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| Registros recuperados: 92 | |
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| GUEDES,HUGO A. S.; SILVA,DEMETRIUS D.; DERGAM,JORGE A.; ELESBON,ABRAHÃO A. A.. |
| ABSTRACT This paper aimed at determining the environmental flow regime in a 1 km stretch of the Formoso River, MG, using River2D model. To carry out the ecohydrological modeling, the following information was used: bathymetry, physical and hydraulic features, and the Habitat Suitability Index for species of the Hypostomus auroguttatus. In the River2D, the Weighted Usable Areas were determined from the average long-term streamflows with percentage from 10% to 100%. Those streamflows were simulated for the later construction of optimization matrices that maximize the habitat area throughout the year. For H. auroguttatus Juvenile, higher values of Weighted Usable Area were associated with the percentage of 60% and 70% of the average long-term streamflows in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecohydrology; Hydrodynamic modeling; River2D; Water resources; WUA. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000602429 |
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| Souza,A.L.M.; Guimarães,J.T.; Brigida,A.I.S.; Luiz,D.B.; Franco,R.M.; Mesquita,E.F.M.. |
| ABSTRACT The high consumption of water and uncontrolled wastewater generation commonly seen in fish processing plants are a matter of concern. Sustainable actions must be taken to addres this issue. The present study aimed to quantify the water used in the processing of Atlantic Salmon (Salmo salar) and Dolphinfish (Coryphaena hippurus) in a fish warehouse in Rio de Janeiro, Brazil, through water balance and mass balance at each development stage. According to the data obtained, the warehouse showed higher total water use, both in general (7,173.28±265.77m3/month), with most water use intended for processing support activities, approximately 45.00% (3,186.82±407.57m3/month); specifically, in the processing of the selected raw materials, with greater... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish processing; Water resources; Sustainability. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000401240 |
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| Muñoz,Enrique; Álvarez,César; Billib,Max; Arumí,José Luis; Rivera,Diego. |
| Global gridded climatological (GGC) datasets, including precipitation and temperature, are becoming more and more precise, accessible, and common, but the utility of these datasets and their limits for hydrological research are still not well determined. In this paper, we compare the performance of two hydrological models that are identical in structure but built with two different inputs: rainfall from rain gauge stations and from a GGC dataset. The objective is to evaluate the utility of gridded datasets in water resource availability studies mainly for hydroelectric and agricultural purposes. The Andean basin of the Laja River, located in south-central Chile, was chosen for this study. It was based on an 18-yr simulation, and it was concluded that i)... |
| Tipo: Journal article |
Palavras-chave: Flow simulation; Monthly water balance; Surface water hydrology; Water resources. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000300018 |
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| Fazey, Ioan; Institute of Rural Sciences, University of Wales, Aberystwyth; ioan.fazey@gmail.com; Proust, Katrina; Centre for Resource and Environmental Studies, Australian National University;; Newell, Barry; Australian National University;; Johnson, Bill; Department of Environment and Conservation;; Fazey, John A.; University of Wales, Bangor;. |
| Knowledge that has been developed through extensive experience of receiving and responding to ecological feedback is particularly valuable for informing and guiding environmental management. This paper captures the implicit understanding of seven experienced on-ground conservation managers about the conservation issues affecting the Ramsar listed Macquarie Marshes in New South Wales, Australia. Multiple interviews, a workshop, and meetings were used to elicit the manager's knowledge. The managers suggest that the Macquarie Marshes are seriously threatened by a lack of water, and immediate steps need to be taken to achieve more effective water delivery. Their knowledge and perceptions of the wider societal impediments to achieving more effective water... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Conservation management; Water resources; Wetland; Experience; Traditional ecological knowledge; Tacit knowledge. |
| Ano: 2006 |
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| Conroy, Michael J; USGS Cooperative Fish and Wildlife Research Unit; conroy@forestry.uga.edu; Allen, Craig; University of Nebraska; allencr@unl.edu; Peterson, James T; USGS Cooperative Fish and Wildlife Research Unit;; Pritchard, Lowell, Jr.; Emory University; lpritc2@emory.edu; Moore, Clinton T; ;. |
| The southern Piedmont of the southeastern United States epitomizes the complex and seemingly intractable problems and hard decisions that result from uncontrolled urban and suburban sprawl. Here we consider three recurrent themes in complicated problems involving complex systems: (1) scale dependencies and cross-scale, often nonlinear relationships; (2) resilience, in particular the potential for complex systems to move to alternate stable states with decreased ecological and/or economic value; and (3) uncertainty in the ability to understand and predict outcomes, perhaps particularly those that occur as a result of human impacts. We consider these issues in the context of landscape-level decision making, using as an example water resources and lotic... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Piedmont; Adaptive management; Land use; Model; Resilience; Scale; Sprawl; Uncertainty; Urbanization; Water resources. |
| Ano: 2003 |
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| Lebel, Louis; USER, Chiang Mai University; louis@sea-user.org; Garden, Po; USER, Chiang Mai University; po@sea-user.org; Imamura, Masao; USER, Chiang Mai University; masao@sea-user.org. |
| The appropriate scales for science, management, and decision making cannot be unambiguously derived from physical characteristics of water resources. Scales are a joint product of social and biophysical processes. The politics-of-scale metaphor has been helpful in drawing attention to the ways in which scale choices are constrained overtly by politics, and more subtly by choices of technologies, institutional designs, and measurements. In doing so, however, the scale metaphor has been stretched to cover a lot of different spatial relationships. In this paper, we argue that there are benefits to understanding—and actions to distinguish—issues of scale from those of place and position. We illustrate our arguments with examples from the... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Governance; Institutions; Knowledge; Mekong; Politics; Scale; Science; Water resources. |
| Ano: 2005 |
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| Mendonça,Thaís G.; Silva,Marília B. da; Pires,Regina C. de M.; Souza,Claudinei F.. |
| ABSTRACT Agriculture is one of the segments that most uses water and developments have been made to save irrigation water. Deficit irrigation is a technique that can contribute to production and water saving in agriculture. This study aimed to evaluate the viability of deficit irrigation in tomato production irrigated by subsurface drip in a greenhouse and estimate water saving. The experiment was conducted at the CCA/UFSCar, in Araras, São Paulo, Brazil, with grape tomato cultivation. It consisted of three treatments, 100 % water depth and deficit irrigation (75 and 50 % of water depth), with a randomized block design. Irrigation management was performed using mean soil moisture data collected through TDR probes installed in each treatment. Tomato plants... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: TDR; Water resources; Irrigation management; Water content. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000400453 |
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| Arai,Fabiane K.; Pereira,Silvio B.; Gonçalves,Geula G. G.. |
| The quantitative knowledge of hydrological parameters (rainfall and flow) and their spatial and temporal variability on the regions or basins should be understood as essential to the efficient planning and management of water resources. Because the Ivinhema Basin, located in the state of Mato Grosso do Sul, Brazil, represents an important inductor on the region agricultural development, characterized as a major producer of grains and meat, it was used to characterize the hydrological study. Knowing the rainfall, flow and drainage area of each of the studied affluent, it was calculated the proportion of contribution of the affluent. To that end, it was proposed the concepts of potential and real contributions, aiming to identify the proportion of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: River discharge; Water resources; Rainfall. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000300018 |
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| Coelho,Clívia D.; Silva,Demetrius D. da; Sediyama,Gilberto C.; Moreira,Michel C.; Pereira,Silvio B.; Lana,Ângela M. Q.. |
| ABSTRACT Evaporation rates in reservoirs influence the volume of water available for multiple uses. Thus, the objective of this study was to estimate the evaporation rates and the evaporated volumes per unit time in the Tucuruí-PA and Lajeado-TO reservoirs based on the methods in Linacre (1993), Kohler et al. (1955), Morton (1983), Bruin & Keijman (1979) and Penman (1948) method was adopted as the standard. The mean annual evaporation rates in the Tucuruí and Lajeado reservoirs, estimated by the Penman method, were similar, with values of 1,784 mm and 1,882 mm, respectively. None of the alternative analyzed methods could be used to estimate the mean annual evaporation in the Tucuruí and Lajeado reservoirs and could not replace the Penman method.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lake evaporation; Multiple water uses; Water resources. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000100038 |
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| Registros recuperados: 92 | |
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