Tiny moth from Asia spreading fast on Siberian elms in eastern North America

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  • September 17, 2018
  • In 2010, moth collector James Vargo began finding numerous specimens of a hitherto unknown pygmy moth in his light traps on his property in Indiana, USA. When handed to Erik van Nieukerken, researcher at Naturalis Biodiversity Center (Leiden, the Netherlands) and specialist in pygmy moths (family Nepticulidae), the scientist failed to identify it as a previously known […]

    How did coyotes conquer North America?

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  • May 23, 2018
  • Coyotes now live across North America, from Alaska to Panama, California to Maine. But where they came from, and when, has been debated for decades. Using museum specimens and fossil records, researchers from the North Carolina Museum of Natural Sciences and North Carolina State University have produced a comprehensive (and unprecedented) range history of the […]

    Scientists dive into museum collections to reveal the invasion route of a small crustacean

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  • May 8, 2018
  • Biological invasions are widely recognised as one of the most significant components of global change. Far-reaching and fast-spreading, they often have harmful effects on biodiversity. Therefore, acquiring knowledge of potentially invasive non-native species is crucial in current research. In particular, it is important that we enhance our understanding of the impact of such invasions. To […]

    Double trouble: Invasive insect species overlooked as a result of a shared name

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  • February 8, 2018
  • An invasive leaf-mining moth, feeding on cornelian cherry, has been gradually expanding its distributional range from its native Central Europe northwards for a period likely longer than 60 years. During that period, it has remained under the cover of a taxonomic confusion, while going by a name shared with another species that feeds on common […]

    A race against pine: Wood-boring wasp in North America threatened by a Eurasian invader

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  • January 22, 2018
  • Invasive species have diverse impacts in different locations, including biodiversity loss, as a result of native species being outcompeted for similar resources. A U.S. research team, led by Dr. Ann Hajek, Cornell University, studied the case of an aggressive Eurasian woodwasp that has recently established in North America and poses a threat to a native species. […]

    Poison ivy an unlikely hero in warding off exotic invaders?

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  • November 14, 2017
  • Dozens of studies have looked at the effects of Japanese knotweed on natural communities in Europe and North America. Yet Bucknell University professor Chris Martine still felt there was something important to learn about what the plant was doing along the river in his own backyard. “The more time I spent in the forests along the Susquehanna […]

    Invasive alien plant control assessed for the Kruger National Park in South Africa

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  • June 6, 2017
  • Along with urban and agricultural encroachment and pollution mitigation, managing invasive alien species is a key intervention needed to protect biodiversity. Unfortunately, on a global scale there are not enough funds to meet the requirements for effective conservation everywhere, which means that scarce funds need to be allocated where they can be used most efficiently. […]

    Long-distance survival: Effects of storage time and environmental exposure on soil bugs

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  • January 5, 2017
  • Contaminated soil frequently arrives at the borders through transported items, and is widely recognised as a vector for non-native species, potentially threatening the local agriculture, horticulture and natural ecosystems. However, although soil is the target of management practices that aim to minimise the spread of invasive alien species, crucial knowledge of the biosecurity hazards that […]

    Cost-benefit analysis of strategies against severely harmful giant hogweed in Germany

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  • October 3, 2016
  • While invasive species are considered to be a primary driver of biodiversity loss across the globe, species such as the alien for Germany giant hogweed pose even greater risks, including health hazards to humans, limited accessibility to sites, trails and amenity areas, as well as ecological damages. Since 1st January 2015, EU member states are […]

    Surprising exotic flies in the backyard: New gnat species from Museum Koenig’s garden

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  • April 4, 2016
  • Little did scientists Kai Heller and Björn Rulik expect to discover a new species in Germany’s Alexander Koenig Museum‘s garden upon placing a malaise trap for testing purposes. Not only did an unknown and strikingly coloured gnat get caught, but it turned out to be a species, which showed to have much more in common […]