کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5742202 1617391 2017 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A modeling approach for a cascade of reservoirs in the Juquiá-Guaçu River (Atlantic Forest, Brazil)
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
A modeling approach for a cascade of reservoirs in the Juquiá-Guaçu River (Atlantic Forest, Brazil)
چکیده انگلیسی


- Limnological variables were selected to characterize a cascade of reservoirs.
- The zero-dimension model was selected to describe the mass balance of variables.
- The elements trap alters within the reservoir itself and among the reservoirs.
- The cascade system of reservoirs reduced the values by 87% of the variables.
- The reductions stress the role of this system for mitigation of eutrophication.

In a cascade of reservoirs, the events that occur in the upstream reservoir can be transferred to the downstream ones. Thus, the water quality of the second and subsequent reservoirs usually changes. Based on a zero-dimensional model, this work describes the mass balances of 23 limnological variables in a system of 6 cascade reservoirs located in a well-preserved hydrographic basin (within the Brazilian Tropical Atlantic Forest). Ecosystem services are also mentioned to stress the importance of this system to improve the water quality of the Juquiá-Guaçu River. Samples were taken from the reservoirś inputs, in the lacustrine region, and in the Juquiá-Guaçu River downstream of each reservoir. According to the zero-dimensional model (continuous stirred tank reactor), it can be concluded that: i) the retention intensities of the elements varied within each reservoir itself and among the reservoirs. These differences occur because chemical and biotic processes concerning retentions are different, and the specific physical conditions (e.g. water velocity, flow, stratification) related to the retentions of each element are different; ii) not all reservoirs presented high assimilation coefficients for all variables, the six reservoirs were very efficient in terms of retaining the elements; iii) the system reduced the amounts of 87% of the variables; iv) for variables related to erosion and runoff the cascade of reservoirs was not able to decrease the values; v) the The high percentage of retention of the limnological variables enables us to evaluate the importance of these reservoirs to reduce eutrophication (nitrogen and phosphorus compounds), turbidity, TS, color, coliforms (total and fecal) from the Juquiá-Guaçu River.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecological Modelling - Volume 356, 24 July 2017, Pages 48-58
نویسندگان
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