NOPR Collection:

Water quality variation and nutrient characteristics of Kodungallur-Azhikode Estuary, Kerala, India

2012-04-01T00:00:00Z

Title: Water quality variation and nutrient characteristics of Kodungallur-Azhikode Estuary, Kerala, India Authors: Jayachandran, P.R.; Nandan, S. Bijoy; Sreedevi, O.K. Abstract: Present study focussed on the water quality status in relation to various anthropogenic activities in the Kodungallur-Azhikode Estuary (KAE). Average depth of the estuary was 3.6 ± 0.2 m with maximum of 4.3 ± 0.4 m in the estuarine mouth. Dissolved oxygen showed an average of 5.1±1 mg/lin the water column, whereas the highest BOD value was noticed during monsoon period (3.1 ± 0.8 mg/l) whichcould be due to high organic enrichmentin the water column. pH displayed slightly alkaline condition in most of the stations and it varied from 7.2 ± 0.5 in Station 7 to 7.5 ± 0.5 in Station 1. Salinity in the estuary displayed mixo-mesohaline nature with clear vertical stratification. High river discharge could have resulted in nutrients and silt loading into the estuary, which makes a highly turbid water column particularly during the monsoon period, which limits light penetration and subsequent primary productivity. Turbidity in the water column showed an average of 20.2 ± 15.8 NTU. Estuary was nitrogen limited during post and pre monsoon periods. Nitrate-nitrogen content in the estuarine water gave negative correlation with ammonia. Page(s): 180-187

Tourist satisfaction of the environmental service quality for Tioman Island Marine Park

2012-04-01T00:00:00Z

Title: Tourist satisfaction of the environmental service quality for Tioman Island Marine Park Authors: Salleh, N.H.M; Othman, R; Sarmidi, T; Jaafar, A.H; Norghani, B.M.N Abstract: The purpose of this study is to evaluate the satisfaction level of tourists at the Tioman Island Marine Park (TIMP) toward the island’s environmental service quality offered. The measurement of tourist satisfaction is based on the mean analysis, i.e. the importance mean (expected mean) and the perceived mean (satisfactory mean). The difference between these mean values shows the gap value. The research result shows that all tourists (both locals and foreign) agree on satisfaction toward the TIMP‘s environmental service quality offered. However, the perceived mean is less than the expected mean. Hence, the gap analysis as well as the paired t-test finds that the mean values for most of the environmental service quality are negative. These negative values indicate a relatively low level of the tourist satisfaction. Page(s): 173-179

Isolation and salt tolerance of halophilic fungi from mangroves and solar salterns in Goa - India

2012-04-01T00:00:00Z

Title: Isolation and salt tolerance of halophilic fungi from mangroves and solar salterns in Goa - India Authors: Nayak, Shweta S; Gonsalves, Valerie; Nazareth, Sarita W Abstract: High salt tolerant fungal genera were isolated from mangroves and solar salterns of Goa. These belonged mainly to the genus Aspergillus; some Penicillium and a few Eurotium and Hortaea. Most of the isolates were facultative halophiles, euryhaline in nature, not having an absolute requirement of added salt for growth. They able to grow even at high salt concentrations and showing optimal growth only in presence of added salt in the medium. Only one species, A. penicillioides, had an absolute requirement of added salt in the medium for growth and were termed as obligate halophiles. Page(s): 164-172

Isolation and identification of Vibrio spp. in diseased Channa punctatus from aquaculture fish farm

2012-04-01T00:00:00Z

Title: Isolation and identification of Vibrio spp. in diseased Channa punctatus from aquaculture fish farm Authors: Sankar, Ganesh. P; Saravanan, J.; Krishnamurthy, P.; Chandrakala, N.; Rajendran, K Abstract: During the present study Vibrio spp. were isolated from infected Channa punctatus and physico-chemical properties were analyzed from various ponds. Among the twenty ponds under study, four were contaminated by agricultural wastewater. The microbial communities in all these ponds appeared to be dominated by V. harveyi, V. parahaemolyticus, V. fischeri and V. cholerae. Out of these C. punctatus was mostly infected by V. cholerae, V. parahaemolyticus and V. harveyi. It can be transmitted to all fishes and infect fishes of other ponds. Page(s): 159-163