Surveying of aquatic insect diversity of Chandrabhaga river, Garhwal Himalayas

Sharma, Archana; Sharma, Ramesh C.; Anthwal, Ashish

doi:10.1007/s10669-007-9155-z

Cited by 7 publications

(9 citation statements)

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“…Relationship between the mean density of macro-invertebrates and water temperature was also found to be negatively correlated (r = -0.92, p [ 0.001) in the present study on Abbreviations: DI = diversity index, AT = air temperature, WT = water temperature, WV = water velocity, HMD = hydromedian depth, TU = turbidity, TA = transparency, CO = conductivity, TDS = total dissolved solids, DO = dissolved oxygen, FCO 2 = free carbon dioxide, pH = hydrogen ion concentration, HD = hardness, Alk = alkalinity, Chl = chloride, NO 3 = nitrate, PO4 = phosphate, Na = sodium, K = potassium the Tons river (Table 7). Similar results were also found during the study on the river Chandrabhaga (Sharma et al 2008). Maximum abundance of macro-invertebrates was found during spring season (February-March) in the Tons river, which may be due to increased growth efficiency of insects during this period in addition to hydrological attributes.…”

Section: Discussionsupporting

confidence: 86%

“…These macro-invertebrates were identified to the possible lowest taxonomic level. The qualitative analyses of macro-invertebrate samples were made with the help of Fraser (1933); Needham and Needham (1962); Hickel (1977); Macan (1974); Disney (1975); Hynes (1977); Elliott and Humpesch (1983); Kumar and Khanna (1984); Elliott et al (1988); Wallace et al (1990); Ward and Whipple (1992); Rao (1933), Biswas et al (1995); Edington and Hilldrew (1995); Mitra (1999); Mitra (2003); Ramkrishna and Mitra (2004); Sharma et al (2004Sharma et al ( , 2008. The density of macro-inveretbrates was calculated from all the five replicates collected from each sampling site.…”

Section: Methodsmentioning

confidence: 99%

“…Some of the studies have also been made in the different parts of the Indian subcontinent (Das 1971;Bisht and Das 1979a, b;Badola 1979;Mitra and Nandi 1998;Sharma 1986;Sharma et al 2004Sharma et al , 2008. However, no effort has been made so far to study the macro-invertebrates dwelling in the rivers of Doon Valley, India, inspite of the fact that the wide variety of microhabitats (rock surfaces, plant surfaces, leaf debris, logs, back waters, sandy sediments, crevices in gravel and pebbles) are available in the rivers of Doon Valley to aquatic macro-invertebrates.…”

Section: Introductionmentioning

confidence: 99%

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Surveying macro-invertebrate diversity in the Tons river, Doon Valley, India

2008

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A survey of macro-invertebrates and their monthly variations occupying the Tons river in Doon Valley was conducted from August 2003-July 2004.Macro-invertebrate collections and water samples were taken from three sampling stations every month during the period of study. All the hydrological attributes were measured monthly for 1 year. The present study showed that the water velocity, hydromedian depth, turbidity and dissolved oxygen and nature and size of the bottom substrates do play a major role in determining the macro-invertebrate diversity of Tons river. The ecological relevance of the measured hydrological attributes was investigated by comparing their degree of correlation with invertebrate density and diversity. The Shannon-Wiener index (H 0 ) of macro-invertebrates was found to be highest (3.60) during spring season (February and March) and lowest (2.59) during monsoon season (July and August). The high values of diversity index of macro-invertebrates at all the three sampling sites indicate diverse macro-invertebrate communities in the Tons river in Doon Valley, India.

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Section: Discussionsupporting

confidence: 86%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Surveying macro-invertebrate diversity in the Tons river, Doon Valley, India

2008

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“…A good number of research works is available on aquatic insects in different countries of the world. Important recent contributions are those of Anbalagan et al (2004), Hsu and Yang (2005), Majumder and Gupta (2005), Dinakaran and Anbalagan (2006), Sharma et al (2008), Thani and Phalaraksh (2008), Ohiokhioya et al (2009) and Das and Gupta (2010). Most of the closed water bodies in Chittagong university campus are not managed habitats.…”

Section: Introductionmentioning

confidence: 99%

Abundance and diversity of aquatic insects in two water bodies of Chittagong university campus

Nasiruddin

Azadi

Reza

2015

Bangladesh J. Zool.

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“…In our study we have found maximum EPT population at upstream sampling sites where the water quality is relatively clean. Sharma et al (2008) studied aquatic insect diversity of Chandrabhaga river, Garhwal Himalayas and reported that density and diversity of aquatic insects decreases with increase in turbidity, water temperature and decrease in dissolved oxygen.…”

Section: Bio-monitoring Of Water Quality Using Benthic Macro-invertebratesmentioning

confidence: 99%

Urban Growth and Water Quality in Thimphu, Bhutan

Giri¹,

Singh²

2013

J. Urb. and Environ. Engng

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Detailed study was undertaken in 2008 and 2009 on assessment of water quality of River Wang Chhu which flows through Thimphu urban area, the capital city of Bhutan. The water samples were examined at upstream of urban area, within the urban area and its downstream. The water samples were analyzed by studying the physico-chemical, biological and benthic macro-invertebrates. The water quality data obtained during present study are discussed in relation to land use/land cover changes(LULC) and various ongoing human activities at upstream, within the each activity areas and it’s downstream. Analyses of satellite imagery of 1990 and 2008 using GIS revealed that over a period of eighteen years the forest, scrub and agricultural areas have decreased whereas urban area and road network have increased considerably. The forest cover, agriculture area and scrub decreased from 43.3% to 42.57%, 6.88% to 5.33% and 42.55% to 29.42%, respectively. The LULC changes effect water quality in many ways. The water temperature, pH, conductivity, total dissolved solids, turbidity, nitrate, phosphate, chloride, total coliform, and biological oxygen demand were lower at upstream and higher in urban area. On the other hand dissolved oxygen was found higher at upstream and lower in urban area. The pollution sensitive benthic macro-invertebrates population were dominant at upstream sampling sites whereas pollution tolerant benthic macro-invertebrates were found abundant in urban area and its immediate downstream. The rapid development of urban infrastructure in Thimphu city may be posing serious threats to water regime in terms of its quality. Though the deterioration of water quality is restricted to a few localized areas, the trend is serious and needs proper attention of policy planners and decision makers. Proper treatment of effluents from urban areas is urgently needed to reduce water pollution in such affected areas to check further deterioration of water quality. This present study which is based on upstream, within urban area and downstream of Thimphu city can be considered as an eye opener.

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Surveying of aquatic insect diversity of Chandrabhaga river, Garhwal Himalayas

Abstract: Aquatic insect diversity in the Chandrabhaga,

Cited by 7 publications

References 18 publications

Surveying macro-invertebrate diversity in the Tons river, Doon Valley, India

Surveying macro-invertebrate diversity in the Tons river, Doon Valley, India

Abundance and diversity of aquatic insects in two water bodies of Chittagong university campus

Urban Growth and Water Quality in Thimphu, Bhutan

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