18 Result(s)
within
Article
Vertika Shukla
-
Article
Investigation of Factors Controlling Temporal Trend of Lichen Diversity in Arid Region of India
Lichens are sensitive indicators of changes in climatic condition of an area at both micro and macro scales. The present study analyzes the lichen diversity change in the last forty years compared with the tem...
-
Article
A geostatistical approach to compare metal accumulation pattern by lichens in plain and mountainous regions of northern and central India
Based on the physicochemical characteristics, metals emitted from the source (both natural and anthropogenic) contributes towards spatial continuity at a regional scale. Apart from the intrinsic properties of ...
-
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...
-
Article
Lichen Community Composition in Tawang District of Arunachal Pradesh, Tool for Long-Term Climate Change Monitoring
The lichen diversity in Tawang district of Arunachal Pradesh, India was studied in order to access the long-term effect of climate change in alpine regions of the area. The present study provides an enumeratio...
-
Article
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...
-
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...
-
Article
Characterization of the diversity of mycosporine-like amino acids in lichens from high altitude region of Himalaya
Lichens are tolerant to a number of environmental variables including high-intensity solar radiations, which is mainly due to the presence of chemical substances in the thallus. Especially, cyanobacterial lich...
-
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...
-
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...
-
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...
-
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...
-
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...
-
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 ...
-
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...
-
Article
Lichens as a potential natural source of bioactive compounds: a review
Biological activity of material whether known in folk medicine or observed in planned screening program has been the starting point in the drug research. The general pattern is the isolation of active principl...
-
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...
-
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...
-
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...
