Cristian Trifanov

• Doctor of Philosophy
• Researcher at Danube Delta National Institute for Research and Development

The research is carried out within the project 'Development of the Monitoring Station for Migratory Fish: Sturgeons and Pontic Salmon – Isaccea.' The project focuses on monitoring migratory fish populations in the D.D.B.R., including sturgeons and Pontic shad, to assess their current status and implement actions to ensure their favorable conservati...

bstract: A research program was conducted over a four-year period to assess the ecological status of aquatic ecosystems in the Danube Delta Biosphere Reserve. The study involved three seasonal expeditions each year, focusing on hydrological, physico-chemical, and biological measurements. The goal was to understand the long-term interactions between...

Addressing complex interactions within water, energy, and food (WEF) resources, innovative tools for in-depth analysis and decision-making are imperative. This study introduces chorematic focus maps (CFMs) as a groundbreaking method to visualize and tackle the WEF nexus’s complexities, focusing specifically on the Danube Delta Biosphere Reserve (DD...

Managing Water, Energy, and Food (WEF) resources within socio‐environmental systems demands innovative strategies that provide decision‐makers with actionable insights. This article explores the challenges and potential solutions of employing Focus Maps and choremes as a novel approach for assessing anthropogenic impacts and enhancing the visualiza...

Regarding natural vegetation resources like medicinal herbs, plant species vital to beekeeping, meadows, and reed, the Danube Delta Biosphere Reserve land has a lot of potential. Only resources having an estimated potential for harvesting will be the subject of this article. The manager of this place has a difficult time making wise choices and pre...

A map of the Danube Delta's Natura 2000 habitat distribution is shown on the poster. The data were gathered as part of the "Revision of the Management Plan of the Danube Delta Biosphere Reserve." Moreover, the percentages for each habitat are shown. The information is based on recent field observations (from 2016–2022) and drone (30, 50, and 100 m)...

the southeastern part of the country, in the territory of the Danube Delta Biosphere Reserve and its surroundings, especially over the lacunar complex. The first two flocks (with a total of 116 birds) appeared in May but the numbers increased gathering adults, immatures and juveniles. The highest number of flamingos recorded was 265, but the flock...

The Chilia branch is the north branch of the Danube River at the Romania-Ukraine border in the Danube Delta; it is a complex system with economic and ecological values. The surface water quality is a major concern and monitoring programs have been developed at the national and international level. The objective of this study was to evaluate the wat...

In this paper a class consisting of 8 environmental toxicants were selected to assess Danube River water quality between Calarasi-Silistra sector until the river flow into the Black Sea, the Romanian Monitox Network Area. A comprehnsive comparison between 2 years of investigations in terms of nutrients contribution, such as different forms of nitro...

bstract: Drained in the past to be used as an agricultural polder, the Zaghen area has recently undergone quite a lot of ecological restoration work, meant to become attractive area for the locals and a natural refuge for the wetland species that were once found here. Our observations argue to the current trend of species as well as the care measur...

bstract: The meanders of the Sf. Gheorghe arm of the Danube Delta Biosphere Reserve in Romania were cut through a hydrotechnical intervention in the late 80s and beginning of 90s. This river regulation was nominated in the investment plan of the National Water Council and was part of the framework scheme for the Dobrogea hydrographic area. This par...

In order to quantify the NO, NO2 and NOX, SO2, CO and PM emissions from ship traffic on the Danube, seasonal measurements (autumn, spring and summer) were performed during the period 2017-2018, using high precision mobile equipment. It is the first-time air quality monitoring actions and activities of this type have been carried out on inland water...

Designated in 1990 as Biosphere Reserve under UNESCO’s MAB program and Wetland of International Importance under the RAMSAR Convention in 1991, Danube Delta is the largest best preserved of Europe’s deltas. Despite that, its ecosystems are affected by upstream conditions, the Romanian Danube being the end carrier of all wastewater discharges from u...

The floodplain of the Lower Danube was formed by the complex action of erosion and river accumulation, under the influence of the ascension trend of the river riverbed during the Holocene and the oscillation of the water levels and discharges. Almost full embankment and the construction of non-submersible dams have affected both the hydro-geomorpho...

Advanced sensing technologies, combined with wireless sensor networks, have already demonstrated their value in monitoring urban water systems, where management is rather centralized within water utility organizations. Environmental water resources, characterized by more diverse stakeholders and overlapping management responsibilities of different...

The hydrotechnical works on Sf. Gheorghe arm in Danube Delta was done by Institute for Research and Planning for Water Management. The work was part of the framework scheme for the Dobrogea hydrographic area and was nominated in the investment plan of the National Water Council. The regularization works, started in 1988, consists in the rectificati...

Abstract: In the last two decades of colonial water birds in the Danube Delta Biosphere Reserve has been the subject of numerous studies and researches. The purpose of this paper is to present the use of UAV technology for updating assessment data of DDBR bird colony, carried out for both: available colonies or unique inventory within established s...

Lake Erenciuc is situated in the Danube Delta (Romania) and was created in the abandoned riverbed of the Sfântu Gheorghe arm. It is the largest meander lake in Romania. During spring–summer, the physico-chemical parameters of water have been measured in seven lake sampling points and one at the Sfântu Gheorghe branch, which supplies the lake throug...

The Danube Delta colony of the Great White Pelican (Pelecanus onocrotalus) was evaluated in 2016 at 17,000 pairs, with a minimum of 15,000 and a maximum of 19,000 pairs. We used unmanned aerial vehicle (UAV) technology to count the number of nesting birds in the colony. The UAV-derived counts in 2016 show a 4 times higher number of pairs than the m...

Fragmentation analysis of a coastal biosphere reserve is an important step in the decision management system, as it identifies vulnerable areas in terms of human pressure. For a better understanding of the anthropisation degree, three coastal sites were chosen within the Danube Delta Biosphere Reserve (D.D.B.R.), from north (Sulina) to south (Porti...

bstract: The Danube Delta colony of the Great White Pelican (Pelecanus onocrotalus) was evaluated in 2016 at 17,000 pairs, with a minimum of 15,000 and a maximum of 19,000 pairs. We used unmanned aerial vehicle (UAV) technology to count the number of nesting birds in the colony. The UAV-derived counts in 2016 show a 4 times higher number of pairs t...

Floods are natural processes. Urbanization and increasing population density as well as a concentration of economic values in flood prone areas have increased the risk in many regions. Perception of the flood hazard and the associated risks in many cases is low, if not inexistent, particularly in such areas considered to be safe, e.g. behind dams o...

bstract. On the coastal areas, the pressure of touristic development upon natural areas is increasing and interfering with main purposes of Natura 2000 sites designation. Therefore the habitats tendency, adequate for species development, is in regression as far as areas size and homogeneity are concerned. In this respect, a case study is presented...

bstract: Efficient use of natural resources especially in Natura 2000 sites is an essential component of Europe 2020 strategy. The use of web database is absolutely necessary for a good resource management and it will provide a good communication channel for the main stakeholders: protected area manager, scientists, resources evaluators and local c...

Lucrarea "GHID METODOLOGIC de monitorizare a factorilor hidromorfologici, chimici și biologici pentru apele de suprafață din Rezervația Biosferei Delta Dunării" prezintă o abordare interdisciplinară a metodologiei de caracterizare a stării ecologice, cu exemple din practica și experiența specialiștilor din cadrul Institutului Nțional de Cercetare D...

The Danube Delta is the second largest delta in Europe after Kuban Delta. It is part of the Danube Delta Biosphere Reserve together with Razim Lagunar Complex and the Danube floodplain upstream the delta. It is located in the South-Eastern part of the Romanian territory. Its main components (as area extent and importance) are various water bodies....

Cumulative River Dynamic Assessment using Topo-Hydrographical High Definition Surveying in the Danube River area - Km 347-Km344 Iulian NICHERSU, Cristian TRIFANOV, Marian MIERLA The purpose of this paper is to depict and illustrate the benefits of Topo-Hydrographical High Definition Surveying (THHDS), also known as 3D multi-beam scanning, on a topo...

The Sketch Match approach for Sulina pilot case was carried out in the frame of the project "People for Ecosystem Based Governance in Assessing Sustainable Development of Ocean and Coast" - PEGASO, funded by the Seventh Framework Programme. The PEGASO project has been designed to identify common threats and solutions in relation to the long-term su...

The purpose of this paper is to present the results of modeling the spatial planning system in the context of implementation the Protocol for Integrated Coastal Zone Management (ICZM) in the area of Sulina, on the Romanian coastal zone of Black Sea. Spatial Planning system in coastal zone is complex and composed by a big number of factors (identifi...

High definition morphometric data acquired with a multibeam sonar is used to develop studies of past and future riverbed and shores dynamics on the Lower Danube at two bifurcations, one upstream from Tulcea city (Ceatal Ismail) and one downstream from Tulcea City (Ceatal Sf. Gheorghe). These studies help in understanding the tendency of the evoluti...

The Sketch Match approach for Giurgiu pilot case was carried out in the frame of the project "Beneficiaries and flood risk assessment in Danube Floodplain"-DANUBEFLOODRISK, funded by the South East Europe Transnational Cooperation Programme. This project follows the European Flood Risk Directive which stipulates the reduction and management of floo...