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International Journal of
Ecology and Environmental Sciences
ARCHIVES
VOL. 4, ISSUE 3 (2022)
Distribution of Shorea roxburghii G. don (Dipterocarpaceae) in tropical dry deciduous forests of Tumakuru district, Karnataka
Authors
Mouna S, Kotresha K
Abstract
Shorea roxburghii G. Don is also called the lac tree, and the lac insect is propagated on it and the tree species is endemic to peninsular India. Besides, a kind of dammar is obtained from the tree. Devarayanadurga reserve forest hosts ‘Shorea’ groves (SG) with Shorea roxburghii species in single spot with 8 large trees. Shorea roxburghii G. Don was previously listed as an Endangered (EN) species in 1998 but now it is listed as Vulnerable (VU) species in the IUCN Red List of Threatened Species 2017. The tree is prone to timber logging and threatened due to habitat loss as forests are cleared for agricultural purposes. The dispersal of winged fruits takes place much more efficiently by wind since the forest is of the open, seasonal, dry deciduous type. The function of a pollination system involving both wind and insects as vectors of pollen transfer is referred to as ‘ambophily’ and hence S. roxburghii is functionally ambophilous. Flowering is for a very short period only. Seeds mature quickly and seed dormancy is absent. This species is recorded from protected areas only. Hence this tree species must be conserved in ex situ conservation, harvesting should be monitored to reduce population decline. Newer and even more effective propagation methods need to be designed to increase the population in natural habitats and forestry.
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Pages:125-128
How to cite this article:
Mouna S, Kotresha K "Distribution of <em>Shorea roxburghii </em>G. don (Dipterocarpaceae) in tropical dry deciduous forests of Tumakuru district, Karnataka". International Journal of Ecology and Environmental Sciences, Vol 4, Issue 3, 2022, Pages 125-128
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