Re: Plants becoming pests, a little bit off-topic
I recall years ago I carried out a botanical survey of an area near
Taupo, NZ,(but not the area Brian Swale mentions). Part of the area
was in Pinus radiata forest. I was surprised at the number of natural
hybrids of Asplenium growing under those pine trees. Asplenium
flccidum, A. oblongifolium and A polyodon were involved, and there
may have been another species. The area has since been
clearfelled. I seem to recall reading that disturbed habitats
encourage the production of hybrids
Nick Miller
Rotorua, New Zealand
On 2 Mar 2004 at 13:33, Brian Swale wrote:
> Hi folks
>
>
> I'd like to point out that Pinus radiata is the basis of very valuable
> forest- based industries, is very amenable to management and does not
> run wild over the country in New Zealand. It has an excellent
> many-purposed timber. P. radiata enables economic use to be made of
> lands that currently have no other economic use.
>
> Similarly, Douglas-fir from North America is valued in NZ.
>
> Maybe the most surprising relict Californian species to grow well in
> New Zealand, is Cupressus macrocarpa which is a valued shelter species
> and yields a much valued, durable and aromatic timber.
>
> The one North American pine species now banned here is Pinus contorta
> which has great ability to thrive and spread over high altitude
> tussock grassland where the climate is cold and tends to extremes.
> This colonisation it is capable of is disliked by those who want to
> conserve the tussock grasslands in a near-natural state.
>
> Ferns and other plants such as orchids grow quite well under older
> pine and fir plantations and there is one noted orchid reserve near
> Taupo under P. ponderosa.
>
> Brian Swale
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