scholarly journals Vaduvur and Sitheri lakes, Tamil Nadu, India: conservation and management perspective

2021 ◽  
Vol 13 (6) ◽  
pp. 18497-18507
Author(s):  
V. Gokula ◽  
P. Ananth Raj

Wetlands are declining globally.  Hence, it is reasonable to assume that most existing wetlands are impacted to some degree by human land-use that in turn caused population declines in many wetland-dependent taxa.  The National Wetland Atlas has classified Tamil Nadu as a wetland-rich state as they occupy 6.92% of geographic area.  However, studies on wetlands are limited in Tamil Nadu.  Hence, an attempt was made to identify the threats to the Vaduvur and Sitheri lakes and their associated fauna.  In total, 118 species of birds belonging to 87 genera, 48 families and 18 orders in Vaduvur Lake and 87 species of birds belonging to 71 genera, 48 families and 16 orders in Sitheri Lake were recorded.  A total of 28 zooplankton species were recorded in both the lakes comprising 14 species of rotifers, six species of cladocerans, five species of copepods, two species of ostracods, and one species of protozoa.  A total of 15 species of fishes were identified from the sellers who catch fishes from the Sitheri Lake.  The physico-chemical parameters of water varied according to the seasonal fluctuations in rainfall pattern.  In general, wetland management for waterbirds of these two lakes should focus on providing suitable nesting habitats and available food resources for dependant avifauna.  Management of invertebrates, amphibians, and fishes in these two lakes is one technique that can be used to provide foraging opportunities for waterbirds.  An integrated approach and increased co-operation would result in the rational use of this freshwater resource leading to improved standards of living around this lake. 

2012 ◽  
Vol 2 (10) ◽  
pp. 1-3
Author(s):  
Gyaneswar Bhuyan ◽  
◽  
Dr. R. Anandhan Dr. R. Anandhan ◽  
V. kavitha V. kavitha

2018 ◽  
Vol 75 (9) ◽  
pp. 1357-1368 ◽  
Author(s):  
Christopher L. Cahill ◽  
Stephanie Mogensen ◽  
Kyle L. Wilson ◽  
Ariane Cantin ◽  
R. Nilo Sinnatamby ◽  
...  

Catch-and-release regulations designed to protect fisheries may fail to halt population declines, particularly in situations where fishing effort is high and when multiple stressors threaten a population. We demonstrate this claim using Alberta’s Bow River, which supports a high-effort rainbow trout (Oncorhynchus mykiss) fishery where anglers voluntarily release >99% of their catch. We examined the population trend of adult trout, which were tagged and recaptured using electrofishing surveys conducted intermittently during 2003–2013. We constructed Bayesian multisession capture–recapture models in Stan to obtain abundance estimates for trout and regressed trend during two periods to account for variation in sampling locations. General patterns from all models indicated the population declined throughout the study. Potential stressors to this system that may have contributed to the decline include whirling disease (Myxobolus cerebralis), which was detected for the first time in 2016, notable floods, and release mortality. Because disease and floods are largely uncontrollable from a management perspective, we suggest that stringent tactics such as angler effort restrictions may be necessary to maintain similar fisheries.


2013 ◽  
Vol 70 (2) ◽  
pp. 387-398 ◽  
Author(s):  
Chiara Papetti ◽  
Antonio Di Franco ◽  
Lorenzo Zane ◽  
Paolo Guidetti ◽  
Valeria De Simone ◽  
...  

Abstract Papetti, C., Di Franco, A., Zane, L., Guidetti, P., De Simone, V., Spizzotin, M., Zorica, B., Čikeš Keč, V. and Mazzoldi, C. 2013. Single population and common natal origin for Adriatic Scomber scombrus stocks: evidence from an integrated approach – ICES Journal of Marine Science, 70: 387–398. In order to implement proper fishery management strategies aimed at avoiding stock declines, information about connectivity among stocks and populations is critically required. In this perspective, the present study investigated population structure of the Atlantic mackerel Scomber scombrus in the northern–central Adriatic Sea by integrating multiple approaches (analysis of fisheries data, population genetics, and otolith chemistry). Monthly data of fishery landings indicate a latitudinal trend along the western Adriatic coast, with Atlantic mackerel disappearing from the northern waters in winter, corresponding to the reproductive season. Population genetic analyses by genotyping of eight microsatellites clearly point to the presence of a single panmictic population in the northern–central Adriatic Sea. Otolith cores of samples from the northern–central Adriatic were chemically homogeneous, suggesting a common spawning ground. These results strongly suggest that Atlantic mackerel perform an autumn–winter migration in the northern–central Adriatic Sea, from the northern to the central sector, to reach a single spawning ground, and that a single population is present in this area. Considering that S. scombrus has shown a marked decline in the last 40 years in the Adriatic, this study highlights a potential high vulnerability to collapse by overfishing for the Atlantic mackerel stocks in this geographic area.


Author(s):  
Andrzej Potoczek

Abstract Security is a system of interrelated elements that interact with each other and must be effectively managed. At the same time, security is one of the key areas of administrative activity. Nowadays, an integrated approach to the development process in the context of shaping local security policy becomes extremely important. Integrated management is based on a territorial-functional approach and exposes mutually balanced links between the economic, social and environmental systems of which security is a common element.


2014 ◽  
Vol 16 ◽  
pp. 145-156 ◽  
Author(s):  
B. Elayaraj ◽  
M. Selvaraju

The present study deals with the statistical analysis of physico-chemical parameters and cyanophycean members of two pond water quality of Chidambaram, Cuddalore district (Tamil Nadu). The qualities of pond water were analyzed for six months. Eleven important parameters were included in statistical analysis. The qualities of pond water have been assessed by calculating mean, standard deviation and correlation coefficient. Correlation studies of hydrobiology with physico-chemical parameters revealed that the relationship between phytoplankton density in general and that of the specific groups are highly complex and often controlled by interactions of different factors. In the both pond water the correlation coefficient test revealed that cyanophycean members positively correlated with temperature, pH, CO2, alkalinity, hardness, nitrate, BOD and COD at 1 % and 5 % level significant, where as it is negatively correlated with acidity and dissolved oxygen. In the present study it can be concluded that the cyanophycean members are highly tolerant organisms. They prefer to grow at higher temperatures and in highly alkaline, BOD and COD waters. Hence they can with stand high levels of contaminated waters of Thillai Kali Kovil pond, when compared to Ilamiyakkinar Kovil pond.


2016 ◽  
Vol 6 (2) ◽  
pp. 42
Author(s):  
Renju Mathai ◽  
Thangaraja Arumugam

It has been observed that training in the hospitality industry becomes a challenge as the employees in this industry have been significantly increased in recent years. Employees are trained to perform well in the organizations while they are also paid to perform in a specific department. It’s the combination of experience, calibre, knowledge, skills and abilities that pushes you forward to the particular position to perform in any organization.  The hospitality industry expects a high demand in the area of performing and delivering a high quality of service to the guests. Bearing in mind that the hotels needs a constant and regular business to sustain the market. In order to be able to have a strong and healthy competition environment the hotels have come out with a strategy of making and pushing things from the management perspective to deliver and have a high performance by the employees. This paper is to investigate how employees in hotels are encountering emotions with the guests that lead them to underperform in various levels and to see whether training can be applied to increase their performance over time. The main objective of this paper is to investigate the role of Q metric in the training of emotional intelligence competence. The population sample was drawn among the employees of the hospitality industry in Tamilnadu to identify the significance of Q metric. A model was developed by using analysis of moment structure (AMOS). A model is fit to ensure the model for Q metric approach in the training of Emotional intelligence competence among the employees of the hospitality industry, Tamilnadu. Recommendations have been discussed and proposed for future use to any research in this field of academic.


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