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Bhasker Joshi (2011): Ecology and Medicinal Uses of Helminthostachys zeylanica (L.) Hook. “An endangered flora of India” reported at Foothills of Kumaun Himalaya (Kashipur), Uttarakhand. Researcher, 3(4):51-54.
... The variation showed in both studies might be due to the different developmental stages of the plants (Gupta et al., 2005). By considering the importance of K to the health, high concentration was recommended in dietary intake for adults as compared to other elements and suggested to be at 4700 mg/day (Joshi, 2011;Anavi, 2013). K is important for heart, bone, and kidney hence an adequate intake of this mineral has potential to reduce the risks of coronary heart disease, stroke, and formation of kidney stone (Anavi, 2013;Weaver, 2013). ...
... Pearson correlation coefficient for interspecific covariance indicated that there was a strong positive correlation in the density value for Helminthostachys zeylanica and Barringtonia acutangula (at 5% probability level) (Table 3). Less disturbance, moist shady condition by the canopy of large Barringtonia acutangula trees and claiy humus rich substratum covered by dense population of Vetiveria zizanioides created a fabulous microclimate for better population size of Helminthostachys zeylanica with maximum Ab, F%, RD, RF in site-2 unlike site-1 (Joshi 2011; Sundari et al. 2012). Yearly monsoon sedimentation in the habitat is also helpful for its successful establishment (Goswami 2007). ...
For a long period, populations of Helminthostachys zeylanica (L.) Hook. have mostly been restricted in few geographic ranges due to alternation of their actual / potential habitat conditions. To find out the potential habitat of Helminthostachys zeylanica it is significant to identify their phytoassociates as well as the nature of association. Apart from the habitat and community analysis, present study also highlighted a strong positive correlation in association of Helminthostachys zeylanica existed plants of the forest. Present study depict some strong possibilities of true positive association between Vetiveria zizanioides (L.) Nash, Barringtonia acutangula with other co-(L.) Gaertn. and Antidesma acidum Retz., and also a strong negative correlation in association with
Eucalyptus globulus correlation coefficient for interspecific covariance support there was a strong positive correlation in the density value for Helminthostachys zeylanica Labill. Pearson and Barringtonia acutangula. These findings depict the importance of presence of Vetiveria zizanioides, Barringtonia acutangula establishment and increase of population size of Helminthostachys zeylanica. in the present habitat for establishment and increase of population size of Helminthostachys zeylanica.
Assessment of population structure on the basis of density, distribution and diversity-dominance pattern was carried out in Kedarnath Wildlife Sanctuary, Uttarakhand, India. Besides, distribution pattern, population structure and conservation status of ten rare and endangered medicinal plants were also evaluated. Different habitat types for these species were identified and sampled using vertical belt transects. Out of ten habitats identified, distribution of most of the species was found to be restricted in 2-3 habitats. However, Picrorhiza kurrooa showed wide distribution in six habitats, while Swertia chirayita was restricted to a single habitat. On the basis of density, occurrence in different habitats and level of pressure, we have grouped them into two broad categories: (i) restricted distribution and high pressure, and (ii) well distributed and low pressure. Accordingly, implication of conservation and management strategies has been suggested.
Biodiversity provides to humankind enormous direct economic benefits, an array of indirect essential services through natural ecosystems, and plays a prominent role in modulating ecosystem function and stability. Biodiversity is not uniformly distributed on the earth, and could comprise 5 to more than 50 million species. The current rates of species extinction are 1000-10,000 times higher than the background rate of 10-7 species/species year inferred from fossil record. Today we seem to be losing two to five species per hour from tropical forests alone. This amounts to a loss of 16 m populations per year or 1800 populations per hour. The anticipated magnitude of species loss has drawn worldwide attention, fueling attempts to rapidly assess and conserve biodiversity. Key processes of speciation, endemism, coexistence, extinction, and differential vulnerability of taxa and habitats are not adequately understood. Accuracy of estimates of the total number of resident species and current rates of extinction remains undetermined, and the impact of species deletions on ecosystem function and stability is still a subject of debate among ecologists. In its own right, the study of biodiversity is assuming the status of an interdisciplinary science with a growing body of concepts, testable hypotheses, exacting methodologies, and internalization of aspects of human sociology.
Medicinal uses of 61 pteridophyte species belongs to 31 families used by tribals of the Western Ghats of India in their traditional methods of treatment of various diseases and ailments like stomach disorders, poisonous bites, rheumatics, cough, asthma fever and diabetes, etc. are presented.
The oldest remedies known to humankind are herbal medicines. India is known worldwide for its Ayurvedic treatments. Euphorbia hirta is often used traditionally as medicine. Euphorbia hirta L. belongs to family Euphorbiaceae. It is an annual herb present on the roadside throughout the country. The tribal societies of different region and the vangujjars have developed their own indigenous medicinal system. Euphorbia hirta L. is known to have medicinal, cultural and ethnobotanical uses. [Bhasker Joshi.
The ethnomedicinal value of ferns, used by the tribals of India such as Baiga, Gond, Korawa, Kanwar, Tanwar, Manjhwar, Oraon, Manjhi, Dhanwar, Binjihwar, Agariya, Pando and other people of the world is focused on in the present paper. The tribals frequently use ferns as medicines for the cure of various ailments. The information gathered from them (and also collected from other sources) is herein described.
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