Featured Research

from universities, journals, and other organizations

Rebirth Of An Island After Volcanic Eruption

Date:
January 6, 2010
Source:
University of Alaska Fairbanks
Summary:
When Alaska's Kasatochi Volcano erupted on Aug. 7, 2008, it virtually sterilized Kasatochi Island, covering the small Aleutian island with a layer of ash and other volcanic material several meters thick. The eruption also provided a rare research opportunity: the chance to see how an ecosystem develops from the very first species to colonize the island.

Kasatochi volcano as seen from 17,000 feet above sea level on Oct. 23, 2008.
Credit: Image courtesy of Jerry Morris / via Alaska Volcano Observatory

When Alaska's Kasatochi Volcano erupted on Aug. 7, 2008, it virtually sterilized Kasatochi Island, covering the small Aleutian island with a layer of ash and other volcanic material several meters thick. The eruption also provided a rare research opportunity: the chance to see how an ecosystem develops from the very first species to colonize the island.

Related Articles


Next week, a team of researchers organized by the U.S. Geological Survey and the U.S. Fish and Wildlife Service will visit Kasatochi to look for signs of life on the island, almost exactly one year after the catastrophic eruption. The interdisciplinary research team will spend four days (Aug. 10-13) surveying the island, using the USFWS research vessel Tiglax as an operational base for the on-site research.

"Since volcanism plays such a big role in shaping the Aleutians, we hope to end up with a better understanding of how disturbances such as volcanic eruptions shape the ecology of these islands," says Tony DeGange, a USGS biologist and one of the research team coordinators. "There hasn't been a study quite like this done in Alaska where scientists are taking such a comprehensive ecological view of the impact of an eruption and its resulting response and recovery."

Researchers expect that insects and birds will be the first animal species that recolonize the island. In preparation for the August survey, biologists set up monitoring and sampling equipment on Kasatochi earlier this summer, including insect traps for Derek Sikes, curator of insects at the University of Alaska Museum of the North. Sikes visited Kasatochi in June 2008 for a one-day survey of the insect fauna on the island before the eruption. He will be part of the research team that visits the island next week.

"Work in similar systems shows that flying- and wind-borne insects and spiders form a fairly constant rain during the summer months," says Sikes, adding that some of these species survive by preying or scavenging on other arthropods. "We'll be looking for spiders, which are all predators, and ground beetles, which are mostly predators, as well as other species associated with bird droppings or vertebrate carrion."

An opportunity like this is extremely rare, according to Sikes. The most comparable example is the emergence of Surtsey Island off the coast of Iceland in 1963, when undersea volcanic eruptions reached the surface. That island was declared a United Nations World Heritage Site for its role as a pristine natural laboratory. Even today, access to Surtsey remains restricted to a small number of researchers each year who study the species that have colonized the island over the past 40 years.

According to the USFWS, the Kasatochi study is unique in that it takes place in an isolated marine ecosystem for which there are pre-eruption ecological data for the island and its nearby marine waters, including data from the Alaska Maritime National Wildlife Refuge dating from the mid-1990s and from Sikes' 2008 field work on the island.

This summer's work is funded by the North Pacific Research Board, USGS and USFWS. According to DeGange, it is expected to be the first phase of a long-term ecological study.


Story Source:

The above story is based on materials provided by University of Alaska Fairbanks. Note: Materials may be edited for content and length.


Cite This Page:

University of Alaska Fairbanks. "Rebirth Of An Island After Volcanic Eruption." ScienceDaily. ScienceDaily, 6 January 2010. <www.sciencedaily.com/releases/2009/08/090806170721.htm>.
University of Alaska Fairbanks. (2010, January 6). Rebirth Of An Island After Volcanic Eruption. ScienceDaily. Retrieved October 24, 2014 from www.sciencedaily.com/releases/2009/08/090806170721.htm
University of Alaska Fairbanks. "Rebirth Of An Island After Volcanic Eruption." ScienceDaily. www.sciencedaily.com/releases/2009/08/090806170721.htm (accessed October 24, 2014).

Share This



More Earth & Climate News

Friday, October 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

EU Gets Climate Deal, UK PM Gets Knock

EU Gets Climate Deal, UK PM Gets Knock

Reuters - Business Video Online (Oct. 24, 2014) EU leaders achieve a show of unity by striking a compromise deal on carbon emissions. But David Cameron's bid to push back EU budget contributions gets a slap in the face as the European Commission demands an extra 2bn euros. David Pollard reports. Video provided by Reuters
Powered by NewsLook.com
Deep Sea 'mushroom' Could Be Early Branch on Tree of Life

Deep Sea 'mushroom' Could Be Early Branch on Tree of Life

Reuters - Innovations Video Online (Oct. 24, 2014) Miniature deep sea animals discovered off the Australian coast almost three decades ago are puzzling scientists, who say the organisms have proved impossible to categorise. Academics at the Natural History of Denmark have appealed to the world scientific community for help, saying that further information on Dendrogramma enigmatica and Dendrogramma discoides could answer key evolutionary questions. Jim Drury has more. Video provided by Reuters
Powered by NewsLook.com
Raw: Tornado Rips Roofs in Washington State

Raw: Tornado Rips Roofs in Washington State

AP (Oct. 24, 2014) A rare tornado ripped roofs off buildings, uprooted trees and shattered windows Thursday afternoon in the southwest Washington city of Longview, but there were no reports of injuries. (Oct. 24) Video provided by AP
Powered by NewsLook.com
Dances With Wolves in China's Wild West

Dances With Wolves in China's Wild West

AFP (Oct. 23, 2014) One man is on a mission to boost the population of wolves in China's violence-wracked far west. The animal - symbol of the Uighur minority there - is under threat with a massive human resettlement program in the region. Duration: 00:41 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins