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Chakrabarti, S.
- Locating Zones of High Discharging Wells for Protection and Management of Groundwater Resources in Precambrian Metamorphic Rocks of Purulia District, West Bengal, India - A Case Study by Hydrostructural Domain Approach
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Authors
Affiliations
1 Department of Geology, Hooghly Mohsin College, University of Burdwan, Chinsurah-712101, IN
2 Department of Applied Geology & Environmental Systems Management, Presidency University, 86/1 College Street, Kolkata 700 073, IN
1 Department of Geology, Hooghly Mohsin College, University of Burdwan, Chinsurah-712101, IN
2 Department of Applied Geology & Environmental Systems Management, Presidency University, 86/1 College Street, Kolkata 700 073, IN
Source
Journal of Environment and Sociobiology, Vol 11, No 1 (2014), Pagination: 11-24Abstract
Locating sites of high discharging wells in metamorphic crystalline terrain is still a difficult problem imposing inadequate protection and management for groundwater resources. The present study attempts to determine this technique in a Precambrian metamorphic rock in and around Balarampur, Purulia district, West Bengal, India using lineaments, joints/fractures and well data with the help of software approach. The joints/fracture study consists of using hydraulically significant fracture data to generate representative modal and coefficient of variance (Cv) for each domain. Lineament study incorporates estimation of the hydraulically significant FCL and their percentage of occurrence in each domain. The hydrostructural domain based study identifies areas within the shear zone (D2) and south of the shear zone (D3) as hydraulically significant region than the region to north of the shear zone (D1). The modal and Cv values of well discharges also signify D2 and D3 as hydraulically significant part of the study area. Existing wells show discrete increase in discharge from Dl. to D3 through D2, with high discharging wells (= 4000 litre per day) occurring in groups in linear fashion, defining 'well lines', in close proximity to the determined FCL. Thus the study validated the hydrostructural domain based analysis for locating high discharging wells, indicating the sites for protection and management of groundwater resources for sustainable utilization and development in Precambrian metamorphic terrain.Keywords
Fracture, Lineament, Well Location, Precambrian Metamorphic Rock.
- Variation of Group Diversity in Soil Microarthropod Community at Different Altitudes in the Darjeeling Himalayas, West Bengal, India
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Authors
Affiliations
1 Zoological Survey of India, New Alipore, Kolkata-700 053, IN
2 Department of Zoology, Kalyani University, Kalyani-741235, IN
1 Zoological Survey of India, New Alipore, Kolkata-700 053, IN
2 Department of Zoology, Kalyani University, Kalyani-741235, IN
Source
Journal of Environment and Sociobiology, Vol 4, No 2 (2007), Pagination: 163-168Abstract
Soil samples were collected from eight sites with an approximate altitudinal gap of 500 m in the Darjeeling Himalaya in West Bengal. Microarthropods collected from soil were divided into four major groups, viz., oribatid mites, other mites, collembola and other microarthropods. Monthly and yearly group diversity of four groups of soil microarthropods were calculated using Shannon's diversity index. Monthly group diversity was found to be negatively correlated with the abundance in most places. Correlation was also traced between some edaphic factors and group diversity. Temperature, moisture and pH were found to have some prominent impact on group diversity in some sites. Organic carbon showed no significant correlation probably because of its presence in sufficient quantity in soil. Both monthly and yearly group diversity were highest in the Tiger Hill.Keywords
Soil Microarthropod, Group Diversity, Edaphic Factors, Altitudes.- Arthropod - Induced Plant Galls with Reference to Aphid Galls and Gall Aphids (Hemiptera, Insecta) in the Himalaya
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Authors
Affiliations
1 Post-Graduate Department of Zoology, Vidyasagar College, Kolkata 700 006, IN
1 Post-Graduate Department of Zoology, Vidyasagar College, Kolkata 700 006, IN
Source
Journal of Environment and Sociobiology, Vol 14, No 1 (2017), Pagination: 1-6Abstract
Plant galls are abnormal growth of plant cells as a result of hypertrophy or hyperplasy due to feeding and/or oviposion of arthropods and other organisms. Due to gall induction a co-existence is established for the survival and growth of both plants and the gall inducing organisms. Among arthropods, some members of the insect orders Diptera, Coleoptera, Hemiptera, Hymenoptera, Lepidoptera, Orthoptera and Thysanaptera and acarine familes Tenupalidae, Eriophyidae and Phytoptidae can induce plant galls. Galls are found on about 15,000 plant species from gymposperms to dicotyledons. Gall inducing individuals establish an intimate relationship with the plant for efficient and successful utilisation of habitat and food resources. Plant hormones, i.e., Indole acetic acid (IAA) alone or in combination with tryptophan are mainly responsible for gall induction but their specific mode of action is not yet properly known. There is no geographical boundary of galls in general. In India, aphid galls are restricted only in the Himalaya and more in Northwest Himalaya.Keywords
Galls, Hypertrophy, Hyperplasy, Phytophagous Arthropods.References
- Abrahamson, W. G. and Weis, A. E. 1987. Nutritional ecology of arthropod gall makers. In F. Slansky and J. G. Rodriguez (eds.) Nutritional ecology of gall insects. John Wiley & Sons, New York, USA, pp. 236-258.
- Aoki, S. and Kurosu, U. 2010. A review of the biology of Ceratiphidini (Hemiptera, Aphididae, Hormaphidinae) focusing mainly on their life cycles, gall formation and soldiers. Psyche, 2010: 1-34 (on line).
- Ananthakrishnan, T. N. 1978. Thrips galls and gall thrips. Technical Monograph, No 1, Zoological Survey of India, Kolkata, pp. 1-69.
- Askew, R. R. 1984. The biology of gall wasp, pp. 223-272. In T. N. Ananthakrishnan (ed.) Biology of gall insects. Oxford & IBH Publ. Company, New Delhi, India.
- Blanche, K. R. 1993. Insect induced galls on Australian vegetation, pp. 49-55. In P. W. Price et al. (eds.) The Ecology and evolution of gall forming insects. USDA Forest Service. St. Paul, Minnesota, USA.
- Chakrabarti, S. 2007. Diversity and biosystematics of gall-inducing aphids (Hemiptera: Aphididae) and their galls in the Himalaya. Oriental Insects, 41: 35-54.
- Chakrabarti, S. 2009. Diversity, distribution and endemism of aphids (Hemiptera) in Indian subregion of Oriental realm. Redia, 42: 79-85.
- Felt, E. P. 1940. Plant galls and gall makers. Comstock Publishing, New York, USA, pp 1-364.
- Fernandes, G. W., Lara, A. C. F. and Price, P. W. 1993. The geography of galling insects and the mechanisms that results in patterns, pp. 42-48. In P.W. Price et al. (eds.) The Ecology and evolution of gall forming insects. USDA Forest service, St. Paul, Minnesota, USA.
- Gagne, R. J. 1984. The geography of gall insects, pp. 305-322. In T. N. Ananthakrishnan (ed.) Biology of gall insects. Oxford & IBH Publ. Company, New Delhi, India.
- Hartley, S. E. 1999. Are gall insects large rhizobia? Oikos, 84: 333-342.
- http://aphid.speciesfile.org- Aphid Species File (Accessed on May 15, 2016)
- Mani, M. S. 2000. Plant galls of India. (2nd ed.). Science Publishers Inc. New Hampshire, USA, pp 1-477.
- Meyer, J. 1987. Plant galls and gall inducer. Gebruder Borntraeger, Berlin, Germany, pp 1-291.
- Miles, P. W. 1999. Aphid saliva. The Biological Review, 74: 41-85.
- Raman, A., Schaefer, C. W. and Withers, T. M. 2005. Biology, ecology and evolution of gall inducing arthropods – Vol. I. Science Publishers, Inc. Enfield (NH), USA, pp. 1-429.
- Remaudiere, G. and Remaudiere, M. 1997. Catalogue of the World’s Aphididae. INRA, Paris, France, 1-493.
- Schaller, G. 1968. Untersuchungen zur Erzeugung kunstlicher Pflanzengallen. Marcellia, 35: 131-153.
- Schlinger, E. I. 1974. Continental drift, Nothofagus and some ecologically associated insects. Annual Review of Entomology, 19: 323-343.
- Skuhravy, M., Skuhravy, V. and Brewer, J. W. 1984. Biology of gall midges, pp. 169-222. In T. N. Ananthakrishnan (ed.). Biology of gall insects. Oxford & IBH Publ. Company, New Delhi, India.
- Weiss 1993. What can gallmakers tell us about natural selection on the components of plant defense? pp. 157-172. In P. W. Price et al. (eds.) The Ecology and evolution of gall forming insects. USDA Forest service, St. Paul, Minnesota, USA.