Plummeting insect numbers threaten collapse of nature

[Pjwum]

Thanks to Monsanto paying high interest on their bonds I was able to acquire a mint HP-32E this week (10 EUR). This basic Spice model has no programming capabilities but it is predestined to study changes in insects populations of your area:

1. Standard method, only basic functions needed (but could harm insects and affect your result)
- catch a good amount of an insect species in your area, mark and release them (m)
- wait a few days for them to mix with the rest of the population
- catch a good amount of the insect species in your area (n)
- count the marked and recatched specimen (r)
- your population p is p = m*n/r

2. Read somewhere in the Internet, uses regression analysis (but could harm trees)
- count number of insects on a medium sized tree branch (i)
- count the tree branches of the tree crown
- meisure the circumference of the trunk (t)
- repeat the branch count and the trunk measurement on a good amount of trees (b)
- construct a regression model for crown size depending on trunk circumference (this relation should be in fact linear and an HP-32E will suffice, it's an awful lot of typing though)
- your population p is p = sum (all trees in your forest, i*b(t))

Cheers