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Te Waihora/Lake Ellesmere is of outstanding national and international importance for wildlife

Te Waihora is fed by over 40 streams and rivers. It is an internationally significant wetland, recognised for its cultural significance and outstanding native vegetation and wildlife values.

The lake supports a large variety of habitats, leading to high biological diversity and it is home to many migratory wader bird species and threatened indigenous species. In addition, Kaitorete Spit, the 25km-long barrier that separates Te Waihora from the ocean, contains the most significant coastal sand dune system in Aotearoa New Zealand, both in terms of its size and condition and its diversity of invertebrates.

The shallow coastal lagoon, and associated wetland environment of Te Waihora, is recognised as the single most diverse bird habitat in the country. 166 species of birds have been recorded here, including 133 indigenous species - with up to 98,000 birds on the lake at one time. At least 37 species breed in the lake and are resident during the year, some flying in from as far away as Russia, China and Canada.

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Lakeshore vegetation

The lake has diverse plant communities with each one influenced by variations in salinity, elevation, sediment, soil type and lake level.

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In addition to the unique wetland vegetation, algae, bird species and fish, Te Waihora is home to an aquatic community of insects, lizards and other vegetation that all make up the lake food chain.