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Misra, A.
- Nutrient Utilization in some Tropical Forest Tree Seedlings
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Indian Forester, Vol 111, No 6 (1985), Pagination: 368-384Abstract
The conceatration of nitrogen, phosphorus, potassium, Calcium aad sodium has been estimated in one year seedling of Dalbergia sissoo Roxb., Tamarindus indica Linn., Diospyros melanoxylon Roxb., Terminalia arjuna Bedd and Tectona grandis Linn. The percentage of N, P, K. Ca and Na was highest in leaves followed by decrease in stem and ischolar_main respectively in seedlings of all species. The mineral composition of leaves in each species increased steadily with advance of age of seedlings till 8-9 months at the time yellowing of leaves. After this remarkable decrease in N, P, K content was noticed. However, a little decrease in Ca and Na content of leaves was also noticed. There was continuous and steady increase of N, P and K content of stem and ischolar_main of seedlings of each species. But the Ca and Na content increased for 8 to 10 months of seedlings age after which narrow downfall was observed. The concentration of sodium in leaves was relatively, higher than P, K and Ca in D. sissoo, T. indica, T. arjuna and T. grandis. It was higher than N also in D. melanoxylon. The N, P, K, Ca and Na have been analysed from fresh litter and found to be very closure but relatively lower than those of mature leaves.
- First Report of Flabelligerid Polychaete Pherusa bengalensis from Odisha Coast
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Affiliations
1 Zoological Survey of India, 27, J. L. Nehru Road, F. P. S. Building, Kolkata-7000016, West Bengal, IN
2 KBB Nivedita College, Behala, Kolkata-700 034, IN
1 Zoological Survey of India, 27, J. L. Nehru Road, F. P. S. Building, Kolkata-7000016, West Bengal, IN
2 KBB Nivedita College, Behala, Kolkata-700 034, IN
Source
Journal of Environment and Sociobiology, Vol 9, No 2 (2012), Pagination: 195-196Abstract
During a recent survey to Chandipur coast (Balasore District), Odisha one of us (MR) collected a specimen of polychaete worm from the lower tidal area of the Chandipur sea beach. This specimen is 65 mm long and 7 mm wide with reddish-brown ooze adhering to the skin surface. Body is cylindrical or club-shaped anteriorly, while posterior part tapering, looking like a filiform coiled tail. Body is covered by small globular papillae. Buccal tube is very long, protrusible, cylindrical and frilled at the edge. Mouth opening is trilobed, two ventral lobes are larger than the dorsal.- Neotectonic Control on Drainage System in Gangetic Plain, Uttar Pradesh
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Affiliations
1 Department of Geology, Lucknow University, Lucknow-226 007, IN
1 Department of Geology, Lucknow University, Lucknow-226 007, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 47, No 5 (1996), Pagination: 599-609Abstract
Study of remotely sensed data and SOl topographical maps with some field observations has helped in the identification of lineaments controlling the drainages, using various indications like displacement of Siwalik hills, skewness of fan surfaces, preferential alignment of river channel, knick points, distorted meanders, abrupt change in river courses, escarpments and asymmetrical terraces. The northern part of the Gangetic plain, the Piedmont zone shows two major lineaments, i.e. NNE-SSW and NW-SE, developed as conjugate strike slip features, with some evidences of gravity component. The NW-SE direction of the conjugate system is very prominent in Central Alluvial Plain and has controlled the major drainages. These lineaments have caused abrupt change in flow directions of many streams; and in parts, have behaved as gravity fault with NE blocks as downthrown side. The drainage in the Marginal Alluvial Plain (southern part) is essentially controlled by the reactivated basement lineaments of predominantly SW-NE direction. The drainage of northern and central part of Gangetic plain is controlled by newly developed lineaments formed due to compressional stresses of the Himalaya while drainage in southern part is controlled by reactivated basement lineaments.Keywords
Neotectonics, Drainage, Lineaments, Gangetic Plain, Uttar Pradesh.- Polychaetes of the Wetlands of West Bengal
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Authors
Santanu Mitra
1,
A. Misra
1
Affiliations
1 Zoological Survey of India, F.P.S. Building, 27, J. L. Nehru Road, Kolkata 700016, IN
1 Zoological Survey of India, F.P.S. Building, 27, J. L. Nehru Road, Kolkata 700016, IN
Source
Journal of Environment and Sociobiology, Vol 7, No 2 (2010), Pagination: 141-146Abstract
A total of 74 species of Polychaetes belonging to 51 genera and 28 families have been reported so far from West Bengal wetlands. Out of these, only two species, viz., Aelosoma bengalensis and Lumbrineris pseudobifilaris are reported from freshwater habitats and the remaining are from brackishwater, estuarine and caostal habitats of the state. A list of all these species along with their habitat, district-wise distribution in the states and local status is presented in the present communication.Keywords
Polychaetes, Macrobenthic, Wetland, Endemic.References
- Fauvel, P. 1932. Annelida Polychaeta of the Indian Museum, Calcutta. Mem. Indian Mus., 12 : 1-262.
- Fauvel, P. 1953. The fauna of India including Pakistan, Ceylon, Burma and Malay, Annelida : Polychaeta. The Indian press Ltd., Allahabad.
- Glasby, C. J., Timm, T., Muir, I. A. and Gill, J. 2009. Catalogue of non-marine Polychaeta (Annelida) of the World. Zootaxa. 2070 : 1-52
- Misra, A. 1995. Polychaetes. Estuarine Ecosystem Series Part-2 : Hugli-Matla Estuary, Zool. Surv. India, pp. 93-155.
- Misra, A. 1999. Polychaetes. State Fauna Series 3 : Fauna of West Bengal, Zool. Surv. India, Part 10 : 125-225.
- Misra, A. and Barua, S. 1987. The intertidal distribution of macrofauna on the muddy shore of Malta river, Canning, West Bengal. J. Indian. Soc. Coastal agric. Res., 5(1) : 339-346.
- Misra, A. and Choudhury, A. 1985. Polychaetous annelids from the mangrove swamps of Sunderbans, India. In : Proc. Nat. Symp. Biol. Util. Cons. Mangroves (Ed. L.J. Bhoslae) : 448-452.
- Mitra, S. and Roy, M. (in press). First record of Lumbinereis pseudobifilaris Fauvel (Annelida : Polychaeta) from West Bengal, India. Rec. zool. Surv. India.
- Southern, R. 1921. Polychaeta of Chilka lake and also fresh and brackish waters in other parts of India . Mem. Indian. Mus., 5 : 563-659.
- A Comparative Taxonomic Account of Four Composting Earthworms with Notes on the Possibility of Use of Perionyx sansibaricus (Oligochaeta:Annelida) in Vermicomposting Industry
Abstract Views :363 |
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Authors
Affiliations
1 Zoological Survey of India, F.P.S Building, 27 J. L. Nehru Road, Kolkata-700016, IN
1 Zoological Survey of India, F.P.S Building, 27 J. L. Nehru Road, Kolkata-700016, IN
Source
Journal of Environment and Sociobiology, Vol 4, No 2 (2007), Pagination: 193-198Abstract
VermicLilture and vermicomposting are now globally recognized sustainable livelihood activities related to sustainable organic farming. Selected species of earthworms have been used for vermicomposting purpose. So far three species, namely, -Eisenia foetida (Savigny), Eudrilus eugeniae (Kinberg) and Perionyx excavatus Perrier, are widely used in vermicomposting activities. Of these three species, Eisenia foetida is originated from Europe, Eudrilus eugeniae from Africa and Perionyx excavatus is cosmopolitan in distribution. In this communication another species of earthworm, viz, Perionyx sansibaricus Michaelsen is reported as a prospective worm for use in commercial vermicomposting in semi-arid regions of West Bengal (Bankura, Purulia and West Midnapore districts) based on some earlier stray records as well as successful culture of this species by a farmer of West Bengal for such usage.Keywords
Vermicomposting, Comparative Taxonomy, Perionyx Sansibaricus.- Scatterometry for Land Hydrology Science and its Applications
Abstract Views :252 |
PDF Views:66
Authors
Affiliations
1 Earth, Ocean, Atmosphere, Planetary Sciences and Applications Area (EPSA), Space Applications Centre, ISRO, Ahmedabad 380 015, IN
1 Earth, Ocean, Atmosphere, Planetary Sciences and Applications Area (EPSA), Space Applications Centre, ISRO, Ahmedabad 380 015, IN
Source
Current Science, Vol 117, No 6 (2019), Pagination: 1014-1021Abstract
This study reports the potential of SCATSAT-1 scatterometer data for catchment-scale hydrological applications related with river water level estimation and flood detection. New approaches have been developed for estimation of river water levels and detection of surface flooding using Oceansat-II scatterometer (OSCAT) and SCATSAT-1 scatterometer-based highresolution backscatter and brightness temperature (BT) datasets respectively. Ku-band sigma-0 and BT data, Shuttle Radar Topography Mission Digital Elevation Model and observed hydrometric data have been used in this study. Catchments of gauging sites and their influencing areas were delineated using the topography, wetness conditions and land-cover variations. OSCAT time series of scatterometer image reconstruction data were used to develop model function between basin water index and ground-observed river-stage datasets. Subsequently, inverting these functions on SCATSAT-1 observations, river water levels for 2017 were estimated at different gauging sites. A study on the magnitude of each flooding event in terms of intensity, duration and extent of area affected was also carried out using the scatterometerbased BT data analysis. The study demonstrated that high temporal resolution scatterometer data has the potential to fill the gap of coarser temporal resolution altimeters (10–35 days) for river heights and Synthetic Aperture Radar Data (7–25 days) for surface flooding with the advantage of capturing extreme events.Keywords
Backscattering Coefficient, Brightness Temperature, River Water Level, Scatterometers, Soil Wetness.Full Text
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