The marc content of sugar beet denotes the insoluble cell wall compounds that have always been used as animal feed. In the foreseeable future, they will be used to generate power for sugar factories to reach a carbon-free sugar manufacturing process. To monitor the marc content of beet delivered to sugar factories in Germany, 1042 sugar beet samples were taken during the campaigns in 2018/19, 2019/20, and 2020/21. The average marc content was 3.87% in 2018, 3.89% in 2019, and 4.01% in 2020. The marc content was slightly lower on light and heavy soils than the prevailing loam soils, probably because of irrigation. With higher water availability during the season, the marc content was lower. The harvest date and the length of the storage period did not influence the marc content. Cultivars differed greatly in marc content, but no clear relationship existed to their sugar content. As the marc content of sugar beet affects the susceptibility to damage during harvest and loading, the infestation with pathogens during storage and thus storages losses, and influences the first processing steps as well, the marc content should be monitored to ensure that it does not continue to decrease any further.

In the coastal mountain range of the Maule region, 23 ravine rain forests dominated by canelo (Drimys winteri) and various native myrtaceae species were described in phytosociological terms in a study published in 1988. In this study, 20 of these forests were located again thirty years later to document their current situation in a context of successive anthropogenic impacts and climate change. The objectives of this study are to characterize changes in plant composition using the modified Braun-Blanquet phytosociological method, evaluate changes in soil occupation through comparative analysis of Landsat images from 1987, 2003 and 2017, and examine the natural regeneration of woody species inside and outside ravine forests. The results showed that between 1987 and 2017, the area occupied by native forest in the study area was reduced by 72 %. The importance and presence of representative species, such as Drimys winteri and Blechnum chilense reported in the original inventories, decreased, and sclerophyllous species, like Lithrea causticaand Cryptocarya alba, entered, along with introduced species, like Pinus radiata and Teline monspessulana.The regeneration of native trees and native creeping and climbing species was higher inside the ravine forests, while the germination of native shrubs was higher at their edges. The modification of the surrounding matrix of forests due to increased anthropic pressure and an advance of stressful conditions explains the observed changes.