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Ajouter le résultat dans votre panierManagement of the invasive Nuttall’s pondweed (Elodea nuttallii) in Lough Arrow, a Natura 2000 designated lake in Western Ireland / Darren Garland in Management of biological invasions, 13 (1) (2022)
Titre : Management of the invasive Nuttall’s pondweed (Elodea nuttallii) in Lough Arrow, a Natura 2000 designated lake in Western Ireland Type de document : Imprimé Auteurs : Darren Garland ; William Earle ; Joseph M. Caffrey ; Cian Taylor ; Sara Meehan ; Nicolas Touzet ; Frances Lucy Année de publication : 2022 Article en page(s) : 118-130 Langues : Français (fre) Catégories : [CBNPMP-Thématique] Plantes subspontanées, naturalisées, envahissantes Résumé : A benthic geotextile was used to trial the management of an invasive aquatic macrophyte Nuttall’s pondweed (Elodea nuttallii (Planch.) H. St. John, 1920) in Lough Arrow, a premier trout angling lake in the north-west of Ireland, designated as a Natura 2000 site (Special Area of Conservation (Annex I habitat, “Hard oligo-mesotrophic waters with benthic vegetation of Chara spp.”) and Special Protection Area for birdlife). The aim of this study was to manage E. nuttallii, a relatively recent arrival to this lake, while simultaneously promoting rehabilitation of native charophytes. The trial was carried out in Loughbrickbay, one of the lough’s primary boating launch sites, an area determined as highly infested with E. nuttallii. Two experimental areas covering a total of 800 m² were treated by covering the invasive weed and substrate with jute textile, a single and double layer respectively. The trial was successful in controlling E. nuttallii for both single (P = 0) and double layer treatments (P = 0.002). The treatments applied resulted in a reduction of the mean percentage cover of the invasive species by > 60% for both treatments. Post-treatment mean percentage cover of E. nuttallii did not exceed 6% for either treatment. Furthermore, the mean percentage cover of indigenous charophyte flora present pre-treatment was not significantly impacted by the application of jute in either the single (P = 0.165) or double treatment (P = 0.353). For biosecurity purposes, the treatment areas were strategically positioned in close proximity to the bays pier and slipway. The treated transects were marked with navigational buoys to provide a corridor for boats entering and exiting the lake, which help to contain the invasive within the Natura 2000 site while reducing the spread risk via this pathway to other sites vulnerable to infestation. Lien pérenne : DOI : 10.3391/mbi.2022.13.1.07 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=152448
in Management of biological invasions > 13 (1) (2022) . - 118-130Garland, Darren, Earle, William, Caffrey, Joseph M., Taylor, Cian, Meehan, Sara, Touzet, Nicolas, Lucy, Frances 2022 Management of the invasive Nuttall’s pondweed (Elodea nuttallii) in Lough Arrow, a Natura 2000 designated lake in Western Ireland. Management of biological invasions, 13(1): 118-130.Documents numériques
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Titre : Lessons learnt from large-scale eradication of Australian swamp stonecrop Crassula helmsii in a protected Natura 2000 site Type de document : Imprimé Auteurs : Janneke M.M. (van der) Loop ; Martijn (van de) Loo ; Wouter de Vries ; Laura S. (van) Veenhuisen ; Hein H. (van) Kleef ; Rob S. E. W. Leuven Année de publication : 2022 Article en page(s) : 101-117 Langues : Français (fre) Catégories : [CBNPMP-Thématique] Plantes subspontanées, naturalisées, envahissantes Mots-clés : Crassula helmsii (Kirk) Cockayne, 1907 Résumé : The eradication of the aquatic invasive Australian swamp stonecrop Crassula helmsii in North-western Europe usually fails. This is especially true for areas where this plant species is abundant and wide spread or the probability of re-infestation is high due to hydrological connectivity with other infested surface waters or wetlands. Therefore, the large-scale eradication of this invader is often assumed not to be cost-effective. In 2018, C. helmsii was eradicated in a wetland of 4.5 ha covering interconnected humid dune valleys on the Wadden Island of Terschelling in the Netherlands. The total costs of this large-scale project were estimated to be 1.5 million euro. The applied method was excavation of infested locations and replenishing these areas with clean (uncontaminated by C. helmsii) sand to restore boundary conditions suitable for recovery of the treated habitats in this Natura 2000 site. An eight step approach was implemented to eradicate the invasive plant species. Aftercare consisted of a monitoring program with six-weekly vegetation surveys for early detection of any regrowth of C. helmsii and assessment of the effectiveness of the eradication measures. The eradication of C. helmsii was regarded successful since this fast growing plant species was not observed in the areas of concern during a period of at least two years. The results of a strength, weaknesses, opportunities and threads (SWOT) analysis revealed that the method for eradication of this invasive plant species was effective to secure nature values but also complex, time consuming and costly. Our lessons learnt and recommendations for management will help other nature managers making the right decisions in determining appropriate eradication measures for C. helmsii.
Lien pérenne : DOI : 10.3391/mbi.2022.13.1.06 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=152449
in Management of biological invasions > 13 (1) (2022) . - 101-117Loop, Janneke M.M. (van der), Loo, Martijn (van de), Vries, Wouter de, Veenhuisen, Laura S. (van), Kleef, Hein H. (van), Leuven, Rob S. E. W. 2022 Lessons learnt from large-scale eradication of Australian swamp stonecrop Crassula helmsii in a protected Natura 2000 site. Management of biological invasions, 13(1): 101-117.Documents numériques
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