Abstract

The GlobalTreeSearch database provides the names of all tree species known to science and the countries where these trees grow. TreeeX is a visual exploration system that supports multifaceted analyses of the GlobalTreeSearch data. Investigating research questions on biodiversity and conservation on a global or national scale are visually supported by interactive choropleth maps that color countries according to frequency, diversity or uniqueness of prevalent tree species. By combining the GlobalTreeSearch and ThreatSearch data sets, additional information on the conservation status of trees can be visualized globally and nationally through TreeeX. Similarities and differences in tree diversity, endemism and conservation status to other countries can be analyzed in detail. Several examples outline the system’s capability of delivering insights concerning the geographical diversity of tree species.

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