Categories · Threats
Conifers which become stressed following habitat disturbance are often out-competed by better adapted native plant species. For example, in Bosnia and Herzegovina regeneration in some populations of Picea omorika is being supressed by native Fagus sylvatica because of being better adapted to colonising disturbed forest areas. In Western USA fire-supression has reduced the ability of Cupressus bakeri (which is fire-dependent) to regenerate, hence it is gradually being replaced by Abies magnifica and A.
concolor. Native mistletoes species of the genera Arceuthobium, Phoradendron and Psittacanthus can have a deterimental affect on conifers in North America and Mexico. These shrubby, aerial parasites, which are bird dispersed or have explosive fruits, cause deformation of the infected stems, growth loss, increased susceptibility to other disease agents or insects, and reduced longevity. Species of Abies, Cupressus and Juniperus are particularly susceptable to infestation especially if stressed by habitat disturbance.
There are 8 taxa in the category – Invasive species, Native 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 >
Cupressus arizonica var. nevadensis
Endemic to the USA in southern California and threatened mainly by 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 >
Cupressus goveniana var. abramsiana
Endemic to California, USA where fire and urbanisation are the mian threats… Read full species entry >
Endemic to the coastal mountain ranges in California, USA. Even though it has a relatively large range, it is threatened by fire… Read full species entry >
Pinus elliottii var. densa
The southern Florida Slash Pine is restrcited to southern Florida where it faces a number of threats such as poor regeneration, disease, hybridisation, rising sea levels and urban development.
… Read full species entry >
Distributed in the Atlantic and Gulf Coastal Plains of southeastern USA where extreme levels of logging have dramatically reduced the population size… Read full species entry >