Omanawanui Coastal Forest
Size: 56 hectares
The Omanawanui Coastal Forest biodiversity focus area extends along the coast from the southern end of Whatipu to Little Huia in the Waitākere Ranges. Paratutae Rock, situated on the northern side of the entrance to Manukau Harbour, is also included.
Key ecosystems and vegetation
This biodiversity focus area includes a mix of coastal forest (WF4) and pōhutukawa treeland/flaxland/rockland (CL1) on cliffs and hillslopes which rise steeply from the Manukau Harbour. The land here is rugged and volcanic.
The dominant canopy trees in the coastal forest are:
Vegetation on the cliffs and on Paratutae Rock includes a mix of pōhutukawa, flax, houpara, coastal astelia and salt-tolerant native herbs.
The coastal forest provides valuable habitat and food sources for common native forest birds including:
- kōtare (kingfisher)
- pīwakawaka (fantail)
- riroriro (grey warbler)
- tauhou (silvereye).
The large native trees overhanging the shoreline also provide roosting and nesting habitat for shag species.
Coastal weeds controlled by Auckland Council in this area include Mexican daisy, agapanthus, pampas, wild ginger and Formosan lily.
Pōhutukawa treeland, flaxland and rockland ecosystem (CL1)
This ecosystem occurs on coastal rock faces and eroding hill-slopes around the Auckland coastline and on offshore islands. It contains a mosaic of different plant communities including herbs, flax, shrubs and trees.