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Registros recuperados: 97
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A comparative study of marine litter on the seafloor of coastal areas in the Eastern Mediterranean and Black Seas ArchiMer
Ioakeimidis, C.; Zeri, C.; Kaberi, H.; Galatchi, M.; Antoniadis, K.; Streftaris, N.; Galgani, Francois; Papathanassiou, E.; Papatheodorou, G..
In the present work, abundance, spatial distribution and qualitative composition, of benthic marine litter, were investigated in five study areas from the Eastern Mediterranean and Black Seas (Saronikos, Patras and Echinades Gulfs; Limassol Gulf; Constanta Bay). Surveys were performed using the monitoring protocol proposed by the Technical Group for Marine Litter. Densities ranged from 24 items/km(2) to 1211 items/km(2), with the Saronikos Gulf being the most affected area. Plastics were predominant in all study areas ranging from 45.2% to 95%. Metals and Glass/Ceramics reached maximum values of 21.9% and of 22.4%. The size distribution of litter items showed that >= 50% fall into medium size categories (10 x 10 cm, 20 x 20 cm) along with an elevated...
Tipo: Text Palavras-chave: Litter; Benthic; Pollution; Eastern Mediterranean; Black Sea.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00251/36179/34730.pdf
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Achieving good environmental status in the Black Sea: scale mismatches in environmental management Ecology and Society
O'Higgins, Tim; Scottish Association for Marine Science; Tim.O'Higgins@sams.ac.uk; Farmer, Andrew; Institute for European Environmental Policy; AFarmer@ieep.eu; Daskalov, Georgi; IBER-BAS;; Knudsen, Stale; University in Bergen; stale.knudsen@sosantr.uib.no; Mee, Laurence; Scottish Association for Marine Science; laurence.mee@sams.ac.uk.
The Black Sea has suffered severe environmental degradation. Governance of the Black Sea region is complex and results in a series of scale mismatches which constrain management. This paper develops a simple classification of spatial scale mismatches incorporating the driver, pressure, state, welfare, response (DPSWR) framework. The scale mismatch classification is applied to two major environmental problems of the Black Sea, eutrophication and small pelagic fisheries. A number of scale mismatches are described and classified and potential solutions are identified.
Tipo: Peer-Reviewed Reports Palavras-chave: Black Sea; Ecosystem approach; Eutrophication; Fisheries; Marine strategy framework directive; Scale mismatch.
Ano: 2014
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Analyse des processus sedimentaires recents dans l'eventail profond du Danube (mer Noire) ArchiMer
Popescu, Irina.
This study is focusing on the architecture and recent sedimentary evolution of the Danube channel, the youngest channel-levee system in the Danube deep-sea fan. The study was conducted as part of the BlaSON French-Romanian Project, and combined high-resolution seismic-reflection profiles and chirp profiles with multibeam bathymetry and piston cores. This data set was acquired in 1998 during a joint survey IFREMER-GeoEcoMar of the north-western Black Sea. Previous seismic and acoustic data were also used. The Danube deep-sea fan is a large passive-margin mud-rich fan. Like the other systems of this type (Amazon fan, Mississippi fan or Indus fan) the Danube fan consists of stacked channel-levee systems intercalated with mass-transport deposits. Seismic and...
Tipo: Text Palavras-chave: High resolution seismic; Lowstand palaeogeography; Submarine canyons; Deep sea fans; Black Sea; Sismique haute résolution; Paléogéographie; Canyon sous marin; Eventail profond; Mer Noire.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/2002/these-1206.pdf
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Annual dynamics of abundance, biomass and survival of meroplankton in Sevastopol Bay, Black Sea IBSS Repository
Pavlova, E. V.; Murina, V. V.; Kemp, R. B.; Wilson, J. G.; Parchevsky, V. P..
The first comprehensive data on species composition, abundance, biomass and survival (living/dead ratio) of meroplankton in Sevastopol Bay (Black Sea) are presented. Marked differences were observed between the years 1998 and 1999, and these could be attributed to the hydrology and the eutrophication status of the different parts of the Bay. Shannon index and selected community parameters (number of species, biomass, numbers of individuals) indicated that South Bay was the worst affected part of the Bay with the greatest eutrophication impact on the meroplankton. The early larval stages of the barnacle Balanus improvisus and of the polychaete Polydora sp. were the most sensitive to presumed environmental stresses. It is suggested that the mortality of...
Tipo: Journal Contribution Palavras-chave: Abundance; Biomass; Survival; Meroplankton; Environmental conditions; Sevastopol Bay; Black Sea; Численность; Биомасса; Выживаемость; Меропланктон; Среда; Севастопольская бухта; Черное море Abundance Biomass Survival Meroplankton Environmental conditions Biomass Survival Environmental conditions http://aims.fao.org/aos/agrovoc/c_926 http://aims.fao.org/aos/agrovoc/c_7538 http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2007 URL: http://repository.ibss.org.ua/dspace/handle/99011/301
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Anomalously deep BSR related to a transient state of the gas hydrate system in the western Black Sea ArchiMer
Ker, Stephan; Thomas, Yannick; Riboulot, Vincent; Sultan, Nabil; Bernard, Céline; Scalabrin, Carla; Ion, G; Marsset, Bruno.
A comprehensive characterization of the gas hydrate system offshore the western Black Sea was performed through an integrated analysis of geophysical data. We detected the Bottom Simulating Reflector (BSR), which marks, in this area, the base of gas hydrate stability. The observed BSR depth does not fit the theoretical steady-state base of gas hydrate stability zone (BGHSZ). We show that the disparity between the BSR and predicted BGHSZ is the result of a transient state of the hydrate system due to the ongoing re-equilibrium since the Last Glacial Maximum. When gas hydrates are brought outside the stability zone due to changes in temperature and sea level, their dissociation generates an increase in interstitial pore pressure. This process is favorable to...
Tipo: Text Palavras-chave: Gas hydrate; BSR; Excess pore pressure; Black Sea.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00474/58531/61081.pdf
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Are Preferences for Environmental Quality Sensitive to Financial Funding Schemes? Evidence from a Marine Restoration Programme in the Black Sea AgEcon
Remoundou, Kyriaki; Koundouri, Phoebe; Adaman, Fikret; Nunes, Paulo A.L.D..
This paper uses a non-market valuation study to elicit consumers’ preferences for a marine restoration programme in the Black Sea aiming to reduce the level of public health risk from bathing and improve water quality and the overall level of marine biodiversity. In this context, we administer a stated choice experiment in coastal settlements in Ukraine and Turkey and employ two tax revenue reallocation schemes as payment vehicles. One proposes the financing of the marine restoration programme by the reduction of the public budget for renewable energy and the second by the reduction of the public budget on training for civil servants. We examine the stated preferences and the subsequently derived economic value estimates in the two treatments with the aim...
Tipo: Working or Discussion Paper Palavras-chave: Non-Market Valuation; Stated Choice Experiment; Payment Vehicle; Tax Revenues Reallocation; Marine Resources; Black Sea; Marine Biodiversity; Developing Countries; Environmental Economics and Policy; Q22; Q28.
Ano: 2011 URL: http://purl.umn.edu/108204
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Availability of data for the Black Sea climate change research IBSS Repository
Vladymyrov, V..
This review presents a brief analysis and sources (including URLs for the Internet sources) of the most interesting and informative Black Sea oceanographic data sets (excluding satellite data) that are now available for the scientific community with the main attention on the long term data sets. The results of the analysis show that a number of the available Black Sea datasets is growing permanently. However, this process is still rather slow and insufficient. One can hope that new international projects that cover the Black Sea region will drastically improve the situation in nearest years. The attempts should be made as well to create the united reliable quality checked data time series especially for biological data for which long time series do not...
Tipo: Proceedings Paper Palavras-chave: Black Sea; Data; Database; Climate change; Internet.
Ano: 2008 URL: http://repository.ibss.org.ua/dspace/handle/99011/697
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Barriers in the pelagic: population structuring of Calanus helgolandicus and C. euxinus in European waters Naturalis
Yebra, L.; Bonnet, D.; Harris, R.P.; Lindeque, P.K.; Peijnenburg, K.T.C.A..
Molecular studies of marine plankton have shown that ecological and/or environmental barriers play an important role in separating populations. Calanoid copepods are central in marine ecosystems, and dramatic biogeographical shifts in copepod assemblages associated with recent climate warming have been reported. We examined spatial population structuring in European waters of the Atlantic Ocean and Mediterranean Sea of Calanus helgolandicus and its sister species, C. euxi nus, from the Black Sea based on genetic and morphometric characters. The aims were to identify barriers to dispersal, relate these to hydrographic characteristics and infer historical patterns of distribution and demography. We analysed a 408 bp fragment of the mitochondrial 16S gene...
Tipo: Article / Letter to the editor Palavras-chave: Calanus helgolandicus; Calanus euxinus; 16S rDNA; Mediterranean Sea; North Atlantic Ocean; Black Sea; 42.74.
Ano: 2011 URL: http://www.repository.naturalis.nl/record/470574
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Black Sea "Lake" reservoir age evolution since the Last Glacial - Hydrologic and climatic implications ArchiMer
Soulet, Guillaume; Menot, Guillemette; Garreta, Vincent; Rostek, Frauke; Zaragosi, Sebastien; Lericolais, Gilles; Bard, Edouard.
Chronologies of sediments that document the last glacial history of the Black Sea "Lake" are hampered by issues relating to reservoir age. Regulated by basin hydrology, reservoir ages represent a tool that could potentially be used to better understand the response of Black Sea "Lake" hydrology to climate change. Therefore, deciphering reservoir age evolution is crucial both for better constraining the basin chronological framework and for providing new insights into our understanding of Black Sea "Lake" hydrology. By tuning a meaningful new high-resolution geochemical dataset (obtained from core MD04-2790) to a climate reference record, here, we propose a reliable chronology spanning the last 32 kyr BP. The chronology is compared to a large AMS...
Tipo: Text Palavras-chave: Black Sea; Reservoir age; Radiocarbon; Last Glacial; Last Deglaciation; Paleoclimate.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00043/15379/12817.pdf
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Black Sea Mnemiopsis Leidyi database and plankton check list: online tools developed within the black sea scene project IBSS Repository
Slipetskyy, D.; Sergeyeva, O.; Gorbunov, V.; Vladymyrov, V.; Tezcan, D.; Myroshnychenko, V.; Gucu, A..
Several specific data and information management tools were developed within the EC Black Sea SCENE project for the Black Sea region. They are: (1) Black Sea Mnemiopsis database, (2) Black Sea Phytoplankton checklist, and (3) Black Sea Zooplankton checklist. The tools work on the Web and have simple user friendly interfaces. They will help to the Black Sea scientists to make their work with biological data more effective and productive. The tools are now being tested by the project participants and populated with the corresponding data and information.
Tipo: Proceedings Paper Palavras-chave: Black Sea; Species checklist; Mnemiopsis leidyi; Plankton; Database.
Ano: 2008 URL: http://repository.ibss.org.ua/dspace/handle/99011/695
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Black Sea vertical circulation and extremes of the hydrochemical and hydrooptical parameters ArchiMer
Bulgakov, Sn; Kushnir, Vm; Martinez, A.
A statistical evaluation of vertical current velocity profiles w(z) has been undertaken using data provided by current meter profilers. The calculation of profiles w(z) involves the estimation of the standard deviation of vertical current at each depth level, and the standard deviation of the statistical variability of that estimate. Profiles w(z) have been computed for the northwestern Black Sea, using current meter and CTD data from three surveys carried out during 1992-1994. The calculations show w(z) to have a two-layered structure, with zero values occurring in the main pycnocline. Such vertical current structures are consistent with a hydrodynamic model, whereby the current field is induced by buoyancy fluxes through the lateral basin boundaries....
Tipo: Text Palavras-chave: Mer Noire; Circulation verticale; Chimie marine; Optique marine; Black Sea; Vertical circulation; Hydrochemistry; Hydrooptics.
Ano: 1999 URL: http://archimer.ifremer.fr/doc/00325/43602/43921.pdf
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Ciliophora в сероводородной зонеЧёрного моря. IBSS Repository
Сергеева, Н. Г.; Заика, В. Е..
Приведены предварительные сведения о первых находках Ciliophora на глубоководном дне (глубины 120 – 240, 832, 1807 и 2075 м) Чёрного моря. Пробы взяты современными пробоотборниками 24 февраля – 10 марта 2007 г. в северо-западной и северо-восточной частях Черного моря во время рейса M72/2 MICROHAB на НИС «Метеор» (Германия). Инфузории встречены в пробах придонной воды, среди детрита и в верхнем слое осадка (0 – 1 см) во всём диапазоне исследованных глубин. Среди Ciliophora отмечены как свободноподвижные, так и прикреплённые формы, общее разнообразие – не менее 30 видов (морфотипов), размеры особей от 80 – 100 до 230 – 800 мкм. В каждой пробе найдено от 1 – 16 до 223 экз. инфузорий. Наиболее велика общая численность (156 – 223 экз. в пробе) инфузорий на...
Tipo: Journal Contribution Palavras-chave: Ciliophora; Сероводородная зона; Чёрное море; Hydrogen sulphide zone; Presence of Ciliophora; Black Sea; Чорне море; Сірчановоднева зона.
Ano: 2008 URL: http://repository.ibss.org.ua/dspace/handle/99011/801
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Cs-137 baseline levels in the Mediterranean and Black Sea: A cross-basin survey of the CIESM Mediterranean Mussel Watch programme ArchiMer
Thebault, Herve; Baena, A; Andral, Bruno; Barisic, D; Albaladejo, J; Bologa, A; Boudjenoun, R; Delfanti, R; Egorov, V; Khoukhi, T; Florou, H; Kniewald, G; Noureddine, A; Patrascu, V; Pham, M; Scarpato, A; Stokozov, N; Topcuoglu, S; Warnau, M.
The common mussel Mytilus galloprovincialis was selected as unique biomonitor species to implement a regional monitoring programme, the CIESM Mediterranean Mussel Watch (MMW), in the Mediterranean and Black Seas. As of today, and upon standardization of the methodological approach, the MMW Network has been able to quantify Cs-137 levels in mussels from 60 coastal stations and to produce the first distribution map of this artificial radionuclide at the scale of the entire Mediterranean and Black Seas. While: measured Cs-137 levels were found to be very low (usually <1 Bq kg(-1) wet wt) Cs-137 activity concentrations in the Black Sea and North Aegean Sea were up to two orders of magnitude higher than those in the western Mediterranean Basin. Such effects,...
Tipo: Text Palavras-chave: Black Sea; Mediterranean; Mussel watch; Monitoring; Radionuclides; Bivalves.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-4477.pdf
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Difference of mercury bioaccumulation in red mullets from the north-western Mediterranean and Black seas ArchiMer
Harmelin-vivien, M.; Cossa, Daniel; Crochet, Sylvette; Banaru, D.; Letourneur, Y.; Mellon-duval, Capucine.
The relationships between total mercury (Hg) concentration and stable nitrogen isotope ratio (delta N-15) were evaluated in Mullus barbatus barbatus and M. surmuletus from the Mediterranean Sea and M. barbatus ponticus from the Black Sea. Mercury concentration in fish muscle was six times higher in the two Mediterranean species than in the Black Sea one for similar sized animals. A positive correlation between Hg concentration and delta N-15 occurred in all species. Increase in Hg concentration with delta N-15 was high and similar in the two Mediterranean fishes and much lower in the Black Sea species. Since this was neither related to trophic level difference between species nor to methylmercury (MeHg) concentration differences between the north-western...
Tipo: Text Palavras-chave: Black Sea; Mediterranean; Mullidae; Methylmercury; Trophic level; N 15.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-6647.pdf
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Environmental and Management Constraints on Tourism in Varna Bay, Bulgarian Black Sea Coast Ecology and Society
Moncheva, Snejana; IO-BAS; snejanam@abv.bg; Racheva, Eleonora; IO-BAS; ainsteim@abv.bg; Kamburska, Lyudmila; EC DG-JRC, Institute for Environment and Sustainability; lyudmila.kamburska@jrc.it.
We used the systems approach framework (SAF) to study the conflict between the development of tourism and marine environmental quality in Varna Bay, a critical regional policy issue selected for study after stakeholder consultation. Water quality is of central importance to the tourism industry, as a minimum level of water clarity is required to make the water attractive for swimming and bathing. Rampant development of coastal resorts in Varna Bay has led to water-quality deterioration because the tourism capacity has expanded without concurrent increases in the capacity to collect and treat sewage. We used a numerical model to simulate the Secchi depth (as a proxy for transparency) as a function of the nitrogen loading and total suspended solids. The SAF...
Tipo: Peer-Reviewed Reports Palavras-chave: Black Sea; Coastal tourism; Eutrophication; Simulation models; Systems approach.
Ano: 2012
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Equi-dosimetry of deleterious factors at the level of populations and communities of aquatic organisms IBSS Repository
Polikarpov, G. G.; Zaitsev, Yu. P.; Fuma, S..
A principally new ecological tool is proposed for comparing equivalent effects of very different factors at the levels of populations and communities as the new approach - equi-dosimetry of effects by radiations (ionizing and ultra-violet), acidification and metals as well as any other deleterious impacts.
Tipo: Journal Contribution Palavras-chave: Radiochemoecology; Equi-dosimetry; Nuclear and non-nuclear pollutions/factors; Microcosm; Daphnia; Aquatic populations and communities; Environmental critical zones; Major interphasic marine ecosystems; Black Sea; Радиохемоэкология; Эквидозиметрия; Ядерные и неядерные загрязнения/факторы; Микрокосм; Daphnia; Водные популяции и сообщества; Экологические критические зоны; Важнейшие контурные морские экосистемы; Черное море Microcosms.
Ano: 2004 URL: http://repository.ibss.org.ua/dspace/handle/99011/51
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Estimation of 90Sr and 137Cs transfer from the Black Sea to the Mediterranean Basin after the Chernobyl NPP accident IBSS Repository
Egorov, V. N.; Polikarpov, G. G.; Stokozov, N. A.; Mirzoyeva, N. Yu..
The 90Sr and 137Cs inputs from the Black Sea to the Mediterranean Basin through the Bosporus Strait after the Chernobyl NPP accident were estimated. It is obtained that the 90Sr and 137Cs fluxes from the Black Sea to the Sea of Marmara are decreased with an effective exponential half-lives (T05) 9.5 years and 6.4 years, respectively. The estimations have shown that 110 TBq 90Sr and 250 TBq 137Cs in 1986-2000 was delivered from the Black Sea to the Mediterranean Basin after the Chernobyl NPP accident. The radioactive pollution of the Mediterranean Basin will continue for 5 half-lives, i.e. 47 years for 90Sr and 32 years for 137Cs. The total 90Sr and l37Cs inputs from the Black Sea into the Mediterranean Basin have been assessed as 168 TBq and 311 TBq,...
Tipo: Journal Contribution Palavras-chave: Сhernobyl NPP accident; 90Sr and 137Cs fluxes; Prediction; The Bosporus currents; Black Sea; Mediterranean Basin; Авария на Чернобыльской АЭС; Потоки 90Sr и 137Cs; Прогноз; Босфорское течение; Черное море; Средиземноморский бассейн Prediction Prediction http://aims.fao.org/aos/agrovoc/c_29367.
Ano: 2005 URL: http://repository.ibss.org.ua/dspace/handle/99011/243
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Gas migration pathways and slope failures in the Danube Fan, Black Sea ArchiMer
Hillman, Jess I. T.; Klaucke, Ingo; Bialas, Joerg; Feldman, Howard; Drexler, Tina; Awwiller, David; Atgin, Orhan; Cifci, Gunay; Badhani, Shray.
A large geophysical dataset, including bathymetry, and 2D and 3D P-cable seismic data, revealed evidence of numerous gas flares near the S2 Canyon in the Danube Fan, northwestern Black Sea. This dataset allows us to investigate potential relationships between gas migration pathways, gas vents observed at the seafloor and submarine slope failures. Vertical gas migration structures as revealed in the seismics appear to be concentrated near submarine slope failure structures. Where these seismically defined features extend upwards to the seafloor, they correlate with the location of gas flares. However, not all these structures reach the seafloor, in some cases because they are capped by overlying sediments. A strong correlation is inferred between gas...
Tipo: Text Palavras-chave: Gas migration; Chimneys; Gas hydrate; Danube Fan; Slope failure; Black Sea.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00439/55013/57803.pdf
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Glacial hydrologic conditions in the Black Sea reconstructed using geochemical pore water profiles ArchiMer
Soulet, Guillaume; Delaygue, G.; Vallet-coulomb, C.; Boettcher, M. E.; Sonzogni, C.; Lericolais, Gilles; Bard, E..
Chloride and delta O-18 compositions of interstitial water extracted from a long sediment core retrieved from the NW coast of the Black Sea allowed us to constrain the main hydrologic changes of the Back Sea during the Late Pleistocene and Holocene. Prior to its reconnection with the Mediterranean Sea (through the Marmara Sea) at approximately 9000 calendar yr before present (9 ka cal BP), the Black Sea has evolved as a fresh to brackish water lake. At the time of reconnection, hydrologic changes were drastic. Bottom water salinities changed from a few psu (practical salinity unit) to similar to 22 psu. Since solutes in the interstitial water column within sediments are advected and diffused the measured concentrations do not reflect those of past bottom...
Tipo: Text Palavras-chave: Black Sea; Interstitial water; Salinity; Water isotopes; Advection/diffusion modelling; Deglaciation.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00011/12239/9798.pdf
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High frequency sea level fluctuations recorded in the Black Sea since the LGM ArchiMer
Lericolais, Gilles; Bulois, C.; Gillet, Herve; Guichard, F..
This paper presents a 3D geometric interpretation of very high resolution seismic Chirp profiles acquired on the Romanian shelf during ASSEMBLAGE European Project. The results provide a solid record of the Black Sea Last Glacial Maximum (LGM) water level fluctuations. This pseudo-3D seismic interpretation shows that the Black Sea lacustrine shelf deposits form a significant basinward-prograding wedge system. on top of these prograding sequences is a set of sand dunes that delineates a wave cut-terrace like feature around the isobath -100 m. Landward of this dune field are small depressions containing barkhan-like bodies. The upper part of the last prograding sequence is incised by anastomosed channels which end in the Danube (Viteaz) canyon which are also...
Tipo: Text Palavras-chave: Black Sea; Enclosed basin; Forced regression; Rapid transgression; Sea level changes.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-6587.pdf
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