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16 Result(s)
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Vertika Shukla
Atmospheric Protection/Air Quality Control/Air Pollution
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Article
Profiling of heavy metal and pesticide residues in medicinal plants
Application of medicinal plant to cure ailments has been practiced by several civilizations. Nowadays, contamination of heavy metals and pesticide residues in medicinal plant is a serious concern, due to toxic...
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Article
Ecological implication of variation in the secondary metabolites in Parmelioid lichens with respect to altitude
Lichens are known to synthesize a variety of secondary metabolites having multifunctional activity in response to external environmental condition. Two common lichen extrolites, atranorin and salazinic acid, a...
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Article
Physiological and genetic effects of chromium (+VI) on toxitolerant lichen species, Pyxine cocoes
Chromium is a highly toxic non-essential metal, which causes a variety of metabolic activities in plants. Pyxine cocoes a well known toxitolerant lichen species was considered to evaluate the possible physiologic...
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Article
Selection of suitable lichen bioindicator species for monitoring climatic variability in the Himalaya
Interspecific comparison in metals and PAHs profile in three lichen species, Flavoparmelia caperata, Phaeophyscia hispidula and Pyxine sorediata, were studied in different altitudinal gradients of the Western Him...
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Article
Spatial Distribution of Metallic Content in Himalayan Ecosystem Monitored Using Lichens
Evaluation of variation in the concentration of heavy metal provides vital information about the spatial behavior of the metals affecting the air quality. In the present study, lichen samples of the species Pyxin...
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Book
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Chapter
Management and Conservational Approaches
Since lichens are widely known for their high sensitivity towards environmental disturbances, both natural and human origin. Therefore, environmental changes result in alteration of habitats and ecosystems at ...
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Chapter
Secondary Metabolites and Its Isolation and Characterisation
Secondary metabolites are known to protect lichens against increasing environmental stresses such as light exposure, water potential changes, microbial and herbivore interactions and other changes associated w...
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Chapter
Lichen Diversity in Different Lichenogeographical Regions of India
India is a megadiversity region having rich lichen diversity of 2,300 species belonging to 305 genera and 74 families, collected from different regions of the country. Owing to its vast geographical area and v...
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Chapter
Introduction
Lichens are composite organisms comprised of a fungus and one or more algae living together in symbiotic association in which the algal partner produces essential nutrients for the fungal partner through photo...
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Chapter
Selection of Biomonitoring Species
Lichens lack significant cuticle or epidermis and are devoid of a well-developed root system, therefore they absorb nutrients directly from the atmosphere. Along with nutrients, pollutants are also absorbed an...
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Chapter
Ecosystem Monitoring
Monitoring the quality and sustainability of the ecosystem with lichens has been studied worldwide. Three major categories of assessment that have been identified so far for the role of lichens in ecosystem mo...
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Article
Changing lichen diversity in and around urban settlements of Garhwal Himalayas due to increasing anthropogenic activities
Decrease in lichen diversity is an important biometric tool to assess the prevailing environmental condition in an area. An attempt has been made to explore the utility of lichen diversity in the monitoring of...
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Article
Polycyclic aromatic hydrocarbon (PAH) accumulation in lichen, Phaeophyscia hispidula of DehraDun City, Garhwal Himalayas
The distribution and origin of polycyclic aromatic hydrocarbons (PAHs) in the lichen, Phaeophyscia hispidula (Ach.) Essl., collected from nine different road crossings of DehraDun, capital city of Uttaranchal (Ga...
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Article
Effect of metallic pollutants on the physiology of lichen, Pyxine subcinerea Stirton in Garhwal Himalayas
Chl. a, Chl. b, total Chl., Carotenoid, Protein and OD 435/OD 415 ratio were measured to estimate the possible damage caused by the metallic pollutants in the lichen, Pyxine subcinerea Stirton collected from four...
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Article
Heavy Metal Accumulation in Phaeophyscia hispidula En Route to Badrinath, Uttaranchal, India
Phaeophyscia hispidula, a common foliose lichen, growing in its natural habitat, was analysed for the concentration of six heavy metals (Fe, Ni, Zn, Cr, Cu and Pb) from five different sit...
