UD study seeks to better understand foraging competition between Adelie, gentoo penguins
For hundreds of years, Adélie penguins have been breeding in the West Antarctic Peninsula (WAP), which has recently become one of the most rapidly warming areas on Earth. (more…)
UD study connects penguin chick weights to local weather conditions
Adélie penguins are an indigenous species of the West Antarctic Peninsula (WAP), one of the most rapidly warming areas on Earth. Since 1950, the average annual temperature in the Antarctic Peninsula has increased 2 degrees Celsius on average, and 6 degrees Celsius during winter. (more…)
Scientists use satellites, underwater robot to study Atlantic sturgeon migrations
More than a century ago, an estimated 180,000 female Atlantic sturgeon arrived from the coast in the spring to spawn in the Delaware River and fishermen sought their caviar as a lucrative export to Europe. Overfishing contributed to steep population declines, however, and today numbers have dwindled to fewer than 300 adults.
Researchers at the University of Delaware and Delaware State University are using satellites, acoustic transmitters, an underwater robot and historical records to pinpoint the ocean conditions that the fish prefer during migrations — and potentially help fishermen avoid spots where they might unintentionally catch this endangered species. (more…)
