Distribution pattern of dominant invasive alien plants in forests of Kumaon region in West Himalaya

Ravi Pathak, Vikram S. Negi, Anil Kumar Yadava, I D Bhatt


Present study is an attempt to understand the distribution pattern of five dominant invasive alien plants in forests of the Hat-Kalika watershed in Pithoragarh district of Uttarakhand, Kumaon Himalaya. The results of the study revealed that among selected five invasive alien plants, only Ageratina adenophora was present in all studied forests with its highest relative density (48%) and relative abundance (22%) in Banj-oak dominated forest. Lantana camara was present in lower elevation forests i.e. Sal and Sal-Pine dominated forest in the region, with maximum relative density (51%) in Sal forest. Bidens pilosa, Erigeron karvinskianus, and Oxalis corniculata showed their highest relative density in Sal-Pine dominated, Banj-Oak, and Mixed broadleaved & conifer forest, respectively. All the species preferred high and medium level of disturbance in the studied forests. The results of the study concludes that A. adenophora, which formed dense populations in all studied forests should be given special attention, to control further infestation of the species in natural forests of the region. Study found that many native plant species have density close to that of invasive alien species. Therefore, these native species should be used to restore the degraded forest areas after attempting eradication of invasive alien plant species, for better forest management.


Alien plants; Disturbance; Invasive plants; Kumaon Himalaya; Plant invasion


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