Population assessment and species distribution modeling of Paris polyphylla in Sikkim Himalaya, India

Lepcha, Dawa Lhendup; Pradhan, Aditya; Chhetri, Dhani Raj

doi:10.13057/biodiv/d200508

Cited by 10 publications

(6 citation statements)

References 21 publications

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“…finding is equally supported by the results of other workers [88][89][90] who also modelled the dominant role of temperature related climatic variables in governing the distribution of medicinal plants in the north western Himalaya. Variability of precipitation pattern also acts as a significant parameter that influences the species distribution in the Himalaya [91].…”

Section: Plos Onesupporting

confidence: 85%

Ecological assessment and environmental niche modelling of Himalayan rhubarb (Rheum webbianum Royle) in northwest Himalaya

et al. 2021

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In an era of anthropocene, threatened and endemic species with small population sizes and habitat specialists experience a greater global conservation concern in view of being at higher risk of extinction. Predicting and plotting appropriate potential habitats for such species is a rational method for monitoring and restoring their dwindling populations in expected territories. Ecological niche modelling (ENM) coalesces species existence sites with environmental raster layers to construct models that describe possible distributions of plant species. The present study is aimed to study the potential distribution and cultivation hotspots for reintroducing the high value, vulnerable medicinal herb (Rheum webbianum) in the Union territories of Jammu and Kashmir and Ladakh using population attributes and ecological niche modelling approach. Sixty-three populations inventoried from twenty-eight areas display a significant change in the phytosociological attributes on account of various anthropogenic threats. The current potential habitats coincide with actual distribution records and the mean value of Area Under Curve (AUC) was 0.98 and the line of predicted omission was almost adjacent to omission in training samples, thus validating a robustness of the model. The potential habitat suitability map based on the current climatic conditions predicted a total of 103760 km2 as suitable area for the growth of Rheum webbianum. Under the future climatic conditions, there is a significant reduction in the habitat suitability ranging from -78531.34 Km2 (RCP 4.5 for 2050) to -77325.81 (RCP 8.5 for 2070). Furthermore, there is a slight increase in the suitable habitats under future climatic conditions, ranging from +21.99 Km2 under RCP 8.5 (2050) to +3.14 Km2 under RCP 4.5 (2070). The Jackknife tests indicated Precipitation of Driest Month (BIO14) as the most contributing climatic variable in governing the distribution of R. webbianum. Therefore, scientifically sound management strategies are urgently needed to save whatever populations are left in-situ to protect this species from getting extinct. Present results can be used by conservationists for mitigating the biodiversity decline and exploring undocumented populations of R. webbianum on one hand and by policymakers in implementing the policy of conservation of species with specific habitat requirements by launching species recovery programmes in future on the other.

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Section: Plos Onesupporting

confidence: 85%

Ecological assessment and environmental niche modelling of Himalayan rhubarb (Rheum webbianum Royle) in northwest Himalaya

et al. 2021

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“…Te results showed that at a 10 μg/ml concentration, more than 50% inhibition in cell growth occurs [62]. Lepcha et al [40] reported a high concentration of favonoids and phenolic compounds along with DPPH and ABTS scavenging activity in the P. polyphylla plant from a higher altitude. Furthermore, the cytotoxic efect of the extract was determined on three cancer cell lines, HeLa, HepG2, and PC3, by MTT assay, which showed dose-dependent inhibition of HeLa cell growth and moderate inhibition in HepG2 and PC3 cell growth.…”

Section: Pharmacologymentioning

confidence: 98%

“…Recent studies on the distribution and abundance of P. polyphylla indicate that its availability in nature is very low compared to its associated species from the same habitat [37]. However, only some studies on the ecological status of P. polyphylla have been performed in various parts of the Himalayas in the last few years [38][39][40][41]. Most of this ecological research is restricted to Nepal only.…”

Section: Ecological Status: Habitat and Occurrencementioning

confidence: 99%

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Traditional Uses, Active Ingredients, and Biological Activities of Paris polyphylla Smith: A Comprehensive Review of an Important Himalayan Medicinal Plant

Rawat

Pandey

Rawat

et al. 2023

Journal of Chemistry

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Paris polyphylla Smith (family: Melanthiaceae), a high-value medicinal herb endemic to the Himalayan region, has drawn much attention recently due to its immense use in the traditional healthcare system since ancient times. In the present review, an extensive database on P. polyphylla was systematically searched from databases such as Medline/PubMed, Scopus, the Web of Science, and the online service E-library.ru and SCImago (https://www.scimagojr.com/). Information on species, ecology, distribution, trade, ethnopharmacology, pharmacology, biotechnology, and molecular biology was gathered from 1979 to 2023 using 116 research publications. Major steroidal saponins such as Paris saponin I, V, VI, VII, and H have been found substantially effective in anticancer activity, abnormal uterine bleeding, dysfunctional uterine bleeding, and menorrhagia. Traditional breeding and propagation techniques cannot keep up with the world’s growing demand for herbal drugs. Therefore, it is critically necessary to take conservation measures and develop novel techniques for growing and cultivating this economically significant and highly valuable therapeutic herb. The advanced biotechnological approaches like micropropagation and genetic analysis introduced long back are either rare or lacking in the case of P. polyphylla. It contains a wealth of information that will serve as a baseline data source for various stakeholders, researchers working on various research aspects, and policymakers to define appropriate utilization and conservation plans for a high-value commercial medicinal plant called P. polyphylla. The review provides an updated overview and critical assessment of secondary data regarding the past and recent applications and interventions of P. polyphylla.

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“…Wildfires are currently one of the most important environmental problems as they cause disturbances in ecosystems generating environmental, economic and social costs (Viana-Soto et al 2017). In recent years, Geographic Information System (GIS) techniques are more and more used for biodiversity conservation and human impact issues (Dominy and Duncan 2002;Foody 2008;Iannella et al 2016Iannella et al , 2019aD'Alessandro et al 2018;Di Musciano et al 2020), and revealed interesting results especially when coupled with ecological modelling (Santos et al 2006;Iannella et al 2018;Cerasoli et al 2019;Iannella et al 2019b;Lepcha et al 2019) and remote sensing applications (Kerr and Ostrovsky 2003;Pettorelli et al 2014Pettorelli et al , 2016Wang and Gamon 2019).…”

Section: Introductionmentioning

confidence: 99%

The potentiality of Sentinel-2 to assess the effect of fire events on Mediterranean mountain vegetation

Simone¹,

Musciano²,

Cecco³

et al. 2020

Plant Sociology

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Wildfires are currently one of the most important environmental problems, as they cause disturbance in ecosystems generating environmental, economic and social costs. The Sentinel-2 from Copernicus Program (Sentinel satellites) offers a great tool for post-fire monitoring. The main objective of this study is to evaluate the potential of Sentinel-2 in a peculiar mountainous landscape by measuring and identifying the burned areas and monitor the short-term response of the vegetation in different ‘burn severity’ classes. A Sentinel-2 dataset was created, and pre-processing operations were performed. Relativized Burn Ratio (RBR) was calculated to identify ‘burn scar’ and discriminate the ‘burn severity’ classes. A two-year monitoring was carried out with areas identified based on different severity classes, using Normalized Difference Vegetation Index (NDVI) to investigate the short-term vegetation dynamics of the burned habitats; habitats refer to Annex I of the European Directive 92/43/EEC. The study area is located in ‘Campo Imperatore’ within the Gran Sasso – Monti della Laga National Park (central Italy). The first important result was the identification and quantification of the area affected by fire. The RBR allowed us to identify even the less damaged habitats with high accuracy. The survey highlighted the importance of these Open-source tools for qualitative and quantitative evaluation of fires and the short-term assessment of vegetation recovery dynamics. The information gathered by this type of monitoring can be used by decision-makers both for emergency management and for possible environmental restoration of the burned areas.

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Population assessment and species distribution modeling of Paris polyphylla in Sikkim Himalaya, India

Cited by 10 publications

References 21 publications

Ecological assessment and environmental niche modelling of Himalayan rhubarb (Rheum webbianum Royle) in northwest Himalaya

Ecological assessment and environmental niche modelling of Himalayan rhubarb (Rheum webbianum Royle) in northwest Himalaya

Traditional Uses, Active Ingredients, and Biological Activities of Paris polyphylla Smith: A Comprehensive Review of an Important Himalayan Medicinal Plant

The potentiality of Sentinel-2 to assess the effect of fire events on Mediterranean mountain vegetation

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