Pink Salmon Dramatically Impacting Food Web

Pink salmon abundance causes “trophic cascade” that could negatively impact other species

In a study published in Fisheries Oceanography, Sonia Dawn Batten, Greg Ruggerone and JISAO’s Ivonne Ortiz looked at 15 years of data on pink salmon abundance, as well as the abundance of zooplankton (tiny aquatic animals) and the phytoplankton on which they feed.

The study concludes there is a “trophic cascade” pattern occurring every two years, when pink salmon are particularly abundant.

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