Forest defoliator outbreaks alter nutrient cycling in northern waters

Forest defoliator outbreaks alter nutrient cycling in northern waters

Abstract

Insect defoliators alter biogeochemical cycles from land into receiving waters by consuming terrestrial biomass and releasing biolabile frass. Here, we related insect outbreaks to water chemistry across 12 boreal lake catchments over 32-years. We report, on average, 27% lower dissolved organic carbon (DOC) and 112% higher dissolved inorganic nitrogen (DIN) concentrations in lake waters when defoliators covered entire catchments and reduced leaf area. DOC reductions reached 32% when deciduous … [more…]

Where There’s a Weevil, There’s a Way!

Where There’s a Weevil, There’s a Way!

What do you do when 6,000 acres of your favorite place disappear?! When the lake you love becomes an endless expanse of floating green ferns? Fear not: with the power of community and a few underappreciated insect superheroes, not all hope is lost!

Strap in! On this edition of Saturdays Around the World , we’re headed out for a wild ride to investigate the happenings of Caddo Lake in Texas. … [more…]

Human Medicine Loading River Creatures With Dozens of Drugs

photo: spider and web near water supply. Human Medicine Use Loading Up River Creatures With Dozens of Different Drugs

Spiders, such as the one pictured here, are found in riparian environments all over the world. They build their webs over streams and catch aquatic insects as they emerge from the water. Pharmaceuticals in the insects spread to the spiders and other organisms on land. Photo: Stephen Hamilton

Medicines do an excellent job of increasing the quality of life for humans around the world, but the drugs don’t stay with

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DEP using water insects to measure waterway health

The Pennsylvania Department of Environmental Protection is making public aquatic life sampling results from across the state. The data is publicly available in a GIS viewer with downloadable data sets. Known as benthic macroinvertebrates, these are the insects and animals that spend most, if not all, of their lives underwater. They can be mayflies or midges, crayfish or clams, or one of many other underwater species, and are one of … [more…]

Why Water Striders Make Terrible Lifeguards





With the drought officially over and the summer heat upon us, people all across California are heading outdoors. For many, that means a day on the river or relaxing by the lake. The wet winter means there’s plenty of habitat for one of nature’s most curious creatures. Water striders, also called pond skaters, seem to defy gravity. You’ve probably seen them flittering across the water’s surface, dodging ripples as they

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