Search

Your search keyword '"Karagiozova, Tzviatka"' showing total 6 results
Start Over Author "Karagiozova, Tzviatka" Publication Year Range Last 50 years
6 results on '"Karagiozova, Tzviatka"'

2. A catalogue of European intermittent rivers and ephemeral streams

Author

Sauquet, Eric, van Meerveld, Ilja, Gallart, Francesc, Sefton, Catherine, Parry, Simon, Gauster, Tobias, Laaha, Gregor, Alves, Maria Helena, Arnaud, Patrick, Banasik, Kazimierz, Beaufort, Aurélien, Bezdan, Atila, Datry, Thibault, De Girolamo, Anna Maria, Dörflinger, Gerald, Elçi, Alper, Engeland, Kolbjørn, Estrany, Joan, Fialho, Alice, Fortesa, Josep, Hakoun, Vivien, Karagiozova, Tzviatka, Kohnova, Silvia, Kriauciuniene, Jurate, Morais, Manuela, Ninov, Plamen, Osuch, Marzena, Reis, Edite, Rutkowska, Agnieszka, Stubbington, Rachel, Tzoraki, Ourania, Żelazny, Mirosław, RiverLy - Fonctionnement des hydrosystèmes (RiverLy), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Universität Zürich [Zürich] = University of Zurich (UZH), Institute of Environmental Assessment and Water Research (IDAEA), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), UK Centre of Ecology and Hydrology (UKCEH), Universität für Bodenkultur Wien = University of Natural Resources and Life [Vienne, Autriche] (BOKU), PORTUGUESE ENVIRONMENTAL AGENCY PRT, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Risques, Ecosystèmes, Vulnérabilité, Environnement, Résilience (RECOVER), Aix Marseille Université (AMU)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Warsaw University of Life Sciences (SGGW), University of Novi Sad, IRSA CNR WATER RESEARCH INSTITUTE NATIONAL RESEARCH COUNCIL OF ITALY BRUGHERIO ITA, Ministry of Agriculture Rural Development and Environment, Partenaires INRAE, Dokuz Eylül Üniversitesi = Dokuz Eylül University [Izmir] (DEÜ), Norwegian Water Resources and Energy Directorate (NVE), Department of Geography and INAGEA, University of the Balearic Islands., University of the Balearic Islands (UIB), Bureau de Recherches Géologiques et Minières (BRGM) (BRGM), Institute of Geophysics, Polish Academy of Sciences64, PL-01452, Warsaw, National Institute of Meteorology and Hydrology, Bulgarian Academy of Sciences (BAS), Slovak University of Technology in Bratislava, Lithuanian Energy Institute, University of Évora [Portugal], UNIVERSITY OF AGRICULTURE IN KRAKOW KRAKOW POL, Nottingham Trent University, University of the Aegean, Uniwersytet Jagielloński w Krakowie = Jagiellonian University (UJ), COST, Riverly (Riverly), and University of Natural Resources and Life Sciences (BOKU)

Subjects
temporary river, 010504 meteorology & atmospheric sciences, ephemeral stream, 0207 environmental engineering, 02 engineering and technology, [SHS.GEO]Humanities and Social Sciences/Geography, 15. Life on land, Intermittent river, ephemeral stream, Europe, river flow regime, drying, headwater, temporary river, 01 natural sciences, 6. Clean water, Europe, 13. Climate action, river flow regime, drying, [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology, 020701 environmental engineering, Intermittent river, headwater, 0105 earth and related environmental sciences
Abstract

SMIRES is a COST Action addressing the Science and Management of Intermittent Rivers & Ephemeral Streams (coord. T. Datry, INRAE, and G. Singer, University of Innsbruck; http://www.smires.eu). This COST Action had brought together scientists from various research field and stakeholders to develop a European multidisciplinary network for synthesising the fragmented and recent knowledge on temporary water courses, improving our understanding of Intermittent Rivers and Ephemeral Streams (IRES) and translating this into a science-based, sustainable management of river networks. The working group “Prevalence, distribution and trends of IRES” (WG1) has the central role to provide the physical basis of the SMIRES Action. One of the tasks of WG1 was to compile flow gauging data at the European scale. As part of this work, examples of intermittent rivers and ephemeral streams were collected across Europe, including gauged catchments with both natural and highly influenced river flow regimes. A total of 40 examples have been put together in this catalogue to provide an overview of the variety of IRES in Europe. The selected IRES are not meant to be representative of all intermittent water courses in Europe but rather highlight the variety in these water courses. Introductory pages describe the procedures used to create the catalogue including definitions of the statistical measures reported for the individual intermittent rivers and ephemeral streams, and provide an overview of the catalogued water courses. Information on the selected gauged intermittent rivers and ephemeral streams is summarised in a two-page document: The first standardized page describes the main characteristics of the catchments (land-use, geology, climate, etc.) and the river flow regime. Two panels display the hydrographs and flow durations curves, and a table gives metrics specific to river flow intermittence relevant for ecology. The second page is dedicated to the description and reasons for intermittence. A short description about the spatio-temporal pattern of zero-flow events. This section may describe the seasonal behaviour of the stream, observed long-term trends, locations with frequently observed zero-flow events along the river network, etc. The monitoring network, including gauging stations and other types of observations (e.g. visual inspection of the flow states at different locations along the river) in the catchment, are also described.

Published
2020

5. Revision of River & Lake Typology in Bulgaria within Ecoregion 12 (Pontic Province) and Ecoregion 7 (Eastern Balkans) According to the Water Framework Directive.

Author

Cheshmedjiev, Svetoslav D., Karagiozova, Tzviatka L., Michailov, Michail A., and Valev, Valentin P.

Subjects
LAKES, RIVERS, ECOLOGICAL regions, BIOGEOGRAPHY
Abstract

A revision of river and lake typology in Bulgaria has been done within the Ecoregion No. 12 Pontic province and Ecoregion No. 7 Eastern Balkans according to the Water Framework Directive 2000/60/EC. Certain geographic changes between the Ecoregion No. 12 and Ecoregion No. 7 have been proposed based on existing biogeographic data, at the beginning. The whole part of the Danube and Black Sea River Basin district have been associated to the Pontic Province (ER No. 12) as well as the rest part of the Southern Bulgaria (Maritsa river basin, Mesta RB and Struma RB) has been allied to the Eastern Balkan (ER No. 7). A serious reduction of the total number of river types (from 33 to 16 types) was justified using clear hydromorphological and biological criteria, e.g. ecoregion, vertical factors (4 altitude zones, main substratum characteristics, slope, and other supplementary factors such as fish and vegetation zonation, climate maps) and horizontal factors (calcareous geology, salinity, size category). Similar reduction of the number of lake types (from 33 to 17 types) was proposed in parallel with a significant modification of the lake typology method. Lake typology in Bulgaria was based on the obligatory factors (4 altitude zones, size typology based on surface area, depth, salinity and geology) and optional factors (residence time, mixing characteristics, e.g. monomictic, dimictic and polymictic, presence of profundal zone, reference trophic status). Seven lake types were identified as "reservoir types", which were only presented by heavily modified and artificial water bodies without any possibility for natural lake equivalent within the country, or region. Four coastal lake types with various salinity (from freshwater <0.5 ‰ to hypersaline >40‰) have been reviewed as belonging to the category "transitional waters". [ABSTRACT FROM AUTHOR]

Published
2010

6. A catalogue of the representative European intermittent rivers.

Author

Sauquet, Eric, van Meerveld, Ilja, Sefton, Cath, Gallart, Francesc, Laaha, Gregor, Bezdan, Atila, Banasik, Kazimierz, De Girolamo, Anna Maria, Gauster, Tobias, Karagiozova, Tzviatka, Kriauciuniene, Jurate, Ninov, Plamen, Osuch, Marzena, Parry, Simon, Rutkowska, Agnieszka, and Tzoraki, Ourania

Published
2019

Catalog

Books, media, physical & digital resources
See catalog results