In my opinion it is necessary to consider the scientific context of this question in order to answer it properly and therefore it may not really be suitable for SE ELU. However, as I wish to discourage unnecessary scientific jargon when it can be replaced by familiar English, I shall offer the following.
Alternatives and Answers
There seems to me to be an initial problem of establishing the nature of relationship between the three ‘things’ you are using to obtain the ‘synthesis’ (“genetic diversity”). There seem to be two possibilities.
- They are independent properties of the organism that are all needed to obtain the synthesis. An analogy might be estimating the volume of a building from a combination of height, width and depth. Each gives an indication, but all are needed to obtain a synthesis.
In this case I would regard your properties as my initial suggestion:
aspects of genetic diversity
contributors to genetic diversity
However from my scientific knowledge this does not seem to me to be the case. Rather…
- They are alternative methods of assessing the value of a single property, each with its limitations. An analogy might be different methods in physics used to measure a constant where you don’t know which is best. Somehow one computes a best value from these different methods (by averaging or some more complex algorithm). One might regard each of them as a proxy for the value of the property.
In this case I would suggest that these are simply:
measures of genetic diversity
Note the difference in meaning (Cambridge Dictionary online) between measure
measure noun: a unit used for stating the size, weight, etc. of something, or a way of measuring
The sample’s density is a measure of its purity.
** measurement** noun: A measurement is the length, height, width, etc., of something, which you discover by measuring it:
The measurements of several of the drawings were identical.
The word, measure, is also suitable for a column heading in a table, if required.
Formulating an overall terminology
However if you use the word measure — which I do think is the answer — you need to avoid the word measurement everywhere else in your description. I don’t think that this is difficult because you are not really performing a measurement of each of the properties but compiling values based on data. So I think that the word you employ calculation works for this. Likewise, from the values of these measures of diversity you perform a further calculation, but as this involves some more complex mathematical manipulation you can distinguish it by using the word computation.
So I would rewrite your example:
I am computing genetic diversity in a simulated population. I am
doing this by calculating nucleotide diversity, gene diversity and
the number of polymorphic sites. All of these measures of genetic
There would seem no need to get involved in — and possibly misuse or confuse — metrics, statistics, or indices. The point of scientific writing is to communicate ones ideas as clearly as possible. I think that plain English can help.