Various forms of mercury are released naturally by volcanoes and weathering of rocks and soil. Human activities, such as mining or burning fossil fuels, can also release the element into the ...

A years-in-the-making model developed by the National Park Service and U.S. Geological Survey could offer a deeper look at mercury concentration levels on federal lands across the country — including ...

The Lockport Prairie Nature Preserve provides a summer home for a small group of an endangered species of dragonflies born and raised in a biology lab in South Dakota. A team of ecologists with the ...

This is a preview. Log in through your library . Abstract Acidified bog ponds were the only previously reported habitat of larvae of the dragonfly Leucorrhinia dubia (Van der Lind.) (Odonata: ...

What Attracts Dragonflies to the Garden? “I started seeing dragonflies in my garden last summer but hadn’t seen them before.

Stress can kill on a dramatic scale, according to a new study of immature dragonflies forced to live next to scary predators. In a newly published study, dragonfly larvae living within sight and smell ...

This is a preview. Log in through your library . Abstract Cannibalism is likely to operate as a form of population control in dragonfly larvae. I performed aquarium experiments to investigate the ...

I was lucky enough to come across some dragonfly larvae and over the past few weeks, I photographed their awesomemetamorphosis. There have been no comments made here ...

How many of us grew up being told that if we told a lie a dragonfly would come and sew our mouths shut? Pretty scary! This is where the common darner (a type of large dragonfly) gets its name - a ...

Just the mere presence of a predator can stress out dragonfly larvae enough to kill them — even if the dragonflies are out of the predator's reach and completely safe, a new study shows. Biologists at ...

EDITOR'S NOTE: Rudolf Schilder, assistant professor of entomology at Penn State University, took some time to explain why Pennsylvania residents are seeing so many dragonflies this month. He studies ...