Residential and commercial development

The NW North America Threatened Conifer Region extends from British Columbia in Canada down the Pacific coast as far south as San Francisco and with a southern inland limit of Fresno. The western slopes of the Rocky Mountains form the eastern limit. It encompasses major mountain ranges including the Cascades, Sierra Nevada and the Transverse Ranges in southern California. It also includes the Klamath-Siskiyou region which bridges the coastal mountain ranges of California and Oregon and the Pacific Coast Ranges. The Region is one of the most diverse areas in the world for temperate conifers and is especially famous for having some of the most enormous conifers in the world, namely Sequoia sempervirens and Sequoiadendron giganteum. Much of the area is included in the Biodiversity Hotspot of the Californian Floristic Province and is characterised by cool, wet  winters and hot, dry summers with many conifers in the coastal forests reliant on persistent summer fog. Threats in this Region include fragmentation of forests and reductions in population sizes due to historic logging and forestry management practices that favour particular species, urbanisation, grazing and the introduction of exotic pests and diseases. Many years of fire suppression and other management practices have caused high-intensity fires which has led to the loss of large areas of conifer forests.

Taxa in the category - Residential and commercial development:

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Abies delavayi subsp. fansipanensis (Q.P.Xiang) Rushforth

This subspecies, described in 1997, is restricted to a single mountain in Northern Việt Nam. The main threats are its small population size and restricted distribution which make it potentially susceptible to stochastic events.  Read full species entry >

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Abies pinsapo Boiss.

The Spanish fir has two subspecies distributed in southern Spain and northern Morocco where threats include fire, grazing and climate change. Read full species entry >

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Abies pinsapo var. marocana (Trabut) Ceballos & Bolanos

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 >

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Amentotaxus argotaenia (Hance) Pilg

A widespread species that only ever occurs in small isolated populations. It is currently assessed as Near Threatened due to range wide deforestation. Read full species entry >

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Amentotaxus assamica D.K.Ferguson

Poorly known species endemic to India where threats include forest clearance for agriculture, logging, firewood collection and infrastructure development Read full species entry >

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Calocedrus macrolepis Kurz

A widespread species that has been exploited for timber and resin. Difficulties in estimating the extent of its decline and a lack of information about its staus is some parts of its range have resulted in an assessment of Near Threatened. Read full species entry >

Foliage
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Cedrus libani A.Rich.

Native to mountains adjacent to the north-eastern Mediterranean coast in Turkey, Syria and Lebanon. Threats include pathogens, fire, urbanisation, selective felling, activities associated with winter sports and grazing. Read full species entry >

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Cephalotaxus hainanensis H.L.Li

Restricted to the island of Hainan, China where the main threat has been exploitation of the bark and leaves for the valuable medicinal extracts. Habitat conversion and deforestation are now the most current threats Read full species entry >

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