ID: 57192
Title: Biodiversity of arbuscular mycorrhizal associations in some forest trees of Aagoonia, Bangladesh
Author: P P Dhar and M A U Mridha
Editor: Dr. S S Negi
Year: 2012
Publisher: The Indian Forester, Vol 138, No 4, Apri 2012
Source: Centre for Ecological Sciences
Reference: None
Subject: Forestery
Keywords: Arbuscular mycorrhiza, biodiversity, colonization, spore population
Abstract: Roots and rhizosphere soils of eight different tree species (Albizia odoratissima, Artocarpus chaplasha, Elaeocarpus robustus, Mangifera sylvatica, Quercus velutina, Syzygium cumini, Tectona grandis, Toona ciliata were collected from the Aagoonia forest to determine the biodiversity of arbuscular mycorrhizal (AM) colonization and AM fungal spore population. Roots of all the tree species were found colonized by AM fungi. The range of colonization varied significantly (18-83%). The highest was recorded in E. robustus (83%) followed by T. ciliata (72%), Q. velutina (62%), T. grandis (59%), M sylvatica (50%), S. cumini (45%) and A odoratissima (33%). The lowest was recorded A. chaplasha (18%). Vesicular colonization was recorded ranging 10-60% in six tree species. The highest was recorded E. robustus (60%) followed by T. ciliata (54%), T. grandis (40%), S cumini (28%) and Q velutina (20%). The lowest was A. odoratissima (10%). No vesicular colonization was recorded in A. chaplasha and M sylvatica. Arbuscular colonization was recorded (4-30%) in six tree species. The highest was recorded T. grandis (30%) followed by Q. velutina (12%) and T. ciliata (10%). The lowest was recorded in S. cumini (4%). Arbuscular mcorrhizal fungal spore population varied significantly (120-784/100 g dry soil). The highest population was recorded in the soils of T. ciliata (784) as followed by E. robustus (681), T. grandis (333), Q. velutina (285), M. sylvatica (256), A chaplasha (210) and A. odoratissima (185).
Location: TE 15, New Bioscience Building, IISc
Literature cited 1: None
Literature cited 2: None
ID: 57191
Title: Kanamycin sensitivity in cultured leaf and petiole tissues of Himalayan poplar (Populus ciliata Wall)
Author: Ajay KUmar Thakur and Dinesh Kumar Srivastava
Editor: Dr. S S Negi
Year: 2012
Publisher: The Indian Forester, Vol 138, No 4, Apri 2012
Source: Centre for Ecological Sciences
Reference: None
Subject: Forestery
Keywords: Populus ciliata, kanamycin sensitivity, regeneration, transformation
Abstract: Kanamycin sensitivity studies were conducted in leaf and petiole tissues of Himalayan poplar to investigate the suitability of kanamycin resistance as a selectable marker for genetic transformation. Increasing concentrations of kanamycin i.e. 10, 20, 30, 40 and 50 mg/l was given to find out the minimum dose of kanamycin required for the selection of putative transformed cells during genetic transformation. A decrease in fresh weight in leaf and petiole explants was observed with the increase in kanamycin concentration. At 50mg/l kanamycin, callus formation and shoot regeneration was blocked and the explants turned brown and started dieing. The higher tolerance level of leaf and petiole tissues of Himalayan poplar up to 50 mg/l kanamycin concentration indicated that this concentration of kanamycin would be the most useful for selection of npt-II gene transformed leaf and petiole tissues of Populus ciliata.
Location: TE 15, New Bioscience Building, IISc
Literature cited 1: None
Literature cited 2: None
ID: 57190
Title: Standardization of mini cutting clonal propagation technique in Eucalyptus camaldulensis and E. tericornis spp
Author: P S Shanmugam and R Seenivasan
Editor: Dr. S S Negi
Year: 2012
Publisher: The Indian Forester, Vol 138, No 4, Apri 2012
Source: Centre for Ecological Sciences
Reference: None
Subject: Forestery
Keywords: Minicutting, Minihedge, juvenility, E. camaldulensis, E. tereticornis
Abstract: Eucalyptus vegetative mass production has been advanced through the adoption of many improved methods. The suitabillity of vegetative mass propagation using minicuttings derived from the minihedges grown in the sand beds was evaluated. The study reveals the superiority of this technique over the regular stem cuttings from the open clonal multiplication area. The minicuttings of Eucalyptus camaldulensis (ITC 413, TNPL 103) and Eucalyptus tereticornis (ITC 3, TNPL 106) clones recorded more than 80% survival in the mist chamber, whereas the stem cuttings from the open CMA of the same clones recorded only 50% survival. The use of growth substances were completely eliminated in the minicuttings. Among the treatment periods T2 (21 days in the mist chamber) proved to be highly effective for the Eucalyptus mass production through the mini cutting method. Except shoot length and other parameters like survival percentage in the mist chamber. 50% shade house, root length and number of lateral roots was more in T2 compare to other treatments. The juvenility and nutrient status of the mother plants influences the survival ability of the minicuttings in the mist chamber. The present study reveals the suitability of minicutting clonal production method for E. camaldulensis and E. tereticornis clones in the Indian condition.
Location: TE 15, New Bioscience Building, IISc
Literature cited 1: None
Literature cited 2: None
ID: 57189
Title: Growing Jatropha curcas with rainwater harvesting in hilly tract of South Western Rajasthan, India
Author: G Singh, T R Rathod, N K Limba, G R Choudhary and A U Khan
Editor: Dr. S S Negi
Year: 2012
Publisher: The Indian Forester, Vol 138, No 4, Apri 2012
Source: Centre for Ecological Sciences
Reference: None
Subject: Forestery
Keywords: Jatropha curcus, Survival and growth, rainwater harvesting treatment, socio-economic benefits
Abstract: Survival and growth of Jatropha curcas was examined in relation to slope gradient and rainwater harvesting treatments with a view to use this species in revegetation of degraded hilly area with its socio-economic benefits. Varying slopes were <20%, 10-20% and >20%, whereas rainwater harvesting treatments were control (CL), contour trench (CT), Gardonie(G), Box trench (BT) and V-ditch (V). Soil water content (SWC) was greater (p<0.05) <10% area and decrease in order <10%<>20%<10-20% sloe areas. SWC was lowest in the CL plots, whereas it was highest in Gradonie plots in August. The increase in SWC over control was by 16% and 24% in August 2006 and 2007, respectively. SWS was highest in CT in June 2006 and in BT in June 2007, and the improvement in SWC resulted from rainwater harvesting was by 51% and 15% in the respective treatments influencing survival and growth of J. curcas. The lowest survival in >20% slope area indicated its suscepitibility to water stress, further supported by the highest growth in BT plots with the highest soil water. Plants were tallest (p<0.05) in <10% and smallest in >20% slope area. The plants growing along the contour trench were tallest (p<0.05), whereas plants growing in the contro plots were smallest (p<0.05) suggesting the beneficial effect of water harvesting on the growth of J. curcas in degraded areas. Conclusively Jatropha curcas can be used to restore degraded hilly tract utilizing rainwater harvesting.
Location: TE 15, New Bioscience Building, IISc
Literature cited 1: None
Literature cited 2: None
ID: 57188
Title: An evualuation of successul reclamation of bauxite residue through afforestation activities in South India
Author: Suresh Chauhan and C S Silori
Editor: Dr. S S Negi
Year: 2012
Publisher: The Indian Forester, Vol 138, No 4, Apri 2012
Source: Centre for Ecological Sciences
Reference: None
Subject: Forestery
Keywords: Reclamation, afforestation, bauxite mines, residue (Red mud) soil amenders, grass species
Abstract: The present article is based on the results of a pilot project conducted to improve the physico chemical characteristics of bauxite residue (red mud) to make it suitable for rehabilitation through afforestation activities. Of the five tree species selected during nursery trials, Prosopis juliflora, Acacia nilotica, and Pongamia pinnata responded well in combination iwth 55% Redmud + 25% FYM + 15% Gypsum + 5% Vegetative dry dust + Bacteria + Mycorrihzae, while other two species, Melia azedarach and Acacia tortilis did not survive and thus were replaced by Albizia lebbek and Leucaena leucocephala during pilot implementation in 1.08 ha research plot of red mud of Hindustan Aluminium Company Limited (HINDALCO) at Belgaum, Karnataka, South India. Among the grass and legume species, all the selected four species viz. Brachiaria mutica, Brachiaria decumbens, Stylosanthes scabra and Sesbania sesban performed well. Continuous monitoring on growth pattern of tree and grass species and soil characteristics remarkable changes in the physico chemical properties of red mud.
Location: TE 15, New Bioscience Building, IISc
Literature cited 1: None
Literature cited 2: None
ID: 57187
Title: Phytotherapeutic claims of Kandha and Kolha tribes of district Boudh (Orissa)
Author: Madhab Chandra Behera and Saswat Kumar Nayak
Editor: Dr. S S Negi
Year: 2012
Publisher: The Indian Forester, Vol 138, No 4, Apri 2012
Source: Centre for Ecological Sciences
Reference: None
Subject: Forestery
Keywords: Boudh, Ethno medicine, Kandha, Kolha, Phytotherapeutic
Abstract: Boudh is one of the centrally located backward district of Orissa. Because of its location in the Eastern Ghat, the tropical dry deciduous flora is very heterogeneous and diverse. Kandha and Kolha are the primitive tribes attributing for 12.47% to total populaiton of the district. They use 44 numbers of wild plant species belonging to 30 family and 36 genera for curing different diseases and disorders. Out of these, euphorbiaceae and fabaceae are the most exploited families. However, further pytochemical, pharmacological and clinical investigation is essential for scientific validation of these ethno drugs which may help in discovering new drugs for mankind.
Location: TE 15, New Bioscience Building, IISc
Literature cited 1: None
Literature cited 2: None
ID: 57186
Title: Plant Taxonomy: Past, Present and Future - Dr Prithipalsingh Festschrift
Author: None
Editor: P Balaram
Year: 2012
Publisher: Current Science Association, Vol 103, No 6, 25 September 2012
Source: Centre for Ecological Sciences
Reference: None
Subject: Current Science
Keywords: None
Abstract: None
Location: TE 15, New Bioscience Building, IISc
Literature cited 1: None
Literature cited 2: None
ID: 57185
Title: Fossil batoid and teleost fish remains from Bhuban formation (Lower to middle Miocene), Surma group, Aizawl, Mizoram
Author: R P Tiwari and Victor Zochhuana Ralte
Editor: P Balaram
Year: 2012
Publisher: Current Science Association, Vol 103, No 6, 25 September 2012
Source: Centre for Ecological Sciences
Reference: None
Subject: Current Science
Keywords: Batoids, caudal spine, dental plates, fish remains, fossiliferous horizon, teleosts
Abstract: Intraformational conglomeratic horizon within the Upper Bhuban unit of Bhuban Formation, Surma Group (Lower to Middel Miocene) exposed to two localities in the vicinity of Aizawl, Mizoram has yielded fish ramins mostly in the form of isolated teeth, dental plates and spines. Majority o these belong to diverse selachians and have already been described. We describe here dental plates and a caudal spine belonging to two species of Myliobatis, one of Aeteobatus (batoids) and four of Diodon (teleosts) from the same fossil localities. These fish remains together with associated selahians and mega-invertebrates suggest the existence of a tropical to subtropical climate and a warm shallow marine set-up near to the shoreline in a high-energy environment during the deposition of the fossiliferous horizon.
Location: TE 15, New Bioscience Building, IISc
Literature cited 1: None
Literature cited 2: None
ID: 57184
Title: Development of village-wise flood risk index map using multi-temporal satellite data: a study of Nagaon district, Assam, India
Author: S V Shiva Prasad Sharma, G Srinivasa Rao and V Bhanumurthy
Editor: P Balaram
Year: 2012
Publisher: Current Science Association, Vol 103, No 6, 25 September 2012
Source: Centre for Ecological Sciences
Reference: None
Subject: Current Science
Keywords: Flood, flood hazard layer, risk, multi-temporal satellite data, vulnerability index
Abstract: The Nagaon district in Assam is in a sub-humid region with a greater part of the district comprising alluvial soil ranging from pure sand on the banks of the Brahmaputra to stiff clay The area is subjected to frequent flooding by rivers durign a spell of 4 months in a year. In the present study, flood hazard layer is considered as the primary input and is integrated with land use/land cover, infrastructure and population data and weightages are assigned to each class. based on this, village flood risk index map for Nagaon district has been generated. The results of analyses indicate that about 167 villages are in the moderate-high risk index zone. About 35,354 ha of the district is in high flood hazard zone and about 25,281 ha of crop area is affected annually. We conclude that use of multi-temporal satellite datasets, coupled that use of multi-tempora satelilte datasets, coupled with GIS tools, are useful in idnetifying vulnerability of infrastructure, population and land use in the even of flood disaster and in calculating the flood risk index.
Location: TE 15, New Bioscience Building, IISc
Literature cited 1: None
Literature cited 2: None
ID: 57183
Title: Partial imputation to improve predictive modelling in insurance risk classification using a hybrid positive selection algorithm and correlation - based feature selection
Author: Mlungisi Duma, Bhekisipho Twala, Fulufhelo V Nelwamondo and Tshilidzi Marwala
Editor: P Balaram
Year: 2012
Publisher: Current Science Association, Vol 103, No 6, 25 September 2012
Source: Centre for Ecological Sciences
Reference: None
Subject: Current Science
Keywords: Insurance risk classification, missing data, positive selection, supervised learning
Abstract: We porpose a hybrid missing data imputation technique using positive selection and correlation-based feature selection for insurance data. The hybrid is used to help supervised learning methods improve their classification accuracy and resilience n the presence of increasing missing data. The positive selection algorithm searches for potential candidates for impuation and the correlation-based feature selection method searches for attributes have a significant effect on the target outcome. The imputation is performed only on those attributes that have an impact on the target outcome. The results show that the classification accuracy and resilience of supervised learning methods improve significantly when applied with the imputation strategy under these assumptions.
Location: TE 15, New Bioscience Building, IISc
Literature cited 1: None
Literature cited 2: None
ID: 57182
Title: Development of a helium purification system using pressure swing adsorption
Author: Nisith Kr. Das, Pradeep Kumar, C Mallik and Rakesh K Bhandari
Editor: P Balaram
Year: 2012
Publisher: Current Science Association, Vol 103, No 6, 25 September 2012
Source: Centre for Ecological Sciences
Reference: None
Subject: Current Science
Keywords: Pressure swing adsorption (PSA)
Abstract: A three-be seven-step pressure swing adsorption (PSA) helium purification system has been developed exploiting PSA. It removes impurities like N2 and O2 from a ternary mixture leaving out high-purity helium from the gas mixture. In the present experimental set-up a feed gas stream containing helium (55.0 mol%), nitrogen (~35.0 mol%) and oxygen (~10.0 mol%) has been introduced into the system with predetermined pressure and flow rate. Lithium exchanged low silica X-zeolite (LiLSX) molecular sieve with an average pore diameter of 0.9-1.0 nm has been used as the adsorbing medium. Total cycle time of the PSA system was conveniently chosen to be 180 sec. The PSA system is operating successfully resulting in high-purity helium (>99.9%) with a yield of around 89%.
Location: TE 15, New Bioscience Building, IISc
Literature cited 1: None
Literature cited 2: None
ID: 57181
Title: Chattonella marina bloom in the coastal sea of Mahe, Southwest India
Author: M G Sanilkumar, Anit M Thomas, K C Vijayalakshmi, A A Mohamed Hatha, A V Saramma
Editor: P Balaram
Year: 2012
Publisher: Current Science Association, Vol 103, No 6, 25 September 2012
Source: Centre for Ecological Sciences
Reference: None
Subject: Current Science
Keywords: None
Abstract: None
Location: TE 15, New Bioscience Building, IISc
Literature cited 1: None
Literature cited 2: None
ID: 57180
Title: Diversity and gradients in cedar forests on Taurus mountain range (Turkey)
Author: Ali Kavgai, Andra Earni
Editor: Dr R C Dalela
Year: 2012
Publisher: Triveni Enterprises, Vol 33, No 5, September 2012
Source: Centre for Ecological Sciences
Reference: None
Subject: Journal of Environmental Biology
Keywords: Cedrus forest, Numerical analysis, phytogeography, Taurus mountain range
Abstract: Cedrus libani forests have been under the anthropogenic pressure for thousands of years. The unattainable topography of the Taurus mountain range (Southern Anatolia) has prevented cedar in this region from being extirpated, in contrast to its other distribution areas in Syria and Lebanon. Numerical analyses of releves confirmed the individuality of associations, as well as the division of C. libani forests into two ecological and floristicaly different groups/alliances (Abieti-Cedrion and Lonicero-Cedrion). Abieti-Cedrion is distributed in the middle and eastern Taurus whereas Lonicero-Cedrion appears in the Western Taurus. The main gradients of C.libani forests were detected. It was noticed that the distribution and floristic composition of C. libani forests is strongly affected by the geographical factors. Topographical factors are also influential on their distribution. C. libani forests are fundamental components of the Mediterranean phytogeographical region and floral elements, but under more continental conditions, where the influence of the Mediterranean climate decreased, the porportion of Iran-Turanian and Euro-Siberian floral elements increase, especially towards the east and north, as well at higher altitudes and on steeper sites.
Location: TE 15, New Biology Building
Literature cited 1: None
Literature cited 2: None
ID: 57179
Title: Studies on technology for seaweed forest construction and transplanted Ecklonia cava growth for an artificial seaweed reef
Author: Young-Dae Kim, Jung-Pyo Hong, Hong-In Song, Mi Seon Park, Tae Suk Moon, Hyun II Yoo
Editor: Dr R C Dalela
Year: 2012
Publisher: Triveni Enterprises, Vol 33, No 5, September 2012
Source: Centre for Ecological Sciences
Reference: None
Subject: Journal of Environmental Biology
Keywords: Barren ground, Construction seaforest, Ecklonia cava, Spore transplantation
Abstract: We installed seaweed reef for restoration of barron ground coast. We hollowed out a U-shaped groove in a cross-shaped artificial seaweed reef and covere it with a zinc sheet (U-bar) to transplant Ecklonia cava growing on Dellenia wood by hand, installing the U-bar on the artificial seaweed reef, fixing it with concrete. Thus seawee can be attached easily, with pre-installe stainless bolts and nuts. The length of Ecklonia cava leaf transplanted to the cross-shaped reef was 7.2 cm in February 2005 reached its maximum size, 35.9 cm (n=30) by July. Thereafter, it decreased to 18.9 cm in October due to shedding. The leaf weight after the experiment was 24.8 from the initial 0.4 cm (n=30). Regression anaysis showed Y=0.7875X-4.6488 (R2 = 0.7225) for blade length and Y=0.0025X2.6733 (R2 =0.8711) for leaf weight. The high values of the R2 values for the two measurements were highly reliable, with the reliability of the linear regression function higher than that of the functions of 2 variables. The artificial seaweed forest constructed in the barren ground was highly comparable with natural seaweed forest in terms of growth, indicatign that the artificial seaweed construction can be done in an easy, efficient and economically viable way. This further indicates that the construction can be done in a easy, efficient and economically viable way. This furhter indicates that the technology developed by the present study can be extensively used for the project for artificial seaweed forest construction.
Location: TE 15, New Biology Building
Literature cited 1: None
Literature cited 2: None
ID: 57178
Title: Analysis and assessment of trace elements pollution in sediments of Lake Uluabat, Turkey
Author: Aslihan Katip, Feza Karaer, Saadet IIeri,Sonay Sarmasik, Nurcan Aydogan, Sinem Zenginay
Editor: Dr R C Dalela
Year: 2012
Publisher: Triveni Enterprises, Vol 33, No 5, September 2012
Source: Centre for Ecological Sciences
Reference: None
Subject: Journal of Environmental Biology
Keywords: Trace elements, Sediment pollution, Lake
Abstract: During the period 2008-2009, eight sampling stations were carried out on Lake Uluabat to assess trace element distribution in the lake sediments and to idnetify major sources of the sediment pollution. Ten elements, including Iron (Fe), Manganese (Mn), Zinc (Zn), Chromium (Cr), Nickel (Ni), Copper (Cu), Lead (Pb), Cadmium (Cd), Arsenic (As), Boron (B) were detetmined in the sampled lake sediments. The lowest and highest variation intervals ( 5.0377 - 27664.197 mg kg -1) were found for Cd and Fe, respectively. Concentrations of Cr (131.627 mg kg-1), Ni (220.032 mg kg-1) and Cd (5.0377 mg kg-1) in sediment samples were higher than in the other regions. Moreover, suspended slids, conductivity, pH temperature and the organic matter %were found to affect the concnetrations of sediment.on the basis of the findings of the study, it was concluded that higher concentrations of trace elements in dry seasons increase in suspended matter, pH, percentage organic content, and conductivity.
Location: TE 15, New Biology Building
Literature cited 1: None
Literature cited 2: None