A 3D Approach for the Visualization and Edition of Hierarchies: The Case of Biological Taxonomies

Oftentimes we come across information that is organized as a tree structure. Visualization of large trees is challenging because of the limited space available on computer displays. In this work we explore 3D space as an alternative that intends to maximize the available space on the screen. We developed Den3D, an interactive web-based multi-user 3D environment that implements cone trees for the visualization and management of hierarchies in the domain of biological taxonomies. In addition to its visualization capabilities, a novel editing functionality was introduced for users to flexibly create and maintain their own taxonomies. Volume tests were performed to determine size limits for the deployment of hierarchies. Additionally, a user study with high school science and biology teachers was conducted to assess the potential of Den3D to support biodiversity education.