The documents both start with the title of the paper in bold followed by the names of the authors. The slime mold paper labels the abstract as such while the leaf-mining paper does not, though both abstracts are found at the start of each paper. The leaf-mining paper is structured like classic primary literature, featuring level 1 headings for the introduction, methods, results, discussion, and references sections, as well as various level 2 headings within each section. However, the slime mold paper is organized by topic using only level 1 headers.
The abstracts of both papers are short paragraphs describing the object of and reason for the study. The introduction to the leaf-mining paper opens with an explanation as to why the subject of the study was chosen, followed by a series of explanatory paragraphs concerning the reasons for the study. The first section of the slime mold paper describes the conceptual question at hand and addresses the reason for the study.