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John Ascher

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A mountain bumblebee (Bombus appositus) that John Ascher identified for a contributor to the community science website BugGuide.net.

John S. Ascher is an American entomologist. He specializes in the study of Apoidea (bees as well as sphecid wasps) and has been described as "one of the world's leading native bee taxonomists."[1] While they get less publicity than the industrious honeybee, bees indigenous to the Americas play a crucial "role in pollinating crops such as tomatoes, cranberries, alfalfa and squash, experts say. They are often more effective than honeybees as pollinators, and more resistant to problems that have decimated honeybees in the U.S. and Europe, several studies show.”[2]

Career

Ascher is an assistant professor at the National University of Singapore and is the senior project manager of the Bee Database at the American Museum of Natural History.[3]

Ascher has compiled an index of all known bee species in our biosphere, which as of 2008 totaled 19,200 types of bees.[4][5] Ascher told NPR’s Talk of the Nation in 2013, “We know that this is a big underestimate because there are vast numbers of new species…waiting in our collections for a taxonomist to have the resources to describe them.”[6]

He led the data-collection effort on one project that determined “that declining bee species tend to have larger body sizes, restricted diets, and shorter flight seasons [and] ‘southern’ bees reaching their northern distributional limits in the Northeast are increasing, a finding that could reflect a response to climate change.”[7]

His data was also used to generate a map of bee diversity worldwide that determined bees prefer dry, treeless landscapes in temperate zones rather than dense, humid forests, which is an “unusual distribution.” Daniel Cariveau of the University of Minnesota’s Cariveau Native Bee Lab described the creators of the map project as “really some of the best taxonomists in the world.”[8]

Ascher found the newly identified bee species Lasioglossum gotham in a New York City botanic garden.[9]

References

  1. ^ Neal, Quinn; Sinanan, Samuel (2020-05-22). "137 John Ascher - The problem with measuring bee decline". PolliNation Podcast - Oregon State University (OSU) Extension Service. Archived from the original on 2021-01-22. Retrieved 2022-08-08.
  2. ^ "Native Bees are all the Buzz." Wall Street Journal (Online), Apr 28, 2012.
  3. ^ "ANHM staff directory: Ascher, John". Archived from the original on 2022-08-08. Retrieved 2022-08-08.
  4. ^ Thompson, Andrea (2008-06-16). "Bees outnumber birds and mammals". www.nbcnews.com. Archived from the original on 2022-08-08. Retrieved 2022-08-08.
  5. ^ "John Ascher | The Brian Lehrer Show". WNYC. Archived from the original on 2022-08-08. Retrieved 2022-08-08.
  6. ^ "Getting The Springtime Buzz On Bees". NPR.org. Archived from the original on 2022-08-08. Retrieved 2022-08-08.
  7. ^ "New research confirms plight of bumble bees, persistence of other bees in Northeast". ScienceDaily. Archived from the original on 2022-08-08. Retrieved 2022-08-08.
  8. ^ Wetzel, Corryn (2020-11-19). "Scientists Create a Buzz With the First Ever Global Map of Bee Species". Smithsonian Magazine. Archived from the original on 2022-08-08. Retrieved 2022-08-08.
  9. ^ Olsen, Erik (2011-11-10). "City Bees Newly Discovered, Yet Here All Along". The New York Times City Room Blog. Archived from the original on 2022-08-08. Retrieved 2022-08-08.
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