, addressing the ecology of native macrophytes, including those of conservation concern, and highly invasive alien macrophytes, and the implications of management interventions. In this editorial paper, we highlight insights and paradigms on the ecology and management of native and alien macrophytes gathered during the meeting.
    Keywords aquatic habitat ; biodiversity ; climate change ; environmental health ; eutrophication ; freshwater ecosystems ; indigenous species ; introduced plants ; invasive species ; land use change ; macrophytes ; runoff ; urban areas ; watersheds ; New Zealand
    Language English
    Dates of publication 2020-03
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 390388-6
    ISSN 0304-3770
    ISSN 0304-3770
    DOI 10.1016/j.aquabot.2019.103190
    Database NAL-Catalogue (AGRICOLA)

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  2. Article: Differential Herbicide Response among Three Phenotypes of Cabomba caroliniana

    Bultemeier, Brett W / Netherland, Mike D / Ferrell, Jason A / Haller, William T

    Invasive plant science and management. 2009 Oct., v. 2, issue 4

    2009  

    Abstract: Cabomba is a submersed aquatic plant native to the southeastern United States that is commonly sold worldwide through the aquarium trade. While infrequently managed in its native range, cabomba has recently been reported as invasive and tolerant to ... ...

    Abstract Cabomba is a submersed aquatic plant native to the southeastern United States that is commonly sold worldwide through the aquarium trade. While infrequently managed in its native range, cabomba has recently been reported as invasive and tolerant to management efforts in the northern areas of the United States and in other countries. Invasive populations of cabomba are characterized by a phenotype that is bright green. In contrast, cabomba native to the southeastern United States is characterized by a red phenotype, while plants sold through the aquarium trade have intermediate characteristics of both the green and red phenotypes. The response of the three cabomba phenotypes to selected herbicides was evaluated by measuring photosynthetic response over the course of a static 144-hr exposure. Plants were exposed to the maximum recommended use-rates of 2,4-D, carfentrazone, copper, diquat, endothall (amine and dipotasium salt formulation), flumioxazin, quinclorac, triclopyr, and a combination of diquat and copper. A submersed plant species known to be sensitive to each of these herbicides was also included to compare photosynthetic response of the cabomba to a susceptible plant. The photosynthetic response of the red and green phenotypes differed following exposure to carfentrazone, diquat, 2,4-D, triclopyr, and flumioxazin. Diquat, diquat plus copper, endothall (amine salt), and flumioxazin were the only products that resulted in a greater than 50% reduction of photosynthesis in all three phenotypes of cabomba. A second experiment was conducted where all three phenotypes of cabomba were exposed to these four herbicides for 24 hr, and photosynthesis was evaluated. Following the 24-hr exposure, results further documented distinct response differences between the green and red phenotypes, with the green phenotype demonstrating a reduced sensitivity to the herbicides evaluated. Results demonstrate clear phenotypic differences in response to herbicide treatments and lack of susceptibility of cabomba to most herbicides.
    Keywords Cabomba ; submerged aquatic plants ; aquatic weeds ; herbicides ; herbicide-resistant weeds ; invasive species ; phenotype ; color ; biotypes ; photosynthesis ; application rate
    Language English
    Dates of publication 2009-10
    Size p. 352-359.
    Document type Article
    ZDB-ID 2426224-9
    ISSN 1939-747X ; 1939-7291
    ISSN (online) 1939-747X
    ISSN 1939-7291
    DOI 10.1614/IPSM-09-035.1
    Database NAL-Catalogue (AGRICOLA)

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