I am looking (to begin with) some simple ways to analyse changes in relative abundance of species numbers over time. All we have is a inventory list of the number of species for each four seasons, each year.
Note: we are doing a survey where people try and find as many species as possible. Its not very scientific, as in there are few controls on data collection methods, effort and distribution because it is a large area.
I was hoping there would be inter and intra annual changes we might see.... so if any one has ideas beyond looking at changes in number of species, and proportion of species I would be very thankful.