R help - Apr 2005 - Dead wood code

Is there a package, or does anyone have code they are willing to share, that
would allow me to simulate sampling of dead wood pieces across an area?  I am
specifically looking for code to simulate the dead wood distribution as small
line segments across an extent, and then I will "sample" the dead wood
using different sampling techniques including line transects, fixed area plots,
etc.

Thanks,
Mike

Mike Saunders
Research Assistant
Forest Ecosystem Research Program
Department of Forest Ecosystem Sciences
University of Maine
Orono, ME  04469
207-581-2763 (O)
207-581-4257 (F)

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On Tue, 5 Apr 2005 10:07:00 -0400, "Mike Saunders"
<mike_saunders at umenfa.maine.edu> wrote :
>Is there a package, or does anyone have code they are willing to share, that
would allow me to simulate sampling of dead wood pieces across an area?  I am
specifically looking for code to simulate the dead wood distribution as small
line segments across an extent, and then I will "sample" the dead wood
using different sampling techniques including line transects, fixed area plots,
etc.
Walter Zucchini and others wrote a package for wildlife surveys; that
might have some methods in common with what you need.  The package was
called WiSP.  I don't see it on CRAN, but you can read the abstract
here:

http://www.math.usu.edu/~iface03/abstracts/03049.html

Duncan Murdoch

Mike,

I used R for exactly that purpose, to test a new
method for sampling coarse woody debris in silico
against existing alternatives. The results are
published in:
Bebber, D.P. & Thomas, S.C., 2003. Prism sweeps for
coarse woody debris. Canadian Journal of Forest
Research 33, 1737-1743.
I will put a reprint in the post, and will forward the
R code in a separate message. Please cite the article
and acknowledge the original code in any publications.

Cheers,
Dan Bebber

Department of Plant Sciences
University of Oxford
South Parks Road
Oxford
OX1 3RB
UK
> 
> Date: Tue, 5 Apr 2005 10:07:00 -0400
> From: "Mike Saunders"
> <mike_saunders at umenfa.maine.edu>
> To: "R Help" <r-help at stat.math.ethz.ch>
> Subject: [R] Dead wood code
> 
> 
> Is there a package, or does anyone have code they
> are willing to share,
> that would allow me to simulate sampling of dead
> wood pieces across an
> area?  I am specifically looking for code to
> simulate the dead wood
> distribution as small line segments across an
> extent, and then I will
> "sample" the dead wood using different sampling
> techniques including
> line transects, fixed area plots, etc.
> 
> Thanks,
> Mike
> 
> Mike Saunders
> Research Assistant
> Forest Ecosystem Research Program
> Department of Forest Ecosystem Sciences
> University of Maine
> Orono, ME  04469
> 207-581-2763 (O)
> 207-581-4257 (F)
> 
> 	[[alternative HTML version deleted]]
> 
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> 
> 
>