Development of Classification System and Biological Reference Conditions for Bulgarian Rivers and Lakes According to the Water Framework Directive

Cheshmedjiev, Svetoslav; Mladenov, Rumen; Belkinova, Detelina; Gecheva, Gana; Dimitrova-Dyulgerova, Ivanka; Ivanov, P.; Mihov, S.

doi:10.1080/13102818.2010.10817832

Cited by 8 publications

(11 citation statements)

References 1 publication

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“…The Algae Group Index (AGI, Catálan Index) was calculated for each sample [17]. The interpretation of phytoplankton data based on the above metrics followed the classification system for the mesotrophic lake type in Bulgaria [18].…”

Section: Phytoplankton Metricsmentioning

confidence: 99%

Integrated Assessment of the Ecological Status of Bulgarian Lowland and Semi-Mountain Natural Lakes

Gecheva¹,

Yurukova

Cheshmedjiev³

et al. 2013

JEP

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This work focuses on an integrated approach for lake ecological status assessment, elaborated according to the requirements of the European Water Framework Directive (WFD). Data from five lowland and semi-mountain lakes in Bulgaria (Southeast Europe) collected from two years (2011-2012) form the basis for an integrated assessment and the definition of reference conditions. Several metrics were applied in combination, to classify lakes into five ecological status classes. Assemblages of aquatic organisms: phytoplankton, macrophytes and benthic macroinvertebrates, together with 11 supporting physico-chemical parameters were studied. The assessed unique conditions suggested that reference conditions of Bulgarian lakes have natural variability. This first baseline study illustrated specific cases within the lake types that should be assessed in details before providing standardized classification systems in compliance with the requirements of WFD.

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Section: Phytoplankton Metricsmentioning

confidence: 99%

Integrated Assessment of the Ecological Status of Bulgarian Lowland and Semi-Mountain Natural Lakes

Gecheva¹,

Yurukova

Cheshmedjiev³

et al. 2013

JEP

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“…The Algae Group Index (AGI, Catálan Index) was calculated for each sample (6). The interpretation of phytoplankton data based on the above metrics followed the classification system for the oligotrophic lake type in Bulgaria (7).…”

Section: Assessment Of Ecological Status and Preliminary Results On Rmentioning

confidence: 99%

“…Recently, a study of the main phytoplankton, macrophyte and zoobenthic characteristics of 80 lakes and reservoirs in Bulgaria was implemented by Cheshmedjiev et al (7). Detailed integrated field investigations of glacial lakes in Bulgaria have not been carried out, although these ecosystems have environmental importance and sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Ecological Status and Preliminary Results on Reference Conditions in Alpine Glacial Lakes (Bulgaria)—A Contribution to the Implementation of the Water Framework Directive

Cheshmedjiev

Gecheva

Belkinova

et al. 2013

Biotechnology & Biotechnological Equipment

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“…Cheshmedjiev et al (2010) mentioned that the assessment of water body for rivers is difficult to be summarized statistically because of the extremely large differences in size, both in geographic relation and in relation with relative water quantities. Concentrations of Cd, Cu, Pb and Zn in river water were found to be highest in close proximity to locations of Cu and PbZn mining regions in the Maritsa catchment.…”

Section: Discussionmentioning

confidence: 99%

Ecological Monitoring of Danube water Quality in Budapest Region

S.¹

2012

American Journal of Environmental Sciences

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Problem statement: Serious health problems and other economic costs related to water treatment, remediation and locating a new water supply, become an evidence of water pollution caused by human activities. The main problems of the Danube River basin are associated with nutrients, organic pollution and hazardous pollutants. The aim of the study is to assess the surface water of the Danube in Budapest for sustainability of human and environment health. The relation between O 2 and Chl-a content of the samples, clearly shows that the cause of high dissolved O 2 content in the water lies in accelerated primary production. Enumerations of both total and fecal Coliforms are continuously growing during the investigation periods. These results suggested that bacteriological properties can be a specific indicator of fecal contamination and organic pollution. With large numbers of new chemical substances entering the river ecosystem, continuous monitoring systems for their detection will become increasingly important with respect to environmental effects they produce, in addition to other toxic effects. The challenges to continuous physical, chemical, biological and bacteriological monitoring will be immense.

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Development of Classification System and Biological Reference Conditions for Bulgarian Rivers and Lakes According to the Water Framework Directive

Abstract: ABSTRACT

Cited by 8 publications

References 1 publication

Integrated Assessment of the Ecological Status of Bulgarian Lowland and Semi-Mountain Natural Lakes

Integrated Assessment of the Ecological Status of Bulgarian Lowland and Semi-Mountain Natural Lakes

Assessment of Ecological Status and Preliminary Results on Reference Conditions in Alpine Glacial Lakes (Bulgaria)—A Contribution to the Implementation of the Water Framework Directive

Ecological Monitoring of Danube water Quality in Budapest Region

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