We are approaching you based on the next step we are taking in one of the practical cases of WG1 3DForEcoTech COST Action, the one related to allometries and close range remote sensing (CRS). We are preparing a paper related to the usage of destructive data to develop allometric models for explaining volume or biomass of various species using CRS-and/or traditional measurements. We will work at tree level. Based on it, we would like to ask you if you have data from destructive measurements (traditional approach) and any CRS scan of the same tree. This kind of data is quite scarse and involves a lot of work. Therefore, the value of this data, combined from different locations/countries is even greater and we would really appreciate if you could help us in the compilation of information to improve the knowledge of this topic. If you can provide this kind of data (together with a review of the manuscript), we would like to offer you co-authorship in the publication for your datasets (one person per dataset). Together with the data, we need some extra information to analyse, classify and homogenise the information in further steps. In case you have any doubt, please do not hesitate to contact us: meinrad.abegg@wsl.ch, menendez.maria@inia.csic.es

Dear Participants, Your expertise in Close-range Remote Sensing (CRRS) can make a significant impact on the future of this technology. This brief survey aims to gather your experiences and insights in the field of CRRS. Your feedback will help us understand the challenges in the industry and work towards effective solutions. By completing this survey, you contribute to the collective knowledge of CRRS experts and play a crucial role in shaping the future of the technology. This servuey is related to the objectives of 3DForEcoTech COST Action (CA20118). More information about this collaborative project can be found here: 3DForEcoTech.eu Thank you in advance for sharing your valuable insights!