Invasive Species News and Research, May 2021

Conversations around invasive species management in North America range from endangered species protection to Covid-19's relationship to biological invasions.
buff tailed bumblebee flying toward white flowers

The staff and board of the North American Invasive Species Management Association review invasive species headlines each month. This helps us stay on top of trends and further our mission to support, promote, and empower invasive species prevention and management in North America. We then share invasive species news most relevant for people who manage terrestrial and aquatic invasive species across the the United States, Canada, Mexico and the world.

Prevention, Outreach and Education

Pennsylvania Invasive Species Projects StoryMap

Pennsylvania — Explore on Esri StoryMaps

Updates from member organizations of the Governor’s Invasive Species Council highlighting their invasive species efforts.

The Ants, Bees and Wasps of Canada, Alaska and Greenland: A Checklist of 9250 Species

North America, Greenland — Read on

These distributional lists provide essential baseline information required prior to undertaking studies to introduce biological control agents of invasive pests that may have escaped their native, natural enemies when they arrived in North America.

New Research

Two Invasive Beachgrasses are Hybridizing

Oregon — Read on Science Daily

The findings are important in the context of coastal vulnerability to the effects of climate change, including increasing danger from flooding and erosion from storms and rising water.

Invasive Species Costing Africa $3.66 tn a Year: Study

Africa — Read on

The team studied open source and peer-reviewed literature on species that were not native to the continent but had caused crop losses to assess the economic impact on yield, management and the cost of research.

Insect and Animal Invasions Can Teach us About COVID-19

Global — Read on

An investigation by an international team of scientists, including the University of Leeds’ School of Biology, says the emergence of human diseases share many of the same challenges as species invasions and that studying them together could provide solutions.

Invasive Species Alters Marine Community, Interferes in Post-disaster Recovery

North Carolina — Read on

Clavelina oblonga, an invasive marine fouling species, not only reduces diversity in communities it invades, it also interferes in their recovery following natural disasters—a process known as “succession.”


Detection, Management and Control

Eagle Scout sets plastic bottle on tree to collect invasive Asian giant hornet
Emma Eakins hangs a trap she made to trap invasive hornets as part of her project to become an Eagle Scout. Photo by Jaime Valdez, Pamplin Media Group.

Oregon to Set ‘Murder Hornet’ Traps on Washington Border

Oregon — Read on Portland Tribune

As a research team from UC Davis discovered, invasive species don’t go quietly. Nor do they react well to full-on assaults. In fact, years of digilent and costly crab removal from a Bay Area lagoon went terribly wrong, triggering an unexpected population explosion.

buff tailed bumblebee flying toward white flowers


Nectar Thieves: How Invasive Bumblebees Threaten Hummingbirds

Global — Read on The Revelator

This excerpt from a new book describes how the invaders may be contributing to the decline of native Chilean bumblebee species, through competition and, perhaps, through diseases they carry to which native bumblebees have little or no resistance.

Return the National Parks to the Tribes

North America — Read on The Atlantic

Through hard practice—and in the face of centuries of legal, political, and physical struggle—Indian communities have become adept at the art of governance. And tribes have a hard-earned understanding of the ways in which land empowers the people it sustains.

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