JSTOR (short for journal storage) is a large, multi-disciplinary, scholarly full-text database. The contents are typically older issues of journals, so you won't find the most recent research here.
Select ADVANCED SEARCH to enter search in the Keyword search box, scroll down to narrow results to ONLY Articles, and scroll way down to filter to Biological Sciences journal publications. NOTE: The date of "more current" articles varies from 0-10 years ago, with the majority of articles in the JSTOR archive being having a publisher delay of 3-5 years.
BOOLEAN OPERATORS (AND OR NOT) MUST BE CAPITALIZED.
Click "Show all fields" and enter search in the titles/abstracts/keywords area, and narrow to research articles. ScienceDirect articles are all published by Elsevier, a company publishing scholarly articles by expert scientists.