West Bengal Biodiversity Board

Kolkata, India

West Bengal Biodiversity Board

Kolkata, India
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Roy R.,A.J.C. Bose Indian Botanic Garden | Roy A.,West Bengal Biodiversity Board | Pramanik A.,A.J.C. Bose Indian Botanic Garden
Phytotaxa | Year: 2017

Ardisia blatteri Gamble (1921: 121) is endemic to India and occurs in the southern part of Western Ghats (Dhanasekaran et al. 2016). This species has been considered as ‘Endangered’ in IUCN Red List of Threatened Species (IUCN 2016). The plants are rich in chemical constituents like alkaloids, tannins, saponins, anthraquinones, phenols, terpenoids and flavonoids, coumarins, steroids and phytosteroids and are used in traditional medicines (Dhanasekaran et al. 2016) for curing fever, cough, rheumatism, inflammation and many more ailments. The medicinal properties of this important plant require further research. © 2017 Magnolia Press.


Manna S.,West Bengal Biodiversity Board | Manna S.,Scottish Church College | Ghora T.K.,Government of West Bengal | Roy A.,West Bengal Biodiversity Board
Biodiversitas | Year: 2017

Manna S, Manna S, Ghora TK, Roy A. 2017. Sacred grove as remnant forest: A vegetation analysis. Biodiversitas 18: 899-908. Sacred groves are the remnants of ancient virgin forest sustaining veritable gene pool that have been gained century-long protection through the inherent cultural and religious belief of the ethnic communities. These important local biodiversity hotspots, representing the climatic climax of regional plant communities, are gradually being under threat by natural disturbances or anthropopression. Thus vegetation analysis of sacred groves is very important to find out their lineage to nearby existing forest. To reach the goal, significant plant compositional similarity between the sacred groves with changing distance was measured by 2X2 contingency analysis from presence/absence data matrix of major tree species (MTS) and major climbers and liana species (MCLS) of 13 sacred groves of a particular soil zone. The observation reveals a significant gradual decrease in chi-square value with the increasing distance between the groves. Jaccard and Sorensen Coefficients for community similarity also reflect an inverse relationship of any two groves with increasing distance. Agglomeration Hierarchical Clustering (AHC) depicts that all the 74 families are found to be clustered into three significant groups. In respect of Multiple Correspondence among sacred groves, symmetric and asymmetric plots indicate that there two distinct groups have theirs within similarities among families in the groves. The plexus diagram shows a confluence zone of all the 13 sacred groves which might be the maximum probable area of an ancient riverine wood forest. The study would be helpful in restoration of threatened/degraded sacred groves and also guide in the preparation of management plan for the conservation of these relic forest fragments. © 2017, Society for Indonesian Biodiversity. All rights reserved.


Khatua S.,University of Calcutta | Paul S.,University of Calcutta | Chatterjee A.,University of Calcutta | Ray D.,West Bengal Biodiversity Board | And 2 more authors.
Journal of Chemical and Pharmaceutical Research | Year: 2013

Russula delica, a wild edible mushroom, is commonly available at lateritic zone of West Bengal. The macrofungus was subjected to ethanolic extract and its antioxidant properties using multimechanistic assays were studied. The extract exhibited excellent activities in superoxide radical scavenging (EC50= 0.465 mg/ml), reducing power (EC50= 0.56 mg/ml) and chelating ability of ferrous ion assays (EC50= 0.59 mg/ml) than inhibition of β-carotene bleaching (EC50= 0.965 mg/ml) and DPPH radical scavenging methods (EC50= 1.2 mg/ml). Total polyphenols were the major naturally occurring antioxidant component found in the extract, whereas ascorbic acid was present in vestigial amount. Antioxidant activity in all the assays were established to be highly correlated with total phenols (R2= 0.987) and flavonoids (R2= 0.953) implying that the polyphenols was partly responsible for the antioxidant activities. Thus the study scientifically demonstrated use of R. delica as a potential source of natural antioxidant.


Pradhan P.,University of Calcutta | Dutta A.K.,University of Calcutta | Roy A.,West Bengal Biodiversity Board | Basu S.K.,University of Lethbridge | Acharya K.,University of Calcutta
Biodiversity | Year: 2013

The diversity of macrofungi in the lateritic region of West Bengal was explored and 120 species, one subgenus and a variety, having eight ecological functions, were found to grow among three types of habitats, i.e. natural forests, plantation forests and villages. Yate's corrected chi-square (χ2) test statistic was performed upon the 2 × 2 table (contingency table) and testing the null hypotheses of independence of observed cell frequencies of the presence/absence of a species in a given habitat type. Various degrees of specificities of macrofungi to their habitats were observed, i.e. Amanita vaginata, Astraeus hygrometricus, Laccaria laccata, Lactarius zonarius, Porphyrellus malaccensis, Russula brevipes, Russula delica, Russula emetica and Russula laurocerasi were absolutely specific for natural forests; Pisolithus arhizus and Ramaria fumigata were absolutely specific for plantation forests; Auricularia auricula, Schizophyllum commune and Termitomyces clypeatus (only association coefficient 100%) were found to absolutely specific for village habitat. MS Excel-based formulas for calculation of association/specificity of species to habitat and species to species as well as other diversity indices are provided. Local and tribal populations used 19 species of macrofungi during their fruiting period, of which 17 had culinary values and four were locally considered medicinal. This study is a first of its kind, and has various applications to allied disciplines in understanding diversity, ecology and biological prospects of the macrofungal realm. © 2013 Copyright Biodiversity Conservancy International.


Pradhan P.,University of Calcutta | Dutta A.K.,University of Calcutta | Roy A.,West Bengal Biodiversity Board | Basu S.K.,University of Lethbridge | Acharya K.,University of Calcutta
Biodiversity | Year: 2012

Macrofungi are broad in diversity and play an important role in sustaining ecosystems. However, the quantity and quality of their habitat is decreasing and the threat of extinction looms over the remaining 95% of the world's undiscovered fungal species. There is an urgent need for inventorisation, monitoring and conservation of macrofungi and the habitats supporting their growth. This paper focuses on the species richness, assemblage and spatial ecology of the macrofungi whose lifecycles are intricately woven with natural Shorea robusta forests in the lateritic region of West Bengal, India. Decreasing soil productivity, poor regeneration of Shorea seedlings and subsequent habitat degradation for macrofungi are a prime cause of concern. © 2012 Copyright Taylor and Francis Group, LLC.


Dasgupta A.,University of Calcutta | Ray D.,West Bengal Biodiversity Board | Chatterjee A.,University of Calcutta | Roy A.,West Bengal Biodiversity Board | Acharya K.,University of Calcutta
Research Journal of Pharmaceutical, Biological and Chemical Sciences | Year: 2014

Polyphenol-rich fraction from edible mushroom, Russula albonigra, was tested for total phenol, flavonoid, β-carotene, lycopene and ascorbic acid and in vitro antioxidant activity in terms of DPPH radical scavenging and chelating effect of ferrous ion, reducing power and total antioxidant capacity assay. Findings showed that EC50 values were below 1 mg/ml except reducing power test. The extract exhibited 50% reducing power at only 1.2 mg/ml concentration. Estimated putative antioxidant components are in order of phenol > flavonoids > β-carotene > ascorbic acid > lycopene. Results imply that R. albonigra can be a potential source of natural antioxidant which may be used as food supplement to treat various oxidative stress related diseases.


Dasgupta A.,University of Calcutta | Ray D.,West Bengal Biodiversity Board | Chatterjee A.,University of Calcutta | Roy A.,West Bengal Biodiversity Board | Acharya K.,University of Calcutta
Journal of Chemical and Pharmaceutical Research | Year: 2014

Ethanolic fraction from edible mushroom, Russula albonigra, was tested for in vitro antioxidant activity, namely, DPPH (2,2-diphenyl-1-picrylhydrazyl) radical scavenging activity, chelating effect on ferrous ions, reducing power and total antioxidant capacity assay and a quantitative estimation of putative antioxidant components like total phenol, flavonoid, β-carotene, lycopene and ascorbic acid was carried out. Findings showed that EC50 values were below 1 mg /ml except DPPH radical scavenging test. The extract exhibited 50% DPPH radical scavenging activity at only 1.8 mg /ml concentration. Estimated putative antioxidant components was in order of phenol > flavonoids > ascorbic acid > β-carotene> lycopene. Result implies that Russula albonigra can be a potential source of natural antioxidant which may be used as food suplement to treat various oxidative stress related diseases.


Ghosh H.S.,University of Calcutta | Roy S.,University of Calcutta | Sanyal A.K.,West Bengal Biodiversity Board | Misra K.K.,University of Calcutta
International Journal of Acarology | Year: 2016

Microscopic anatomy of Haller’s organ of snake inhabiting tick, Amblyomma gervaisi and Amblyomma helvolum is described. The Haller’s organ consists of two parts, the anterior pit and the proximal capsule. The surface ultrastructural studies by using scanning electron microscope (SEM) on this olfactory organ of both the species revealed some species specific features like slit pattern. Anterior pit consists of six sensilla in A. gervaisi and four in A. helvolum. These sensilla at their base region are connected to each other by a channel. Transmission electron microscope (TEM) observation of this organ of A. gervaisi shows that the lumen of each sensilla and the channel are associated with muscles and bunches of nerve fibres, respectively. Proximal capsule consists of few pyramid shaped elevated regions, each of which at their ventral surface bears cluster of one bipolar sensory cell guarded by two lateral supportive cells. Cytomorphology of the sensory cell exhibit distinct nucleus, mitochondria, Golgi bodies, rough endoplasmic reticulum, smooth endoplasmic reticulum, ribosomes, membrane bound vesicles, microvilli and intercellular junction. Associated neurons and nerve extensions are clearly visible under TEM. Details of the SEM and TEM observations are described. © 2016 Informa UK Limited, trading as Taylor & Francis Group


Manna S.,West Bengal Biodiversity Board | Roy A.,West Bengal Biodiversity Board
Journal of Forest Research | Year: 2014

Dry deciduous forests of the eastern lateritic part of India are a typical case where forest valuation is yet to be integrated with the non-timber forest products like wild edible mushrooms (WEMs), which have a wide use in subsistence and cash income. A detailed accounting of the production and utilization of WEMs harvested from that region was made to highlight the economic worth of WEMs to the Santal community of this region. The WEMs production in the forest was in a polynomial pattern during the monsoon period. The net present value of revenues from WEMs was estimated to be contributing 9.83 and 10.29 % of total annual income of a Santal family of the Choupahari and Gonpur forests, respectively. The ecological footprint of the Santal communities on WEMs was higher in the forest area which was closer to the local markets than did the distant ones. Forest areas of the eastern lateritic part of India have a strong potentiality to produce WEMs that may be helpful for socio-economic upliftment of local tribal communities through the development of entrepreneurship and policy making. © 2013 The Japanese Forest Society and Springer Japan.


Monotropoideae is a mycoheterotrophic subfamily of Ericaceae. Its members are highly specific to a particular fungal family, which has attributed to the rarity and limited distribution of Monotropoideae. In the past two decades, there are considerable developments in understanding their biology and biogeography, among which, the distribution of Monotropa uniflora L. and M. hypopitys L. has been extensively studied. In this contribution, Ecological Niche Modeling of M. uniflora has been conducted to test its earlier proposed distribution in South Asia, to test the spatial scale of the said proposal, to test its potential distribution as a surrogate for range of Monotropoideae in South Asia and to prioritize conservation areas for M. uniflora in the region. The model was built with five occurrence details of the rare plant M. uniflora in Western and Eastern Himalaya, in relation to 19 bioclimatic explanatory variables, performed in MaxEnt. The results show the good performance of the model with the training AUC of 0.994. 1,50,316 square Km. of suitable areas have been predicted for the growth of M. uniflora (IHS ≥0.5) in South Asia, many areas of which is in line with earlier distributional reports. The bioclimatic variables are able to predict and suitably justify the spatial distribution of M. uniflora. The predicted range of the species could be established for potential distribution of other Asian Monotropoids like Monotropastrum and Cheilotheca. © 2015 Society for Indonesian Biodiversity. All rights reserved.

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