Monday, October 5, 2020

Die-off hits an old pure stand of ferns, one of the last unaffected




 The “high ground” is about five acres in the forest at Seward Park,  bordered by the sqebeqsed and Windfall Trails. It occupies the highest elevation area in the forest. The southern quarter of the high ground is dominated by large sword ferns, with few other understory plants.  

In January I found that about 3% of the ferns in these five acres were dead, all of them intermittently distributed, no regions of contiguous death.

Now, October 2nd 2020, contiguous die-off has appeared, showing the classic signs of the die-off.
The sword fern die-off can now be found throughout the entire 100 acres of the Magnificent Forest AND it spreads in concentrated, presumably more virulent form northward from the original ground zero.  Now, after six years of northward spread, this beautiful area - one of the last, large, old and intact sword fern communities at Seward - appears to have been hit.  There is no "social distancing" among these ferns.  A rapid (one or two year) demise is likely. 

It is always possible that this is a transient phenomenon, strictly limited to the small area pictured below - and thus not the first appearance of concentrated die-off.  Unlikely but possible.   Time will tell.

  A 15 second video that captures this beautiful, now threatened area: 





  Location in context (note the black dot):



2 comments:

  1. It looks like we are having the same issues here in Elmira OR. I just moved to a spot where we have a good deal of dead or dying ferns. Is there any way I can be of help in your investigations?

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  2. I replied directly but, alas, maybe that reply did not reach you.
    We would be grateful for any extra information you can provide, including photos and any sense you have of the phenomenon's progression.

    We just received a report of a likely, large (7 acre) die-off near Eugene.

    Is there any assistance we can offer you?

    Best - Paul Shannon

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