Coopers Lagoon / Muriwai | |
---|---|
Muriwai o Whata (Māori) | |
Location | Selwyn District and Christchurch City, Canterbury region, South Island |
Coordinates | 43°51′30″S172°18′00″E / 43.8583°S 172.3001°E |
Type | Brackish lagoon |
Primary inflows | Youngs Creek |
Basin countries | New Zealand |
Max. length | 1.15 km (0.71 mi) |
Max. width | 0.76 km (0.47 mi) |
Surface area | 2 ha (4.9 acres) [1] |
Max. depth | 2.1 m (6 ft 11 in) [1] |
Surface elevation | 3 metres (9.8 ft) [2] |
Coopers Lagoon / Muriwai is a small coastal waituna-type lagoon in the Canterbury region of New Zealand, located approximately halfway between the mouth of the Rakaia River and the outlet of the much larger Lake Ellesmere / Te Waihora. [3] While the present-day lagoon is separated from the nearby Canterbury Bight by approximately 100 metres (330 ft), the water of the lagoon is considered brackish and early survey maps show that, until recently, the lagoon was connected to the ocean by a small channel. [4] The lagoon, along with the surrounding wetlands, has historically been an important mahinga kai (site of traditional significance for food and other natural resources) for local Māori.
In 1998, Coopers Lagoon was officially given a dual place name as part of a Treaty of Waitangi settlement with Ngāi Tahu, receiving the name Coopers Lagoon / Muriwai. [5]
Coopers Lagoon / Muriwai is recognised as a nationally significant habitat for birdlife, forming part of a chain of waituna and hāpua extending along the east coast of the South Island from Lake Grassmere / Kapara Te Hau in the north to Washdyke and Waituna lagoons further south. [3] [2] Approximately 70 species of animals and 50 species of plants have been identified at the lagoon, including birds such as the pūkeko, bar-tailed godwit and kāki as well as the shortfin and longfin eels, whitebait and freshwater crayfish, among others. [4] The lagoon is also home to mysis shrimps in the genus Tenagomysis, which form swarms in the lagoon. [6] The lagoon is also New Zealand's largest wild breeding population of the introduced mute swan, and an important winter habitat for the white-winged tern. [2] Muriwai's proximity to the much larger Te Waihora heavily influences its ecology, with an 1865 survey of the region showing a network of wetlands between the two locations. Despite these wetlands since being converted to farmland, this relationship remains important to the lagoon. [4]
As with several other coastal lagoons in the Canterbury region, Coopers Lagoon / Muriwai is rated as having a poor water quality. Water quality ratings since 2004 have shown the lagoon to have a trophic level index of between 4-5, classifying the lagoon as eutrophic. [1] Despite being 100 metres (330 ft) from the ocean, the amount of springs which feed the lagoon mean that it is primarily freshwater, with the exception of a small portion of saltwater marsh near the lagoon's northeastern corner. [2]
Muriwai has traditionally been of large importance to Māori as a food source and is recognised as a wāhi taonga (place of significance) for local Hapū. The lagoon is associated with local legends, which hold that a person named Tuna-o-ruka-i-te-raki descended from heaven to live in the lagoon as a serpent. This serpent was said to have been captured and dismembered by residents of a local village and its parts cast into the water, where the parts became various species of eel known to Māori. [4] Māori access to Muriwai for food gradually decreased as European settlement surrounding the lake increased, causing the quality of natural resources managed by local hapū at the lagoon to decline.
In 1998, control of the lakebed and surrounding area were vested in Ngāi Tahu with the passage of the Ngāi Tahu Claims Settlement Act 1998, part of a landmark Treaty of Waitangi settlement which also included the renaming of the lagoon to its current dual name. This began a new period of Māori engagement with the lagoon, culminating in the 2016 publication of a joint management plan with Environment Canterbury to support the restoration of the original wetland environment in the area. [4] The lagoon is also popular with hunters and fisherman, with pre-established maimai for waterfowl hunting expressly protected from removal by the Ngāi Tahu Settlement Act. [7]
Iwi are the largest social units in New Zealand Māori society. In Māori, iwi roughly means 'people' or 'nation', and is often translated as "tribe", or "a confederation of tribes". The word is both singular and plural in the Māori language, and is typically pluralised as such in English.
Ngāi Tahu, or Kāi Tahu, is the principal Māori iwi (tribe) of the South Island. Its takiwā is the largest in New Zealand, and extends from the White Bluffs / Te Parinui o Whiti, Mount Mahanga and Kahurangi Point in the north to Stewart Island / Rakiura in the south. The takiwā comprises 18 rūnanga corresponding to traditional settlements. According to the 2018 census an estimated 74,082 people affiliated with the Kāi Tahu iwi.
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Kāti Māmoe is a Māori iwi. Originally from the Heretaunga Plains of New Zealand's Hawke's Bay, they moved in the 16th century to the South Island which at the time was already occupied by the Waitaha.
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Claims and settlements under the Treaty of Waitangi have been a significant feature of New Zealand politics since the Treaty of Waitangi Act 1975 and the Waitangi Tribunal that was established by that act to hear claims. Successive governments have increasingly provided formal legal and political opportunity for Māori to seek redress for what are seen as breaches by the Crown of guarantees set out in the Treaty of Waitangi. While it has resulted in putting to rest a number of significant longstanding grievances, the process has been subject to criticisms including those who believe that the redress is insufficient to compensate for Māori losses. The settlements are typically seen as part of a broader Māori Renaissance.
Port Levy is a long, sheltered bay and settlement on Banks Peninsula in Canterbury, New Zealand. The current population is under 100, but in the mid-19th century it was the largest Māori settlement in Canterbury with a population of about 400 people. It is named after Solomon Levey, an Australian merchant and ship owner who sent a number of trading vessels to the Banks Peninsula area during the 1820s.
Kaitiakitanga is a New Zealand Māori term used for the concept of guardianship of the sky, the sea, and the land. A kaitiaki is a guardian, and the process and practices of protecting and looking after the environment are referred to as kaitiakitanga.
The Ōnawe Peninsula is a volcanic plug inside Akaroa Harbour, on Banks Peninsula in Canterbury, New Zealand. It is the site of a former pā. It is part of the Banks Peninsula Volcano.
Lake Forsyth is a lake on the south-western side of Banks Peninsula in the Canterbury region of New Zealand, near the eastern end of the much larger Lake Ellesmere / Te Waihora. State Highway 75 to Akaroa and the Little River Rail Trail run along the north-western side of the lake.
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The Ngāi Tahu Claims Settlement Act 1998 is an act of Parliament passed in New Zealand relating to Ngāi Tahu, the principal Māori iwi (tribe) of Te Waipounamu the South Island. It was negotiated in part by Henare Rakiihia Tau. The documents in relation to the Ngāi Tahu land settlement claim are held at Tūranga, the main public library in Ōtautahi Christchurch.
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Kemp's Deed, also known as the Canterbury Purchase, Kemp's Purchase, or the Ngāi Tahu Purchase, is the purchase of Canterbury, New Zealand, from some Ngāi Tahu chiefs by Tacy Kemp on behalf of the New Zealand Company. It is the Crown's largest purchase from Ngāi Tahu and the "least carefully transacted". The grievance caused by the Crown was settled 150 years later through the Ngāi Tahu Claims Settlement Act 1998 and a compensation package valued at NZ$170 million.
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