popular logistics

[photopress:10howl2.jpg,thumb,alignleft] Kirk Johnson’s piece in today’s Times, “A Bid to Lure Wolves With a Digital Call of the Wild” is about
the Howlbox, a solar-powered, automated device which simulates wolf calls, and records the responses, making it possible to conduct a wolf census.

Under a research project at the University of Montana in Missoula, scientists are betting that the famous call-and-response among wolves can be used to count and keep track of the animals.

Tricked by technology, scientists say, wolves will answer what amounts to a roll call triggered by a remotely placed speaker-recorder system called Howlbox. Howlbox howls, and the wolves howl back. Spectrogram technology then allows analysis that the human ear could never achieve — how many wolves have responded, and which wolves they are.

“With audio software, we’ll be able to identify each wolf on a different frequency, so we can count wolves individually, kind of like a fingerprint,” said David Ausband, a research associate at the University of Montana Cooperative Wildlife Research Unit, where Howlbox was developed.

The devices, using off-the-shelf technology, cost about $1,300, including $300 for a solar panel. Audio recordings in the wild are nothing new, of course. Bird and amphibian researchers, in particular, have long used recordings to find or flush out critters. Howlbox’s innovations are the tools of digital analysis and programmed instructions that tell Howlbox when to howl, when to sleep because the wolves are sleeping, and how to store each day’s file on a disk.

The experiment will begin with a pilot project in which four Howlboxes will be placed in remote areas of Idaho in June. That month was chosen because it is when the packs gather with their spring-born pups in what is called a rendezvous. [photopress:19howlbox.190.jpg,thumb,alignright]
Wolf pups will howl at almost anything, scientists say. But a test here in Montana in January also showed that adult wolves can also be fooled by a good sound system.

Money is a driving force behind the research, much of which is being paid for by the Nez Perce Indian tribe in Idaho, which has deep cultural links to the western gray wolf.

Traditional tracking tools like radio collars and aerial surveillance were used extensively after wolves were reintroduced into Yellowstone National Park in the mid-1990s under the Federal Endangered Species Act. But federal protections will end later this month, and so too will the deep pockets needed for flyovers and catching and collaring.

A spokesman for the Nez Perce tribe, Curt Mack, said Howlbox might be a cost-efficient answer.

Spotted in “Counting Wolves” at Popular Science.

The biodiversity issues aside - we’re eager to take a look at the device - which might be adaptable for other purposes: automated warning systems, locating disaster victims - especially if mounted on a portable platform, like a ‘bot of some sort.

Taras Grescoe, (bio, slightly out of date, here; in a Times Op-Ed called “How to Handle an Invasive Species? Eat It,” has a proposal for dealing with, among other invasive species, the Asian carp.

Closer to home, the Asian carp, which has been working its way north from the Mississippi Delta since the 1990s, is now on the verge of reaching the Great Lakes. This voracious invader, which weighs up to 100 pounds and eats half its body weight in food in a day, has gained notoriety for vaulting over boats and breaking the arms and noses of recreational anglers.

it is high time we developed a taste for invasive species

Having outcompeted all native species, it now represents 95 percent of the biomass of fish in the Illinois River and has been sighted within 25 miles of Lake Michigan. The only thing preventing this cold-water-loving species from infesting the Great Lakes, the largest body of fresh water in the world, is an electric barrier on the Chicago Sanitary and Ship Canal.

One of the great unsung epics of the modern era is the worldwide diaspora of marine invasive species. Rising water temperatures brought on by global warming have allowed mauve stingers and harmful algae to thrive far beyond their native habitats. Supertankers and cargo ships suck up millions of gallons of ballast water in distant estuaries and ferry jellyfish, cholera bacteria, seaweed, diatoms, clams, water fleas, shrimp and even good-sized fish halfway around the globe.

Thanks to the ballast water discharged by ships entering American ports, Chinese mitten crabs now infest San Francisco Bay, and the Chesapeake’s oysters are preyed upon by veined rapa whelks native to the Sea of Japan. Sixty percent of the species in the St. Lawrence River were introduced by ships that ply the seaway to Lake Ontario.