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Managing our Environment

Blackmans Inland Saline Wetland Management Area

Description:

A small saline area on Earnscleugh Station. 1

Type/Class:

Inland saline 2

Size:

12.3 ha

Altitude:

320-400 m above sea level

Approximate location:

Fraser Dam Road, 3 km Northwest of the intersection of Hawley Road and Blackman Road, Alexandra.
NZTM (centre point): E1306990 N4983910

Regional Plan:

Water for Otago
Schedule 9 Regionally Significant Wetland, no.12, Map F12.

Territorial Authority:

Central Otago District Council

 

Blackmans Inland Saline Wetland Management Area

Recorded Values

 

Value

Description

A1

Habitat for nationally or internationally rare or threatened species or communities. Presence of the threatened species Myosurus minimus subsp. novae-zelandiae; a large area of this species surrounds the bare salty area. 1, 8

A5

Scarce in Otago in terms of its ecological or physical character. An extensive community of salt tolerant plants including Atriplex buchananii. Distinctive Lepidoptera and moth fauna associated with salty soils and salt tolerant plants. One of the few saline sites in the region. 1, 8

A2-A4, A6-A9

 No relevant information is currently held by the ORC

 

Other Information:

  • Spring annuals found in the Blackmans Inland Saline Wetland Management Area include Ceratocephalus pungens, Myosotis pygmaea var. minutiflora and Crassula tetramera. 4

  • Halophyte species found in the Blackmans Inland Saline Wetland Management Area include glaucous goosefoot (Chenopodium glaucum), Puccinellia raroflorens (threat status of nationally critical), Puccinellia fasciculate, and Puccinellia stricta. 8

  • Invertebrate species recorded in the Blackmans Inland Saline Wetland Management Area include Capua semiferana, Crocydopora cinigerella, Eudonia sabulosella, Eudonia leptalea, Eurythecta zelaea, Kiwaia thyraula, Loxostege sp. nov., Orocrambus corruptus and Scoparia exilis. 8

  • The Department of Conservation considers the Blackmans Inland Saline Wetland Management Area to be a very important site for biological conservation. On a scale from 1 (highest value) to 11 (lowest value) the site was given a rank of 3, 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 to the wetland include fertiliser application and oversowing. 8

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

 

Aerial View of Blackmans Inland Saline Wetland Management Area (March 2005)

Aerial View of Blackmans Inland Saline Wetland Management Area (March 2005)

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.

4 Peat, N. and Patrick, B. H. (1999) Wild Central. Discovering the natural history of Central Otago. Published by the University of Otago Press, Dunedin.

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.

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