These databases have articles related to the field of biology:
Now on EBSCOhost. Citations and abstracts for journal articles in the life sciences.
Journal articles about the biological, ecological and environmental sciences.
Journal, magazine, and news articles, as well as book chapters and books relating to biology.
Journal articles and books published by Elsevier, covering the natural and social sciences.
Citations for journal articles in the life sciences, particularly relating to biomedicine, neuroscience, as well as plant and animal sciences.
Use Scopus or Google Scholar to discover articles that cite and are cited by your original source. This is a great way to find more recent articles related to your topic.
Citations and abstracts for journals, books, and conference proceedings, primarily in the natural and social sciences.