’In Puerto Rico’s rainforest, scientists have observed an astounding loss of life at the very base of the food web. It’s the insects.
As an alarming new study in Proceedings of the National Academy of Sciences outlines, between 1976 and 2013, the number of invertebrates (like insects, spiders, and centipedes) in the Luquillo rainforest caught in survey nets plummeted by a factor of four or eight. When measured by the number caught in sticky traps, invertebrates declined by a factor of 60. These dramatic drops occurred despite the fact that the forest is a protected wildlife area.
The researchers note that this loss of invertebrates — which serve as food for many other forms of life in the ecosystem — has also coincided with losses of birds, lizards, and frogs. “The food web appears to have been obliterated from the bottom,” the Washington Post’s Ben Guarino reported on the study. Guarino’s story quotes one invertebrate expert who called the research “hyper alarming.”…’