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Research and Field Notes — Page 15

Fungus makes zombie ants administer ‘death bite’ at noon

Researcher David Hughes has expanded research on a parasitic fungus and its carpenter ant host. As explained in an excerpt from a previous EcoTone post: Scientists have found that the parasitic fungus Ophiocordyceps unilateralis has possibly been invading carpenter ants (Camponotus) for 48 million years. The parasite not only infects the ant, but it manipulates the ant’s behavior, driving it…

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Unseen and unforeseen: measuring nanomaterials in the environment

International interest and investment in nanotechnology is growing—said panelists in this morning’s public forum in Washington, D.C. hosted by RTI International—and development and commercialization of this technology need to meet societal expectations. That is, explained moderator Jim Trainham of RTI, the public is concerned with understanding and controlling nanotechnology since, if it cannot be controlled, the technology is not considered…

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Scientists detect aquatic ecosystem warning signal

Scientists have found what appears to be the stress signals of a lake ecosystem that is on its way to collapse. Stephen Carpenter of the University of Wisconsin, Madison and colleagues carefully monitored the food web in a Wisconsin lake as they gradually introduced largemouth bass into the ecosystem. The researchers noticed a shift in the algae populations that were…

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Buffo the truffle-hunting dog, night-blooming balsa trees and fire-ant-made rafts

Truffle shuffle: According to a letter published in the April issue of Frontiers in Ecology and the Environment, Buffo the truffle-hunting dog made an unusual find: a one-pound Burgundy truffle in the forests of southern Germany in November. As lead author Ulf Büntgen said in a recent Wired Science article, “This wasn’t a small find, but a big and expensive…

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Shrew poo and worm goo are science too

Last week I had the pleasure of being a speaker at Buck Lodge Middle School’s Career Day. Several public schools in Maryland, where Buck Lodge is located, and other states organize important events like these to get students thinking about future opportunities. Do you remember what it was like to be in middle school? To the middle school me, a…

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National Parks, dance lessons from a spider and bellybutton biodiversity

National Parks Week: In addition to Earth Day activities, this week is also National Parks Week. Allie Wilkinson of the blog Oh, For the Love of Science! paid tribute with a mini-travel guide on Acadia National Park in Maine; the post is complete with trail information and scenic views (see below video). “Maine may as well be my home away…

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Noise pollution in the ocean damages cephalopods’ auditory structures

Pollution is not limited to toxic chemicals in the air and water—light pollution in urban environments, for example, has been shown to affect the mating rituals of some birds. Research has also shown that noise pollution in the oceans alters the behavior and communication of marine life such as dolphins and whales that depend on sound for daily activities. And…

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Outlaw mussels invade the West

This post contributed by Adele Conover, a freelance science writer specializing in natural history. On Halloween night 2005, an anonymous trickster left a jar crammed with zebra mussels on the doorstep of the Charles M. Russell Wildlife Refuge office in Lewiston, Montana. Dr. Eileen Ryce, Montana Fish, Wildlife and Parks Aquatic Nuisance Coordinator, was stunned. “We assume that the anonymous…

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Strange but true tales from botany

The natural world is ripe with stories more incredible than the human mind can possibly fathom. Similarly, some of the most engaging science fiction is set within the boundaries of real phenomena. For example, the tale of a human-eating plant—a legend that dates back to at least 1881, and one that has been popularized by the 1960 American film The…

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Tracking seed-dispersing piranha in the Amazon

Fish are probably not the first animals that leap to mind when thinking of seed dispersers. Squirrels are well-known examples, but researchers have recently tracked a species of frugivorous—that is, fruit-eating—piranha in the Amazon that distribute seeds over more than five kilometers of flood plains. As Daniel Cressey described in a Nature News article, “Although fish have long been suspected…

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Wildlife damage from Japan’s tsunami

Most people have heard about the damage caused by last week’s massive magnitude 9 earthquake that sent a tsunami—at times reaching 33 feet—onto the island nation of Japan. The situation in Japan is dire. According to CBS News, “An estimated 452,000 people are living in shelters following the earthquake and tsunami. Japan’s police agency currently puts the death toll at…

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Hybrids in the Arctic

Hybridization has led to some of the unique, naturally-occuring species present today, such as the Mallard duck-American Black duck hybrid. Usually this natural process takes generations to produce a new distinct species; however, it is possible for hybrids to emerge within one generation. For example, interspecies breeding could be expedited due to environmental stressors caused by climate change. Species that…

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