Fire

Fires may be the result of natural phenomena such as lightning or they may be man-induced. Usually natural fires are an integral part of plant community development and influence such things as soil nutrient availability and biological diversity. In contrast, uncontrolled or wildfires disrupt such processes and can have a catastrophic impacts. The vast majority of wildfires are intentionally set and often occur in conifer forests. In recent years extended droughts, together with the rapidly expanding exploitation of tropical forests and the demand for the conversion of forests to other land uses, have resulted in a dramatic increase in wildfires. 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.

Taxa in the category - Fire:

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Cupressus bakeri Jepson

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 >

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Cupressus dupreziana A.Camus

Represented by the two varieties C. dupreziana var. dupreziana (Algeria) and C. dupreziana var. atlantica (Morocco). Long-lived (2000 years) but their future is threatened by fire, seed collecting and climate change. Read full species entry >

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Cupressus dupreziana var. dupreziana

Native to the Sahara Desert in Algeria where it occupies a narrow strip of about 120km long on the edge of Tassili Plateau. It is Critically Endangered due to grazing and cutting for firewood Read full species entry >

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Cupressus goveniana Gordon

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. abramsiana (C.B.Wolf) Little

Endemic to California, USA where fire and urbanisation are the mian threats 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 >

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Cupressus guadalupensis S.Watson

Endemic to Baja California, Mexico and the border area of California, USA. Threatened by fire and urbanisation. Read full species entry >

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Cupressus guadalupensis var. forbesii (Jeps.) Little

Occurs in Baja California in Mexico and on the USA border where fire is the major threat Read full species entry >

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