Maps are everywhere these days. They have become as ubiquitous in our daily lives as they have in the science community. Citizen science projects that utilize maps are instantly familiar, easy to use, and enrich scientific data with a valuable spatial component.
Treezilla is a tree-mapping project based in Great Britain and hopes to enlist citizen scientists to map every single tree in the UK. Many of the trees in Britain’s forests have already been mapped (nearly 3.8 billion, in fact). However, the estimates of urban trees in cities, parks, and people’s yards have been poorly catalogued. These trees, although in much smaller number, still have a significant ecological value and are important to study. (...) - Scistarter blog, by Nick Forbes, September 12th, 2013
Via Tree of Science