Categories · Threats
Encroachment into natural habitats by invasive non-native plants species is a very serious problem, although this is not a common threat to conifers and their habitats. Oceanic Island ecosystems are particularly vulnerable to invasive species because the native populations are often small and have evolved in isolation without adaptation to high levels of competition.
On Jamaica, where many non-native species, such as the Australian Pittosporum undulatum and the Himalayan Hedychium gardnerianum, pose a formidable threat to the small population of the endemic Podocarpus urbanii in the Blue Mountain and John Crow National Park and to Juniperus brevifolia in the Azores. Ironically, non-native conifers can be the perpetrator, for example, Pseudotsuga menziesii is a problem in part of the range of Austrocedrus chilensis in Argentina. Perhaps the worst culprit is Pinus radiata which ironically, is threatened in the wild in California, but as a result of breeding programmes to select the healthiest and most rapidly growing clones, these trees can be seriously invasive. This is particularly the case in southern Chile where many remnant coastal habitats with Podocarpus salignus are now extremely threatened.
There are 19 taxa in the category – Invasive species, Introduced plants:
Endemic to four mountains in South Korea, the population suffers a range of threats including climate change, introduced pathogens and invasive native and non-native plants… Read full species entry >
Abies pinsapo var. marocana
The Moroccan fir is restricted to two small forests in the Rif Mountains of northern Morocco where over a period of 60 years it has suffered a 70% decline.… Read full species entry >
Endemic to southern Argentina and Chile where it mainly occurs in the Andes. Threats include fire, grazing and encroachment from commercial plantations of exotic species.… Read full species entry >
Endemic to Australia (Norfolk Island Group) where historical logging and forest clearance significantly reduced the population. Today the main threats relate to the impacts of invasive non-native species.… Read full species entry >
A genus of a single species endemic to Argentina and Chile where it is relatively widely distribution. There has been a significant reduction in its population due to Phytophthora austrocedrae.
… Read full species entry >
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A rare and potentially threatened species of Eucalyptus woodland in southeast Queensland and northern New South Wales.… Read full species entry >
Endemic to Australia where it occurs on the mainland and Tasmania. Threats include forest clearance, fire, grazing, invasive species and soil erosion.… Read full species entry >
Endemic to California, USA where it is facing a range of threats including changes to fire regimes, urbanisation, invasive non-native plants and agriculture.… Read full species entry >
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Cupressus goveniana var. goveniana
Endemic to California, USA where altered fire regimes and ubanisation are the main threats … Read full species entry >