On 25 June the Lower Sixth A-level biology students went on a lovely field trip to Amersham Field Studies Centre to investigate a variety of ecosystems. We looked into succession, species biodiversity and population. We started the day by collecting woodlice in a specific area for the mark, release, recapture process to estimate the population size. Next, we looked at two woodlands in different stages of succession to compare the species richness and biodiversity. Overall, the day was very educational and useful to help further our understanding and knowledge of ecosystem and biodiversity to help us with our A-level studies. It was a fun day out in nature, which many of us are not used to.