Cernisencu Irina

Danube Delta National Institute for Research and Development (DDNIRD) · Fisheries

bstract: This paper will present the results of research conducted in 2023 in Danube Delta Biosphere Reserve regarding the mapping of the reed beds and characterizing their typologies in order to implement actions to regulate firefighting activities, based on elements of fire ecology, assessment of the sustainable exploitation of vegetal resources,...

Abstract: This paper will present the results of research conducted in 2021 in Danube Delta Biosphere Reserve regarding the mapping of DDBR habitats in the Romanian classification system, assessment of the sustainable exploitation of plant resources, conservation status of invertebrate species of community interest, assessment of the ecological sta...

The Danube Delta Biosphere Reserve (RBDD) covers a total area of 5,800 km², with the majority of the reserve consisting of the Danube Delta. The delta is formed by three main branches: 1. Chilia Branch: Measuring 111 km in length, it carries 60% of the Danube's total flow and is located in the northern part of the delta. 2. Sulina Branch: At 71 km...

Abstract: This paper will present the results of research conducted in 2020 in Danube Delta Biosphere Reserve regarding the mapping of DDBR habitats in the Romanian classification system, assessment of the sustainable exploitation of plant resources, conservation status of invertebrate species of community interest, assessment of the ecological sta...

The aim of this study was to determine the ecological status of fish fauna of Razim Lake under the conditions of the water salinity changing from brackish, almost 70 years ago, into freshwater nowadays. The natural processes of siltation and organic deposits, characteristic of Danube Delta lake complexes, intensified in the last decades and include...

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...

bstract: In the summer-autumn of 2019 (in all 6 months) fish fauna was investigated in different sites of Lower Danube River of its arms: Unique/United Danube in front of first split at Chilia Point (Ceatal), Sf. Gheorghe arm, Sulina arm, Chilia arm and few nearby networking canals. In study period was assessed the ecological status of fish fauna a...

After first records of this species in Romanian waters in 2001 (Suceava river) and then in 2006 in Danube River (km 929), anticipated the presence of species in Danube Delta (DD), which happened in 2007 by two possible ways: upper Danube River or via Moldavian rivers from Ukraine. This paper analyses a decade of the evolution of the non-native Chin...

Abstract: Danube shad is a fish with high economic and socio-cultural value for the human communities established in the Danubian-Pontic space. In Romania, shad fishery has a market value of about 1.5 million euro, with average annual catches of 200-500 tonnes. Biological material was collected during research surveys organized along the Black S...

The Black Sea and its coastal lakes are well-known from ancient times as “unicum hidrobiologicum” due to its specific features having impact on coastal area. Romanian coast is different than other areas because of being under the Danube freshwater and load influence. A variety of valuable natural resources are concentrated along the Romanian Black...

Eutrophic Taşaul Lake has been used mainly for aquaculture and fish production. The latter is strongly dependent on stocking and over-exploitation. Historical fish data show a peaking biodiversity in the 1970s, but catch records declined drastically in 1994-1995, from 180 to 50 tons, and later on to 5 tons/year, until 2000. Fish stock in Taşaul Lak...

ABSTRACT. The average commercial fish catch decreased from 1,379 tons, in Matita-Merhei complex of lakes and 787 tones in Rosu-Puiu complex of lakes (average catch of 1963-1974 period), to 307 tons, respectively 401 tons average catch of 1992 – 2004 period. In this period piscivorous species like pike, wels catfish, European perch declined and the...

NIMRD Constanta performed studies to assess the ecological state of the Sinoe Lagoon and to provide an adequate management plan for this basin. In this aim hydrochemical and biological assessment are the first important steps.Results of this study are pointing out the emergency for applying the ecological recovery measures for this unique aqua...

Artemia is the most popular organism used as live food for fish and crustaceans. The techniques most used in the world for rearing and production have been tested for the Romanian Coast conditions: • incubation and hatching of cysts harvested from natural salty lake, • production in intensive culture systems, • salty pond accommodation and producti...

The Danube Delta Biosphere Reserve includes 200000 ha inland water areas, which produce an important fish resources, the total catches use varies between 4000-8000 tons per year. The implementation of sustainable use strategy as a part of fisheries management means the knowledge of the population status and simulation of intermediate and long term...

The Razim Lake is a great part of the Danube Delta Biosphere Reserve, with a surface of 54 000 ha. In the last 10 years, the total catch varied from 1455 to 2100 tons/year, whereas pikeperch catches were 83 - 432 tons/year. Due to very high fishing intensity, the stock loses yearly 85-90 % of the mean number, the most being 2 and 3 year old. The re...

In 1959 – 1960, the first chinese fishes have been introduced in Romania for fishculture and also since 1963 in the Danube Delta ponds. The presence of grass carp in the Danube river was signalled after 1970 followed by silver carp. The presence was due to escapes from the ponds, but the possibility of natura spawning has been admitted later by som...

As a result of studies carried out in 1992 the average of absolute prolificity has been established, as follow: -for giebel carp of 4 years old and 20,3 cm body length, fished in lakes like Puiu, Matita, Trei Iezere, Lumina and Somova (Danube Delta Romania), the average absolute prolificity was 72 070 eggs number; - for roach of 4 years old (17,1 c...

The sustainable of resources represents one of the functions of a Biosphere Reserve. The fish resource is still the main resource in the Danube delta were a number of 600-700 fishermen get annual fishing licenses for this area of 200-250 thousand ha covered by water. Fish being a traditional food for delta people. Under the circumstances of environ...