u.s. virgin islands Johnston Atoll Through the Eyes of C.A.S.T.

Video by Peter Xiong / USFWS
Music by CC Josh Woodward "Memories"

Johnston Atoll National Wildlife Refuge, one of the most isolated atolls in the world, is located in the central Pacific Ocean, between the Hawaiian Islands and the Line Islands.

More than 15 species of birds rely on the refuge for safe nesting sites, including three species of boobies, sooty terns, greyback terns, red-tailed and white-tailed tropic birds, greater frigatebirds and several species of shorebirds.

Other than the birds, the only residents of the island are small teams of volunteers who are working to save the birds from invasive species.

Yellow crazy ants (Anoplolepis gracilipes) were most likely brought to the island unintentionally by humans. When the ants arrived on Johnston Atoll they quickly began to spread and wreak havoc on the thousands of nesting seabirds.

When yellow crazy ants invade, their numbers increase to such a high density they swarm and overrun anything in their path. Seabirds nesting on the ground are vulnerable to these swarms. The ants spray formic acid onto the birds and chicks which causes severe damage to the birds’ eyes ranging from swelling to blindness.

In 2010, the U.S. Fish and Wildlife Service started a project to eradicate yellow crazy ants from Johnston Atoll NWR. Crews of staff and volunteers would travel to Johnston Atoll for six months at a time to eradicate the ants and protect the seabirds. Since 2010, the crews have reduced the ants by over 98%.




CAST crews also work to restore the natural habitat of Johnston Atoll. The crews propagate three native plant species (Scaevola taccada, Cordia subcordata, and Tournefortia argentea) caring for them first in the nursery then in the hardening area and finally as out plantings in the refuge.

The crews may give up 8 months of their lives, communication with friends and family, and fresh food, but they gain a life changing experience and the chance to help save sea birds for future generations.

Learn more at https://goo.gl/j1gwXf

u.s. virgin islands Johnston Atoll Through the Eyes of C.A.S.T.
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Science & Technology	Upload TimePublished on 9 Apr 2018

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