Watershed Ecology and the Environment最新文献

{"title":"Potential application of GIS and remote sensing to evaluate suitable site for livestock production in Northwestern part of Bangladesh","authors":"M. M. Shah Porun Rana,&nbsp;Md. Moniruzzaman","doi":"10.1016/j.wsee.2023.07.001","DOIUrl":"https://doi.org/10.1016/j.wsee.2023.07.001","url":null,"abstract":"<div><p>The livestock resources of Bangladesh are under tremendous strain due to several natural and anthropogenic causes. Especially in the Northwestern region of Bangladesh, these resources are more vulnerable to deterioration resulting from human actions, a lack of environmental and rangeland legislation, climate change, drought, poor management, and inadequate disaster mitigation plans. GIS based multicriteria decision analysis (MCDA) and remote sensing techniques have been used in this research to locate ideal land for sheep, goats, buffalo and cow production. In this study, the suitability analysis for livestock production has been considered in eight thematic layers: slope, land use &amp; land cover (LULC), soil types, rainfall, water accessibility, road distance, relative humidity, and average temperature. Besides, this research had been used geospatial tools for combining these eight geographical layers, when<!--> <!-->analytical hierarchy process, a<!--> <!-->MCDA approach helped to<!--> <!-->measure the weight of each criterion. The final map that is perfect for raising cattle has been divided into four categories, such as low, medium, high and excellent. Each of these rangeland suitability groups has portions in the Northwestern region of Bangladesh that fall into the following percentages: 11.14%, 26.07%, 35.27%, and 27.53%. This research also depicts that the western part of the study region, which includes Thakurgaon, Panchagar, Dinajpur, Naogaon, Joypurhat and Bogra has a low suitability index for livestock production while the eastern region, which includes Kurigram, Nilphamari, Pabna, Lalmonirhat, Gaibandha, Rangpur and Sirajganj contributes to an excellent zone. The outcome of this study will be useful to identify the best places for livestock production in the Northwestern part of Bangladesh. Finally, this research may additionally assist government officials in creating environmental and rangeland strategies for the livestock population in the study area.</p></div>","PeriodicalId":101280,"journal":{"name":"Watershed Ecology and the Environment","volume":"5 ","pages":"Pages 161-172"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49759566","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}

{"title":"Comparison of avian community assembly and its disease transmission risk between urban and surrounding rural area in Shanghai, China","authors":"Sen Yang ,&nbsp;Qi Yuan ,&nbsp;Jiaojiao Yuan ,&nbsp;Youzheng Zhang","doi":"10.1016/j.wsee.2022.11.007","DOIUrl":"https://doi.org/10.1016/j.wsee.2022.11.007","url":null,"abstract":"<div><p>Urbanization has expanded rapidly worldwide in recent decades, and has led to a series of environmental changes. With the improvement of the urban habitat, the density of wildlife is on the rise, especially for the birds. However, birds are host to a variety of viruses, pathogenic microorganisms and parasites, and the increase of their density may amplify the risk of disease transmission in cities. Thus, understanding the characteristics of regional bird community aids the integration of knowledge about the risk of disease transmission by birds. Here, we conducted a field survey in summer, 2021, to compare the differences in vegetation, species richness and individual numbers of bird in Shanghai urban and surrounding areas covering 28 zones along an urbanization gradient and to assess the possibility of bird transmission risk in Shanghai. We recorded 122 plant species and 3416 bird individuals of 23 species. Our results found that urbanization has led to a decline in bird species and densities than relatively pristine habitats (rural, agroforestry habitat, urban park), and based on our literature collection, most species carrying avian influenza virus were migratory waterbirds (anatidae and shorebird) that relatively away from urban area. Our study suggests that urbanization reduces bird diversity, but urban birds may have a low probability of transmitting the avian influenza virus to humans.</p></div>","PeriodicalId":101280,"journal":{"name":"Watershed Ecology and the Environment","volume":"5 ","pages":"Pages 12-17"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49765724","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}

{"title":"Growth regulatory pattern of zooplankton in herbicide and antibiotic contaminated aquatic ecosystem: An overview","authors":"Sk Saruk Islam,&nbsp;Sujoy Midya","doi":"10.1016/j.wsee.2023.06.001","DOIUrl":"https://doi.org/10.1016/j.wsee.2023.06.001","url":null,"abstract":"<div><p>Emerging chemical substances have dramatically increased in aquatic ecosystems throughout the last few decades and are creating harmful effects on sustainable environments. Herbicides and antibiotics are usually consumed simultaneously and liquidated into the aquatic system as effluents. Due to the dearth of rigorous control of emerging substances, it poses a threat to ecotoxicologists and limnologists because of their hidden roles against non-target aquatic organisms like zooplankton. These substances have a negative impact on grazer inducers and disrupt community-level zooplankton-phytoplankton relationships. But the hidden role of these phenomena due to these substances is still clearly unknown. So, the present mesocosm study summarises and updates the current status of antibiotics and herbicides on the survival of zooplankton species. We also discuss the role of various herbicides and antibiotics on these non-targeted organisms and create baseline information to overcome the above-mentioned risks and expand the scope of future research in this field.</p></div>","PeriodicalId":101280,"journal":{"name":"Watershed Ecology and the Environment","volume":"5 ","pages":"Pages 153-160"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49765737","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}

{"title":"Synthesis of silica aerogel and its application for removal of crystal violet dye by adsorption","authors":"Shweta Gupta,&nbsp;Amit Prajapati,&nbsp;Arinjay Kumar,&nbsp;Sanigdha Acharya","doi":"10.1016/j.wsee.2023.10.003","DOIUrl":"https://doi.org/10.1016/j.wsee.2023.10.003","url":null,"abstract":"<div><p>In the present study, hydrophilic silica aerogel (HPSA) was synthesized by ambient pressure drying method and was successfully used as an adsorbent for the removal of Cationic dyes (Crystal violet- CV) from the aqueous solution. The synthesized sample was characterized and examined by Fourier transform infrared spectroscopy (FTIR), Bruner – Emmett – Teller (BET), x-ray diffraction (XRD), Zeta potential pH _zp, Nuclear Magnetic Resonance Spectrometer (NMR), and Scanning Electron microscope (SEM). The effect of different parameters such as pH, initial concentration of dyes, contact time, temperature, and their effect on the removal of CV dyes was studied. Silica aerogel synthesized was excellent and 96 % removal of CV dyes on the optimum value of the parameters of 30 min contact time, 303 K temp, 7 pH, 50 mg/l Conc., 0.3 g/l dose of HPSA was obtained. Langmuir, Freundlich, Temkin,and D-R models were applied in the equilibrium studies and obtained the maximum adsorption capacity 137.17 mg/g. pseudo-first, second-order, and intraparticle diffusion models were employed to indicate the chemisorption behavior in the kinetic study on the adsorption. Thermodynamic parameters showed the adsorption process as Exothermic and spontaneous. Sticking Probability (S*≪1) indicated HPSA as a good adsorbent for the removal of dyes. HPSA has demonstrated the potential for regeneration while affirming its remarkable removal efficiency, Cost effectiveness and Environmental compatibility.</p></div>","PeriodicalId":101280,"journal":{"name":"Watershed Ecology and the Environment","volume":"5 ","pages":"Pages 241-254"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2589471423000232/pdfft?md5=a0ebd6bbba3af79220d6d364f4a6f041&pid=1-s2.0-S2589471423000232-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92039565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation and analysis of water environment characteristics in Taipu River","authors":"Xiaojing Shao,&nbsp;Jie Cai,&nbsp;Ziwen Zhang,&nbsp;Heng Zhao,&nbsp;Xing Liu","doi":"10.1016/j.wsee.2022.12.004","DOIUrl":"https://doi.org/10.1016/j.wsee.2022.12.004","url":null,"abstract":"<div><p>Taipu River is one of the important river channels of Taihu Lake, and also an important water body in the demonstration zone of green and integrated ecological development of the Yangtze River Delta. In this study, we collect the water quality monitoring data of Taipu River and related research results of Taipu River water quality, and analyze the water environment characteristics of Taipu River by analyzing the water quality status of Taipu River main stream and East Taihu Lake. The results indicate that from 2016 to 2018, the annual mean values of conventional indexes in main sections of the Taipu River main stream were maintained in Class II to III. The incoming water from the Taipu River mainly includes the East Taihu Lake and its tributaries. The water quality of the East Taihu Lake is superior to that of the Taipu River. The water quality of the Jinze section is mainly affected by the inflow from the East Taihu Lake. Increase the discharge under Taipu sluice to supply high-quality water, which can effectively guarantee the water quality of the section. Then we identify the main water environmental problems in Taipu River basin. The results of our analysis can provide support for the water ecological environment protection of Taipu River.</p></div>","PeriodicalId":101280,"journal":{"name":"Watershed Ecology and the Environment","volume":"5 ","pages":"Pages 56-63"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49727269","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}

{"title":"Multiple-criteria determination and preventive measures of river ecological water level in the Northern Jiangsu plain","authors":"Hongyuan Fang ,&nbsp;Ye Zhu ,&nbsp;Chengjie Wang ,&nbsp;Guangdong Xu ,&nbsp;Yukun Li ,&nbsp;Zhenqi Wang ,&nbsp;Alhasan Ahmed Aljawzi","doi":"10.1016/j.wsee.2023.01.001","DOIUrl":"https://doi.org/10.1016/j.wsee.2023.01.001","url":null,"abstract":"<div><p>It is vital to employ efficient methods to calculate and determine the threshold of river ecological flow. These methods help to get the river ecological status control countermeasures in the plain river networks and construct a flawless long-term mechanism of ecological flow control (water level). According to the river's current environment and the actual circumstances surrounding its operation and administration, the upper, middle, and lower reaches make up the three sections of the Zong-Liutang River in the Plain of Northern Jiangsu. Furthermore, the ecological water level governing factor for each reach was analyzed and studied. The ecological water level threshold in the upper and lower reaches of the Zong-Liutang River adopted the specified values of Jiangsu Provincial Department of water resources. The threshold of the middle reach was thoroughly analyzed by using the determination method with multi-criteria, which consisted of the hydrological and hydraulic methods (including yearly minimum water level with a 90% assured rate method; wetted perimeter method; minimum monthly average water level method), aquatic living conditions method, and river landscape entertainment factor method. Taking into account the hydrological and hydrodynamic characteristics, observed hydrological data conditions of rivers, and the actual operation rules of rivers and water projects regulations in the Northern Jiangsu plain. Through comparing and contrasting actual operation and management plans, the target values of the ecological water level for the river's upper, middle, and lower reaches were 17.4 m, 8.96 m, and 7.5 m, respectively. Based on the river's ecological water level's control value, which was found through a thorough analysis, and the river's real operation and management conditions, specific measures to protect the river's ecological water level were suggested. These included developing a perfect and workable ecological flow control method, speeding up the development of an ecological water level goal assurance early warning system, and an ecological flow and inlet system.</p></div>","PeriodicalId":101280,"journal":{"name":"Watershed Ecology and the Environment","volume":"5 ","pages":"Pages 64-72"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49751613","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}

{"title":"Groundwater salinity and irrigation suitability in low-lying coastal areas. A case of Dar es Salaam, Tanzania","authors":"Timoth Mkilima","doi":"10.1016/j.wsee.2023.07.002","DOIUrl":"https://doi.org/10.1016/j.wsee.2023.07.002","url":null,"abstract":"<div><p>Groundwater salinity is a crucial factor that can impact soil structure and plant water uptake, potentially posing a threat to agricultural productivity. This study focused on assessing the salinity hazard of groundwater in low-lying coastal zones, specifically in Dar es Salaam. Thirty four boreholes were examined, and six water quality parameters (magnesium, calcium, sodium, potassium, total dissolved solids and electrical conductivity) were analyzed to investigate the feasibility of using groundwater for irrigation. Sodium adsorption ratio indices were calculated and employed to construct the Wilcox diagram, which played a crucial role in determining the groundwater suitability for irrigation. The concentrations obtained from the analysis of water quality parameters were compared to the permissible limits recommended by the Food and Agriculture Organization of the United Nations. Based on the Sodium Adsorption Ratio analysis, 14.7% of the examined samples were assigned to class one (S1), indicating irrigation-worthy water quality with minimal risk of harmful salt accumulation in the soil. On the other hand, 32.4% of the samples were categorized as class two (S2), indicating water suitable for irrigation with a significant risk that can be effectively managed. Additionally, 17.6% of the sampling points were classified as class three (S3), signifying water unsuitable for most crops. Lastly, 35.3% of the samples fell into class four (S4), suggesting water quality generally unsuitable for irrigation purposes. The analysis indicated that 94% of the samples exceeded 2250 µs/cm, classifying them as C4, indicating extremely high salinity levels rendering them unsuitable for irrigation. This study underscores the importance of conducting comprehensive research before utilizing groundwater for irrigation in low-lying coastal zones.</p></div>","PeriodicalId":101280,"journal":{"name":"Watershed Ecology and the Environment","volume":"5 ","pages":"Pages 173-185"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49759544","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}

{"title":"Assessment of aquatic ecological health: A comparative study between cistern-made and ‘Natural’ earthen-made waterbody","authors":"Sukhendu Dey ,&nbsp;Palas Samanta ,&nbsp;Apurba Ratan Ghosh","doi":"10.1016/j.wsee.2023.02.001","DOIUrl":"https://doi.org/10.1016/j.wsee.2023.02.001","url":null,"abstract":"<div><p>Ecological health of two waterbodies <em>i.e.,</em> cistern-made and ‘natural’ earthen-made waterbody was compared in the present study based on temporal variations of physicochemical and biological parameters. Number of physicochemical parameters [transparency, temperature, pH, electrical conductivity (EC), total dissolved solids (TDS), total suspended solids (TSS), dissolved oxygen (DO), total hardness (TH), total alkalinity (TA), biochemical oxygen demands (BOD), nitrate, phosphate and chlorophyll <em>a</em> (Chl a)], and biological parameters, <em>e.g.,</em> zooplankton community and aquatic macrophytes were studied seasonally. Zooplankton communitiy comprised six arthropods and two rotifers. SIMPER analysis depicted that <em>Moina</em> sp., <em>Daphnia</em> sp., and <em>Cyclops</em> sp. were dominant species in cistern pond while <em>Cyclops</em> sp., <em>Daphnia</em> sp., <em>Keratella</em> sp. and <em>Brachionus</em> sp. were dominant in earthen natural pond. Abundance of species was highest in summer followed by post-rainy and winter in both the ponds while maximum abundance of zooplankton was recorded in summer. Species richness peaked in winter in natural pond, while in cistern pond species richness and diversity raised in summer. Multivariate analyses depicted significant temporal variation in zooplankton species in both the conditions. RELATE analysis revealed that temporal variation in species distribution and zooplankton community was significantly correlated with environmental parameters. Moreover, biological-environmental best matching (BIO-ENV) analyses indicated that water temperature, pH, TH and BOD (for cistern pond) and water temperature, EC and TSS (for earthen natural pond) were the main driving forces for temporal variations in species distribution and zooplankton community. Additionally, correlation analysis depicted that <em>Moina</em> sp., <em>Daphnia</em> sp., <em>Diaptomus</em> sp., <em>Cyclops</em> sp., <em>Cypris</em> sp., <em>Bosmina</em> sp., and species abundance was positively (significant) correlated with transparency, water temperature, and Chl a in natural pond. On the other hand, correlation analysis depicted that zooplankton species, species abundance, evenness and diversity were positively correlated with water temperature, DO, BOD and Chl a in cistern pond. Moreover, abundance of aquatic macrophytes were limited in three basic groups, namely free floating [(<em>Lemna</em> sp. (Major), <em>Lemna</em> sp. (Minor), <em>Azolla</em> sp., <em>Pistia</em> sp. and <em>Eichhornia</em> sp.], rooted submerged [<em>Hydrilla</em> sp., <em>Ceratophyllum</em> sp.] and rooted emerged [<em>Nymphaes</em> sp. and <em>Ipomoea</em> sp.]. Further, trophic state index (TSI) value revealed that both the ponds are hyper-eutrophic (‘natural’ waterbody &gt; cistern waterbody) with a strong temporal variations. Therefore, these data could be used as water quality community-based bio-assessment tool as well as basis of water ","PeriodicalId":101280,"journal":{"name":"Watershed Ecology and the Environment","volume":"5 ","pages":"Pages 88-99"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49727484","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}

{"title":"Prioritization of erosion susceptible watersheds using morphometric analysis and PCA approach: A case study of lower Sutlej River basin of Indian Punjab","authors":"Navneet Sharma ,&nbsp;Arun Kaushal ,&nbsp;Abrar Yousuf ,&nbsp;Samanpreet Kaur ,&nbsp;Rakesh Sharda ,&nbsp;Som Pal Singh ,&nbsp;OP Gupta ,&nbsp;Anil Sood","doi":"10.1016/j.wsee.2023.08.002","DOIUrl":"https://doi.org/10.1016/j.wsee.2023.08.002","url":null,"abstract":"<div><p>Morphometry helps in understanding the behaviour of drainage characteristics with respect to various hydrological processes including infiltration, runoff, erosion and sediment transport. Morphometric analysis of river basins is an essential technique to the study the response of drainage basin in response to topological characteristics. The river basins' morphometric analysis is an important technique to prioritize the watersheds for implementation of soil and water management strategies. In this study, the morphometric characteristics of the lower Sutlej River have been determined using the geo-spatial techniques. The river basin, having area of 8577 km², was delineated into the fourteen sub-watersheds (WS-1 to WS-14) in the GIS environment. The ALOS PALSAR DEM and ArcGIS were utilized to evaluate the morphometric parameters of the delineated watersheds. The calculated morphometric parameters were used to rank the watersheds in terms of soil erosion potential. The priority ranks to the watersheds were assigned as per compound parameter, which was calculated by averaging the ranks designated to each morphometric parameter. Watersheds with the lowest compound parameter values were given the highest priority rating, and vice versa. Based on the results WS-7 was assigned the first rank whereas WS-13 was assigned the 13th rank. The principal component analysis was performed to determine the highly correlated morphometric parameters. Out of the 18 parameters, 13 were found be highly correlated. The compound parameter obtained based on these highly correlated parameters also prioritized WS-7 as the most vulnerable watershed. Therefore, WS-7 should be selected for the implementation of soil and water conservation strategies. It can be concluded that morphometric analysis along with PCA in combination with GIS can be helpful in prioritizing the watersheds in terms of soil erosion vulnerability and water management.</p></div>","PeriodicalId":101280,"journal":{"name":"Watershed Ecology and the Environment","volume":"5 ","pages":"Pages 209-224"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49751865","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}

{"title":"Assessment of the ecotoxicological effects of deltamethrin to Daphnia magna: Linking sub-individual and supra-individual parameters","authors":"S. Rodrigues ,&nbsp;M.I. Teixeira ,&nbsp;B.S. Diogo ,&nbsp;S.C. Antunes","doi":"10.1016/j.wsee.2023.10.002","DOIUrl":"https://doi.org/10.1016/j.wsee.2023.10.002","url":null,"abstract":"<div><p>Deltamethrin (DM) is a pyrethroid insecticide, widely used worldwide, and is known to be toxic to diverse aquatic organisms. This work intended to evaluate the ecotoxicological effects of DM in <em>Daphnia magna</em>. To calculate the LC₅₀ and EC₅₀ values, an acute bioassay was conducted with a range of DM concentrations (0.1-150 µg/L). A chronic bioassay was also performed with a range of DM concentrations (18.66-100 ng/L). In both assays, a negative and a solvent control (acetone) were also tested. Life history parameters (reproduction and growth) were evaluated. Biochemical quantifications were also assessed regarding antioxidant and biotransformation capacity, oxidative damage, neurotoxicity, energy reserves content, and genotoxicity. LC₅₀ values and confidence interval at 95 % (CI₉₅) were 64.13 (CI₉₅: 46.40–81.85) and 65.22 (CI₉₅: 43.17–87.27) μg/L, and EC₅₀ values were 0.68 (CI₉₅: 0.54–0.81) and 0.31 (CI₉₅: 0.23–0.39) μg/L, for 24 h and 48 h, respectively. Regarding life-history parameters, only the lower DM concentration tested (18.7 ng/L) induced a significant increase in the rate of population increase (<em>r</em>). A significant increase in the solvent control was recorded for N1 fecundity, reproductive output, and <em>r</em>. Biochemical effects were only observed in terms of antioxidant/detoxification mechanisms (18.7, 32.6, 100 ng/L and solvent control) and oxidative damage (&gt;18.7 ng/L and solvent control) but did not show an evident pattern of oxidative stress promoted by DM. Depletion of energy reserves (glycogen content) was observed from the lowest concentration tested as well as for the solvent control, and DNA damage up to 100 ng/L of DM was also observed. Future investigations (e.g. ecotoxicological studies with exposure of other aquatic organisms to environmentally relevant concentrations for longer exposure periods) would be required to confirm DM’s toxicity under ecologically relevant conditions. Moreover, the solvent effects in an ecotoxicological approach must be clarified.</p></div>","PeriodicalId":101280,"journal":{"name":"Watershed Ecology and the Environment","volume":"5 ","pages":"Pages 231-240"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49759560","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}