Lake Razelm or Lake Razim (Romanian: Limanul Razim, Limanul Razelm) is the name of a large freshwater lagoon on the shores of the Black Sea in Romania, south of the Danube Delta and part of its World Heritage Site. It is the largest liman in Romania.[1]
| Lake Razelm | |
|---|---|
 | |
  Lake Razelm Location in Romania | |
| Coordinates | 44°49′36″N 28°59′05″E / 44.82667°N 28.98472°E |
| Primary outflows | Lake Golovița |
| Basin countries | Romania |
| Max. length | 28.5 km (17.7 mi) |
| Max. width | 15 km (9.3 mi) |
| Surface area | 511 km2 (197 sq mi) |
| Residence time | 300-600 days |
| Islands | Popina Island |
| Settlements | Sarichioi |
The name is also sometimes applied to the complex it forms with several other limans and lagoons. This complex can be separated into two subgroups. The northern subgroup contains freshwater Razelm and Lake Golovița, which are connected by a channel 3.1 km (1.9 mi) wide, whereas the southern group is made up of salt lakes. All these lakes cover an area of about 1,000 km2 (390 sq mi), of which 400 km2 (150 sq mi) is the area of Lake Razelm alone.
Ecology
editWhen the Razelm/Golovița system was closed off from the sea in the late 1970s, this resulted in several changes to the ecological conditions of the system, including a decrease in salinity to almost zero, an increase in refreshment time to over a year, and episodes of eutrophication.[2] Despite this environmental degradation, the system remains an important habitat. Three families of cockles could be found in Romania in the 1960s, and the two that remain are found only in Razelm (albeit at reduced densities).[3] Popina Island at the north end of the lake is an important refuge for many bird species and invertebrates. The recent ecological study suggests that the Razim-Sinoie lagoon system is close to the good ecological status according to the requirements of the Water Framework Directive.[4]
References
edit- ^ "Geography, Meteorology, and Environment". Romanian Statistical Yearbook (PDF). 2008. Archived (PDF) from the original on 2007-09-27. Retrieved 2022-06-13.
- ^ Dinu, Irina; Umgiesser, Georg; Bajo, Marco; de Pascalis, Francesca; Stănică, Adrian; Pop, Cornel; Dimitriu, Radu; Nichersu, Iulian; Constantinescu, Adrian (2015). "Modelling of the response of the Razelm-Sinoe lagoon system to physical forcing". Geo-Eco-Marina. 21. doi:10.5281/zenodo.45064. Archived from the original on 25 February 2017. Retrieved 24 February 2017.
- ^ Popa, Oana P.; et al. (2009). "Contributions to the knowledge of the present Limnocardiidae fauna (Mollusca: bivalvia) from Romania". The Journal of "Grigore Antipa" National Museum of Natural History. 52: 7–15.
- ^ Catianis, Irina; Secrieru, Dan; Pojar, Iulian; Grosu, Dumitru; Scrieciu, Albert; Pavel, Ana Bianca; Vasiliu, Dan (2018-03-13). "Water Quality, Sediment Characteristics and Benthic Status of the Razim-Sinoie Lagoon System, Romania". Open Geosciences. 10 (1): 12–33. Bibcode:2018OGeo...10....2C. doi:10.1515/geo-2018-0002. S2CID 134806237.
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