Icelandic volcano erupts

Nature Newsblog - 3 hours 5 min ago

A volcanic eruption has begun near the caldera of Bárðarbunga, the Icelandic Meteorological Office (IMO) announced on 23 August. Officials have raised the area’s aviation colour code to red, signifying that an “eruption is imminent or in progress.”

All is quiet on the surface above the Bárðarbunga caldera.

Halldór Björnsson/Icelandic Meteorological Office

The eruption is taking place beneath 150 to 400 metres of ice, north and east of the Bárðarbunga caldera. For the past week magma has been rising from the deep and forming a long underground sheet of freshly cooled rock, known as a dyke. The formation of the dyke has been marked by a series of intense earthquakes stretching from Bárðarbunga toward a glacier called Dyngjujökull. (See ‘Icelandic volcano shakes ominously’.)

Scientists from the IMO and the University of Iceland flew over the eruption today and reported no visible signs at the surface. The eruption was likely detected by seismic stations monitoring the region, as the shaking produced when water interacts with magma and turns to steam has a distinctive energy signature. Since the earthquake swarm began on 16 August, Icelandic scientists have been peppering the region with additional seismic and global-positioning instruments to capture just such an event.

Officials have also moved mobile radar observation stations into place around Bárðarbunga, to monitor any plumes if the volcano starts to emit ash. All airports in Iceland remain open, although airspace of approximately 140 by 100 nautical miles (260 by 185 kilometres) has been closed over the eruption site. If the eruption begins to produce ash, the volcanic ash advisory centre responsible for the region may issue an alert. Those alerts can be monitored here.

How the eruption proceeds will depend on how much magma is forcing its way upward and at what rate. The last eruption in Iceland happened in 2011 at the Grímsvötn volcano and was the most powerful in nearly a century. Like this new one, it took place under the Vatnajökull ice cap, and it broke through the ice to spew ash 20 kilometres high. So far, there is no indication that the new eruption will do anything like that, although the interaction of magma and ice is notoriously unpredictable.

Icelandic Meteorological Office

Categories: General, News

New book list, August 20, 2014

Ernst Mayr Library Blog - Thu, 2014-08-21 11:15

Birds and climate change: impacts and conservation responses.
By James W. Pearce-Higgins, Rhys E. Green. Cambridge; New York: Cambridge University Press, 2014. HOLLIS# 014117392
QL698.95.P43 2014

Climate change adaptation in Africa: an historical ecology.
By Gufu Oba. Abingdon, Oxon; New York, NY: Routledge, 2014. HOLLIS# 014117419
SF55.H67 O43 2014

Coastal conservation.
Edited by Brooke Maslo and Julie L. Lockwood, Rutgers University, New Jersey, USA. Cambridge; New York: Cambridge University Press, 2014. HOLLIS# 014117424
QH541.5.C65 C5485 2014

Collaborative partnerships in transboundary wildlife management: a review of southern African experiences.
By Solomon Mombeshora. Harare, Zimbabwe: Regional Office for Southern Africa, IUCN, The World Conservation Union, 2005. HOLLIS# 010205332
SK575.S55 M66 2005

Endangered elephants: past, present, and future: Symposium on Human-Elephant Relationships and Conflicts, Sri Lanka, September 2003.
Editor, Jayantha Jayewardene. Rajagiriya: Biodiversity and Elephant Conservation Trust, 2004. HOLLIS# 010296666
QL737.P98 S98 2004

Fish chemosenses.
Editors, Klaus Reutter, B.G. Kapoor. Enfield, NH: Science Publishers, c2005. HOLLIS# 009795725
QL639.1.F5524 2005

Foundations of fisheries science.
Edited by Greg G. Sass, Micheal S. Allen; section edited by Robert Arlinghaus [and four others]. Bethesda, Maryland: American Fisheries Society, 2014. HOLLIS# 014122140
SH328.F68 2014

Handbook of Western Australian birds. Volume 2: Passerines (Blue-winged Pitta to Goldfinch).
By R.E. Johnstone and G.M. Storr, edited by Deborah Louise Taylor. Perth, W.A.: Western Australian Museum, 1998- . HOLLIS# 007975815
QL693.J655 1998 v. 2

Handbook on the economics of ecosystem services and biodiversity.
Edited by Paulo A.L.D. Nunes, Pushpam Kumar, Tom Dedeurwaerdere. Cheltenham, UK; Northampton, MA, USA: Edward Elgar, [2014]. HOLLIS# 014122147
QH541.15.E25 H25 2014

Indian birds.
By R. K. Gaur. New Delhi: Brijbasi Printers, 1994. HOLLIS# 010296659
QL691.I4 G38 1994

Inseklopedie van Suider-Afrika.
By Erik Holm. Pretoria: LAPA Uitgewers, 2008. HOLLIS# 012041994
QL485.S6 H65 2008

Mamíferos de España.
[By] Juan Carlos Blanco; prólogo de Miguel Delibes de Castro. 1. ed. Barcelona: Planeta, 1998. HOLLIS# 008190988
QL728.S7 B485 1998 v. 1-2

Quantitative genetics in the wild.
Edited by Anne Charmantier, Dany Garant, Loeske E.B. Kruuk. 1st ed. Oxford: Oxford University Press, 2014. HOLLIS# 014122167
QH432.Q36 2014

Rare and endangered plants and animals of Gujarat, February 2003: as part of the Project Conservation of Rare and Endangered Biodiversity of Gujarat.
Vadodara: Gujarat Ecology Society, 2003. HOLLIS# 010296691
QK86.I4 R37 2003

Salmonid spawning habitat in rivers: physical controls, biological responses, and approaches to remediation.
Edited by David A. Sear and Paul DeVries. Bethesda, Md.: American Fisheries Society, 2008. HOLLIS# 012316469
SH167.S18 S3 2008

Shark nursery grounds of the Gulf of Mexico and the East Coast waters of the United States.
Edited by Camilla T. McCandless, Nancy E. Kohler, and Harold L. Pratt, Jr. Bethesda, Md.: American Fisheries Society, 2007. HOLLIS# 012514564
QL638.9.S4537 2007

Spezielle Zoologie. [Teil. 1], Einzeller und wirbellose Tiere.
[Editors], Wilfried Westheide und Reinhard RiegerEinzeller und wirbellose Tiere3rd ed. Berlin; Heidelberg :Springer Spektrum, 2013. HOLLIS# 014137379
QL362.E36 2013 [Teil 1]

Teleosts: evolutionary development, diversity and behavioral ecology.
Skylar Carone, editor. Hauppauge, New York: Nova Science Publisher’s, Inc., [2014]. HOLLIS# 014122188
QL618.2.T45 2014

Wetland conservation in Sri Lanka: proceedings of the National Symposium on Wetland Conservation and Management: June 19th and 20th, 2003, IUCN-The World Conservation Union, Sri Lanka Country Office.

Colombo: IUCN, Sri Lanka, c2004. HOLLIS# 010296670
QH77.S72 N37 2003

Categories: General

How lizards regenerate their tails: researchers discover genetic 'recipe'

Biology News - Wed, 2014-08-20 19:08

The green anole lizard (Anolis carolinensis), when caught by a predator, can lose its tail and then grow it back. By understanding the secret of how lizards regenerate their tails, researchers may be able to develop ways to stimulate the regeneration of limbs in humans. Now, a team of researchers from Arizona State University is one step closer to solving that mystery. The scientists have discovered the genetic "recipe" for lizard tail regeneration, which may come down to using genetic ingredients in just the right mixture and amounts.

Categories: Biology News, General

Signs of deforestation in Brazil

Biology News - Wed, 2014-08-20 19:08

Multiple fires are visible in in this image of the Para and Mato Grosso states of Brazil. Multiple fires are visible in in this image of the Para and Mato Grosso states of Brazil. Many of these were most likely intentionally set in order to deforest the land. Deforestation is the removal of a forest or stand of trees where the land is thereafter converted to a nonforest use. Examples of deforestation include conversion of forestland to farms, ranches, or urban use. The herringbone-patterned tan lines cutting through the dark green of the Amazon Rainforest in the middle of the image are evidence of deforestation in the Brazilian state of Pará. The deforestation in Pará follows the Brazialian national motorway BR 163, passing by cities such as Novo Progresso. The lower half of the image shows the state of Mato Grosso.

Categories: Biology News, General

Pain treatments less effective for those with irritable bowel

Biology News - Wed, 2014-08-20 19:08

University of Adelaide researchers have discovered that the immune system is defective in people suffering from irritable bowel syndrome, which is a major reason why sufferers have ongoing issues with pain.

Categories: Biology News, General
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