Connecticut Agricultural Experiment Station.

Scientists from the Connecticut Agricultural Experiment Station (CAES) are reporting that Beech Leaf Disease (BLD) has increased dramatically in both severity and distribution in 2022 compared to 2021. First detected in lower Fairfield County in 2019, BLD is now widespread on American beech (Fagus grandifolia) throughout all eight Connecticut counties, with symptoms most severe in Fairfield, New Haven, Middlesex and New London Counties. Given that BLD is now widely established throughout Connecticut, reports of BLD to CAES and DEEP are no longer requested.

Secretariat of the Convention on Biological Diversity; World Health Organization.

See in particular Chapter 3: Freshwater, Wetlands, Biodiversity and Human Health, section 5.1 "Aquatic Invasive Alien Species" and Chapter 7: Infectious Diseases, section 2.3.4 "Implications of Biotic Exchange (Invasive Alien Species)".

Galapagos Conservation Trust.

Purdue University Extension. Forestry and Natural Resources (Indiana).

Publication FNR-421-W
See also: Forestry and Natural Resources publications

USDA. Natural Resources Conservation Service.

New York State Department of Environmental Conservation.

In this issue, we learn about invasive species, their impacts, and what we can do to help stop their spread. 
See also: Invasive Species: K-12 Educator Resources for more information.

USDA. FS. Forest Health Technology Enterprise Team.

Classical biological control, which reunites invasive insects or plants that have spread in new, invaded areas with their natural enemies, is the only means of reducing permanently and over large areas the harm such invaders cause. Short of eradication, which is rarely practical once an invader has spread widely, this method is the only solution that does not depend on endless control activities and their associated costs. The purpose of this book is to highlight the value that programs of classical insect and weed control have provided to the United States over roughly the last 40 years (1985–2022).
See also: FHAAST Publications for more resources.

La Plata National University (Argentina). Invading Mollusks Research Group.

Virginia Department of Forestry.

See also: Forest Health for more resources

Pennsylvania State University. School of Forest Resources.

National Academies. Transportation Research Board.

National Cooperative Highway Research Program (NCHRP Synthesis 363). This synthesis reviews federal, state, and regional approaches; prevention, early detection, and rapid responses; identification of aspects of operations and risks; statewide inventories; and information management. In particular, this report synthesizes the state of the practice in developing Integrated (Roadside) Vegetation Management, along with physical, chemical, biological, and cultural control mechanisms.

Alabama Cooperative Extension System.

USDA. FS. Northern Research Station. Rooted in Research.

Ailanthus altissima (tree-of-heaven) is a rapidly growing invasive tree species introduced to the United States nearly 200 years ago. Today, this species is a common invader in many forests across the nation. Scientists with the Northern Research Station have identified a unique biological control measure for managing Ailanthus—Verticillium nonalfalfae, a native soil-borne fungus. Check out this latest issue of Rooted in Research that explores how Verticillium can reduce Ailanthus populations.

Louisiana Department of Wildlife and Fisheries.

Native Plant Trust.

Formerly the New England Wild Flower Society.

Ohio State University. Extension.

Ohio State University. Extension.

Ohio State University. Extension.

USDA. FS. Southern Research Station. CompassLive.

Callery pear (Pyrus calleryana) can be found across most of the eastern U.S. and in a few western states as well. The nonnative tree was brought to the U.S. in 1917 by a USDA employee searching for a blight-resistant species that could be bred with European pear to increase fruit production.

The most common Callery pear cultivar is the Bradford pear. In the last two decades, this near-ubiquitous landscaping tree has been identified as a serious invasive pest. A new publication examines herbicide treatments to control the spread of Callery pear. Lead author J.T. Vogt is a research scientist with the USDA Forest Service.

Nature Conservancy.

Since 2013, the Cool Green Science blog has covered the best of conservation science: innovative solutions to the most pressing conservation problems, field reporting on the latest research, adventures from biologists, opinion and commentary, and plenty of bizarre and cool creatures.