International Journal of Hydrology最新文献

{"title":"Larviculture of the Zungaro jahu (Ihering, 1898)- JAÚ, an endangered species under laboratory conditions","authors":"A. Pelli, J. Lopes, F. D. Souza, RM Macedo, MM Pedreira, C. Hayashi","doi":"10.15406/ijh.2022.06.00297","DOIUrl":"https://doi.org/10.15406/ijh.2022.06.00297","url":null,"abstract":"Zungaro jahu (Ihering, 1898) is a fish threatened with extinction, according to the Red List of the Ministry of the Environment and Legal Amazon. The objective of this work was to propose a cultivation protocol for the jaú. In the laboratory, 54 larvae were cultured for 15 days. Six specimens of jaú were removed, with a survival rate of 11%. The estimated cost of the experimental unit was USD 62.50. With improvement of the cultivation system, we could achieve survival of 9 fingerlings, one for each experimental unit, at an average cost of $ 1.78 per fingerling. The authors believe that the cultivation of the jaú can be overcome, and they raise some hypotheses to justify the extinction in natural environments. Possible causes include changes in natural systems such as climate change, fishing, predation of juveniles by introduced species, diseases introduced, changes in food chains, limitation or restriction of habitat area, physical changes in the environment (formation of lakes for electricity generation), eutrophication or pollution from different sources. The development of larviculture protocols for this species would be an important tool to prevent the extinction, enabling at least its cultivation in the laboratory.","PeriodicalId":14063,"journal":{"name":"International Journal of Hydrology","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78734217","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":"Technical and economic validation of the fruit thinning practice in commercial mangosteen plantations in the Soconusco region, Chiapas. Mexico","authors":"Víctor Hugo Díaz Fuentes, Brenda Gabriela Díaz Hernández","doi":"10.15406/ijh.2022.06.00295","DOIUrl":"https://doi.org/10.15406/ijh.2022.06.00295","url":null,"abstract":"The objective of the work was to validate the technical and economic efficiency of thinning to increase the size and weight of mangosteen fruits. The validation was carried out in 2021, in two commercial plantations of mangosteen 10 and 13 years old located in the municipalities of Tapachula, and Tuxtla Chico, Chiapas, Mexico, respectively. The factors in study are thinning with two levels: thinned 30% and unthinned (control) and three initial fruiting ranges (RFI): 80-120 fruits; 121 to 160 fruits and> 160 fruits. By combining the study factors, 6 treatments were formed: RFI 80-120-thinned; RFI 121-160-thinned; RFI >160-thinned; RFI 80-120-unthinned RFI 121-160-unthinned and RFI >160-unthinned. A completely random design with four repetitions was used. The experimental unit consisted of a tree, with a total of 24 trees in 0.14 ha in each plantation under study. The study variables were yield/tree; fruit weight and fruits/tree. The economic comparison between treatments was made and the return to capital (cost-benefit ratio) of them was calculated. In both plantations evaluated, a significant statistical difference was found in fruits/tree, fruit weight, yield/tree and yield/ha. The highest average weight of the fruits (> 76 g in accordance with the requirements of international markets.) and percentage of them, is obtained in trees thinned. The highest cost-benefit ratio (4.5 in Tuxtla Chico plantation and 2.3 in Tapachula plantation), was obtained in RFI >160 thinned treatment.","PeriodicalId":14063,"journal":{"name":"International Journal of Hydrology","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88152937","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":"Spatial and temporal variability of carbon dioxide and methane fluxes in an Amazonian estuary","authors":"Saúl Edgardo Martínez Castellón, J. H. Cattanio, J. Berrêdo, M. Rollnic, V. Neu, Maridalva M. Ribeiro","doi":"10.15406/ijh.2021.05.00294","DOIUrl":"https://doi.org/10.15406/ijh.2021.05.00294","url":null,"abstract":"Despite scarce information in the Amazon regions, aquatic environments in tropical mangroves are important carbon deposits, and little is known about the exchange of carbon dioxide (CO2) and methane (CH4) with the atmosphere. We used a dynamic floating chamber to measure CO2 and CH4 fluxes in different aquatic surfaces (river, bore, and stream) on a monthly basis. Water physical-chemical parameters were also measured. Daily tide level variations have influenced CH4 flux in the rainy season. The water surface in the studied Amazonian estuary was a source of CO2 and CH4 to the atmosphere, and the CO2 output was much greater in the rainy season. Their seasonal flux did not present differences among rivers, bore, and streams in the two assessed seasons, but there was monthly variation in their fluxes, which were much higher than in other studies carried out in the tropics (mean production of 3.35 Gg CO2-e y-1).","PeriodicalId":14063,"journal":{"name":"International Journal of Hydrology","volume":"35 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91504610","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":"Constructed Floating treatment wetlands: can they improve water quality in a northern USA climate?","authors":"Mattias Oddsson, E. Deering, Rengifo Ortega, J. Magner","doi":"10.15406/ijh.2021.05.00293","DOIUrl":"https://doi.org/10.15406/ijh.2021.05.00293","url":null,"abstract":"Constructed floating treatment wetlands (FTWs) are a best management practice (BMP) applied in aquatic environments to improve water quality by mitigating nutrient pollution. We evaluated the efficacy of FTWs in Minnesota, USA as a tool for the removal of excess nutrients in surface water to enhance water quality. We began with a 2015 outdoor mesocosm study to quantify the removal efficiency of total phosphorus (TP), ortho-phosphate-P (PO4-P), nitrate-N, and ammonia-N. The FTWs were each planted with wetland plants Juncus effusus, Eleocharis acicularis, and Glyceria canadensis. A paired controlled TP budget was prepared to identify mesocosm sources and sinks. Mesocosm FTWs showed higher PO4-P reduction efficiencies than the control mesocosms. Mesocosms with FTWs had significantly lower pH and dissolved oxygen (DO) concentrations. Water quality measurements were made along with qualitative observations, such as durability, at two different field scales where FTWs were installed in a pond and lake in 2016. Field deployed FTWs showed measurable changes in several water quality parameters over the study period. Statistically significant reductions were observed in PO4-P, DO, and pH for the pond site but not at the lake site. Though positive results were observed, factors other than FTWs may better explain the field deployed FTW results. Overall, the high FTW spatial coverage (15%) in the mesocosms showed clear PO4-P removal, whereas low FTW spatial coverage (<1%) of the field scale surface water was likely the most limiting factor to achieving optimal water quality at the study sites and rather than individual FTW performance.","PeriodicalId":14063,"journal":{"name":"International Journal of Hydrology","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87599517","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":"Power relations: a catalyst in the building of flood disaster resilience capacities in the orashi region of rivers state","authors":"I. Brown, Tari Eyenghe, Sodieari Henderson Boyle","doi":"10.15406/ijh.2021.05.00292","DOIUrl":"https://doi.org/10.15406/ijh.2021.05.00292","url":null,"abstract":"Climate change-related disasters have in recent years become a global phenomenon with catastrophic consequences. Africa has had most of the consequences of climate change related disasters, resulting in monumental urban and rural flooding, widespread casualties, displacements, loss of property and sources of livelihood. Given the long-term implications of climate change, it is critically important to understand how vulnerable communities respond to the menace occasioned by flooding. The impact of the flooding is felt more in low-lying communities situated along the coastal fringes leaving inherently vulnerable communities to the vagaries of flooding. However, despite of their vulnerability to flooding disasters, some people displayed resilience capacities more than others because of their apparent access to resources and power within and outside their localities. The study investigated the issue, through the application of the qualitative approach that drew the Bourdieusian theory of practice, deploying the analytical concepts of fields, habitus and species of capital to gather useful information from relevant focus groups to understand how various forms of power was employed to capture resources that enhanced resilience capacities in the seasonal flood prone Orashi region of Rivers State of Nigeria. Following the outcome of the analysis of the information gathered from the focus group and a review of relevant literature, it was revealed that most of the vulnerable population displayed some ingrained disposition and the deployment of indigenous knowledge and social capital for adaptation to survive flood disasters. It is therefore concluded that dynamics of power is a key factor in the resilience capacities of the population of the study.","PeriodicalId":14063,"journal":{"name":"International Journal of Hydrology","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77424584","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":"Evaluation and space representation of the maximum surface runoff in watersheds","authors":"Alain Martinez, Liber Galbán Rodríguez, Rosana Caridad Ramírez González","doi":"10.15406/ijh.2021.05.00289","DOIUrl":"https://doi.org/10.15406/ijh.2021.05.00289","url":null,"abstract":"In Cuba, regardless of the advances made in hydrological and hydraulic investigations related to floods, there are limitations with the detailed knowledge of the true maximum surface runoff or maximum flow that characterizes these phenomena in the season of intense rains, for which it is necessary to carry out complex hydrological study that, with the help of professional software and statistical techniques, help to determine and model spatially with certain reliability, the maximum water surface drained in watersheds. The general objective was pursued: To determine and represent spatially with the use of Geographic Information Systems (GIS) and hydrological methods, the runoff or maximum flow produced by the intense rains in a watershed, selecting to exemplify the watershed from the Magdalena River to the south east of the Santiago de Cuba municipality. As a result was obtained in the first instance, that it is feasible to apply this procedure to know in a preliminary way what maximum flow is available at any point of a main river or tributary. This approximation constitutes a significant advance for subsequent work in other watersheds of Cuba or internationally.","PeriodicalId":14063,"journal":{"name":"International Journal of Hydrology","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90605561","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":"Seasonal analysis on land surface temperature (LST) and normalized difference vegetation index (NDVI) variations in the Iguatu semi-arid hinterland, ceará","authors":"Yara Batista Gomes, Isorlanda Caracristi","doi":"10.15406/ijh.2021.05.00290","DOIUrl":"https://doi.org/10.15406/ijh.2021.05.00290","url":null,"abstract":"The following paper analyzes the seasonal behavior of surface temperature and vegetation conditions from Landsat 8 satellite images in Iguatu, located in South-central Ceará, Brazil. The guiding method was the Urban Climate System (UCS) along with works with specific literature. Concerning the LSTs during the wet season, the urban area recorded 30.8°C, whereas the countryside verified milder thermal conditions than in downtown, especially in the southwestern region (19.2°C to 23.1°C). The NDVI values in April (wet season) for the urban area and part of the suburbs showed (0.00) because of civil constructions and little vegetation present in the area, except for the surroundings of the Bastiana and Cocobó lagoons – ranging between (0.59 and 0.79), which represents a green area. In August (dry season), there was an expressive spatial distribution of surface temperature around 32 °C. The NDVI was (-0.01) in the densely occupied area and (0.67) in the urban lagoons during the same period. The land use and its plant cover reflect significantly in the distribution and intensity of surface temperatures, as verified in the research.","PeriodicalId":14063,"journal":{"name":"International Journal of Hydrology","volume":"51 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79996009","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":"The decision-making process towards implementing energy efficiency in a university-built park in southern Brazil","authors":"Marcos Antonio Leite Frandoloso, E. D. da Cunha, A. Burgos","doi":"10.15406/ijh.2021.05.00288","DOIUrl":"https://doi.org/10.15406/ijh.2021.05.00288","url":null,"abstract":"Sustainability has been increasingly incorporated as an essential life perspective into educational institutions as well as local communities. Universities play an important role into the society by debating theoretical contributions and implementing concrete actions. The present research was developed to evaluate a university’s energy efficiency by using the Polytechnic University of Catalonia, Spain as a reference for University of Passo Fundo, Brazil. The reference values and index ratings obtained for energy performance, in the Universities’ building stock, were evaluated based on positive and negative features. The study identifies and assesses the evolution of incident factors towards energy consumption and its impacts on the hidropower generation, the main energy resource in Brazilian. Hence, the university can promote a reflection about its practices to develop feasible tools that contribute to sustainable measures. As a result, guidelines and strategies were proposed, not only on targeted evaluated buildings but also on the entire building stock. The research indicates the importance to follow well-defined guidelines in the decision-making process by institutions of higher education, in order to consider integrated sustainable practices. The methodology and findings contribute to improve and promote Education for Sustainability, which should encourage other similar universities to put sustainable projects into practice and encourage the whole society to face the inevitable change of paradigms for achieving the Sustainable Development Goals (SDGs).","PeriodicalId":14063,"journal":{"name":"International Journal of Hydrology","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89577412","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":"Investigating effects of deficit irrigation levels and fertilizer rates on water use efficiency and productivity based on field observations and modeling approaches","authors":"Muhammad Rizwan Shoukat, Muhammad Shafeeque, A. Sarwar, K. Mehmood, Muhammad Jehanzeb Masud Cheema","doi":"10.15406/ijh.2021.05.00287","DOIUrl":"https://doi.org/10.15406/ijh.2021.05.00287","url":null,"abstract":"Investigating the effects of optimized fertilizer and irrigation levels on water use efficiency and productivity of wheat crop at small farms is of great importance for precise and sustainable agriculture in Pakistan's irrigated areas. However, traditional farmer practices for wheat production are inefficient and unsustainable. This study aimed to investigate the effects of deficit irrigation and nitrophos fertilizer levels on bread wheat grain yield, yield parameters, nutrient use and water use efficiencies in bed planting wheat compared to traditional farmers' practices in the flat sowing method. The two-year field experiment followed a randomized complete block design of three replications, taking three irrigation treatments according to the requirement of crop estimated by CROPWAT model (100% of ETC), deficit irrigation (80% of ETC), and deficit irrigation 60% of ETC and three nitrophos fertilizer treatments (farmer practice 120 kg N ha-1, optimized 96 kg N ha-1, and 84 kg N ha-1) at different growth stages. Crop ETC was calculated using the FAO CROPWAT 8.0 model from the last ten years (2003-2013) average climate data of the experimental station. The traditional farmer practice treatment was included as a control treatment with a flat sowing method compared with other sown-by-bed planter treatments. All treatments were provided with an equivalent amount of fertilizer at the basal dose. Before the first and second irrigation, top-dressing fertilizer was used in traditional farmers' treatment at the third leaf and tillering stages. It was applied in optimized treatments before the first, second, and third irrigation at the third leaf, tillering and shooting stages, respectively, under the bed planting method. The deficit level of irrigation (80% of ETc) and optimized fertilizer (96 kg N ha-1) showed the optimum grain yield, nutrient use, and water use efficiencies, with 20% reduced irrigation water and fertilizer levels than traditional farming practice. The results suggest that bread wheat should be irrigated with 80% of ETC and applied 96 kg N ha-1 nitrophos fertilizer at the third leaf, tillering, and shooting stages to achieve higher grain yield and water and nutrient use efficiencies under bed planting.","PeriodicalId":14063,"journal":{"name":"International Journal of Hydrology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89760023","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":"A timely efficient and robust multi-source and multitemporal routine for determination of surface water area in large water reservoirs","authors":"D. Facco, L. Guasselli, D. Zanotta, Luis Fernando Chimelo Ruiz","doi":"10.15406/ijh.2022.06.00327","DOIUrl":"https://doi.org/10.15406/ijh.2022.06.00327","url":null,"abstract":"The Brazilian electrical system has gone through conflicts resulting from recent water crisis. Timely indicators are crucial for properly acting in order to mitigate upcoming problems. In this work we evaluate the potential of Reservoir Water Level (RWL) and Surface Water Area (SWA) indices for estimating physical parameters in the management of water resources. We tested Landsat 8 (L8) and Sentinel-2 (S2) optical image time series, Sentinel-1 (S1) radar, spectral indices and validation with Jason-3 (J3) altimetry. The methodology was developed in the Google Earth Engine (GEE) operational routine, which streamlined the SWA mapping. The best results were between S2 and NDWI and threshold 0, with R² = 0.88 and RMSE of 11.59 km². As main limitations, we highlight the cloud cover for the optical images, which can decrease the temporal sampling, as well as the SAR backscatter response in the presence of bare soil and aquatic vegetation. We could attest that periodic remote sensing data are particularly useful for timely updating spatial variations of RWL and SWA in reservoirs.","PeriodicalId":14063,"journal":{"name":"International Journal of Hydrology","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80525509","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}