This article has been reviewed according to Science X's editorial process and policies. Editors have highlighted the following attributes while ensuring the content's credibility: University of Georgia researchers recently located the mammal equivalent of a needle in a haystack: weasels. Weasels are extremely difficult to find, so not much is known about their preferred habitats and overall population health in the Southeast.
For a new study published in Wildlife Letters, the team used a combination of strategic camera placement and detection dogs to monitor the mysterious creatures. By applying what they learned from this new detection technique in North Georgia to other locations, the researchers confirmed the presence of long-tailed weasels in other parts of the state. They also documented weasels in South Georgia for the first time in 30 years.
"Because weasels are notoriously difficult to detect, we don't have much information on them. We know that despite their small size, they are efficient hunters, playing an important role in pest management," said Lexie Dingerson, coauthor of the study and a master's student in UGA's Warnell School of Forestry and Natural Resources. "We have to better understand populations, which is why this new monitoring strategy is important.
Our research offers a starting point." In one study, researchers conducted two tests over the course of a year across about 30,000 acres (47 square miles) in the North Georgia wilderness to determine the presence of weasels. "We need to know about a species' ecology and abundance to make informed management decisions. That requires monitoring.
That's where this camera method comes into play," said Jenna Myers, corresponding author of the study and a doctoral candidate in the Warnell School. "If we don't know where species are or how populations are doing, we can't make informed management decisions, such as land protection and trapping regulations." The first round included placing 599 cameras in randomly selected locations that the researchers monitored for about 300 nights. Researchers retrieved each camera every two weeks to check footage.
Just 1.5% of cameras—nine out of 599—picked up weasels. For the second part of the study, the researchers relied on detection dogs. They placed cameras where the dogs alerted to possible weasel presence, resulting in 16 new camera locations.
Extract — continue reading at the source.
