Hi Not a regular poster but I hope someone can help.
In my coursework I used point sampling to investigate the percentage cover of lichen on two aspects of a dry stone wall (North and South sides). #
In the final section, I need to give limitations for this method of sampling, the effect it has on my results and the effect it has on my conclusions.
My teacher said that point sampling is subjective and is accurate to within 18%, but I need more information than this I need to find out how he worked the 18% figure out as well so I can include that.
If anyone has any suggestions for limitations of point sampling, it would be really useful. Thanks!
Are you going to achieve yours?