The Blackwater Estuary is the
estuary
An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime environm ...
of the
River Blackwater between
Maldon
Maldon (, locally ) is a town and civil parish on the Blackwater estuary in Essex, England. It is the seat of the Maldon District and starting point of the Chelmer and Blackwater Navigation. It is known for Maldon Sea Salt which is produced ...
and
West Mersea
West Mersea is a town and electoral ward in Essex, England. It is the larger (in terms of population) of two settlements on Mersea Island, south of Colchester.
History
Roman buildings and tesselated pavements close to the quayside have led to ...
in
Essex
Essex () is a Ceremonial counties of England, county in the East of England. One of the home counties, it borders Suffolk and Cambridgeshire to the north, the North Sea to the east, Hertfordshire to the west, Kent across the estuary of the Riv ...
. It is a 5,538 hectare biological
Site of Special Scientific Interest
A Site of Special Scientific Interest (SSSI) in Great Britain or an Area of Special Scientific Interest (ASSI) in the Isle of Man and Northern Ireland is a conservation designation denoting a protected area in the United Kingdom and Isle ...
(SSSI).
An area of 4,395 hectares is also designated a
Ramsar Ramsar may refer to:
* Places so named:
** Ramsar, Mazandaran, city in Iran
** Ramsar, Rajasthan, village in India
* Eponyms of the Iranian city:
** Ramsar Convention concerning wetlands, signed in Ramsar, Iran
** Ramsar site, wetland listed i ...
Wetland of International Importance,
and a
Special Protection Area
A Special Protection Area (SPA) is a designation under the European Union Directive on the Conservation of Wild Birds. Under the Directive, Member States of the European Union (EU) have a duty to safeguard the habitats of migratory birds and certa ...
[ 1,099 hectares is a National Nature Reserve.][ Tollesbury Wick and part of ]Abbotts Hall Farm
Abbotts Hall Farm is a 282 hectare nature reserve in Great Wigborough in Essex. It is the head office of the Essex Wildlife Trust, which manages the site. It is also part of the Blackwater Estuary National Nature Reserve, Site of Special Scientif ...
, both nature reserve managed by the Essex Wildlife Trust
The Essex Wildlife Trust (EWT) is one of 46 wildlife trusts which cover the United Kingdom. The EWT was founded in 1959, and it describes itself as Essex's leading conservation charity, which aims to protect wildlife for the future and the people ...
, are in the SSSI.
Oyster
Oyster is the common name for a number of different families of salt-water bivalve molluscs that live in marine or brackish habitats. In some species, the valves are highly calcified, and many are somewhat irregular in shape. Many, but not ...
s have been harvested from the estuary for more than a thousand years and there are remains of fish weirs from the Anglo-Saxon era. At the head of the estuary is the town of Maldon
Maldon (, locally ) is a town and civil parish on the Blackwater estuary in Essex, England. It is the seat of the Maldon District and starting point of the Chelmer and Blackwater Navigation. It is known for Maldon Sea Salt which is produced ...
, which is a centre of salt production. The other major settlement is the town West Mersea
West Mersea is a town and electoral ward in Essex, England. It is the larger (in terms of population) of two settlements on Mersea Island, south of Colchester.
History
Roman buildings and tesselated pavements close to the quayside have led to ...
, of Mersea Island
Mersea Island is an island in Essex, England, in the Blackwater and Colne estuaries to the south-east of Colchester. Its name comes from the Old English word ''meresig'', meaning "island of the pool" and thus is tautological. The island is ...
, on the northern seaward side. Numerous other villages are on its banks.
Within the estuary is Northey Island
Northey Island is an island in the estuary of the River Blackwater, Essex. It is linked to the south bank of the river by a causeway, covered for two hours either side of high tide. The island is approximately 1 mile (2 km) to the eas ...
which was the location for the first experiments in the UK in 'managed retreat
Managed retreat involves the purposeful, coordinated movement of people and buildings away from risks. This may involve the movement of a person, infrastructure (e.g., building or road), or community. It can occur in response to a variety of hazar ...
', i.e. creating saltmarsh by setting sea wall
A seawall (or sea wall) is a form of coastal defense constructed where the sea, and associated coastal processes, impact directly upon the landforms of the coast. The purpose of a seawall is to protect areas of human habitation, conservation ...
s back from what are perceived to be unsustainable positions. The area is notable as a breeding area for little tern
The little tern (''Sternula albifrons'') is a seabird of the family Laridae. It was formerly placed into the genus ''Sterna'', which now is restricted to the large white terns. The genus name is a diminutive of '' Sterna'', "tern". The specific ' ...
(''Sternula albifrons'') and as a transit point for ringed plover
The common ringed plover or ringed plover (''Charadrius hiaticula'') is a small plover that breeds in Arctic Eurasia. The genus name ''Charadrius'' is a Late Latin word for a yellowish bird mentioned in the fourth-century Vulgate. It derives fr ...
(''Charadrius hiaticula'').
;Over-wintering species:
*Pied avocet
The pied avocet (''Recurvirostra avosetta'') is a large black and white wader in the avocet and stilt family, Recurvirostridae. They breed in temperate Europe and across the Palearctic to Central Asia then on to the Russian Far East. It is a ...
(''Recurvirostra avosetta'')
*Black-tailed godwit
The black-tailed godwit (''Limosa limosa'') is a large, long-legged, long-billed shorebird first described by Carl Linnaeus in 1758. It is a member of the godwit genus, ''Limosa''. There are four subspecies, all with orange head, neck and ches ...
(''Limosa limosa islandica'')
* Dark-bellied brent goose (''Branta bernicla bernicla'')
*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 brow ...
(''Calidris alpina alpina'')
*Eurasian golden plover
The European golden plover (''Pluvialis apricaria''), also known as the European golden-plover, Eurasian golden plover, or just the golden plover within Europe, is a largish plover. This species is similar to two other golden plovers: the Americ ...
(''Pluvialis apricaria'')
*Grey plover
The grey plover or black-bellied plover (''Pluvialis squatarola'') is a large plover breeding in Arctic regions. It is a long-distance migrant, with a nearly worldwide coastal distribution when not breeding.
Taxonomy
The grey plover was forma ...
(''Pluvialis squatarola'')
*Hen harrier
The hen harrier (''Circus cyaneus'') is a bird of prey. It breeds in Eurasia. The term "hen harrier" refers to its former habit of preying on free-ranging fowl.
It migrates to more southerly areas in winter. Eurasian birds move to southern Eur ...
(''Circus cyaneus'')
*Common redshank
The common redshank or simply redshank (''Tringa totanus'') is a Eurasian wader in the large family Scolopacidae.
Taxonomy
The common redshank was formally described by the Swedish naturalist Carl Linnaeus in 1758 in the tenth edition of his ...
(''Tringa totanus'')
*Ringed plover
The common ringed plover or ringed plover (''Charadrius hiaticula'') is a small plover that breeds in Arctic Eurasia. The genus name ''Charadrius'' is a Late Latin word for a yellowish bird mentioned in the fourth-century Vulgate. It derives fr ...
(''Charadrius hiaticula'')
* Ruff (''Philomachus pugnax'')
*Common shelduck
The common shelduck (''Tadorna tadorna'') is a waterfowl species of the shelduck genus, ''Tadorna''. It is widespread and common in the Euro-Siberian region of the Palearctic, mainly breeding in temperate and wintering in subtropical regions; in ...
(''Tadorna tadorna'')
The estuary is also the current mooring location for the radio ship ''Ross Revenge
MV ''Ross Revenge'' is a radio ship, the home of Radio Caroline, as well as having supported Radio Monique and various religious broadcasters. Funded by the Icelandic government, she was constructed in Bremerhaven in 1960 and served as an I ...
'', the home of former pirate station Radio Caroline
Radio Caroline is a British radio station founded in 1964 by Ronan O'Rahilly and Alan Crawford initially to circumvent the record companies' control of popular music broadcasting in the United Kingdom and the BBC's radio broadcasting monopoly. ...
See also
*Osea Island
Osea Island ( oe, Ōsgȳþes īeg, "Osyth's island"), formerly also Osey, is an inhabited island in the estuary of the River Blackwater, Essex, East England. It is approximately in size and is connected to the north bank of the river by a ca ...
* Pewet Island
References
External links
Its management and conservation project
{{Authority control
Estuaries of England
Special Protection Areas in England
Sites of Special Scientific Interest in Essex
Sites of Special Scientific Interest notified in 1955
Nature Conservation Review sites
Economy of Essex
Ramsar sites in England
Managed retreat
Coastal Essex