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22 Result(s)
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Vertika Shukla
Environment
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Chapter
Lichens as Sinks of Airborne Organic Pollutants: A Case Study in the Natural Ecosystem of Himalayas
Persistent organic pollutants (POPs) are predominantly released into the atmosphere due to anthropogenic activities. POPs pose risk to the global environment as they are persistent having long-range transport ...
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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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Spatio-temporal variations in hydro-geochemistry of groundwater at rural, urban and industrial areas of Kanpur, India
Physicochemical characteristics of groundwater provide vital information regarding prevailing geochemical, geomorphological and predominant pollution conditions in an area. In the present work, hydro-geochemic...
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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
Lichens reveal air PAH fractionation in the Himalaya
This paper shows that gas/particulate phase partitioning of polycyclic aromatic hydrocarbons (PAHs) can be monitored using lichens. Anthropogenic sources are responsible for the release of PAHs, which are bioa...
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Article
Lichens to distinguish urban from industrial PAHs
This paper shows that lichens can be used as biomonitors to distinguish urban from industrial polycyclic aromatic hydrocarbons (PAHs). PAHs are atmospheric pollutants originating mainly from incomplete combust...
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Chapter
Air Quality Monitoring with Lichens in India. Heavy Metals and Polycyclic Aromatic Hydrocarbons
Air quality monitoring is an integral part of an Environmental Impact Assessment Programme. It can be carried out either by direct air samplers or by employing biomonitoring plants. Monitoring of air pollution...
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Article
Periodical monitoring with lichen, Phaeophyscia hispidula (Ach.) Moberg in Dehradun city, Uttarakhand, India
Nine heavy metals were estimated in lichen, Phaeophyscia hispidula (Ach.) Moberg, collected from 12 different sites of Dehradun, capital city, to analyze the air quality of Uttarakhand. Total metal concentration ...
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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...
