Enter records

ID: 57772
Title: Detection of sea-surface temperature anomaly in the equatorial region of Bay of Bengal using indigenous Lagrangian drifter
Author: Tata Sudhakar, S K Dash, R R Rao, R Srinivasan, Shijo Zacharia, M A Atmanand, B R Subramaniam, Shailesh Nayak
Editor: P Balaram
Year: 2013
Publisher: Current Science Association, Vol 104, No 1, 10 January 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: Current Science
Keywords: None
Abstract: None
Location: TE 15, Biologicalsciences Building, IISc
Literature cited 1: None
Literature cited 2: None

ID: 57771
Title: Swertia chirayita (Roxb. ex Fleming) Karsten on the verge of extinction in the Himalayan region
Author: Vijay K Purohit, Yateesh M Bahuguna, Deepti Tiwari, Alka Tiwari, Harish C Andola, Jagmohan S Negi, Rajendra S Chauhan
Editor: P Balaram
Year: 2013
Publisher: Current Science Association, Vol 104, No 1, 10 January 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: Current Science
Keywords: None
Abstract: None
Location: TE 15, Biologicalsciences Building, IISc
Literature cited 1: None
Literature cited 2: None

ID: 57770
Title: Field studies in botany are essential
Author: David N Sen
Editor: P Balaram
Year: 2013
Publisher: Current Science Association, Vol 104, No 1, 10 January 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: Current Science
Keywords: None
Abstract: None
Location: TE 15, Biologicalsciences Building, IISc
Literature cited 1: None
Literature cited 2: None

ID: 57769
Title: Natural Resources: Technology, Economics and Policy
Author: None
Editor: P Balaram
Year: 2013
Publisher: Current Science Association, Vol 104, No 1, 10 January 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: Current Science
Keywords: None
Abstract: None
Location: TE 15, Biologicalsciences Building, IISc
Literature cited 1: None
Literature cited 2: None

ID: 57768
Title: Palynological indicators of mangrove habitat in the Kolleru Lake region during the Early to Middle Holocene
Author: A Bhattacharyya, K Nageswara Rao, S Misra, K Ch V Nagakumar, G Demudu and B Hema Malini
Editor: P Balaram
Year: 2013
Publisher: Current Science Association, Vol 104, No 1, 10 January 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: Current Science
Keywords: Mangrove, palynology, palaeoclimate, sediment units
Abstract: Auger drilling up to about 10-12 m depth at four locations in the periphery of the Kolleru Lake revealed three sediment units- upper coastal alluvium (Unit 3), middle black sticky clay with decomposed plant material (Unit 2) and lower yellow amorphous clay with concretions and dark brown hard clay iwth gypsum crystals (Unit 1) Palynological analysis and 14C dating of sediments revealed prevalence of mangrove pollen in Unit 2 during 10,842 - 6,068 cal yrs BP. Subsequently, absence of mangrove pollen and presence of charcoal pieces in Unit 3 indicate terrigenous inputs into the area thereafter. The study reports on the possible occurrence of mangrove habitat in the Kolleru Lake region during the Early to Mid-Holocene.
Location: TE 15, Biologicalsciences Building, IISc
Literature cited 1: None
Literature cited 2: None

ID: 57767
Title: Past and general circulation model - driven future trends of climate change in Central Indian Punjab: ensuing yield of rice-wheat cropping system
Author: S K Jalota, Harsimran Kaur, S S Ray, R Tripathy, B B Vashisht and S K Bal
Editor: P Balaram
Year: 2013
Publisher: Current Science Association, Vol 104, No 1, 10 January 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: Current Science
Keywords: Climate change trends, crop yields, General Ciruculation Models, rice-wheat system
Abstract: Climate data recorded for the last 40 years (1971 - 2010) at meterological station of Punjab Agricultural University, Ludhiana (Central Indian Punjab) and future changes in climate data derived from three General Circulation Models (GCMs), viz. HadCM3, CSIRO-Mk2 and CCCMA-CGCM2, were analysed. Past data showed increase in temperature, decrease in open pan evaporation and irregulr trends in rainfall. Amongst GCMs, the HadCM3 model showed relatively more increase in minimum than maximum temperature. Averaged across GCMs and scenarios, CropSyst model-simulated crop yields of rice-wheat system showed 7%, 15% and 25% decrease in rice and 10%, 20% and 34% in wheat for the years 2020, 2050 and 2080 respectively.
Location: TE 15, Biologicalsciences Building, IISc
Literature cited 1: None
Literature cited 2: None

ID: 57766
Title: Simultaneous mesospheric gravity wave measurements in OH night airglow emission from Gadanki and Kolhapur- Indian low latitudes
Author: R N Ghodpage, A Taori, P T Patil and S Gurubaran
Editor: P Balaram
Year: 2013
Publisher: Current Science Association, Vol 104, No 1, 10 January 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: Current Science
Keywords: Airglow emissions, low latitudes, mesospheric gravity, wave measurements
Abstract: Simultaneous photometric measurements of mesospheric OH night airglow emissions have been made from two stations, Gadanki (13.50N, 79.20E) and Kolhapur (16.80N, 74.20E). India during February-March 2010 to study teh differences in the observed wave characteristics. Our results reveal the wave peri-odichities to be similar at both locations, which ranged from 2 to 8 h. The inferred Krassovsky parameters (? = l?l ei?) show large variability, with ranges of l?l varying from 2.4 to 4.2 over Gadanki and from 2.2 to 6.3 over Kolhapur. The phase values of Krassovsky parameter, ?, exhibit variation from -1010 to -2020 in Kolhapur data and -380 to -930 in Gadanki data. The deduced vertical wavelengths indicate that the observed waves were propagating upwards with vertical wavelengths varying from -26 to -62 km. We note that the observed night-time OH emissions profile shows the peak of emissions at1 85 km in Kolhapur and at ~90 km in Gadanki in the corresponding months. These observed characteristics of waves and the cause of noted differences are discussed.
Location: TE 15, Biologicalsciences Building, IISc
Literature cited 1: None
Literature cited 2: None

ID: 57765
Title: Boron- a critical nutrient element for plant growth and productivity with reference to temperate fruits
Author: Mumtaz A Ganie, Farida Akhter, M A Bhat, A R Malik, Jan Mohd Junaid, M Abas Shah, Arif Hussain Bhat and Tauseef A Bhat
Editor: P Balaram
Year: 2013
Publisher: Current Science Association, Vol 104, No 1, 10 January 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: Current Science
Keywords: Boron, fruit quality and yield, photosynthesis, pollination, respiration
Abstract: The exciting developments in boron research in the past few years greatly contributed to better understanding of the role of boron in plants. Isolation and characterization of the boron-polysaccharide complex from cell walls provided the first direct evidence for boron crosslinking of pectin polymers. Inhibition and recovery of proton release upon boron withdrawal and restitution in plant culture medium demonstrated boron involvement in membrane processes. Rapid boron-induced changes in membrane function could be attributed to boron-complexing membrane constituents. Molecular studies of boron nutrition have been initiated by the discovery of a novel mutant of Arabidopsis thaliana with an altered requirement for boron. Besides this, boron fertilization regardless of application mode increases pollination, fruit set, fruit yield and quality of temperate fruit yield of many fruits by decreasing physiological disorders to a great extent. Positive responses to boron application throughout the world provides clear evidence of boron deficiency. Climate, particularly high light intensity and low temperature are factors that need to be considered in relation to the occurrence of boron deficiency. Boron deficiency can be readily prevented and corrected by both soil and foliar applications.
Location: TE 15, Biologicalsciences Building, IISc
Literature cited 1: None
Literature cited 2: None

ID: 57764
Title: Gross primary production, ecosystem respiration and net ecosystem exchange in Asian rice paddy: an eddy covariance-based approach
Author: P Bhattacharyya, S Neogi, K S Roy and K S Rao
Editor: P Balaram
Year: 2013
Publisher: Current Science Association, Vol 104, No 1, 10 January 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: Current Science
Keywords: Ecosystem respiration, eddy covariance, gross primary production, net ecosystem exchange, rice paddy
Abstract: Carbon dioxide (CO2) exchange between the terrestrial ecosystems and the atmosphere is one of the major processes affecting atmospheric CO2 concentration. In various ecosystems in the world long-term observations of CO2 exchange have been made for assessing the role of terrestrial ecosystems in the present-day global CO2 budget and to predict its changes in the future climatic scenario. The eddy covariance (EC) system can provide a measure of net ecosystem exchange (NEE), which can be partitioned into gross primary production (GPP) and ecosystem respiration (RE) using mathematical modelling approach helpful for characterization of ecosystem carbon budgets. The EC technique for measuring CO2, water vapour and energy fluxes between the biosphere and the atmosphere is widely used in various regional networks. Presently, more than 400 EC sites are operational worldwide measuring carbon exchange in different biomes and climatic conditions at high temporal resolution. Rice paddy fields are widespread in monsoon Asia and teh carbon exchange between paddy field and the atmosphere is greatly influenced by cultivation and field management practices. In this review, an attempt has been made to summarize NEE, GPP and RE with the help of EC system in Asian rice paddies focusing on Co2 exchange between the biosphere and the atmosphere.
Location: TE 15, Biologicalsciences Building, IISc
Literature cited 1: None
Literature cited 2: None

ID: 57763
Title: The river Saraswati was a Himalayan-born river
Author: K S Valdiya
Editor: P Balaram
Year: 2013
Publisher: Current Science Association, Vol 104, No 1, 10 January 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: Current Science
Keywords: Channel fills, climate change, glacier-fed and monsoonal rivers, neotectonic movements
Abstract: Giosan and co-workers contend that the ' mythical ' Saraswati River was not a glacier -fed Himalayan river. Questioning the findings of Indian archaeologists and geologists, they postulate that the Saraswati was a monsoonal river originating in the foothills of the Siwalik Hills and did not water the heartland of the Harappan Civilization. Reduction in its discharges due to weakening of the monsoon rains resulted in its drying up, leading to the demise of the Harappa Civilization. I have put forth a number of evidence gathered in the last 10-15 years to show that their arguments are not acceptable and by giving eloquent examples have asserted that the climate is not hte only cause of all changes occurring on the surface of the Earth, and that there are other factors, some more powerful, which bring about changes.
Location: TE 15, Biologicalsciences Building, IISc
Literature cited 1: None
Literature cited 2: None

ID: 57762
Title: Mass stranding of pilot whale Globicephala macrorhynchus Gray, 1846 in North Andaman coast
Author: C Raghunathan, S Senthil Kumar, S Dinesh Kannan, Tamal Mondal, C R Sreeraj, R Raghuraman, K Venkataraman
Editor: P Balaram
Year: 2013
Publisher: Current Science Association, Vol 104, No 1, 10 January 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: Current Science
Keywords: None
Abstract: None
Location: TE 15, Biologicalsciences Building, IISc
Literature cited 1: None
Literature cited 2: None

ID: 57761
Title: Solar energy for information technology: challenges and possibilities
Author: Shrisha Rao and Pragati Agrawal
Editor: P Balaram
Year: 2013
Publisher: Current Science Association, Vol 104, No 1, 10 January 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: Current Science
Keywords: Information Technology (IT), solar power,
Abstract: Information technology (IT) equipment is already estimated to account for about 2% of the global energy consumption, and this figure is only expected to rise. However, the use of solar power for IT is yet to receive the attention it deserves from researchers, and there is a vast array of important problems to be addressed to enable the use of solar and other alterantive energy sources in IT. In this note, we take the view that a broad systems perspective of solar power generation and utilization (rather than looking only at component technologies such as PV, solar-thermal, etc) is essential, and mention major directions which in our opinion merit attention in this regard.
Location: TE 15, Biologicalsciences Building, IISc
Literature cited 1: None
Literature cited 2: None

ID: 57760
Title: Sustainable water management in India with reference to flow irrigation projects
Author: Nilakantha Rath
Editor: P Balaram
Year: 2013
Publisher: Current Science Association, Vol 104, No 1, 10 January 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: Current Science
Keywords: None
Abstract: None
Location: TE 15, Biologicalsciences Building, IISc
Literature cited 1: None
Literature cited 2: None

ID: 57759
Title: Biowaste utilization for improving health and productivity of acid soils in North East India
Author: D J Rajkhowa and Manoj-Kumar
Editor: P Balaram
Year: 2013
Publisher: Current Science Association, Vol 104, No 1, 10 January 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: Current Science
Keywords: None
Abstract: None
Location: TE 15, Biologicalsciences Building, IISc
Literature cited 1: None
Literature cited 2: None

ID: 57758
Title: Loktak, the largest floating lake of the world, needs restoration
Author: Y Tunginba Singh, Sudeshna Mazumdar-Leighton, Suresh Nair
Editor: P Balaram
Year: 2013
Publisher: Current Science Association, Vol 104, No 1, 10 January 2013
Source: Centre for Ecological Sciences
Reference: None
Subject: Current Science
Keywords: None
Abstract: None
Location: TE 15, Biologicalsciences Building, IISc
Literature cited 1: None
Literature cited 2: None