Last Update

2013-10-21T00:00:00.000Z

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Wrong Ryan Hanavan?

Ryan P. Hanavan

Entomologist

NA, Office of the Durham Field Rep, Forest Health & Economics

Direct Phone: (603) ***-****       

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NA, Office of the Durham Field Rep, Forest Health & Economics

Background Information

Employment History

Forest Entomologist

USDA

Head Coach

Northern Arizona University

Entomologist

Forest Service Agency

Web References (4 Total References)


Forest Service Forest Entomologist ...

www.post-journal.com [cached]

Forest Service Forest Entomologist Ryan Hanavan said Thursday the decline in the 274-square-mile area is due almost exclusively to the hemlock woolly adelgid.


RYAN HANAVAN- Head ...

www.aiaseattle.org [cached]

RYAN HANAVAN- Head Coach Northern Arizona University (208)301-8036 rhanavan02@fs.fed.us


The Neodiprion fulviceps, or native ...

www.azstarnet.com [cached]

The Neodiprion fulviceps, or native sawfly, visits an area en masse every 10 to 15 years, said Ryan Hanavan, entomologist for the Forest Service in Arizona. The female sawfly will split a pine needle open and lay her eggs inside. The young wasps hatch in the summer, spend 40 or 50 days crawling around and eating pine needles, then fall to the ground and burrow in, growing to adulthood as fall approaches. "We saw the sawflys effectively eating themselves out of house and home," Hanavan said, with some bugs starving because they had entirely consumed the branches in an area. Rodent and bird populations often follow, Hanavan said. They eat the bugs that collect on the trees and dig them out of the ground. When approached by predators, the sawflys become actors by pretending to be dead. If left alone, the bugs defoliate pine trees, but if about 20 percent of the pine needles remain on a tree, it likely will survive, Hanavan said. Then after two to three years, the bugs disappear entirely. Hanavan and research co-workers collect data on bugs and diseases by flying over national, tribal, state and private forest lands statewide yearly, looking for signs of disease and insects. The data are used to make maps that are given to various governments for policy decisions. In winter, Hanavan said, he plans to snowshoe out to various forest plots to survey insect activity.


The Neodiprion fulviceps, or native ...

www.azstarnet.com [cached]

The Neodiprion fulviceps, or native sawfly, visits an area en masse every 10 to 15 years, said Ryan Hanavan, entomologist for the Forest Service in Arizona. The female sawfly will split a pine needle open and lay her eggs inside. The young wasps hatch in the summer, spend 40 or 50 days crawling around and eating pine needles, then fall to the ground and burrow in, growing to adulthood as fall approaches. "We saw the sawflys effectively eating themselves out of house and home," Hanavan said, with some bugs starving because they had entirely consumed the branches in an area. Rodent and bird populations often follow, Hanavan said. They eat the bugs that collect on the trees and dig them out of the ground. When approached by predators, the sawflys become actors by pretending to be dead. If left alone, the bugs defoliate pine trees, but if about 20 percent of the pine needles remain on a tree, it likely will survive, Hanavan said. Then after two to three years, the bugs disappear entirely. Hanavan and research co-workers collect data on bugs and diseases by flying over national, tribal, state and private forest lands statewide yearly, looking for signs of disease and insects. The data are used to make maps that are given to various governments for policy decisions. In winter, Hanavan said, he plans to snowshoe out to various forest plots to survey insect activity.

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