The source of ecological information is Focusing Ecological Research for Conservation – PMC (nih.gov)
From what we have learned from the tutorial, the source contains references(bibliography), is written by experts (Bogdan Cristescu and Mark S. Boyce) in their field, and has in-text citations, all these make the source academic. The source contains different headings for the material like introduction, methodology, graphic information, conclusion, etc. which states that the source is well-researched. In acknowledgment, the author is thanking individuals for reviewing the manuscript, so the source is peer-reviewed.