Ecotechnological models for reservoir water quality management

Straškraba, Milan

doi:10.1016/0304-3800(94)90108-2

Cited by 51 publications

(29 citation statements)

References 129 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Optimisation theory has been used mainly for modelling resource or ecosystem management (e.g. Van der Molen and Pintér, 1993;Straškraba, 1994;Håkanson, 1995;Tiwari et al, 1996;Williams, 1996). Our paper illustrates how optimisation theory can be used for the analysis of plasticity in shoot morphology of plants in response to environmental changes, as well as the analysis of diversity in morphology.…”

Section: Discussionmentioning

confidence: 98%

The effect of population density on shoot morphology of herbs in relation to light capture by leaves

Sekimura

Koebernick

Лі

et al. 2000

Ecological Modelling

View full text Add to dashboard Cite

Plants change their shapes, depending on their environment, for example, plant height increases with increasing population density. We examined the density-dependent plasticity in shoot morphology of herbs by analysing a mathematical model which identifies a number of key factors that influence shoot morphology, namely (i) solar radiation captured by leaves; (ii) shading from neighbouring plants; and (iii) utilisation efficiency of resource by leaves, stems and veins. An optimisation theory was used to obtain optimal shoot morphology in relation to maximal light capture by leaves, under trade-offs of resource partition among organs. We first evaluated the solar radiation flux per unit leaf area per day for different shoot forms. Our model predicts that the optimal internodal length of the stem that brings about the maximal light capture by leaves increases with plant population density, and this is consistent with experimental data. Moreover, our simple model can also be extended to explain the morphological plasticity in other herbs (i.e. stemless plants) that are different from our model plants with a stem. These findings illustrate how optimisation theory can be used for the analysis of plasticity in shoot morphology of plants in response to environmental changes, as well as the analysis of diversity in morphology.

show abstract

Section: Discussionmentioning

confidence: 98%

The effect of population density on shoot morphology of herbs in relation to light capture by leaves

Sekimura

Koebernick

Лі

et al. 2000

Ecological Modelling

View full text Add to dashboard Cite

show abstract

“…Locations of outlet structures are positioned according to specific purposes of the reservoir. These positions of outlet and operational releases affect flow and stratification conditions within the reservoir (Straskraba and Tundisi, 1999). Most large dams in Korea have deep cold water discharge facilities, and this cold discharged water is stored in a second reservoir created by a regulation dam, which is constructed just downstream of the main dam in order to raise the temperature of the discharged water.…”

Section: Outlet Locationmentioning

confidence: 99%

“…Nitrifying bacteria convert NH4-N and NO2-N to less hamiful NO3-N. However, when a specific nitrate concentration is exceeded (laws in different countries specify NO3-N values between 20-50 mg/L), there is a danger associated with use of the water for consumption by babies (Straskraba and Tundisi, 1999).…”

Section: Organicsmentioning

confidence: 99%

Eco-hydraulic Modelling of Eutrophication for Reservoir Management

Jung¹

2010

View full text Add to dashboard Cite

“…This system includes land use and economic development, water abstraction, land and water ecosystem dynamics and socio-economic development (Gunkel and Sobral, 2007). Goals for the integrated river-basin management are the reduction of water quality impact and guaranteeing long term water use (Straskraba and Tundisis, 1999;Tundisi et al, 2008), the reduction of the impact of nature, mainly on the biodiversity and soils, and from a global point of view, the reduction of greenhouse gases (GHG) emissions by oligotrophication.…”

Section: Increase In Regulation: Reservoirsmentioning

confidence: 99%

Review.Water resources deficit and water engineering

Tarjuelo

Jiang

Moreno

et al. 1970

Span. j. agric. res.

View full text Add to dashboard Cite

The increasing demand of water for different uses, together with the variable availability of this resource, which is due to the increasingly frequent periods of drought, make necessary to undertake a set of structural and contextual actions to cope with the permanent or temporary scarcity situations. Within the search for solutions to the progressively more widespread situation of limited water availability for agriculture, this paper aims to state the role that engineering can play to face up this deficit, taking into account the social, economic, and environmental issues of water, together with the priority of uses. Structural measures can help to:1) increase the water availability (increased or more flexible supply through reservoirs, water transfers, water rights interchange centres, desalination, reuse, aquifer recovery, and conjunctive use of surface water and groundwater), and 2) rationalize water consumption by improving demand management, including the irrigation management improvement, as well as maximizing the efficiency of irrigation systems. In addition to these measures, other social issues can be implemented through public awareness and education, adequate economic policies, legislative adaptation, and technical support to municipalities and water use associations. Thus, to face up water scarcity in a region it is necessary to identify the different water sources, including alternative sources such as desalination and reuse, and develop an appropriate model of management as well as infrastructure for water storage and regulation.Additional key words: desalination; drought; irrigation; wastewater reuse; water management; water scarcity; water transfers. ResumenRevisión. El déficit hídrico y la ingeniería del agua La creciente demanda de agua para los distintos usos, junto con la variabilidad en la disponibilidad de este recurso debido a los cada vez más frecuentes periodos de sequía, hacen necesario llevar a cabo un conjunto de acciones estructurales y coyunturales para poder hacer frente a las situaciones de escasez temporal o permanente que se producen. Dentro de la búsqueda de soluciones a la situación cada vez más generalizada de limitada disponibilidad de agua para la agricultura, el presente trabajo pretende incidir en el papel que puede jugar la ingeniería a la hora de hacer frente a esta situación de déficit, teniendo en cuenta los aspectos sociales, económicos y ambientales del agua y sus prioridades de uso. Las medidas estructurales pueden contribuir a: 1) aumentar los recursos (aumento o flexibilidad de la oferta mediante embalses, trasvases, centros de intercambio de derechos de agua, desalinización, reutilización, recarga de acuíferos, o el uso conjunto de aguas superficiales y subterráneas), o 2) racionalizar los consumos (mejorando la gestión de la demanda, incluyendo la mejora de la gestión del regadío y la mejora de la eficiencia del riego en parcela). Además de estas medidas puede llevarse a cabo otras de carácter social como la concienciación y educación ciudadana, el fo...

show abstract

Ecotechnological models for reservoir water quality management

Cited by 51 publications

References 129 publications

The effect of population density on shoot morphology of herbs in relation to light capture by leaves

The effect of population density on shoot morphology of herbs in relation to light capture by leaves

Eco-hydraulic Modelling of Eutrophication for Reservoir Management

Review.Water resources deficit and water engineering

Contact Info

Product

Resources

About