Research topic: “Altitudinal variation in orthoptera species richness and diversity in rice based farming system of western Nepal”
I've reviewed that various statistical methods such as non-parametric estimators for species richness (bootstrap, ICE, chao1, chao2, ACE, jackknife1, jackknife2, michaelis menten mean), abundance distribution model, alpha and beta divesity indices are used in different species diversity researches. What could be the suitable ones considering my research title?
Since 99+% of all insects have some portion of their lifecycle underground, knowing where and how long they spend phases of their lifecycle might be of some interest. They obviously pass from ground level to higher altitudes briefly in their ascent/descent. I might suggest the following general parameters of interest to a non-entomologist (myself, a plant pathologist) reading a future publication, presented as the testable null hypotheses:
HØ: Occupation of Strata ‘Altitude (x) - Altitude (x+increment)’ duration (hours>1?) is not typical for species z during feeding season.
HØ: Occupation of Strata ‘Altitude (x) - Altitude (x+increment)’ duration(hours>1?) is not typical for species z during mating season.
HØ: Occupation of Strata ‘Altitude (x) - Altitude (x+increment)’ duration(hours>1?) is not typical for species z during reproductive/egg-laying season.
note: given the limits of the fonts available with this web-interface, I've used parentheses to indicate what I would normally indicate with a subscript.
A simple ANOVA could be used to differentiate between different species richness at different altitudes. It depends on how many independent variable you are comparing, i.e. altitude, season, time of day, land cover, anthropogenic influence? You could also look at differences in functional diversity (see papers by Villeger, Mason, Mouchet etc.). My paper "Alexander et al. 2019 - Drivers of fine-scale avian functional diversity with changing land use: an assessment of the effects of eco-estate housing development and management" may provide you with a brief explanation of functional diversity, its importance as a measure of diversity, and the stats I used to determine differences.
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