Inland saline wetlands are also known as salt pans because they are characterised by surface salts and saline soils that are moderate to highly alkaline (pH > 7). These salts accumulate after the weathering of different geological substrates and the evaporation of soil moisture. The surface salts are mostly grey-white in colour but can also be yellow and pink.

The salty conditions are toxic to most plants but species that typically occur in coastal zones do well, including NZ Grassplant (Lilaeopsis novae-zelandiae), Oxybasis ambigua, NZ celery (Apium prostratum subsp. prostratum var. filiforme), Selliera microphylla and Buchanan’s orache (Atriplex buchananii).

The projected natural range of Inland Saline Wetlands across Aotearoa is 1,587 hectares.

Common native species, photos courtesy of NZ Plant Conservation Network: