The phrase "jellyfish populations" refers to the number of jellyfish in a particular area or ecosystem. It represents how many jellyfish are present in that specific place. Full definition
It's unclear whether or not climate change has anything to do with the latest offensive, but scientists say that the increased jellyfish populations are indicative of changing ocean conditions: warmer water, and fewer predators due to overfishing. (treehugger.com)
The answer to the question of whether jellyfish populations are on the rise ultimately lies at this intersection, Berwald finds. (sciencenews.org)
In recent years, concerns about rising jellyfish populations in some parts of the world have mushroomed into headlines like «Meet your new jellyfish overlords.» (sciencenews.org)