Cupressaceae

The negative impacts of residential and commercial development on conifers is so severe that it has led to conifer species becoming Critically Endangered. Ironically, the very system put in place to protect biodiversty, such as national parks, can have a negative impact on biodiversity. Here the most detrimental impacts can be from the visiting public by bringing an increased risk of fire and the introduction of harmful pests and diseases. As a result of an explosive growth rates in the human population over the last 50 years there has been a steady drift of people from the city centres into urban areas. It is estimated that 60% of the Earth's population will live in urban areas by 2030. Hence these increasing population densities and mounting development pressures are causing large tracks of land in the immediate surroundings of urban areas undergoing a process of what is known as urbanisation. This phenomenon directly alters forest ecosystems by removing or fragmenting forest cover. It indirectly alters forest ecosystems by modifying hydrology, altering nutrient cycling, modifying disturbance regimes, and changing atmospheric conditions. 

<em>Tetraclinis articulata</em>, Malta

Tetraclinis articulata, Malta© M.Gardner, RBGE

Taxa in the category - Cupressaceae:

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Athrotaxis cupressoides D.Don

Endemic to Tasmania where the main threats are fire, grazing of regeneration and dieback caused by Phytophthora Read full species entry >

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Athrotaxis selaginoides D.Don

One of two Athrotaxis species endemic to Tasmania where historically it has suffered from fire and logging. Today, even with protection, there is a continuing decline due to fire. Read full species entry >

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Callitris oblonga A.Rich. & Rich.

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 >

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Callitris sulcata (Parl.) Schltr.

One of two Callitris species endemic to New Caledonia; it is restricted to a few locations in the south of the main island of Grande Terre where its threatened by fire and logging Read full species entry >

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Calocedrus formosana (Florin) Florin

Endemic to Taiwan where the population has become severely fragmented through logging and forest clearance for agriculture. 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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Calocedrus rupestris Aver.,T.H.Nguyên & P.K.Lôc

Calocedrus rupestris was first described in 2008 from Việt Nam: prior to this Calocedrus trees occurring on limestone karst  were wrongly identified as Calocedrus macrolepis.  In 2011 C. rupestris was discovered in Guangxi. Threats include selective logging for timber, deforestation and forest degradation. Read full species entry >

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Chamaecyparis formosensis Matsum.

Endemic to Taiwan where logging for its valuable wood has been the main cause of decline in its population Read full species entry >

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