Nemunas Delta is the
Lithuanian name for the
Neman (Nemunas) River Delta
Delta commonly refers to:
* Delta (letter) (Δ or δ), a letter of the Greek alphabet
* River delta, at a river mouth
* D (NATO phonetic alphabet: "Delta")
* Delta Air Lines, US
* Delta variant of SARS-CoV-2 that causes COVID-19
Delta may also r ...
, in
Lithuania. Prior to post-World War II border changes, it was known in German as the ''Memel Niederung'', as the Neman was for centuries called the Memel in German.
When it reaches the
Baltic Sea
The Baltic Sea is an arm of the Atlantic Ocean that is enclosed by Denmark, Estonia, Finland, Germany, Latvia, Lithuania, Poland, Russia, Sweden and the North and Central European Plain.
The sea stretches from 53°N to 66°N latitude and fr ...
, the Neman splits into a maze of river branches and canals, forming
polder
A polder () is a low-lying tract of land that forms an artificial hydrological entity, enclosed by embankments known as dikes. The three types of polder are:
# Land reclaimed from a body of water, such as a lake or the seabed
# Flood plain ...
s and
wetlands
A wetland is a distinct ecosystem that is flooded or saturated by water, either permanently (for years or decades) or seasonally (for weeks or months). Flooding results in oxygen-free ( anoxic) processes prevailing, especially in the soils. The ...
that make it a very attractive destination for
eco-tourism
Ecotourism is a form of tourism involving responsible travel (using sustainable transport) to natural areas, conserving the environment, and improving the well-being of the local people. Its purpose may be to educate the traveler, to provide fund ...
. The four main
distributaries
A distributary, or a distributary channel, is a stream that branches off and flows away from a main stream channel. Distributaries are a common feature of river deltas. The phenomenon is known as river bifurcation. The opposite of a distributary ...
are Atmata, Pakalnė, Skirvytė and Gilija. In the centre of the delta lies
Lithuania's largest island,
Rusnė Island
Rusnė Island is an island in Nemunas Delta, Šilutė District Municipality, Lithuania. It is located between Atmata and Skirvytė, distributaries of the Neman River, and the Curonian Lagoon. At 45 or 46 square kilometers, Rusnė is often conside ...
(5 km²), and its eponymous village. Although it is the largest human settlement in the delta, its population is only about 2,500.
Delta
The Nemunas Delta
wetlands
A wetland is a distinct ecosystem that is flooded or saturated by water, either permanently (for years or decades) or seasonally (for weeks or months). Flooding results in oxygen-free ( anoxic) processes prevailing, especially in the soils. The ...
are considered globally significant and are protected under the
Ramsar Convention
The Ramsar Convention on Wetlands of International Importance Especially as Waterfowl Habitat is an international treaty for the conservation and sustainable use of Ramsar site, Ramsar sites (wetlands). It is also known as the Convention on W ...
. To safeguard the delta's wildlife and facilitate research, the Nemunas Delta Regional Park was created in 1992. It covers 239.5 km² and consists of 14
reserves and one
water reservoir
A reservoir (; from French ''réservoir'' ) is an enlarged lake behind a dam. Such a dam may be either artificial, built to store fresh water or it may be a natural formation.
Reservoirs can be created in a number of ways, including control ...
. About 20% of the area is covered by water. Since 1999, the Lithuanian Society of Ornithologists
The Lithuanian Society of Ornithologists
/ref> and the Nemunas Delta Regional Park Administration have been organizing bird counts
There are many field methods available for conducting avian ecological research. They can be divided into three types: counts, nest monitoring, and capturing and marking.
Basic counts
Basic bird counts are a good way to estimate population siz ...
every October. The rally is an open, international, and non-professional attempt to tally as many bird species as possible. Bird counts assist in identifying environmental threats to the well-being of birds or, conversely, in assessing the outcomes of environmental management initiatives intended to ensure the survival of at-risk species or encourage the breeding of species for aesthetic or ecological reasons. The delta undergoes annual flooding, but the greatest threats to its integrity are posed by pollution, agriculture, the fishing industry, and tourism.
The delta hosts many rare varieties of birds during the spring breeding season (the total reported number of species is about 200; about 40 species are listed in the Lithuanian Red Book of Endangered Species
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biolog ...
). It is also the most important layover for migrating birds in Lithuania. Millions of birds and hundreds of species travel through this area each year, including some internationally endangered species: the white-tailed eagle
The white-tailed eagle (''Haliaeetus albicilla'') is a very large species of sea eagle widely distributed across temperate Eurasia. Like all eagles, it is a member of the family Accipitridae (or accipitrids) which includes other diurnal rapto ...
, the barnacle goose
The barnacle goose (''Branta leucopsis'') is a species of goose that belongs to the genus ''Branta'' of black geese, which contains species with largely black plumage, distinguishing them from the grey ''Anser'' species. Despite its superficial s ...
, crane
Crane or cranes may refer to:
Common meanings
* Crane (bird), a large, long-necked bird
* Crane (machine), industrial machinery for lifting
** Crane (rail), a crane suited for use on railroads
People and fictional characters
* Crane (surname) ...
s, dunlin
The dunlin (''Calidris alpina'') is a small wader, formerly sometimes separated with the other "stints" in the genus ''Erolia''. The English name is a dialect form of "dunling", first recorded in 1531–1532. It derives from ''dun'', "dull brown ...
s and aquatic warbler
The aquatic warbler (''Acrocephalus paludicola'') is an Old World warbler in the genus '' Acrocephalus''. It breeds in temperate eastern Europe and western Asia, with an estimated population of 11,000-15,000 pairs. It is migratory, wintering ...
s. The principal research facilities are located in Ventė Cape ( lt, Ventės ragas, sometimes referred to as the Ventė Peninsula). One of the first bird ringing
Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight ...
stations in Europe
Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a subcontinent of Eurasia and it is located enti ...
was opened there in 1929 by a Lithuanian zoologist
Zoology ()The pronunciation of zoology as is usually regarded as nonstandard, though it is not uncommon. is the branch of biology that studies the animal kingdom, including the structure, embryology, evolution, classification, habits, and ...
, Tadas Ivanauskas
Tadas Ivanauskas (December 16, 1882 – June 1, 1970) was a Lithuanian zoologist and biologist, and one of the founders of Vytautas Magnus University.
Biography
He was born in Lebiodka Manor (today in Belarus) as a third child of Leonard Iwanow ...
. Birds ringed at the Cape have been found migrating to Iran
Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkm ...
, Egypt
Egypt ( ar, مصر , ), officially the Arab Republic of Egypt, is a transcontinental country spanning the northeast corner of Africa and southwest corner of Asia via a land bridge formed by the Sinai Peninsula. It is bordered by the Med ...
and even to the Republic of South Africa.
Mammals
Mammals () are a group of vertebrate animals constituting the class Mammalia (), characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fu ...
found in the delta include fox
Foxes are small to medium-sized, omnivorous mammals belonging to several genera of the family Canidae. They have a flattened skull, upright, triangular ears, a pointed, slightly upturned snout, and a long bushy tail (or ''brush'').
Twelv ...
, beaver
Beavers are large, semiaquatic rodents in the genus ''Castor'' native to the temperate Northern Hemisphere. There are two extant species: the North American beaver (''Castor canadensis'') and the Eurasian beaver (''C. fiber''). Beavers a ...
, elk
The elk (''Cervus canadensis''), also known as the wapiti, is one of the largest species within the deer family, Cervidae, and one of the largest terrestrial mammals in its native range of North America and Central and East Asia. The com ...
, wild boar
The wild boar (''Sus scrofa''), also known as the wild swine, common wild pig, Eurasian wild pig, or simply wild pig, is a suid native to much of Eurasia and North Africa, and has been introduced to the Americas and Oceania. The species is ...
and otter.
Another of the delta's special features is Lake Krokų Lanka (near where the Nemunas debouches), which formed when the river's outwash separated it from the Curonian Lagoon
The Curonian Lagoon (or Bay, Gulf; russian: Куршский залив, lt, Kuršių marios, pl, Zalew Kuroński, german: Kurisches Haff, lv, Kuršu joma) is a freshwater lagoon separated from the Baltic Sea by the Curonian Spit. Its surf ...
. It is the largest lake in the delta region, covering 7.93 km², and the only lake of marine origin in Lithuania.
Kursenieki
While today the Kursenieki
The Kursenieki ( lv, kursenieki, kāpenieki, german: Kuren – 'Curonians'; lt, kuršiai; pl, Kuronowie pruscy – 'Prussian Curonians') are a nearly extinct Baltic ethnic group living along the Curonian Spit. "Kuršiai" refers only to inhab ...
, also known as Kuršininkai are a nearly extinct Baltic
Baltic may refer to:
Peoples and languages
*Baltic languages, a subfamily of Indo-European languages, including Lithuanian, Latvian and extinct Old Prussian
*Balts (or Baltic peoples), ethnic groups speaking the Baltic languages and/or originatin ...
ethnic group living along the Curonian Spit
The Curonian (Courish) Spit ( lt, Kuršių nerija; russian: Ку́ршская коса́ (Kurshskaya kosa); german: Kurische Nehrung, ; lv, Kuršu kāpas) is a long, thin, curved sand-dune spit that separates the Curonian Lagoon from the Balt ...
, in 1649 Kuršininkai settlement spanned from Memel (Klaipėda) to Danzig (Gdańsk). The Kuršininkai were eventually assimilated by the Germans
, native_name_lang = de
, region1 =
, pop1 = 72,650,269
, region2 =
, pop2 = 534,000
, region3 =
, pop3 = 157,000
3,322,405
, region4 =
, pop4 = ...
, except along the Curonian Spit where some still live. The Kuršininkai were considered Latvians
Latvians ( lv, latvieši) are a Baltic ethnic group and nation native to Latvia and the immediate geographical region, the Baltics. They are occasionally also referred to as Letts, especially in older bibliography. Latvians share a common La ...
until after World War I
World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was List of wars and anthropogenic disasters by death toll, one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, ...
when Latvia
Latvia ( or ; lv, Latvija ; ltg, Latveja; liv, Leţmō), officially the Republic of Latvia ( lv, Latvijas Republika, links=no, ltg, Latvejas Republika, links=no, liv, Leţmō Vabāmō, links=no), is a country in the Baltic region of ...
gained independence from the Russian Empire
The Russian Empire was an empire and the final period of the List of Russian monarchs, Russian monarchy from 1721 to 1917, ruling across large parts of Eurasia. It succeeded the Tsardom of Russia following the Treaty of Nystad, which ended th ...
, a consideration based on linguistic arguments. This was the rationale for Latvian claims over the Curonian Spit, Memel, and other territories of East Prussia
East Prussia ; german: Ostpreißen, label= Low Prussian; pl, Prusy Wschodnie; lt, Rytų Prūsija was a province of the Kingdom of Prussia from 1773 to 1829 and again from 1878 (with the Kingdom itself being part of the German Empire from 1 ...
which would be later dropped.
Maps
Map of Nemunas Delta Regional Park
Map of Nemunas Delta
* Nemunas Delta is at coordinates
References
External links
Implications of Accelerated Sea-Level Rise (ASLR) for Lithuania
*[https://web.archive.org/web/20070701165523/http://europeandcis.undp.org/WaterWiki/index.php/Lithuania_-_Sustainable_Development_of_the_Nemunas_Delta_Supported_by_the_Community_of_Minge_Village Sustainable Development of the Nemunas Delta]
EECONET Action Fund (EAF) activities in the Nemunas Delta
{{Authority control
Delta
Delta commonly refers to:
* Delta (letter) (Δ or δ), a letter of the Greek alphabet
* River delta, at a river mouth
* D (NATO phonetic alphabet: "Delta")
* Delta Air Lines, US
* Delta variant of SARS-CoV-2 that causes COVID-19
Delta may also r ...
Ramsar sites in Lithuania
River deltas of Europe
Polders
Parks in Lithuania
Ornithological citizen science