a) The paper I have chosen as a source of ecological information is titled: Do Nitrogen and Phosphorus Additions Affect Nitrogen Fixation Associated with Tropical Mosses?
Link: https://www.mdpi.com/2223-7747/12/7/1443
b) This paper is an academic, peer-reviewed, research article.
c) Documentation supporting classification of this article as an academic, peer-reviewed research paper includes in-text citations with a References section, it is written by experts in the field (academic credentials mentioned on the first page), and it has a detailed Methods section as well as a Results section with descriptive figures and charts to report their findings. Furthermore, the authors thank their reviewers in the Acknowledgments section, showing proof of at least one referee.