Hedychium gardnerianum (herbacée)

Écologie Distribution Gestion Impacts Références et liens Contacts

Étude de cas sur les impacts New Zealand   Compétition: Dense rhizomes prevent growth of native flora. Coromandel (New Zealand)   Compétition: Dense rhizomes prevent growth of native flora. Coromandel (New Zealand)   Modification du cycle des nutriments: Alters nutrient cycling. Perturbation physique: Alters physical processes such as erosion and stream flow. Auckland Region (New Zealand)   Compétition: Dense rhizomes prevent growth of native flora. Auckland Region (New Zealand)   Modification du cycle des nutriments: Alters nutrient cycling. Perturbation physique: Alters physical processes such as erosion and stream flow. Bay of Plenty Region (New Zealand)   Compétition: Forms dense colonies in native forests, smothering young native plants as well as preventing native seedling establishment. This leads to the alteration of both the function and structure of native forest and in some instances results in the total death of the forest. Northland Region (New Zealand)   Compétition: Dense rhizomes prevent growth of native flora. Northland Region (New Zealand)   Modification du cycle des nutriments: Alters nutrient cycling. Perturbation physique: Alters physical processes such as erosion and stream flow. Taranaki Region (New Zealand)   Modification du cycle des nutriments: Alters nutrient cycling. Perturbation physique: Alters physical processes such as erosion and stream flow. Waikato Region (New Zealand)   Modification du cycle des nutriments: Alters nutrient cycling. Perturbation physique: Alters physical processes such as erosion and stream flow. Wellington Region (New Zealand)   Modification du cycle des nutriments: Alters nutrient cycling. Perturbation physique: Alters physical processes such as erosion and stream flow. Marlborough Region (New Zealand)   Modification du cycle des nutriments: Alters nutrient cycling. Perturbation physique: Alters physical processes such as erosion and stream flow. Tauranga (New Zealand)   Modification du cycle des nutriments: Alters nutrient cycling. Perturbation physique: Alters physical processes such as erosion and stream flow. Buller District (New Zealand)   Modification du cycle des nutriments: Alters nutrient cycling. Perturbation physique: Alters physical processes such as erosion and stream flow. Azores (Portugal)   Altération d'habitat: The impacts of the native forest is almost complete replacement of the understory and interference with the recruitment of canopy species. Conteira (H. gardnerianum) is also invading higher altitude grassland communities. Économique/Subsistance: Conteira (H. gardnerianum) causes problems for forestry operations due to the density levels. Reunion (La Reunion)     Compétition: Dans les sites envahis par Hedychium gardnerianum, la régénération des plantes indigènes est significativement diminuée (Lavergne, 2005). Il a été établi qu'une couverture de H. gardnerianum absorbe jusqu'à 95% du flux lumineux (Lavergne et al., 2005).