scholarly journals Revealing the socio-economic vulnerability and multi-hazard risks at micro-administrative units in the coastal plains of Tamil Nadu, India

2021 ◽  
Vol 12 (1) ◽  
pp. 605-630
Author(s):  
Balasubramani Karuppusamy ◽  
Sekar Leo George ◽  
Kanagarajan Anusuya ◽  
Ravichandran Venkatesh ◽  
Periasamy Thilagaraj ◽  
...  
2021 ◽  
Author(s):  
Rasme Allat V ◽  
Leo George Sekar ◽  
Arun Prasad Kumar ◽  
Balasubramani Karuppusamy

Abstract The coastal plains of Tamil Nadu (India) are highly vulnerable zone for coastal floods, the most common disaster, experienced every year. In the study, the coastal plain is delineated through a watershed approach with 5020 micro-administrative units covering an area of about 3,000 sq.km. A comprehensive flood risk assessment was carried out by preparation of hazards, vulnerability, and exposure layers using multiple data sources including from field surveys, satellite data and secondary data sources. The flood prone regions are delineated initially from Sentinel-1 Synthetic Aperture Radar data coupled with SRTM-DEM on a probability scale (0–1) and validated with the District Disaster Management Plans of 13 coastal districts. In addition, National Resources Conservation Service – Curve Number (NRCS-CN) method was adopted to estimate surface runoff potential for flood risks. The vulnerability and exposure of the population to the flood hazards was determined using census and household data based indicators. A focused group interview was conducted at 514 locations targeting deprived communities of all major settlements of the study area. The public perceptions were used to understand the flood risks and to validate the hazard and vulnerability layers. To estimate location-specific flood risks within the micro-administrative units, built-up areas with different categories were delineated and intersected with the flood hazard. The amalgamation of results shows that very high flood risk prevails in the northern parts of coastal Tamil Nadu, especially the stretch between Chennai and Cuddalore. In addition to provide a baseline datasets for the first time at micro-administrative units for entire coastal plains of Tamil Nadu, the study offers a pragmatic methodology for sustainable development measures in general and flood risk management in particular.


Author(s):  
Anushiya Jeganathan ◽  
Ramachandran Andimuthu ◽  
Palanivelu Kandasamy

Zootaxa ◽  
2019 ◽  
Vol 4691 (2) ◽  
pp. 188-194
Author(s):  
KARUNNAPPILLI SHAMSUDHEEN NAFIN ◽  
NJAREKKATTIL VASU SUMESH ◽  
PUTHOOR PATTAMMAL SUDHIN ◽  
AMBALAPARAMBIL VASU SUDHIKUMAR

The genus Phoroncidia Westwood 1835 is currently represented by 81 species and is cosmopolitan in distribution. Currently, four species are known from India, namely Phoroncidia aculeata Westwood 1835, Phoroncidia maindroni (Simon 1905), Phoroncidia septemaculeata O. Pickard-Cambridge 1873 and Phoroncidia testudo (O. Pickard-Cambridge 1873) (World Spider Catalog 2019). P. septemaculeata O. Pickard-Cambridge 1873 was described based on a few specimens collected by Mr G. H. K. Thwaites in 1871 from Sri Lanka and it was mostly derived from the somatic features of the species. Recently, Patil et al. (2018) reported two subadult males presumed to be Phoroncidia septemaculeata from the Maharashtra state in India. Until now, no mature specimen of the species has been reported and its genitalia remains unknown. This paper provides a detailed redescription of P. septemaculeata, including illustrations of male and female genitalia for the first time, based on fresh materials collected from different localities in the Coastal Plains and Western Ghats of Kerala state and Coastal plains of Tamil Nadu. Additionally, the current distributional range and new records of the species is mapped. 


Author(s):  
Irena Mocanu ◽  
Bianca Mitrică ◽  
Monica Dumitrașcu ◽  
Nicoleta Damian ◽  
Mihaela Persu ◽  
...  

The effects of extreme climate phenomena (mainly heat-related) on agricultural crops, infrastructure and human health have become increasingly severe, varying between regions in response to the differences in the socio-economic and environmental features. In Romania, heat-related phenomena (i.e. drought) are affecting extended areas in the southern and south-eastern parts where the study area (Dobrogea) lies. The paper aims to develop a multi-criteria vulnerability assessment. Over 20 indicators were selected and processed in order to assess the vulnerability to heat-related phenomena using the statistical data available at local administrative units (LAU). The indicators were grouped into the three key components of vulnerability (potential exposure, sensitivity and adaptive capacity) and on two dimensions (socio-economic and environmental), resulting two indexes: Socio-Economic Vulnerability (SEV) and Environmental Vulnerability (EV). Finally, an integrated Heat Vulnerability index (HV) (using Hull score, average 50 and standard deviation 14) was computed.


2017 ◽  
Vol 225 (4) ◽  
pp. 324-335 ◽  
Author(s):  
Dimitrios Barkas ◽  
Xenia Chryssochoou

Abstract. This research took place just after the end of the protests following the killing of a 16-year-old boy by a policeman in Greece in December 2008. Participants (N = 224) were 16-year-olds in different schools in Attiki. Informed by the Politicized Collective Identity Model ( Simon & Klandermans, 2001 ), a questionnaire measuring grievances, adversarial attributions, emotions, vulnerability, identifications with students and activists, and questions about justice and Greek society in the future, as well as about youngsters’ participation in different actions, was completed. Four profiles of the participants emerged from a cluster analysis using representations of the conflict, emotions, and identifications with activists and students. These profiles differed on beliefs about the future of Greece, participants’ economic vulnerability, and forms of participation. Importantly, the clusters corresponded to students from schools of different socioeconomic areas. The results indicate that the way young people interpret the events and the context, their levels of identification, and the way they represent society are important factors of their political socialization that impacts on their forms of participation. Political socialization seems to be related to youngsters’ position in society which probably constitutes an important anchoring point of their interpretation of the world.


ENTOMON ◽  
2020 ◽  
Vol 45 (3) ◽  
pp. 181-188
Author(s):  
T. Sharmitha ◽  
C. Gailce Leo Justin ◽  
S. Sheeba Joyce Roseleen ◽  
P. Yasodha

Three species of parasitoids viz., Telenomus dignus Gahan, Trichogramma japonicum, Ishii and Tetrastichus schoenobii Ferriere were recorded from the egg masses of rice yellow stem borer, Scirpophaga incertulas (Walker) in a field study. The extent of parasitism was high during Rabi (43.33 – 93.33 %) and low during Kharif (0 - 40.00 %). Parasitism by T. dignus was maximum in October (50.00 %), T. japonicum, in November (23.08 %) and T. schoenobii in February (55.55 %). dignus and T. schoenobii in combination parasitized maximum number of egg masses (41.82 %). Multiple parasitism by the three species was high in December (8.33 %) and January (7.14%). Parasitic potential was maximum, when T. schoenobii alone parasitised the egg masses followed by T. dignus and T. schoenobii in combination. Host density in the field influenced the extent of parasitism.


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