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Articles on Insects

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Mosquito eggs float on the surface of a pond. The insecticide Bti is used to kill mosquito larvae, but it could also harm frogs. (Shutterstock)

Are mosquito-killing natural pesticides unintentionally harming frogs?

The insecticide Bti kills target organisms like mosquitoes and blackflies, but new research shows it may also have negative effects on non-target species like frogs.
These insects are basically little machines that convert carbon-rich leaves into nitrogen-rich poo. (John Gunn)

Very hungry caterpillars can have large effects on lake quality and carbon emissions

As environmental engineers, invasive caterpillars can have remarkable effects on water quality and soil conditions. But from a climate perspective they’re pretty much a nuisance.
Environmental DNA is a promising tool for tracking species in freshwater ecosystems like Oregon’s Elkhorn Creek. Greg Shine, BLM/Flickr

Scientists at work: We use environmental DNA to monitor how human activities affect life in rivers and streams

Rivers are among the most embattled ecosystems on Earth. Researchers are testing a new, inexpensive way to study river health by using eDNA to count the species that rivers harbor.

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