Our Nature最新文献_第3页

Relationships between environmental conditions and fish assemblages in the Lohore River of Dailekh, Western Nepal 尼泊尔西部戴莱克lohoore河的环境条件与鱼类聚集之间的关系

Our Nature Pub Date : 2021-12-14 DOI: 10.3126/on.v19i1.41217

S. Shrestha, Dipak Rajbanshi, D. Limbu, Jash Hang Limbu

{"title":"Relationships between environmental conditions and fish assemblages in the Lohore River of Dailekh, Western Nepal","authors":"S. Shrestha, Dipak Rajbanshi, D. Limbu, Jash Hang Limbu","doi":"10.3126/on.v19i1.41217","DOIUrl":"https://doi.org/10.3126/on.v19i1.41217","url":null,"abstract":"The Lohore River is one of the important riverine ecosystems of Dailekh which support diverse aquatic communities. The present study was carried out to assess the fish diversity status with relation to environmental conditions in both to space and time. The survey was conducted at three different sampling stations in three different seasons. For the fish sampling, two cast nets of different mesh sizes were used, one having large mesh size of 2 cm, 6 m diameter and 6 kg weight and another having mesh size of 0.5 cm, 3 m diameter and 2 kg weight. Moreover, drag net and gill net were also used to collect the fish samples. A total of 11 fish species belonging to 2 orders, 3 families and 7 genera. Results from the similarity percentage analysis (SIMPER) suggested that fish species of Puntius gelius, Schizothorax plagiostomus, Tor chelynoides and Schistura sovana were major contributing species each contribute more than 9%. An analysis of similarity (ANOSIM) pointed that fish community structure in the Lohore River differ in spatial scale (p<0.01) but not in temporal scale (P>0.01). Water temperature, dissolved oxygen and water velocity was found as influential factors for fish species distribution.","PeriodicalId":19905,"journal":{"name":"Our Nature","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85492210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Species diversity of macrophytes in Jagadishpur Reservoir, Kapilvastu District, Nepal 尼泊尔Kapilvastu地区Jagadishpur水库大型植物物种多样性

Our Nature Pub Date : 2021-12-14 DOI: 10.3126/on.v19i1.41263

R. K. Chaudhary, A. Devkota

{"title":"Species diversity of macrophytes in Jagadishpur Reservoir, Kapilvastu District, Nepal","authors":"R. K. Chaudhary, A. Devkota","doi":"10.3126/on.v19i1.41263","DOIUrl":"https://doi.org/10.3126/on.v19i1.41263","url":null,"abstract":"The present research was conducted for quantitative study and diversity analyses of aquatic macrophytes dwelling littoral zone of Jagadishpur reservoir, Kapilvastu district in three seasons, as winter (December), summer (April), and rainy (August). Altogether 58 species of macrophytes were recorded in study site, of which highest number of species (54) was occupied by angiosperms followed by three species of pteridophytes and one species of alga. These macrophytes varied in different morphological groups, viz., emergent, submerged, and rooted-floating leaf type. Maximum number of species were represented by emergents (39) followed by rooted-floating leaf type (12) and submerged (7) macrophytes. There was distinct seasonal variation in the distribution of macrophytes: based on importance value index, Nelumbo nucifera (IVI = 22.87), Scripus sp. (IVI = 28.01), Ipomoea carnea (IVI = 24.67) and Typha angustifolia (IVI = 29.01) were dominant in the winter; Nelumbo nucifera (IVI = 20.05), Cynodon dactylon (IVI = 20.07) and Ipomoea carnea (IVI = 21.17) were dominant in the summer and Nelumbo nucifera (IVI = 23.8) and Scripus sp. (IVI =25.56) were dominant in the rainy season. The highest species diversity (H’) of macrophytes was observed during summer (3.451), followed by rainy season (3.135) and winter (3.008). The luxuriant growth of aquatic macrophytes evidenced the highly productive nature of the lake, while the dominance of emergents among the growth forms indicates the encroachment of littoral vegetation, indicating a successional trend toward marsh meadow.","PeriodicalId":19905,"journal":{"name":"Our Nature","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74687295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of Water Quality Index (WQI) for groundwater quality assessment of Biratnagar, Nepal 水质指数(WQI)在尼泊尔比拉特纳加尔地下水质量评价中的应用

Our Nature Pub Date : 2021-12-14 DOI: 10.3126/on.v19i1.41260

Bishnu Dev Das, S. Choudhary

{"title":"Application of Water Quality Index (WQI) for groundwater quality assessment of Biratnagar, Nepal","authors":"Bishnu Dev Das, S. Choudhary","doi":"10.3126/on.v19i1.41260","DOIUrl":"https://doi.org/10.3126/on.v19i1.41260","url":null,"abstract":"This present hydrological study assessed the groundwater quality of Biratnagar Metropolitan by the application of Water Quality Index (WQI). It has been determined on the basis of analyzed groundwater samples for some important physicochemical parameters such as pH, turbidity, electrical conductivity (EC), dissolved oxygen (DO), free carbon-dioxide (FCO2), bicarbonate (HCO3), total hardness (TH), phosphate (PO4-P), nitrate-N (NO3-N), arsenic (As), and fluoride (Fl) collected from 110 representative tube wells during post-monsoon period of 2015. The status of fluoride was below detectable level (BDL) in all the analyzed groundwater samples. The WQI for these samples ranged from 84.54 to 403.14. The high value of WQI has been found mainly due to the higher values of turbidity, FCO2 and arsenic in the groundwater. The results of study have been used to recommend models for predicting water quality. The classification of water quality on the basis of WQI value have been found to be good water (18.18%), poor water (59.09%), very poor water (13.64%) and unsuitable for drinking (9.09%). The result of the study suggests that the groundwater of the area needs some degree of treatment before consumption, and it also needs to be protected from the threat of contamination. The groundwater is one of the major source of drinking water as well as for irrigation in study area.","PeriodicalId":19905,"journal":{"name":"Our Nature","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78167408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

An assessment of the Human-Elephant conflict in Sapahi and Kakadi Village of Kolhabi Municipality, Bara, Nepal 尼泊尔巴拉市科尔哈比市萨帕希村和卡卡迪村人象冲突评估

Our Nature Pub Date : 2021-12-14 DOI: 10.3126/on.v19i1.41223

Akshay Chaudhary, S. Timilsina, S. Gautam, Prajwol Babu Subedi

{"title":"An assessment of the Human-Elephant conflict in Sapahi and Kakadi Village of Kolhabi Municipality, Bara, Nepal","authors":"Akshay Chaudhary, S. Timilsina, S. Gautam, Prajwol Babu Subedi","doi":"10.3126/on.v19i1.41223","DOIUrl":"https://doi.org/10.3126/on.v19i1.41223","url":null,"abstract":"This study aims to assess the trend, extent, and impact of Human-Elephant conflict (HEC) in Sapahi and Kakadi villages of Bara district. Direct field observation, Household Survey (HHs), Focus Group Discussions (FGDs), and Key Informant Interview (KII) were carried out during November and December 2016 where 11 wards were selected purposively from two village and 50 households from each village. Also, 12 KII and one FGDs from each ward were performed. SPSS 20.0, and MS Excel 2016 were used to calculate mean, percentage, frequency count, and chi-square test was used to determine the variation in people’s perception towards wild Elephant conservation. The total average damage of paddy per year per HHs was 834.1 kg followed by wheat 153.7 kg, and mustard 2.12 kg. The economic value of average annual crop damage per year per HHs accounted for NRs. 22669.70. Among total HHs, 84% of the respondents said that the trend of crop damage is increasing, 10% found no differences in crop damage, and remaining 6% said decreasing. During the last 5 years, 7 people were injured, and 6 were killed. The lighting fire, beating drum, and making noise were the local techniques used by all the respondents to chase away elephant for the mitigation of HEC. The farmers also guard their fields at night time. 60% of the respondents are positive towards elephant conservation and remaining 40% seems no significance for conservation. The compensation scheme for crop damage should be properly implemented in the study area to minimize the HEC. A sustained conservation education program especially focusing on female, farmers, and nomads are recommended to conserve wild elephants, and their habitat.","PeriodicalId":19905,"journal":{"name":"Our Nature","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88698640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Human-Elephant interactions and associated damage in the northern transboundary areas of Bangladesh 孟加拉国北部跨界地区人象互动及其相关损害

Our Nature Pub Date : 2021-12-14 DOI: 10.3126/on.v19i1.41213

M. Shamsuddoha, M. A. Aziz

{"title":"Human-Elephant interactions and associated damage in the northern transboundary areas of Bangladesh","authors":"M. Shamsuddoha, M. A. Aziz","doi":"10.3126/on.v19i1.41213","DOIUrl":"https://doi.org/10.3126/on.v19i1.41213","url":null,"abstract":"We have studied human-elephant interactions in the northern transboundary of Bangladesh and estimated the scale of associated damage due to the negative interaction by visiting conflict area, performing focus group discussions key informant interviews and using secondary data sources. Around 70-80 non-resident elephants regularly intruded to the study area through the international border fence using several trespassing points and engaged in conflicts with frontier villagers. We discussed the nature and scale of conflict and the financial losses due to the conflict. Besides severe casualties in both ends, the enumerated economic loss was USD 1,171, 665 in 2013 and 2014 due to the damage to cropland, houses and properties, trees and orchards. We have identified major human-elephant conflict (HEC) zones adjacent to the border fence through spatial analysis with different level of intensity. Appropriate human-elephant conflict mitigation measures such as habitat improvement and management, monitoring of elephant population, alternative income generation, awareness programs for the local people and working together with India regarding this issue is a timely and urgent need for Bangladesh","PeriodicalId":19905,"journal":{"name":"Our Nature","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78055028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A report of Siwalik forest around Letang Raja-Rani wetland, Morang, eastern Nepal 尼泊尔东部莫朗，Letang Raja-Rani湿地周围的Siwalik森林报告

Our Nature Pub Date : 2021-12-14 DOI: 10.3126/on.v19i1.41232

M. Chettry, Rijan Ojha, B. Niroula

引用次数: 1

Effect of Bamboo Substrate on Growth and Production of Carp and Small Indigenous Fish 竹基质对鲤鱼和小型本地鱼类生长和生产的影响

Our Nature Pub Date : 2020-12-30 DOI: 10.3126/ON.V18I1.34240

R. Poudel, S. Rai, D. Jha, R. Mandal

引用次数: 1

Roles of Cooperatives in Fish Farming Development in Chitwan and Nawalparasi Susta East Districts 合作社在Chitwan和Nawalparasi susa东区渔业发展中的作用

Our Nature Pub Date : 2020-12-30 DOI: 10.3126/ON.V18I1.34236

Sabina Rajthala, S. Rai, D. Jha, J. D. Bista, Roseanna Avento

引用次数: 0

Singing patterns of the Oriental Magpie Robin Copsychus saularis Linn. 东方喜鹊知更鸟(Copsychus saularis Linn)的歌唱模式。

Our Nature Pub Date : 2020-12-30 DOI: 10.3126/ON.V18I1.34238

J. Karna, B. R. Subba, H. Bhattacharya, D. T. Chhetry

引用次数: 0

Fish Assemblage Structure and Environmental Correlates in Nepal’s West Rapti River, Banke 尼泊尔西拉普蒂河的鱼类组合结构和环境相关性

Our Nature Pub Date : 2020-12-30 DOI: 10.3126/ON.V18I1.34239

Sujata Chaudhary, Jash Hang Limbu, S. Subba, J. Gurung, Nareshmani Pandey, K. D. Singh

{"title":"Fish Assemblage Structure and Environmental Correlates in Nepal’s West Rapti River, Banke","authors":"Sujata Chaudhary, Jash Hang Limbu, S. Subba, J. Gurung, Nareshmani Pandey, K. D. Singh","doi":"10.3126/ON.V18I1.34239","DOIUrl":"https://doi.org/10.3126/ON.V18I1.34239","url":null,"abstract":"The spatial and temporal variations of fish assemblages in rivers and streams of Nepal are poorly understood. So, the present study aimed to explore the spatial and temporal variations of fish assemblage structure in Nepal’s West Rapti River. The data were collected during autumn, winter and spring seasons, from October 2018 to April 2019. Fish samples were collected using cast net of 12 mm mesh size. A total of 28 species belonging to 7 orders, 10 families and 19 genera were recorded during the study. The analysis of similarity (ANOSIM) showed no significant difference among the stations and seasons. Based on cluster analysis, two major clusters were observed. The similarity percentage (SIMPER) analysis delineated that Cabdio morar (C14, 13.63%), Barilius bendelensis (C11, 10.32%), Gogangra viridescens (C22, 7.85%), Salmostoma phulo (C17, 7.74%), Labeo gonius (C5, 7.53%), Gagata cenia (C23, 6.45%), Garra gotyla (C6, 5.87%) and Labeo dyocelius (C2, 5.62%) were the most contributing species. The Canonical Correspondence Analysis (CCA) distinctly showed that the environmental variables dissolved oxygen, pH, carbon-dioxide, and water temperature play an essential role in shaping the fish assemblage structure of West Rapti River.","PeriodicalId":19905,"journal":{"name":"Our Nature","volume":"65 1","pages":"28-37"},"PeriodicalIF":0.0,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88106499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7