Friday, March 19, 2010

Giant tree ferns - an indicator species?


In a recent dry hot summer two of our mature mamaku tree ferns died. The bank was bone dry so I piped grey water from the shower down to them but couldn’t save them. This summer three more of these 30-yr-olds are dying off, a frond at a time. I can’t seem to do anything for them.

For a couple of years I have become aware of tree ferns along the forest and road margins dying off in exactly the same way. Most had only a small head of green fronds to start with, and one by one these have died off. There are now hundreds of bare, dead trunks left standing like bizarre headstones throughout the north.

But the interesting thing is, nobody I speak to seems to have noticed the loss of these giant ferns. I have googled the problem and the only complainants seem to be people in the South Island who have garden specimens that are susceptible to frost.

Come on, DoC, what’s happening to our Northland Mamaku? What's happening to our world?

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