A5042623704- Marine and environmental studies
- Marine and fisheries research
- Marine Biology and Ecology Research
- Marine Ecology and Invasive Species
- Microbial Community Ecology and Physiology
- Marine and coastal ecosystems
- Coastal and Marine Management
- Identification and Quantification in Food
- Environmental DNA in Biodiversity Studies
- Fish Biology and Ecology Studies
- Big Data and Business Intelligence
- Marine Bivalve and Aquaculture Studies
- Marine Invertebrate Physiology and Ecology
- Species Distribution and Climate Change
- Environmental and Biological Research in Conflict Zones
- Microplastics and Plastic Pollution
- Aquatic and Environmental Studies
- International Maritime Law Issues
- Coral and Marine Ecosystems Studies
- Big Data Technologies and Applications
- Methane Hydrates and Related Phenomena
- Genetic diversity and population structure
- Geochemistry and Geologic Mapping
- Arctic and Russian Policy Studies
- Advanced X-ray and CT Imaging
Bulgarian Academy of Sciences
2009-2024
Institute of Oceanology
2013-2024
Plovdiv University
2022
National Academy of Sciences of Ukraine
2015
Marine Ecology Research Institute
2014
Marine environmental monitoring has tended to focus on site-specific methods of investigation. These traditional have low spatial and temporal resolution are relatively labour intensive per unit area/time that they cover. To implement the Strategy Framework Directive (MSFD), European Member States required improve marine design networks. This can be achieved by developing testing innovative cost-effective systems, as well indicators status. Here, we present several recently developed...
Abstract Ecosystem-based management (EBM) is promoted as the solution for sustainable use. An ecosystem-wide assessment methodology therefore required. In this paper, we present an approach to assess risk ecosystem components from human activities common marine and coastal ecosystems. We build on: (i) a linkage framework that describes how can impact through pressures, (ii) qualitative expert judgement of chains describing exposure sensitivity ecological those activities. Using case study...
Understanding the threats to global biodiversity and ecosystem services posed by human impacts on coastal marine environments requires establishment maintenance of ecological observatories that integrate biological, physical, geological biogeochemical aspects ecosystems. This is crucial provide scientists stakeholders with support knowledge necessary quantify environmental change its impact sustainable use seas coasts. In this paper, we explore potential for components International...
Significance A central goal in invasion genomics is to identify and determine the mechanisms that underlie successful colonization, establishment, subsequent range expansion of invasive populations nonindigenous species. Using a whole-genome approach, we evaluate importance genetic diversity for establishment Our study shows per se not major factor driving invasions, since observed all possible scenarios with showing reduced, similar but also increased, relative native population. coalescent...
Abstract Background Recent studies have reported the identity and functions of key anaerobes involved in degradation organic matter (OM) deep (> 1000 m) sulfidic marine habitats. However, due to lack available isolates, detailed investigation their physiology has been precluded. In this study, we cultivated characterized ecophysiology a wide range novel potentially OM (2000 m depth) waters Black Sea. Results We successfully diverse group belonging various phyla, including Fusobacteriota...
A new cyclopoid copepod species, Oithona davisae was discovered during regular monitoring along the western coast of Black Sea in 2009–2012. In short period since its discovery off Bulgarian Coast, O. populations have increased to become one dominant zooplankters, contributing up 63.5–70.5 % total mesozooplankton numbers Varna Bay and adjacent open sea waters. This species thrived early autumn with a maximum density 43818 ind.m -3 eutrophic Bay, but seasonal annual abundance fluctuated...
Various programs and organizations (IMO, UNEP, IOC UNESCO, FAO) recently the EU MSFD recognized marine litter (ML) as an issue of global threat from environmental, economic, human health safety, aesthetic aspect.Among efforts to combat problem adequate monitoring application harmonized methodological approaches for quantification are essential.This research presents results a pilot assessment bottom ML in Black Sea during MISIS Project Joint Cruise (22-31 August, 2013) along 3 transects NW...
Global warming is increasing the frequency and severity of marine heat waves, which poses a serious threat to ecosystem. This study analyzes seasonal interannual dynamics in abundance structure mesozooplankton community Sevastopol Bay based on bi-monthly routine observations over 2003–2014. The focus impact summer 2010 wave (MHW2010) crustaceans belonging different ecological groups. As response MHW2010, three warm-water species (O. davisae, A. tonsa P. avirostris) exhibiting maximum density...
In managing for marine biodiversity, it is worth recognising that, whilst every species contributes to each contribution not of equal importance. Some have important effects and interactions, both primary secondary, on other components in the community therefore by their presence or absence directly affect biodiversity as a whole. Keystone been defined that disproportionate effect environment relative abundance. As such, keystone might be particular relevance characterisation within...
The red mullet ( Mullus barbatus Linnaeus, 1758) is a keynote species for the Bulgarian Black Sea ecosystem and fisheries; nevertheless, existing knowledge on population status very scarce. present study was intended to assess health adaptive potential of M. populations inhabiting waters Sea. Our findings revealed that are exposed variety anthropogenic environmental stressors. species’ assessed using representative genetic, morphological, biochemical chemical biomarkers from specimens...
Intercomparison of nets commonly used for mesozooplankton sampling in the Black and Mediterranean seas was attempted within SESAME (Southern European Seas: Assessing Modelling Ecosystem Changes) project. Five were compared: three Juday equipped with 150 μm, 180 μm 200 mesh size, Nansen net (100 size) WP2 (200 size). Replicated samples collected at one station western Sea offshore waters April 2009. Collected analyzed species level (except meroplankton), stages (for copepods) size length. A...
A non-native species of the cyclopoid copepod in genus Oithona was first recorded Black Sea 2001 and initially identified as brevicornis Giesbrecht, 1891. During following years, this became widely distributed coastal then open areas later spread into adjacent Azov through Kerch Strait. Recent detailed re-examination morphological features indicated it is not O. brevicornis, but may be davisae Ferrari F.D. & Orsi, 1984 or perhaps one other similar to brevicornis. This study examined...
The present paper is aimed at: 1 - application of biotic indices to assess the ecological state Varna lagoon by investigating response biota gradient environmental pollution 2 test applicability individual body size class distribution plankton communities as innovative quality element descriptor analyzed against routine attributes. Quantitative assessments, seasonal variations and community have been analyzed.
Over the past few years, predicting species spatial distributions has been recognized as a powerful tool for studying biological invasions in conservation biology and planning, ecology, evolutionary biology. Species distribution models (SDMs) are used extensively assessing effects of changes habitat suitability, impacts climate change, realignment existing priorities. SDMs relate known patterns occurrences to specific set environmental conditions. Accordingly, we have MaxEnt SDM order...