a) This is an article I found in Wiley Online Library, it was published on Diversity and Distributions, a journal of conservation biogeography.
McKinney, M.L. (2005), Species introduced from nearby sources have a more homogenizing effect than species from distant sources: evidence from plants and fishes in the USA. Diversity and Distributions, 11: 367-374. https://doi.org/10.1111/j.1366-9516.2005.00181.x
b) This is an academic, peer-reviewed review material.
c) First, this is an academic material because 1. It is written by an expert in the field, Michael L. McKinney, who is the professor and Director of Environmental Studies, Department of Earth & Planetary Sciences in the University of Tennessee. 2. This paper has in-text citations. 3. This paper includes a bibliography at the end of the article.
Secondly, this is a peer-reviewed material because this article is published on a scholarly journal and should be reviewed by at least one expert in this field before published.
Thirdly, this is a review material, because although this article contains the method and result parts, they are not done by the author himself. The author collected data from other researchers and did a meta-analysis work and reported his analysis results. Therefore, this cannot be seen as a research article, it is a review material instead.
Careful on peer review, you are correct that most journals are though you can check each journal if it is a journal you are not familiar with or the acknowledgements of the paper will often mention anonomous reviewers