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 ...

Carlsbad Caverns National Park staff recently collected dragonfly larvae for the Dragonfly Mercury Project. The project is ...

As one of the first-ever evolved winged insects, dragonflies have inhabited the earth for almost 300 million years. We instantly recognize these animals by their beautiful outer appearance and their ...

Dragonfly larvae sampled from Cape Cod and Minuteman National Historical Park recently helped tell a much bigger story about mercury pollution in the U.S. A national study published this week in 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 ...

(a) Number of observation records per 500-m elevational band. (b) Number of genera and the number of their observation records in the database. (c) Cumulative number of observation records of each ...

This is a preview. Log in through your library . Abstract Dragonfly larvae (Odonata: Anisoptera) are often abundant in shallow freshwater habitats and frequently co-occur with predatory fish, but ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Ecologists often rely on health data of fish and bird populations to ...

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 Cannibalism is likely to operate as a form of population control in dragonfly larvae. I performed aquarium experiments to investigate the ...

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 ...

We might dismiss dragonflies as colorful bugs flying in rapid twists and turns over a quiet pond under the scorching summer sun. But take a moment to watch these enchanting dragonflies. And be ...