Categories · Threats
Fire is a natural process that plays a major role in shaping ecosystems and maintaining biodiversity. For example it may determine the distribution of habitats, carbon and nutrient cycles and even water retention properties of soils.
In habitats accustomed to fire and dependent on it, the specific pattern of fire, including how frequently it burns, how hot it burns, and during which season, helps dictate the types of plants found in a given area. Fire exclusion often results in reduced biodiversity and significantly increased vegetation density, leading to an increased risk of catastrophic fire over time. While some conifers have evolved to be fire dependent by having serotinous cones that open and release their seed in response to fire, their populations are so small or fragmented that even natural fires may be catastrophic. This is particularly evident in areas with a Mediterranean climate. It is the introduction of inappropriate fire regimes (frequency, severity, or seasonal timing) that can have the most severe impact.
There are 13 taxa in the category – Fire, Natural:
Distributed in three States of eastern USA but as a result of severe infestation from the Balsam woolly adelgid, only one population remains unaffected… Read full species entry >
A subtropical alpine fir restricted to a few areas in Taiwan. Climate change is likely to have a significant impact on this species. Currently it is assessed as Near Threatened… Read full species entry >
Abies pinsapo var. pinsapo
One of two varieties of the Spanish fir restricted to three areas of southern Spain where in the last 45 years large areas of forest have been lost mainly as a result of fire.… Read full species entry >
Endemic to northeast Mexico where it occurs on steep mountain slopes near the summits or in cool ravines. It is under threat by wildfires.… 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 >
One of 13 species of Araucaria endemic to New Caledonia where it has a restricted distribution and has become Endangered due to mining and fire.… Read full species entry >
Known from nine sites in northern California and south Oregon where fire and the introduction of pests and diseases are major threats… 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 >
Cupressus goveniana var. goveniana
Endemic to California, USA where altered fire regimes and ubanisation are the main threats… Read full species entry >