Development of an integrated conceptual model for the rational management of the transboundary Nestos River, Greece

Petalas, C.; Pliakas, F.; Diamantis, I.; Kallioras, Andreas

doi:10.1007/s00254-005-0032-0

Cited by 22 publications

(21 citation statements)

References 4 publications

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“…By the year 1958, the Nestos River has been channelized for flood control and land reclamation, so that the total stream flow in its reach at the Delta region is regulated. Complete control of the river has been achieved during the last decades, with two large dams at Thesavros and Platanovrisi sites (170 m and 95 m in height respectively) constructed by the Greek Public Power Corporation S.A. at a distance of 30 km from the borders of Bulgaria and Greece (Petalas et al 2005). The hydraulic characteristics of the Nestos channel have been altered due to changes of channel morphology in response to the changed flow and sediment transport regimes.…”

Section: Description Of the Study Areamentioning

confidence: 99%

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Determination of Hydraulic Conductivity of Unconsolidated River Alluvium from Permeameter Tests, Empirical Formulas and Statistical Parameters Effect Analysis

Pliakas

Petalas

2011

Water Resour Manage

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Hydraulic conductivity is an important parameter for the investigation of flow processes through streambeds. This paper presents a comparison of hydraulic conductivity estimates of unconsolidated sandy samples collected at four sites of the Nestos River point-bar deposits, Greece. Values of K were determined using laboratory permeameter tests as well as the widely applied empirical formulas of based on the grain-size distribution. In a statistical regression analysis, the relation between several graphical statistical grain size parameters and the determined K values, and the effect of these parameters on K estimates was investigated. For this study site it was found that the empirical formula of Loudon provided the most reliable K estimates for the upper 0.25 m of the streambed.

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Section: Description Of the Study Areamentioning

confidence: 99%

“…The sand deposits are moderately well sorted and negatively skewed. The width of the flood plain ranges from 160 m to 1,000 m (Petalas et al 2005).…”

Section: Description Of the Study Areamentioning

confidence: 99%

Determination of Hydraulic Conductivity of Unconsolidated River Alluvium from Permeameter Tests, Empirical Formulas and Statistical Parameters Effect Analysis

Pliakas

Petalas

2011

Water Resour Manage

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“…Nestos river trophic state assessment based on the classification scheme of temperate streams. [21] (a) Petalas et al [5] (b) Voutsa et al [28] (c) Haralambidou et al [24] (d) Gikas et al [18] together with the nutrient concentrations (NO 3 − , NO 2 − , NH 4 + , OP, TP) were taken into consideration. This regression analysis resulted in the following equation:…”

Section: Evaluation Of Eutrophication Trends -Empirical Model For Chlmentioning

confidence: 99%

“…A karstic area to the east of Nestos river is characterized by the presence of numerous gorges. [5] At Galani, Nestos river flows out of the mountainous part of its basin, while further downstream and up to the sea, the river is channelized, averting the hydraulic communication with the adjacent areas of the basin (Fig. 1).…”

Section: Introductionmentioning

confidence: 98%

Water quantity and quality assessment of lower Nestos river, Greece

Boskidis

Gikas

Sylaïos

et al. 2011

Journal of Environmental Science and Health, Part A

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Monitoring quantity and quality data of a 3-yr (2006-2009) survey in the lower reach of Nestos river are presented. For the purposes of this study, monitoring was taking place at six sites along the river course. Discharge measurements were made at four stations. Physicochemical parameters (i.e., electrical conductivity, pH, dissolved oxygen and water temperature) were measured in situ while water quality samples were collected on a bi-weekly basis at all six stations along the river. Water samples for chemical analyses were collected for the determination of total phosphorus, orthophosphate, nitrite and nitrate nitrogen, ammonia, biochemical oxygen demand (BOD), chemical oxygen demand (COD), chlorophyll-a, TSS, alkalinity, sulfuric and chloride anions, major cations (Na(+), K(+), Mg(+), Ca(+)) and metals. Two autographic telemetric stations also provided continuous stage and water quality data at two of the sites. ANOVA and t-test statistical analysis were used for the interpretation of the collected data. Nutrient concentrations were found within acceptable limits, while bicarbonates were the dominant ions. No significant seasonal and spatial variations were observed, suggesting little impact from human activities on the part of river basin under investigation.

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“…Our review suggests that methods and theory testing approaches stemming from our own research are primarily geared towards construction of further conceptual models through the rationale of converging findings in line with empirical studies concurrently with the process of development of our theoretical model. There are several other methods focusing on conceptual model development and the implementation of sustainable natural resource management (MartinezFernandez et al 2000;Petalas et al 2005); however, the emphasis was given on some specific methodologies where the approaches were found identical to current research concepts as in the case of the Himalayas of India. To accomplish this, a literature survey was conducted with a view to solving the problems of real world complexities in the form of conceptual model development (Van Riet and Cooks 1990;Tulloch 1999;Bettinger 1999;Jackson et al 2000;Bettinger and Boston 2001;Kaechele and Dabbert 2002;Gomez-Sal et al 2003;Zander, 2003;Hillman et al 2005;Janssen and van Ittersum 2007).…”

Section: State Of Art Of Modeling Approachmentioning

confidence: 99%

Conceptual model development for landscape management in the mountains of the Indian Himalayan region: an approach for sustainable socio-ecological development

Nautiyal¹,

Rado²,

Kaechele³

et al. 2010

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T his study aims at presenting a conceptual model for landscape management in the Himalayan region of India, using quantitative/mathematical approach. Keeping in view the requirement, (based on fifteen years empirical field work in the Himalayan region and as well as literature survey) the MODAM (Multiple Objectives Decision Support Tools for Landscape Management) model along with linear programming approach was adopted with a view to presenting additional methodological perspectives on interdisciplinary landscape research. The work has stemmed out from the original research contribution, which tries to integrate interdisciplinary research planning with landscape management related research in the Himalayan region. This biodiversity hotspot has relatively high complexity in terms of sustainable socioeconomic development vis a vis conservation and management of the resources. The concepts and insights presented in this article will provide the basis for a discussion, on decisionmaking issues among multidisciplinary experts with regard to sustainable socioecological development within complex environments.

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Development of an integrated conceptual model for the rational management of the transboundary Nestos River, Greece

Cited by 22 publications

References 4 publications

Determination of Hydraulic Conductivity of Unconsolidated River Alluvium from Permeameter Tests, Empirical Formulas and Statistical Parameters Effect Analysis

Determination of Hydraulic Conductivity of Unconsolidated River Alluvium from Permeameter Tests, Empirical Formulas and Statistical Parameters Effect Analysis

Water quantity and quality assessment of lower Nestos river, Greece

Conceptual model development for landscape management in the mountains of the Indian Himalayan region: an approach for sustainable socio-ecological development

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