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Displaying 3461 to 3480 of 3531

  • West Nile Virus

    • Michigan Department of Natural Resources.

  • Western Governors' Association Launches Invasive Species Data Mobilization Campaign

    • Dec 18, 2020
    • Western Governors' Association.

    • The Invasive Species Data Mobilization Campaign of the Western Governors’ Association seeks to encourage national, state, and local land managers, private landowners, and non-governmental organizations to enter previously unavailable data into new or existing invasive species data management platforms using Findings and Recommendations (May 15, 2018) [PDF, 244 KB] developed by WGA and invasive species data experts. WGA and the North American Invasive Species Management Association launched the campaign in December 2020 with a webinar featured representatives from the four existing data platforms -- EDDMapS, iMapInvasives, BISON (see note below), and USGS NAS -- discussing the importance of invasive species data standardization and sharing.
      Note: GBIF-US was formerly hosted at BISON.USGS.gov. The BISON website was taken down on December 17, 2021 and users are redirected to www.gbif.us.

  • What Beekeepers Should Know About Bee Mites

    • Sep 2018
    • Purdue University. Entomology Extension. Indiana Cooperative Agricultural Pest Survey (CAPS).

  • What is an Invasive Species and Why are They a Problem?

    • DOI. United States Geological Survey.

  • What is Whirling Disease? [PDF, 551 KB]

    • North Central Regional Aquaculture Center.

    • See also: Publications for more diseases

  • What Is White-nose Syndrome?

    • DOI. National Park Service.

  • What Looks Like an Asian Giant Hornet

    • May 2020
    • North Carolina State University. Extension.

    • Learn about some of the common species of wasps, bees and other non-wasp species, such as hover flies and robber flies, that superficially resemble the Asian giant hornet.

  • What Makes This Invasive, Non-Native Reed Grass Thrive in the Wetlands?

    • Apr 6, 2022
    • Louisiana State University.

    • The Mississippi River Delta is home to the world’s largest contiguous swath of Phragmites australis, or more commonly known as the common reed. But the plant that can grow to nearly 20 ft. and has been a critical component in stabilizing the state’s coastal erosion is not actually native to Louisiana—well, not entirely. There are multiple P. australis genotypes. P. australis subspecies (ssp.) americanus is the native subspecies in the U.S. and Canada. However, Phragmites australis ssp. australis originated in central Europe and was subsequently introduced to the U.S. where it is now considered to be one of the most problematic invasive species in North America. "Novel genome characteristics contribute to the invasiveness of Phragmites australis (common reed)" in Molecular Ecology and recently featured in an edition of The Scientist, LSU researchers collaborated with Tulane University and the U.S. Geological Survey to study the genomic bases of P. australis and to investigate what exactly makes the invasive reed grass subspecies thrive in wetlands, in comparison to its native counterpart.

  • What to Do If You Think You Have Found an Asian Carp [PDF, 584 KB]

    • 2010
    • Invasive Carp Regional Coordinating Committee.

    • See Invasive Carp Newsroom for updated news regarding Asian carp response in the midwest.

  • What's Happening Around Florida Blog: Invasive Species

    • University of Florida. IFAS Extension.

  • What’s Killing Beech Trees?

    • Feb 3, 2020
    • USDA. ARS. Tellus.

    • A chance discovery in an Ohio woodland has turned into a multi-disciplinary, multi-agency, and multi-national effort to piece together a puzzle and understand a scourge that is killing trees by the thousands in northern states east of the Great Plains. The leaves of young beech trees are failing somehow. Scientists have figured out what causes the malady; it’s the 'how' that has them scratching their heads. Beech trees are one of the most common trees in America's northern and northeastern forests. Their nut crop feeds birds and other animals, and its wood is prized for bentwood furniture. The symptoms of beech leaf disease were plain to see – sunken dark spots on the leaves, which eventually died – but opinions differed on the cause. Was it bacterial, fungal, or viral? Then, a plant pathologist working for the State of Ohio noticed wiggly things in the leaf lesions. They turned out to be nematodes, microscopic worms that live in the soil, that had somehow managed to make it to the tree canopy 40-50 feet above ground. Nematode samples were sent to Beltsville, MD, for analysis and identification at the Agricultural Research Service (ARS) Mycology and Nematology Genetic Diversity and Biology Laboratory in Beltsville, MD. The nematode, Litylenchus crenatae, turned out to be native to Japan – the first population of L. crenatae found in the Western Hemisphere. The curious thing is that it's not a tree-killer in Japan.

  • Whatcom Weeds: Curly-Leaf Pondweed [PDF, 361 KB]

  • Whirling Disease and Oregon's Trout and Salmon

    • Oregon Department of Fish and Wildlife.

  • White Pine Blister Rust

    • Sep 2001
    • Plant Management Network. Plant Health Progress.

  • White-Nose Syndrome

    • DOI. USGS. National Wildlife Health Center.

  • White-nose Syndrome and Minnesota's Bats

    • Minnesota Department of Natural Resources.

  • White-Nose Syndrome Confirmed in Bat in Texas

    • Mar 5, 2020
    • Texas Parks and Wildlife Department.

    • For the first time, Texas Parks and Wildlife Department (TPWD) biologists have confirmed the disease white-nose syndrome (WNS) in a Texas bat. Up until this point, while the fungus that causes the disease was previously detected in Texas in 2017, there were no signs of the disease it can cause. WNS has killed millions of hibernating bats in the eastern parts of the United States, raising national concern. WNS is a fungal disease only known to occur in bats and is not a risk to people. However, bats are wild animals and should not be handled by untrained individuals. The public is encouraged to report dead or sick bats to TPWD at nathan.fuller@tpwd.texas.gov for possible testing.

  • White-nose Syndrome Detected in Bats at Devils Tower National Monument, Wyoming: Two Bats Are State's First Confirmed Cases

    • Jun 15, 2021
    • DOI. NPS. Devils Tower National Monument.

    • Wildlife researchers have confirmed the presence of white-nose syndrome (WNS) in bats at Devils Tower National Monument. While this is the first confirmation of WNS in the state, the fungus that causes WNS, Pseudogymnoascus destructans (Pd), was potentially detected in southeast Wyoming as early as 2018. Biologists from the University of Wyoming discovered evidence of WNS during surveys completed in early May 2021, when they captured and sampled bats to test for the fungus.

      The NPS will be working closely with the climbing community at Devils Tower to better understand and develop guidance for climbers to help care for and protect Wyoming’s bat populations – including how to safely clean and disinfect climbing gear. Climbers and cavers who have used gear or clothing in WNS-infected areas should not re-use them in areas not already known to have Pd fungus. If you see a sick or dead bat, report it to park rangers or Game and Fish biologists, but do not touch or pick up the bat.