ID: 58518
Title: Influence of a dense, low-height shrub species on the accuracy of a lidar-derived DEM
Author: Samuel B Gould, Nancy F Glenn, Temuulen T. Sankey and James P McNamara
Editor: Russell G. Congalton
Year: 2013
Publisher: ASPRS, Vol 79, No 5, May 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: Photogrammetric Engineering & Remote Sensing
Keywords: Digital elevation models (DEMs), GPS
Abstract: Airborne lidar provides an effective platform for collecting elevation data. However, the accuracy of lidar-derived can be adversely affected by natural conditions as well as methods used to process the data. Using a lidar dataset from a mountainous region of southwest Idaho, this study extends previous assessments of DEM accuracy with a focused investigation of a specific dense, low-height shrub species (Ceanothus velutinus), Bare-earth elevations were collected using survey-grade GPS and compared to lidar-derived elevations to assess DEM accuracy. Results suggest that the magnitude of elevation error varied depending on morphological characteristics of ceanothus, terrain slope, and filtering parameters used to process the lidar data. When using optimal filtering parameters, root mean square error (RMSEz) was largest in areas of ceanothus cover, ranging from 0.17 to 0.26 m in slope <250 and 0.28 to 0.37 m in slopes >250. An examination of lidar returns found that ceanothus obstructed laser pulse penetration and few returns reached the ground surface. In areas of ceanothus cover, we conclude that the obstruction of the groudn surface contributed to filtering errors, which resulted in mislabeled ground returns and decreased accuracy in bare-earth DEMs. These results have implications for the use of lidar-derived DEMs in areas of ceanothus throughout western North America, and in ecosytems with similar dense shrub cover.
Location: TE12, New Biological Sciences, IISc
Literature cited 1: None
Literature cited 2: None
ID: 58517
Title: Corrosion protection for wind turbines
Author: Daniel Hautmann
Editor: Jorg-Rainer Zimmermann (iz)
Year: 2012
Publisher: German Wind Energy Association, No 4, August 2012
Source: Centre for Ecological Sciences
Reference: None
Subject: New Energy: Magazine for renewable energy
Keywords: Wind turbines
Abstract: In our new series How it Works, we explain the technological advances that are crucial to modern wind turbines. This first instalment looks at corrosion protection. If you have ideas for future topics, we ' d love to hear from you.
Location: TE12, New Biological Sciences, IISc
Literature cited 1: None
Literature cited 2: None
ID: 58516
Title: Wind power: Under observation
Author: Bernward Janzing
Editor: Jorg-Rainer Zimmermann (iz)
Year: 2012
Publisher: German Wind Energy Association, No 4, August 2012
Source: Centre for Ecological Sciences
Reference: None
Subject: New Energy: Magazine for renewable energy
Keywords: Monitoring systems
Abstract: As condition monitoring systems become more and more sophisticated, analysing the raw data proves an increasingly complex task- one that needs an expert eye.
Location: TE12, New Biological Sciences, IISc
Literature cited 1: None
Literature cited 2: None
ID: 58515
Title: The global commune
Author: Nicole Weinhold
Editor: Jorg-Rainer Zimmermann (iz)
Year: 2012
Publisher: German Wind Energy Association, No 4, August 2012
Source: Centre for Ecological Sciences
Reference: None
Subject: New Energy: Magazine for renewable energy
Keywords: Power generation
Abstract: All over the world, people are discovering the benefits of decentralised power generation. A look around the globe shows how the idea of self-sufficiency based on renewable resources is catching on.
Location: TE12, New Biological Sciences, IISc
Literature cited 1: None
Literature cited 2: None
ID: 58514
Title: Focus on solar and energy efficiency
Author: Rohan Boyle
Editor: Jorg-Rainer Zimmermann (iz)
Year: 2012
Publisher: German Wind Energy Association, No 4, August 2012
Source: Centre for Ecological Sciences
Reference: None
Subject: New Energy: Magazine for renewable energy
Keywords: Energy smart technology
Abstract: Venture capital and private equity investment in clean energy companies slid to a two-year low in the second quarter, but the figures show that many US investors are clearly still hungry for opportunities in solar and ' energy smart technology ' companies.
Location: TE12, New Biological Sciences, IISc
Literature cited 1: None
Literature cited 2: None
ID: 58513
Title: Toxicity of some commonly used insecticides against Spilarctia obliqua (Walker)
Author: Arvind Kumar, Shiwani Bhatnagar and R K Sharma
Editor: Dr. P P Bhojvaid
Year: 2013
Publisher: The Indian Forester, Vol 139, No3, March 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: The Forestry
Keywords: Toxicity, chlorophyrifos, Deltamethrin, Triazophos, Spinosad, Fipronil, Spilarctia obliqua
Abstract: Deltamethrin was found to be most toxic against the larvae of Spilarctia obliqua followed by triazophos, spinosad, chlorpyrifos and fipronil in leaf dip. LC50 of deltamethrin at 12, 24, and 48 hours after treatment (HAT) was 0.008, 0.0001 and 0.00002 percent respectively through larval dip method. With leaf dip method the LC50 was 0.007, 0.0002 and 0.00002 at 12, 24 and 48 HAT respectively. Being the novel mode of action and safety point of view spinosad was the ost promising insecticide which gave the satisfactory control with safety measures, application and environment.
Location: TE15, New Biological Sciences, IISc
Literature cited 1: None
Literature cited 2: None
ID: 58512
Title: An economic analysis of lac marketing in Kanker district of Chhattisgarh
Author: Govind Pal and Bharati Patel
Editor: Dr. P P Bhojvaid
Year: 2013
Publisher: The Indian Forester, Vol 139, No3, March 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: The Forestry
Keywords: Lac marketing, lac growers consumer ' s price, profitability
Abstract: Lac is recognized as a high value cash crop and management of its marketing plays a vital role for better returns. The present paper examines the marketing costs and price spread in marketing of lac in the state of Chhattisgarh. District Kanker has been selected purposively for the present study. Data on marketing costs, margins and constraints in lac is collected from lac growers, marked functionaries and manufacturers. The lac grower received Rs 75 per kg, which amounts to 86.15 percent share in consumers ' s price. The primary purchaser ' s margin was Rs 260 per quintal (2.99 percent of consumers ' price) and incurred Rs 63 per quintal on marketing cost (0.72 percent of consumers ' price). The total maketing cost paid by the wholesaler was Rs 743 per quintal (8.53 percent of consumers ' price). The wholesaler ' s maketing margin was Rs 140 per quintal (1.61 percent of consumers ' price). ' Arhat ' charges were 3 percent of the transacted amount. There was tremendous scope to increase the profitability of lac growers in the study area by adopting proper marketing processing techniques.
Location: TE15, New Biological Sciences, IISc
Literature cited 1: None
Literature cited 2: None
ID: 58511
Title: Investigations on use of Eupatorium (chromolaena odorata) as source for vermicompost porduction and its effect on earthworm population
Author: Manjappa K, Viswanath Jowkin and Nagaraj Katharaki
Editor: Dr. P P Bhojvaid
Year: 2013
Publisher: The Indian Forester, Vol 139, No3, March 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: The Forestry
Keywords: Eupatorium, vermicompost, nutrient content, earthworm population
Abstract: In an experiment conducted with farm material (farm waste + cow dung) and eupatorium the quantity of vermicompost produced was maximum in the treatment received farm materials only (69 kg) and was par with that of the vermicompost produced using farm materials and eupatorium in the porportions of 5:1 (68 kg) and 4:1 (65 kg). The nutrient content of vermicompost was found to increase with inclusion of eupatorium. The population of earthworms (both matured and juvenile) was also not affected or reduced when eupatorium was used in vermicompost production.
Location: TE15, New Biological Sciences, IISc
Literature cited 1: None
Literature cited 2: None
ID: 58510
Title: Influence of seed pretreatments and sowing conditions on germination and initial seedling vigour of Indian almond (Terminalia catappa L)
Author: P Masilamani, P Yasodha and K Annadurai
Editor: Dr. P P Bhojvaid
Year: 2013
Publisher: The Indian Forester, Vol 139, No3, March 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: The Forestry
Keywords: Terminalia catappa, pre-sowing treatments, sowing conditions, germination, seedling vigour
Abstract: A study was made to assess the influence of seed treatments and sowing conditions on germination and initial seedling vigour of Indian almond. Prior to germination the fruits were subjected to the following pre-sowing treatments viz., depulped fruit (manually) without water soaking, depulped fruit soaking in water followed by drying (S-D) for 7 days at 12 hours interval, depulped fruit S-D for 6 days at 12 hour interval and on 7th days soaking in different concentration of KNO3 (1 and 2%), Thiourea (1 and 2%), CaOCl2 (1 and 2%) and H2O2 (1 and 2%) for 12 hour and whole fruit (without depulping) served as control. The pre conditioned and control fruits were placed for germination in open sun light and partial shade condition. Sixty days after sowing, results revealed that the pre conditiong of depulped fruits i.e., soaking in water followed by drying (S-D) for 6 days at 12 hr interval and on 7th day soaking in 2% CaOCl2 for 12 hr enhanced germination (98%) of terminalia catappa open sunlight condition. Whole fruits took more number of days for emergence than depulped fruit.
Location: TE15, New Biological Sciences, IISc
Literature cited 1: None
Literature cited 2: None
ID: 58509
Title: Histological characterization of embryogenic and non-embryogenic calli of Jatropha curcas L
Author: Anjani, Arvind Shukla, Alok Shukla and S K Guru
Editor: Dr. P P Bhojvaid
Year: 2013
Publisher: The Indian Forester, Vol 139, No3, March 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: The Forestry
Keywords: Embryogenic callus, Totipotency, vessel tracts, somatic embryos, in vitro organogenesis
Abstract: Two types of callus proliferation namely, embryogenic (E) and non-embryogenic (NE) calli were obtained by culturing 2 to 3 days old leaf of Jatropha curcas L. (Pant Jatropha Selection -II) in modified MS medium supplemented with 2 ppm 2, 4-D and 0.5 ppm BAP. Scanning electron micrographs indicated distinct morphology of cell shape. NE cell shape was long-like tubular and loosely arranged cells. Embryogenic callus comprised nodular or knobby, quite deep embedded and tightly packed cell mass. Histological observations of callus sections revealed that E callus occurred on the surface as well as in the deeper regions of the callus. The abundance of vessel tracts in the callus was consistent with high content of vessel elements, rounded and cytoplasmically dense cells with totipotency. This may imply that nutrients are easily transported via these vessel tracts for the nourishment of growing somatic embryos or leafy structure. The number of vessel elements appeared to be a crucial factor in determining the E and NE calli development.
Location: TE15, New Biological Sciences, IISc
Literature cited 1: None
Literature cited 2: None
ID: 58508
Title: Contribution to the sedge and grass flora of Gujarat
Author: Rinku J Desai and Vinay M Raole
Editor: Dr. P P Bhojvaid
Year: 2013
Publisher: The Indian Forester, Vol 139, No3, March 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: The Forestry
Keywords: Grasses, sedges, South Gujarat, Rediscovery
Abstract: Diversity of grasses and sedges forms the major component of the forest. Field studies of the south Gujarat forest during last 3 years authors have collected 6 grasses and 2 sedges which were found to be noteworthy specimens. At the same time grasses were collected after 50-100 years.
Location: TE15, New Biological Sciences, IISc
Literature cited 1: None
Literature cited 2: None
ID: 58507
Title: Effect of gibberellic acid on seed germination and seedling growth behaviour in three desert tree species
Author: Renu Dhupper
Editor: Dr. P P Bhojvaid
Year: 2013
Publisher: The Indian Forester, Vol 139, No3, March 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: The Forestry
Keywords: Gibberellic acid, seed germination, seedling growth behaviour, Albizzia lebbeck, Acacia nilotica
Abstract: The present study was undertakne to assess the effect of different concentrations of gibberellic acid treatment on germination and seedling growth behaviour value in Albizzia lebbeck, Acacia nilotica and Prosopis cineraria. The results of the study clearly indicated that the seed germination and growth rate hastened to maximum by the application of 750 ppm GA3 for 24 hrs, indicated thereby that as the concentration increased, growth behaviour increases. The maximum growth attributes value was obtained at 750 ppm in Acacia nilotica.
Location: TE15, New Biological Sciences, IISc
Literature cited 1: None
Literature cited 2: None
ID: 58506
Title: Effectof pretreatments of seed for enhancing germination of Vitex altissima L
Author: K Sudhakara and K R Veenadevi
Editor: Dr. P P Bhojvaid
Year: 2013
Publisher: The Indian Forester, Vol 139, No3, March 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: The Forestry
Keywords: Vitex altissima, pre-treatment, wetting and drying, soaking, germination value
Abstract: Vitex altissima L., a threatened tree species with high conservation value in the Western Ghats of India, has low germination rates, hindering the restoration of this species. In addition to studying the drupe characteristics of V. altissima, various pre-treatments were conducted to enhance the seed germiantion rates. The treatments included alternate wetting and drying, soaking in GA3 solution and fire. The number of days for initiation and completion of germination varied from 10 to 16 and 74 to 93 respectively. Overnight soaking of the drupes in 300 ppm GA3 solution increased the germination percent, mean daily germination, peak value and germination value by 280 percent, 260 percent, 311 percent 1416 percent compared to the control. This was closely followed by GA3 solution 200 ppm soak overnight and 300 ppm soak for 30 min., alternate wetting and drying of drupes for ten dyas and straw fire treatment.
Location: TE15, New Biological Sciences, IISc
Literature cited 1: None
Literature cited 2: None
ID: 58505
Title: Effect of auxins on adventitious rooting from hardwood cuttings of Hippophae rhamnoides under Ladakh Himalayas
Author: Janifer Raj X, Basant Ballabh, M Pal Murugan, Priyanka Dhar, Amol B Tayade, Ashish R. Warghat, O. P Chaurasia and R B Srivastava
Editor: Dr. P P Bhojvaid
Year: 2013
Publisher: The Indian Forester, Vol 139, No3, March 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: The Forestry
Keywords: Plant growth regulators, Hardwood cuttings, vegetative propagation, Seabuckthorn (Hippophae rhamnoides)
Abstract: The rooting response of hardwood cuttings of Seabuckthorn (Hippophae rhamnoides) treated with auxins was studied during 2008-2009 to standardize the vegetative propagation. The effect of rooting hormones was observed for number of shoots, and roots, maximum length of primary root and rooting percentage. The results indicated that the dip application of 300 ppm IBA for 48 hours was optimum for treating the hardwood cuttings of Hippophae rhamnoides taken in March and will be beneficial for its successful propagation and cultivation under Ladakh Himalaya conditions.
Location: TE15, New Biological Sciences, IISc
Literature cited 1: None
Literature cited 2: None
ID: 58504
Title: N B Singh, Dinesh Kumar, Rajesh K Gupta, Pradeep Kumar and Kadam Singh
Author: N B Singh, Dinesh Kumar, Rajesh K Gupta, Pradeep Kumar and Kadam Singh
Editor: Dr. P P Bhojvaid
Year: 2013
Publisher: The Indian Forester, Vol 139, No3, March 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: The Forestry
Keywords: Populus dellioted , Provenance, intra specific breeding
Abstract: A study was made to compare th 11/2 years performance of seedlings belonging to Easter Gulf (EG), East central (EC) and Southeast Atlantic (SA) sub-regions of South-eastern USA. The collar diameters were in the order of SA>EG>EC. Variation among stands was significant for collar diameter and number of branches per metre of stem length. About 14700 seedlings belonging to 66 control-pollinated families and 5000 seedlings belonging to 20 open-pollinated families have been produced. Selection and cloning of promising genotypes was done. Testing of clones is in progress.
Location: TE15, New Biological Sciences, IISc
Literature cited 1: None
Literature cited 2: None