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15 cze 2022 · We used MaxEnt to predict range expansion and contraction of invasive giant hogweed. Coldest quarter temperature was the most important constraint on its distribution. Most of its current distribution will be lost under climate change in all scenarios.
Hogweed often grows in riparian areas and seeds can be carried by water, especially during floods. Wind causes dispersal at shorter distances, especially during the winter when seeds are blown across frozen ground.
Heracleum mantegazzianum (giant hogweed) is a herb/ (family Apiaceae) with white flowers and large toothed leaves found in the northwestern ranges of Oregon. It is native to central Asia. It favors grasslands and riparian and bottomland habitat. It reproduces only by seed.
3 lis 2021 · Impacts of giant hogweed may include shading of native species at high densities, and destabilization of ecologically sensitive stream bank habitats when plants die back in the winter (Caffrey 1999; Tiley and Philip 1994). However, the largest impacts are on human health and the safe use of amenity areas.
28 sie 2018 · Over winter periods the plant displays natural die-back, exposing riverbanks to erosion. This is followed by recolonisation in spring through the germination of giant hogweed seeds from a short-term persistent seed bank in the soil in addition to the introduction of new seeds carried downstream.
23 mar 2020 · We illustrate the value of integrated methods (species distribution modelling (SDM), plant population monitoring and questionnaires) for monitoring and assessing invasions of Heracleum mantegazzianum (giant hogweed) over time in Switzerland.
Habitat. Heracleum mantegazzianum in its native areas shows a wide ecological amplitude, occurring in a variety of habitats between 50 and 2000 m altitude, with annual rainfall between 1000 and 2000 mm per annum and continental climate of hot summers and cold winters.
