[ECOLOG-L] Data Analysis - endemic species

2011-12-16 Thread Rajasri Ray
Dear All, I would like to get your suggestion on the issue below. I am studying endemic species distribution in a landscape especially in small patches. I have data related to species number, girth and height distribution, regeneration profile as well as measures of disturbance (4/5

[ECOLOG-L] Similarity index

2011-06-14 Thread Rajasri Ray
Hello, I am trying to compare species composition among different patches which vary in their sizes to a great extent.I am planning to compute Jaccard's similarity index for this. For species enumeration, in some patches I have documented presence of all members (due to very small size of

[ECOLOG-L] PCA enquiry

2011-05-16 Thread Rajasri Ray
Hello, I would like to get some help related to the problem mentioned below. Here is a data table (attached .xl file) on disturbance measurement of certain study areas. All parameters are scored based on certain ranking procedure (like yes = 1, no = 2 or 10-20% = 1, 21-40% =2 etc.), High