Algal flora of Rajarani Lake, Dhankuta and their seasonal distribution

In this paper, a total 46 algae belonging to 34 genera and 3 classes (Chlorophyceae 54%, Bacillariophyceae 28%, Cyanophyceae 18%) have been reported from Rajarani Lake, Dhankuta, Nepal. Among these, 13 algae were reported as new to the country. Genera Ankistrodesmus, Closterium, and Desmodesmus had maximum number of species whereas 25 genera were represented by single species. Seasonal variation of algae showed that there was changing number and type of algae with physicochemical parameters in different seasons. Cyanophycean algae Microcystis flos-aque was dominant and observed in all sites in every collection of winter, summer and rainy seasons, and followed by bacillariophyceaean algae i.e., Aulacoseira granulata var. angustissima. The maximum number of algae was found in summer (59%) followed by winter (50%) and rainy (31%) seasons. There were 6 common algae found in all season’s viz. Ankistrodesmus falcatus, Aulacoseira granulata var. angustissima, Flagilaria tenera, Microcystis flos-aquae, Navicula radiosa and Oedogonium sp. Algae viz., Anabaena affinis, Cyclotella meneghiana, Pinnularia divergens, Pinnularia interrupta, Tetrastrum heteracanthum, and Ulothrix subtilissima were found only in winter season whereas, Aulacoseirsa granulata var. muzzanensis, Bolbochaete sp, Closterium striolatum, Cylindrospermum muscicola, Desmodesmus abundans, Desmodesmous quadricauda var.bicaudatus, Eunotia bilunaris, Gomphonema lacusrankaloides and Gomphonema pseudoaugur were observed only in summer. Similarly, Aphanocapsa pulchra, Oscillatoria sancta and Pediastrum duplex var. gracillimum were reported only in rainy season.

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Seasonal biochemical changes in three species of liverwort Plagiochasma of Mandi (Himachal Pradesh), India

Journal of Applied and Natural Science ◽

10.31018/jans.v10i4.1854 ◽

2018 ◽

Vol 10 (4) ◽

pp. 1094-1100

Author(s):

Kanchna Devi ◽

Sunita Kapila ◽

Anju Rao

Keyword(s):

Amino Acids ◽

Free Amino Acids ◽

Rainy Season ◽

Free Amino ◽

Winter Season ◽

Himachal Pradesh ◽

Water Soluble ◽

Soluble Carbohydrates ◽

Natural Habitats ◽

Different Seasons

Thalli of three species of Plagiochasma, collected during different seasons from their natural habitats of Mandi region of Himachal Pradesh were evaluated for some biochemical parameters viz. total water soluble carbohydrates, proteins, free amino acids, total chlorophyll, carotenoid and the activities of amylases, invertase and protease. Highly significantly contents of carbohydrates (70.83±2.54 mg/g fw in P. appendiculatum, 21.26± 0.09 mg/g fw in P. articulatum and 52.75±2.95 mg/g fw in P. intermedium) and of chlorophyll (0.76±0.005 mg/g fw in P. appendiculatum, 0.69±0.005 mg/g fw in P. articulatum and 1.2±0.006 mg/g fw in P. intermedium ) were observed towards the end of the growing season (January-March period of collection), whereas the content of protein (23.46±0.14 mg/g fw in P. appendiculatum, 23.33±0.71 mg/g fw in P. articulatum and 22.99±0.27 mg/g fw in P. intermedium) was maximum during winter (October-December) and that of free amino acids (37.48±1.05 mg/g fw in P. appendiculatum, 70.9±0.91 mg/g fw in P. articulatum and 25.13±0.31 mg/g fw in P. intermedium) in the rainy season (July-September). On the other hand, the activities of enzymes that breakdown the carbohydrates into simple sugars were recorded least towards the end of the favourable period of their growth. The activity of protease was maximum in the rainy season (July-September) and minimum in the winter season (October-December). This study concluded that the seasonal changes in Plagiochasma induced alterations in the biochemical compounds and in the activities of related enzymes that may be responsible for the adaptation of these plants in their natural habitats.

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Seasonal characterisation of municipal solid waste from Astana city, Kazakhstan: Composition and thermal properties of combustible fraction

Waste Management & Research ◽

10.1177/0734242x19875503 ◽

2019 ◽

Vol 37 (12) ◽

pp. 1271-1281 ◽

Cited By ~ 4

Author(s):

Bexultan Abylkhani ◽

Berik Aiymbetov ◽

Almira Yagofarova ◽

Diyar Tokmurzin ◽

Christos Venetis ◽

...

Keyword(s):

Seasonal Variation ◽

Municipal Solid Waste ◽

Solid Waste ◽

Winter Season ◽

Calorific Value ◽

Capital City ◽

Waste To Energy ◽

Energy Potential ◽

Waste Composition ◽

Different Seasons

This study presents the results of a seasonal municipal solid waste composition campaign, that took place over the period of September 2017 to June 2018 in the capital city of Kazakhstan, Astana. Four sampling campaigns were conducted in order to identify the seasonal variation of municipal solid waste composition, recyclables and energy potential materials, such as combustible fraction, useful for the evaluation of waste-to-energy potential. The combustible fraction was analysed for thermal fuel properties, such as proximate and elemental analyses and gross calorific value. The results over the four different seasons showed that the average recyclable fraction of municipal solid waste on a wet basis of 33.3 wt.% and combustibles fraction was 8.3 wt.%. The largest fraction was the organics (47.2 wt.%), followed by plastic (15.4 wt.%) and paper (12.5 wt.%). Small seasonal variations were observed for organics, paper, plastic and glass fractions. The highest values were found in summer for the organic waste, in spring for paper and plastic and autumn for glass. The recyclables fraction showed an absolute seasonal variation of 5.7% with a peak in the winter season (35.4%) and the combustibles fraction showed a seasonal variation between 8.3 wt.% to 9.4 wt.%. Finally, the average calorific value of the combustible fraction was estimated to be 21.6 MJ kg-1 on a dry basis.

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Algal Flora of Nagdaha Lake, Lalitpur, Nepal

Himalayan Biodiversity ◽

10.3126/hebids.v5i1.36159 ◽

2017 ◽

Vol 5 (1) ◽

pp. 92-95

Author(s):

Bishnu Prasad Parajuli

Keyword(s):

Rainy Season ◽

Winter Season ◽

Algal Flora

This paper is a report of algal flora of Nagdaha Lake, Dhapakhel, Lalitpur. Algal Samples were collected out in the months of May, August and December 1996, from four different sampling sites of the lake. From the investigation, 25 different algal taxa belonging to 16 families were observed. Among them, 17 species were observed in summer and winter season while in rainy season 19 species were observed.

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Seasonal variation of antioxidant enzymatic responses in the desiccation-tolerant bryophyte Syntrichia ruralis (Hedw.) Web. & Mohr.

Columella Journal of Agricultural and Environmental Sciences ◽

10.18380/szie.colum.2021.8.1.37 ◽

2021 ◽

Vol 8 (1) ◽

pp. 37-50

Author(s):

Ruchika Kashyap ◽

Zsolt Csintalan ◽

Katalin Veres ◽

Evelin Ramóna Péli

Keyword(s):

Seasonal Variation ◽

Antioxidant Activities ◽

Winter Season ◽

Mean Value ◽

Enzymatic Activities ◽

Guaiacol Peroxidase ◽

Mean Values ◽

North East ◽

Different Seasons ◽

The Mean

Bryophytes are poikilohydric organisms that can be used as model plants to study desiccation tolerance mechanisms. The main objective of this study was to examine the activities of the antioxidant enzymes ascorbate peroxidase (APX), catalase (CAT) and guaiacol peroxidase (POD) in the rehydrated and desiccated states in Syntrichia ruralis (Hedw.) Web. & Mohr. from two slopes, one North-east (NE) and one South-west (SW) facing and collected in different seasons. Our results showed seasonal variation in the enzymatic activities of APX, CAT and POD between the slopes in both the rehydrated and desiccated states. The mean value of all the activities of APX, CAT and POD and MDA contents (a measure of lipid peroxidation) tended to be higher in moss cushions collected from the NE compared to the SW facing slopes except in summer season. The mean values of all enzymatic activities were higher in desiccated states as compared with rehydrated states. Protein content has lower values in summer and winter season. Differences in the antioxidant activities of the mosses growing on the two slopes may reflect adaptations to desiccation stress.

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Change in physico-chemical properties of soil and nutrients in Desmodium triflorum in case of seasonal variation in Ratnanagar-11, Jirauna, Chitwan, Nepal

International Journal of Scientific Reports ◽

10.18203/issn.2454-2156.intjscirep20174868 ◽

2017 ◽

Vol 3 (11) ◽

pp. 285

Author(s):

Niroj Paudel ◽

Lila Pati Paudel ◽

Prakash Deep Rai ◽

Bishnu Dev Das

Keyword(s):

Seasonal Variation ◽

Rainy Season ◽

Chemical Change ◽

Winter Season ◽

Chemical Properties ◽

Low Ph ◽

Physico Chemical ◽

Phosphorus And Potassium ◽

Nitrogen Phosphorus ◽

Properties Of Soil

Background: Physico-chemical change is described in case of seasonal variation. The plant became grazed in different seasonings; nitrogen, phosphorus and potassium are estimated. The aim of paper is the nutrient uptake of Desmodium triflorum due to the change in season.Methods: The sample is collected as four month interval period the grass is tolerate as low pH. N-1.67–2.04%, P- 0.34–0.61% and K-1.46–4.15%. Results: Soil had lowest concentrations of nitrogen (0.096%), phosphorus (0.004%), and potassium (0.027%) in the rainy season. The highest concentration of nitrogen (0.22%) occurred in summer season, phosphorus (0.005%) in winter and summer seasons, and potassium (0.073%) in the winter season. The carbon/nitrogen (C/N) ratio was highest (15.22:1) in summer and lowest (13.96:1) in the rainy season.Conclusions: Present study will be valuable in evaluation and management of the middle land pastures in Nepal.

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A LIMNOLOGICAL STUDY OF PRIMARY PRODUCTIVITY IN SEASONAL VARIATIONS OF A TYPICAL TROPICAL POND OF BUNDELKHAND REGION, INDIA

PLANT ARCHIVES ◽

10.51470/plantarchives.2021.v21.no1.170 ◽

2021 ◽

Vol 21 (No 1) ◽

Author(s):

Sonam Sharma ◽

V.K. Yadav

Keyword(s):

Seasonal Variation ◽

Primary Productivity ◽

Seasonal Variations ◽

Rainy Season ◽

Physicochemical Parameters ◽

Net Primary Productivity ◽

Gross Primary Productivity ◽

Community Respiration ◽

Tropical Pond ◽

Limnological Study

The primary productivity of the Mahil pond has been estimated from March 2017 to February 2018 at four different stations. Various physicochemical parameters and phytoplankton were studied. The seasonal variation of primary productivity revealed that maximum and minimum values of Gross primary productivity and community respiration were associated with rainy and summer seasons respectively. The minimum values of Net primary productivity were recorded during rainy season and maximum during winterfor different study stations.

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Investigation of humic acids concentration in different seasons in a raw water canal, Bangkok, Thailand

Water Science & Technology Water Supply ◽

10.2166/ws.2017.235 ◽

2017 ◽

Vol 18 (5) ◽

pp. 1727-1738

Author(s):

K. Tungsudjawong ◽

S. Leungprasert ◽

P. Peansawang

Keyword(s):

Seasonal Variation ◽

Humic Acids ◽

Rainy Season ◽

Water Source ◽

Source Water ◽

Raw Water ◽

Fluorescence Excitation ◽

Different Seasons ◽

Water Canal ◽

Insight Into

Abstract This study presents an overview of the changes in humic acids, which are disinfection by-product precursors in a raw water canal, Bangkok, Thailand, during different seasons. Fluorescence excitation–emission matrix (EEM) spectroscopy was employed to characterize and quantify spatial and seasonal variations of dissolved organic matter (DOM) along a raw water canal of the Metropolitan Waterworks Authority (MWA) Bangkok, Thailand. A total of 276 raw water samples were collected from 23 stations during the winter, summer and rainy season. Results indicate that hydrophobic fractions made up the majority of DOM and this water source also had high specific UV absorbance (SUVA). Seasonal variation of DOM was found to be more pronounced than geographical variation along the canal. The presence of humic substances was the highest in the rainy season due to rainfall and surface runoff, while soluble microbial by-product-like substances were found only in summer. The results provide an insight into the prediction of humic acids in source water, which benefits the MWA in being aware of seasonal variation in water quality.

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Seasons and pediatric dermatoses: a cross-sectional observational study in an urban skin hospital

International Journal of Research in Dermatology ◽

10.18203/issn.2455-4529.intjresdermatol20212545 ◽

2021 ◽

Vol 7 (4) ◽

pp. 513

Author(s):

Laxmi B. Horatti ◽

Kumar Dilip N. R. ◽

A. R. Shashikiran

Keyword(s):

Seasonal Variation ◽

Observational Study ◽

Skin Diseases ◽

Winter Season ◽

Climatic Conditions ◽

Summer Season ◽

Cross Sectional ◽

The Status ◽

Different Seasons ◽

Skin Conditions

Background: It is a well-known that climatic conditions and seasonal variation have a direct effect on skin and the prevalence of certain skin diseases change directly with changing seasons. The presence of certain skin diseases in children reflect the status of health, hygiene and personal cleanliness of the society. The aim of the study was to know the prevalence of various skin conditions in different seasons.Methods: All fresh cases of children under 12 years of age attending the skin OPD were recorded and were divided based on the three seasons i.e.; summer winter and rainy. The results were statistically evaluated.Results: The top six conditions of our study were impetigo, miliaria, pityriasis alba, scabies, xerosis and papular urticaria. Impetigo and miliaria were more common during summer season, xerosis during winter season and scabies during rainy season.Conclusions: Different climatic conditions have varied effect on the skin and may lead to various dermatoses. To effectively corelate between seasons and skin conditions more such extensive studies on different population and ethnic groups have to be conducted.

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STUDY ON DIVERSITY AND DISTRIBUTION OF ANTS (HYMENOPTERA: FORMICIDAE) IN URBAN AND PERIURBAN AREAS OF AURANGABAD CITY, MAHARASHTRA, INDIA

FLORA AND FAUNA ◽

10.33451/florafauna.v23i2pp404-410 ◽

2017 ◽

Vol 23 (2) ◽

Author(s):

S. D. CHATE ◽

R. J. CHAVAN

Keyword(s):

Rainy Season ◽

Winter Season ◽

Seasonal Abundance ◽

Urban Region ◽

Ant Community ◽

Community Variation

The present study deals with the ant community variation in and around Aurangabad city. During the study total 16 species of ants belonging to twelve genera and four subfamilies were reported in eight habitat from urban and periurban regions. Abundance of ants was more in peri-urban region as compared to urban region. Subfamily myrmicinae was more dominant as compared to other subfamilies. Seasonal abundance of ants was seen to be more in winter season and less in rainy season.

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Function of coprophagous beetles (Coleoptera: Scarabaeidae, Geotrupidae, Hydrophilidae) in cattle pastures inferred from pitfall trapping data

Journal of Agrobiology ◽

10.2478/s10146-009-0011-2 ◽

2010 ◽

Vol 27 (2) ◽

pp. 85-91 ◽

Cited By ~ 1

Author(s):

Martin Šlachta ◽

Jan Frelich ◽

Tomáš Tonka

Keyword(s):

Seasonal Variation ◽

Spatial Variation ◽

Dry Weight ◽

Seasonal Distribution ◽

The Other ◽

Pitfall Trapping ◽

Other Hand ◽

Nested Anova ◽

Species Groups ◽

Dung Decomposition

Function of coprophagous beetles (Coleoptera: Scarabaeidae, Geotrupidae, Hydrophilidae) in cattle pastures inferred from pitfall trapping dataAn analysis of data on the dry weight biomass of coprophagous beetles in standardized dung (4.5 l) was conducted in order to characterize the spatial and the seasonal distribution of the beetles' biomass in cattle pastures and to elucidate their function in dung decomposition. Nested Anova with factors of farm, site (nested in farm), seasonal period and year was used to evaluate the effect of these factors on the biomass of four functional species groups: the dung dwellers ofScarabaeidae(subfamilyAphodiinae), the dung dwellers ofHydrophilidae, the small tunnellers ofScarabaeidae(subfamilyCoprinae) and the large tunnellers ofGeotrupidae. The spatial variation of biomass (between the sites and the farms) was insignificant (P>0.05) in the two dung-dweller groups and in the large-tunnellers group. On the other hand, a significant (P<0.05) seasonal variation of biomass was found in all but the large tunneller group. In dung dwellers, the spring biomass was formed mainly by two species,Aphodius prodromusandA. sphacelatus. In summer, most of the biomass was accounted for bySphaeridium lunatum, S. scarabaeoidesandA. rufipes. In the two tunneller groups,Onthophagus fracticornis, Geotrupes stercorariusandG. spinigerformed a majority of the biomass in dung.

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