On Fri, 2011-03-18 at 14:14 +0100, Sacha Viquerat wrote:
hello! I did a count survey on a tropical fish species! Well, I didnt do
it, Im just helping at the statistics-stage. We recorded some water
parameters alogside each catch, such as no3, no2, po4 etc. as the data
are count data (and
On Sun, 2011-03-27 at 20:18 +0100, Gavin Simpson wrote:
snip /
I think you are confusing the error structure with the model or
systematic structure? Yes, Poisson errors are expected with count
abundance data, or if there is more dispersion than expected under the
Poisson, then a negative
: Sacha Viquerat tweedi...@web.de
To: r-sig-ecology@r-project.org
Subject: [R-sig-eco] question about appropriate model for abundance
studies
Message-ID: 4d835aa4.40...@web.de
Content-Type: text/plain; charset=ISO-8859-15; format=flowed
hello! I did a count survey on a tropical fish
hello! I did a count survey on a tropical fish species! Well, I didnt do
it, Im just helping at the statistics-stage. We recorded some water
parameters alogside each catch, such as no3, no2, po4 etc. as the data
are count data (and require error terms due to spatial
pseudoreplication), the glm
