The at least seasonal anoxia, as described above, results in a good preservation of all organic matter, including wood, seeds, and plant fragments. These fragments are washed into the basin by the creeks and get deposited in the sediment. They can be sieved out of the sediment very gentle to analyze the fraction >1 mm under a binocular. Many macroremains can be identified taxonomically to identify the plants they derived from. The results always match the findings from pollen, but the macroremains are much better suited to study the non-arboreal taxa, in particular remnants from past land use to the natural flowers in the catchment (Herbig & Sirocko, 2012). All results on macroremains have been summarized by Sirocko et al. (2016).
We have already started the use of macroremains for biomarker analysis (Anhäuser et al. 2014) It is a particular advantage of those particles that have been identified taxonomically precisely, like the oospores from Characeae (underwater vegetation near the lake surface). Ongoing biogeochemical analysis can reveal the temperature and water nutrient content quite precisely. Thus, the botanical macroremains are important to reconstruct the vegetation around the maar, but offer also insight into the temperature of the time of sedimentation, in particular the summer months.