Research is continually emerging on the impacts of invasive species, pollution and environmental disasters on ecosystems and communities. Ecological scientists will discuss widespread environmental changes—from the recent discovery of genetically modified plants in the wild to the implications of mercury found in bottlenose dolphin skin, and even exploring society’s reactive mode toward environmental disasters in the U.S.—at the Ecological Society of America’s 95th Annual Meeting in Pittsburgh from August 1-6, 2010. Below is a sampling of some of the research to be presented on a wide array of environmental issues:

Genetically modified canola plants in the wild

Scientists currently performing field research in North Dakota have discovered the first evidence of established populations of genetically modified plants in the wild. Meredith G. Schafer from the University of Arkansas and colleagues from North Dakota State University, California State University, Fresno and the U.S. Environmental Protection Agency established transects of land along 5,400 km of interstate, state and county roads in North Dakota from which they collected, photographed and tested 406 canola plants. Continue Reading →

The quickest, best way to slow the rapid melting of Arctic sea ice is to reduce soot emissions from the burning of fossil fuel, wood and dung, according to a new study by Stanford researcher Mark Z. Jacobson.

He examined the effects of soot – black and brown particles that absorb solar radiation – from two types of sources. He analyzed the impacts of soot from fossil fuels – diesel, coal, gasoline, jet fuel – and from solid biofuels, such as wood, manure, dung, and other solid biomass used for home heating and cooking in many locations. He also focused in detail on the effects of soot on heating clouds, snow and ice. Continue Reading →

Exceptionally long heat waves and other hot events could become commonplace in the United States in the next 30 years, according to a new study by Stanford University climate scientists.

“Using a large suite of climate model experiments, we see a clear emergence of much more intense, hot conditions in the U.S. within the next three decades,” said Noah Diffenbaugh, an assistant professor of environmental Earth system science at Stanford and the lead author of the study.

Writing in the journal Geophysical Research Letters (GRL), Diffenbaugh concluded that hot temperature extremes could become frequent events in the U.S. by 2039, posing serious risks to agriculture and human health. Continue Reading →

Over the last 800,000 years, natural factors have caused the atmospheric carbon dioxide (CO₂) concentration to vary within a range of about 170 to 300 parts per million (ppm). The concentration of CO₂ in the atmosphere has increased by roughly 35 percent since the start of the industrial revolution. Globally, over the past several decades, about 80 percent of human-induced CO₂ emissions came from the burning of fossil fuels, while about 20 percent resulted from deforestation and associated agricultural practices. In the absence of strong control measures, emissions projected for this century would result in the CO₂ concentration increasing to a level that is roughly 2 to 3 times the highest level occurring over the glacial-interglacial era that spans the last 800,000 or more years. Continue Reading →