PA Azeez | EIA Division, SACON (original) (raw)

Papers by PA Azeez

Studies on river water quality in the Indian Himalayas are limited to a few larger ones; the smal... more Studies on river water quality in the Indian Himalayas are limited to a few larger ones; the smaller ones, although vital for a large section of people, mostly remain untouched. Therefore, Munawar Tawi a tributary of Chenab flowing through Rajouri district of Jammu region, Western Himalayas was selected for the study. Fifty-four water samples from 27 sites from Rajouri town and its upstream and downstream locations were collected during January and June 2014. Fourteen water quality parameters that include major cations and anions were analyzed. Water quality indicators such as SAR, %Na, RSC, MAR, KI, and PI were also calculated to determine suitability of water for irrigation. Piper plots identified four water types, of which Ca2+–Mg2+–HCO−3 was the dominant type in both the seasons. While in January, water samples varied across all the four types, in June only two types were seen (i.e. Ca2+–Mg2+–HCO−3 and Ca2+–Mg2+–Na+–HCO−3). Ludwig-Langelier plot also showed Ca2+–Mg2+–HCO−3 type as the dominant water type. Wilcoxon signed-rank test showed most of the parameters, except TDS, significantly high in January than in June. Kruskal-Wallis test showed significant variation in concentration among most of the parameters from upstream to the town and towards downstream. The water, with respect to the set standards (WHO, ISI, UNESCO), in both January and June, is found suitable for drinking and irrigation.

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Salubrious forests and luxurious orchards dominate the landscape of Dahanu taluka, in the coastal... more Salubrious forests and luxurious orchards dominate the landscape of Dahanu taluka, in the coastal region of northern Maharashtra (Plate 1 & 2). It has the distinction of being one of the very few last surviving coastal green havens amidst a highly denuded and industrialised neighbourhood. In spite of being a declared eco-fragile area under Dahanu notification of 1991 (Ministry of Environment and forests, Govt. of India) the Dahanu taluka continue to face various environmental challenges threatening the very sustenance of the natural ...

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Salim Ali Centre for Ornithology and Natural History (SACON), Coimbatore, Tamil Nadu, 1999

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An academic directory and search engine.

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An academic directory and search engine.

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Conclusions From the results of the present study, it is conclded that the pattern of decline ind... more Conclusions From the results of the present study, it is conclded that the pattern of decline indicated a causative relationship with the environmental pollution, especially atmospheric pollution and the consequent environmental changes. The Dahanu thermal power plant is the single ...

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Kolli hills are an isolated hill range of the discontinuous Eastern Ghats mountain system, situat... more Kolli hills are an isolated hill range of the discontinuous Eastern Ghats mountain system, situated in the Namakkal district of Tamil Nadu. Kolli hills has an area of 282.92 Sq.Km, out of which nearly 50% is under cultivation and remaining area includes reserve forests, plantations, mines ...

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CURRENT …, Jan 1, 2004

On the likely causes of Vulture decline.

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This is an anonymous brochure - highly relevant with observations

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Nature Precedings, 2008

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Annual recruitment pattern of fishes into the Keoladeo National Park (KNP) wetland system at Bhar... more Annual recruitment pattern of fishes into the Keoladeo National Park (KNP) wetland system at Bharatpur, India was investigated for a period of three consecutive years, i.e. 2003 through 2005. The study 1) assessed the temporal variation in the arrival pattern of fishes into the KNP, during monsoon and post monsoon seasons, and 2) explored the influence of the catchment processes on occurrence and abundance of fishes in the feeder canal. In total 40,766 individuals belonging to 8 families, 18 genera and 24 species were recorded. However, the species accumulation curve suggests the availability of 30 species in the catchments of KNP. This study recorded 7 new arrivals to the park, viz. Brachydanio albolineatus, Cyprinus carpio communis, Clarias gariepinus, Danio dangila, Mystus tengara, Rasbora daniconius and Securicula gora. The fish diversity was highest during 2004 (1.368) and the lowest during 2003 (0.934). The drift density ranged from 45.57 to 1.01 x 106 (individuals/100 m3 water) and the drift rate from 0.2 to 93.8 (number/second). The drift density and rate differed among the catches (ANOVA, P < 0.05) and were positively correlated with each other (r = 0.703, P < 0.05). The water speed (m/sec) was negatively correlated with total number of individuals per catch. Except B. albolineatus, Catla catla, C. gariepinus and Mastacembelus armatus, all other fish species were distinct and independent with respect to their abundance (χ2, P < 0.05). Of all the recorded species Puntius sophore was apparently distinct forming a separate cluster. Chanda ranga and Puntius sarana formed another cluster distinct from rest of the species. The quantity and duration of water release as a function of total rainfall influenced the composition of fishes and number entering the park. Rain and flood in the catchments increased the number of species in the feeder canal to the park. The decline in the fish species recruitment after the monsoonal flood in the catchment in comparison to the previous decades necessitates a review of the ongoing anthropogenic pressures on fishes, and habitat destruction for infrastructure development and urbanization in the catchments

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The background concentration of selected alkali and alkaline earth metals (sodium, potassium, cal... more The background concentration of selected alkali and alkaline earth metals (sodium, potassium, calcium and magnesium) in some macrophytes was explored in the wetland system of Keoladeo National Park, Bharatpur, India. Changes in the concentration of these ...

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