Rockdale Inland Saline Wetland Management Area

Description: Small saline site adjacent to Chatto Creek-Omakau Road 1

Type/Class: Inland saline 2

Size: 2.7 ha

Altitude: 240 - 280 m above sea level

Approximate location: 1.5 km Northeast of the intersection of Omakau-Chatto Creek Road and Kinney Road, Omakau | NZTM (centre point): E1326500 N4997060

Regional Plan: Water for Otago | Schedule 9 Regionally Significant Wetland, no.130, Map F11

Territorial Authority: Central Otago District Council

Recorded Values

Value Description
A5 Scarce in Otago in terms of its ecological or physical character. Scarce wetland type. Many uncommon salt tolerant plants and insects. (see Grove 1994, p65 86). 1 Less than 18% of inland saline areas remain in Otago. 2
A1 - A3, A6 - A9 No relevant information is currently held by the ORC.

Other Information:

  • Listed as an Area of Significant Indigenous Vegetation, Habitats of Indigenous Fauna and Wetlands in the Central Otago District Plan. 55

  • Soil classified as Alkaline Argillic Semiarid Soil. 8

  • Native halophytes presence include Atriplex buchananii (threat status of naturally uncommon), and Lepidium kirkii and New Zealand mousetail (Myosurus minimus subsp. novae-zelandiae) which both have a threat status of nationally critical. 8

  • Invertebrate species recorded include Eurythecta zelaea, Orocrambus corruptus and Paranotoreas fulva. 8

  • The Department of Conservation considers the Rockdale Inland Saline Wetland Management Area to be an important site for biological conservation. On a scale from 1 (highest value) to 11 (lowest value) the site was given a rank of 4, on the basis of its geographical extent, relative representativeness (the extent to which the site represents the assumed 1840 condition), diversity and rarity of biota and soils. 8

  • Potential threats include irrigation, cultivation, fertiliser application, oversowing and grazing. 8

 

 

Aerial View of Rockdale Inland Saline Wetland Management Area (March 2006)

 

References:

1 Otago Regional Council (2004) Regional Plan: Water for Otago. Published by the Otago Regional Council, Dunedin.

2 Ausseil, A.G., Newsome, P., Johnson, P. (2008) Wetland Mapping in the Otago Region. Landcare Research Contract Report prepared for the Otago Regional Council.

8 Allen, R.B. and McIntosh, P.D. (1997) Guidelines for conservation of salt pans in Central Otago. Science for Conservation: 49. Published by the Department of Conservation, Wellington.

55 Central Otago District Council (2008) Central Otago District Plan, Published by Central Otago District Council, Alexandra.

Page last updated 10 July 2024.