scholarly journals Effect of temperature on the occurrence of Desmids in a lentic water body of Bhopal district, M.P. with reference to seasonal variation in the physico- chemical parameters

2014 ◽  
Vol 15 (3) ◽  
pp. 89-93
Author(s):  
Bhawana Agrawal ◽  
Pramod Patil

The aim of the study was to assess the effect of temperature on the occurrence of desmids on a lentic waterbody viz. Jawahar Bal Udhyan Pond situated in northern direction of the Bhopal district with reference to its seasonal variation in physico-chemical parameters. Water temperature of the lentic water body varied between 16.2°C to 31.9°C in winter and summer season respectively. During the present study period a total of 18 desmid taxa of 6 genera were encountered in which Cosmarium dominated in terms of species diversity. Desmids occurred maximum in winter season i.e., from December to February and minimum in post monsoon season i.e., from October and November. Different species of Closterium, Euastrum, Staurastrum, Pleurotaenium, and Sphaerozosma are considered as pollution tolerant species and the presence of all these species and result of physico-chemical parameters indicates the meso-eutrophic condition of the waterbody.

2021 ◽  
Vol 16 (3) ◽  
Author(s):  
J.V.S. Rauthan ◽  
Sangeeta Rawat ◽  
Gopal Chhetri

The present study is carried out during the period of January, 2020 to December, 2020 to investigate seasonal variation of the zooplankton in Song river, Gularghati, District Dehradun. During study period total 22 zooplankton species were found belonging to different groups. Protozoa consist of 8 species, rotifera consist of 7 species, copepoda consist of 5 species and two species of ostrocoda. The number of zooplankton was highest in summer season followed by winter and monsoon season.


2016 ◽  
Vol 15 (4) ◽  
pp. 35-47
Author(s):  
Nafeesa Begum ◽  
H M Ashashree ◽  
H A Sayeswara

The present study deals with phytoplankton population of Navule pond in Shivamogga during September 2014 to August 2015. Blue-greens constituted the major group (41.75%) followed by Chlorococcalas (36.68%), Diatoms (13.36%), euglenoids (7.35%) and Desmids (0.86%). The phytoplankton community was composed of 11 species of Blue-greens, 20 species of Chlorococcales, 18 species of Diatoms, 11 species of Euglenoids and 08 species of Desmids. Each group of phytoplankton showed different peak periods, the summer season produces relatively more phytoplankton than rainy and winter season. The variations in physico-chemical parameters are responsible for the fluctuation of quantity of phytoplankton.  The dominant genera recorded on the pond were Anabaenopsis sp., Ocillatoria sp., Euglena sp., and Phacus. Some of the pollution tolerant species identified during the present study are Scenedesmusquadricauda, Coelastrum sp., Tetraedonmuticum, Ocillatoria sp., Phormidium sp., Microcystis sp., Anabaena sp., Navicula sp., Synedra ulna, Cyclotella sp., and Pinnularia sp. In the present study Microcystisaeroginosa was recorded indicates the civic pollution.


2013 ◽  
Vol 3 (1) ◽  
pp. 38-44
Author(s):  
Purna Bahadur Chhetri ◽  
Damodar Thapa Chhetry

The physico-chemical parameters and primary productivity of a fish pond of Madhumara, Biratnagar was studied from October 2007 to September 2008. The maximum air and water temperature and water transparency were recorded in rainy season, whereas maximum pH, dissolved oxygen and chloride were recorded in winter season.  Free carbon dioxide and total hardness were maximum in summer season. The gross primary productivity, net primary productivity and community respiration were found maximum in winter season.


2013 ◽  
Vol 1 ◽  
pp. 19-25
Author(s):  
Damodar Thapa Chhetry ◽  
Joydeb Pal

This paper deals with the physico-chemical parameters of the Titrigachhi daha. The maximum air temperature was recorded in rainy season but the water temperature was maximum in summer and lowest in winter season. Transparency, pH, dissolved oxygen, total alkalinity, total hardness were maximum in winter season. Free carbondioxide, chloride and biological oxygen demand were maximum in summer season. The minimum transparency, total alkalinity, total hardness and chloride were recorded in rainy season. Dissolved oxygen and pH, was minimum in summer season. The minimum carbondioxide and BOD were recorded in winter season. Air temperature, water temperature, free carbondioxide, and biological oxygen demand showed positive and significant correlation with each other. Similarly, transparency, pH, dissolved oxygen, total hardness showed positive and significant correlation with each other. Total alkalinity showed positive and significant correlation with chloride. DOI: http://dx.doi.org/10.3126/njbs.v1i0.7465 Nepalese Journal of Biosciences 1: 19-25 (2011)


Author(s):  
Manish Kukreti ◽  

Present paper reports Home range and distance covered of Chukar partridge at mandal valley, Garhwal Himalaya from November 2018 to October 2019. During the study period, average home range (altitude M) of Chukar was 1756.75±7.75 and average distance covered from water source 69.52±6.76 (M), maximum range observed in month of June (1812±8.0) while minimum range observed in November month (1708±5.0) respectively. Maximum distance covered observed in August month (99.04±11.42) and minimum distance covered recorded in month of May (41.10±4.83). Seasonal variation was also observed, Maximum range in Summer season (1803±10.33)and minimum observed in winter season (1713.33±8.0), seasonal variation also observed in monsoon and post monsoon season (84.85± 8.77) while minimum value was observed in summer season (47.77±6.44) respectively.


2020 ◽  
Vol 15 (1) ◽  
pp. 117-126
Author(s):  
Saima Akhter ◽  
Onkar Singh Brraich ◽  
◽  

Through anthropogenic activities such as dam building, river management works, indirectly through developments and disturbances in the landscape of the watersheds in particular effluent discharges and deforestation increasingly threatened the environmental integrity of freshwaters systems, world wide. In order to access the monthly and seasonally variations of “Ropar Weland”, study on various physio - chemical parameters was carried out from October 2015 to September 2017 at four representative sites (S1, S2, S3 and S4). The seasons were generally divided into winter (December to February), summer (March to May), monsoon (June to August) and autumn (September to November). Maximum amount of all the parameters except DO and free CO2 were observed in summer and monsoon season and minimum in winter season. Minimum value of DO and free CO2 during summer season is due to the higher temperature because temperature is inversely proportional to DO. Rest of the parameters such as phosphate, sulphate, magnesium, calcium were widely fluctuated according to seasons and are under permissible limits.


BIBECHANA ◽  
1970 ◽  
Vol 8 ◽  
pp. 105-115
Author(s):  
Damodar Thapa Chhetry ◽  
Joydeb Pal

Physico-chemical parameters of the Seepage stream of Kushaha area were studied for two years from July, 2002-June, 2004, once in every month at regular intervals. The monthly data were pooled in seasonal value. The maximum air temperature was recorded in rainy season during first year study period (July, 2002 to June, 2003) but in the second year study period (July, 2003 to June 2004) it was maximum in summer season. Water temperature was maximum in summer and lowest in winter season. Transparency, PH, dissolved oxygen, total alkalinity, total hardness, chloride were recorded maximum in winter season. Free carbondioxide, and biological oxygen demand was maximum in summer season. The minimum transparency, total alkalinity, total hardness and chloride were recorded in rainy season. Dissolved oxygen, and PH, were minimum in summer season. The minimum carbondioxide and BOD were recorded in winter season. Air temperature, water temperature, free carbondioxide, biological oxygen demand showed positive and significant correlation with each other. Similarly, transparency, PH, total alkalinity, total hardness, chloride, showed positive and significant correlation with each other. Dissolved oxygen showed positive and significant correlation with pH, total alkalinity, total hardness and chloride. Keywords: Physico- chemical parameters; seepage system DOI: http://dx.doi.org/10.3126/bibechana.v8i0.5697 BIBECHANA 2012; 8: 105-115


2019 ◽  
Vol 25 (1) ◽  
Author(s):  
ADITYA NARAYAN

The present investigation deals with the prevalence of infection of cestode, Pseudoinverta oraiensis19 parasitizing Clarias batrachus from Bundelkhand Region (U.P.) India. The studies were recorded from different sampling stations of Bundelkhand region of Uttar Pradesh. For this study 360 fresh water fish, Clarias batrachus were examined. The incidence of infection, monsoon season (17.50%) followed by winter season (20.00%) whereas high in summer season (30.00%).


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

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