Oral Submission Presentation by Blake Foster - New Zealand ...

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Recommendations On Pukaki Downs it is recommended that: • All wildings be removed in the near future from the upper Twizel river catchment (blocks 25-29), except in the most densely forested areas in the eastern margin of that area (blocks 9-13 plus 19). • All wildings should also be removed from block 29, although planting it with a less spread-prone species is an option. • All wildings be removed from the steep slopes of the Rhoboro Range in the most north-western part of the station (block 30). • All wildings be removed in a 20m strip along the northern boundary with Ferintosh station and in a similar strip alongside SH80. • If finances allow (last priority) all wildings be removed from the steeper eastern scarp slopes (northern portion) of the Little Rhoboro Hills (block 20 and steeper part of 14). • Improved pasture and associated grazing (and/or arable cropping) be maintained where it is currently stopping wilding establishment - blocks 31 and 32 (both sides of SH80) and further to the west in parts of block 25). The north-eastern margin of block 31 would run out from the northern margin of DOC’s Dusky Reserve in order to maintain a treeless pasture margin. • Replacement plantings of less spread-prone species, such as radiata pine, its hybrid with Knobcone pine (P.radiata x P. attenuata) or ponderosa pine, be carried out along the eastern margins of the cleared areas in the upper Twizel river valley, either as 4-row marginal plantings along the western edges of blocks 9, 12, 13 and 19 (if retained in contorta pine), or as whole block replacement. • Replacement plantings of less spread-prone species, such as radiata pine, its hybrid with Knobcone pine (P.radiata x P. attenuata) or ponderosa pine (minimum of 4 rows), could also be carried out along the western margins of the lakeshore contorta pine forests in the south-eastern part of block 32. This will not be necessary where ponderosa or Corsican pine make up the current margin, or where adjacent pasture cover and grazing pressure is sufficient to stop significant establishment of wildings. • Replacement plantings or fertilising be carried out in the 20m marginal strips along the Ferintosh boundary (top of blocks 16 and 24) and alongside SH80. • Marginal strips (4 rows wide) be planted along the fenced north and western margins of the tree-less pasture-dominated block 31. • Blocks 9-24 (the pink and pink-striped areas on the map), including the corridor north of the Dusky Reserve between blocks 21 / 16 and 17 / 22 – 23, will become the containment area and could be managed for carbon storage. Initially, the dominant species would be contorta pine, but over time the aim should be to replace these with less spread-prone species. • Wilding removal sweeps be carried out before coning age (no more than 4 years apart) on all cleared or otherwise tree-less areas. • Long-term planning be initiated to ensure that the above to be implemented. ii
Table of Contents Wilding spread on Pukaki Downs station: Origin, future spread risks and management options Nick Ledgard Scion PO Box 29237, Fendalton, Christchurch 8540 June, 2010 EXECUTIVE SUMMARY -----------------------------------------------------------------------------------i Project and client ------------------------------------------------------------------------------------------1 Introduction --------------------------------------------------------------------------------------------------1 Objectives ----------------------------------------------------------------------------------------------------1 Methods -------------------------------------------------------------------------------------------------------2 Main findings ------------------------------------------------------------------------------------------------2 Spreading species----------------------------------------------------------------------------------------2 History of wilding spread--------------------------------------------------------------------------------3 Likely future spread with no further management------------------------------------------------6 Priority control areas for minimising spread risk beyond present locations (particularly off-station) --------------------------------------------------------------------------------------------------7 Options for containing conifers within managed areas --------------------------------------- 10 Assisting containment on Pukaki Downs. -------------------------------------------------------- 11 Areas for C storage management------------------------------------------------------------------ 12 Discussion ------------------------------------------------------------------------------------------------- 12 Recommendations -------------------------------------------------------------------------------------- 13 Acknowledgement--------------------------------------------------------------------------------------- 14
Page 1 and 2: Oral Submission Presentation by Bla
Page 3: 16. The responsibility the NZ carbo
Page 6 and 7: REPORT TITLE AUTHORS CLIENT CLIENT
Page 10 and 11: Project and client In April, 2010,
Page 12 and 13: History of wilding spread Pre 1970s
Page 14 and 15: is by the musterer’s hut at the m
Page 16 and 17: most depleted existing cover and it
Page 18 and 19: successfully on small trees close t
Page 20 and 21: ~ Herbaceous cover. Wildings have d
Page 22 and 23: event indicates that once the Twize
Page 24 and 25: Above. The clear corridor (pink-str
Page 26 and 27: Developments from Rural Delivery we
Page 28 and 29: We have sold the carbon credits thr

Oral Submission Presentation by Blake Foster - New Zealand ...

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