Dec 22 2014

Carnivorous Plants Follow the Vegetarian Trend

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Carnivorous plants catch and digest tiny animals in order and derive benefits for their nutrition. Interestingly the trend towards vegetarianism seems to overcome carnivorous plants as well. The aquatic carnivorous bladderwort, which can be found in many lakes and ponds worldwide, does not only gain profit from eating little animals but also by consuming algae and pollen grains. This results in survival in aquatic habitats where prey animals are rare, and in increased fitness if the animals and algae are caught in a well-balanced diet. An Austrian research group around Marianne Koller-Peroutka and Wolfram Adlassnig published these results in the respected journal Annals of Botany.
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Jan 30 2014

Extreme Weather Events Create Uncertain Future for Penguins

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Changes in average climatic conditions combined with the increasing frequency of unpredictable, extreme weather events may disrupt scientific predictions of the future penguin populations, according to a study published in PLOS ONE on January 29, 2014 by Amélie Lescroël from the Centre d'Ecologie Fonctionnelle et Evolutive (CNRS), France and colleagues.
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Nov 17 2013

How studying natural disasters can help us plan for future ones

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Were you one of the many people who got stuck in an airport when the Icelandic volcano Eyjafjallajökull erupted in 2010? It wasn't a major eruption, and it happened a long way from the heart of Europe. But it cost society an absolute fortune by paralysing air traffic across northern Europe. According to Felix Riede, an associate professor of prehistoric archaeology at Aarhus University and the project manager of the Laboratory for Past Disaster Science, global warming and the increasing frequency of natural disasters constitute a huge challenge to modern society, which has a heavy infrastructure and increasing population density. Until now the solutions have involved expensive state intervention and technology-aided approaches, but Riede believes that the past contains a wealth of unexploited resources which could also provide solutions.
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Aug 12 2013

Greenland Ice Sheet is melting from the top and bottom

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New study shows that heat flow from the mantle contributes to the Greenland ice melt The Greenland ice sheet is melting from below, caused by a high heat flow from the mantle into the lithosphere. This influence is very variable spatially and has its origin in an exceptionally thin lithosphere. Consequently, there is an increased heat flow from the mantle and a complex interplay between this geothermal heating and the Greenland ice sheet. The international research initiative IceGeoHeat led by the GFZ German Research Centre for Geosciences establishes in the current online issue of Nature Geoscience (Vol 6, August 11, 2013) that this effect cannot be neglected when modeling the ice sheet as part of a climate study.
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Jul 29 2013

New Study on Permafrost – Climate link

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New research findings from the Centre for Permafrost (CENPERM) at the Department of Geosciences and Natural Resource Management, University of Copenhagen, document that permafrost during thawing may result in a substantial release of carbon dioxide into the atmosphere and that the future water content in the soil is crucial to predict the effect of permafrost thawing. The findings may lead to more accurate climate models in the future. The permafrost is thawing and thus contributes to the release of carbon dioxide and other greenhouse gases into the atmosphere. But the rate at which carbon dioxide is released from permafrost is poorly documented and is one of the most important uncertainties of the current climate models.
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Nov 27 2012

Shrubs help assess history of Glaciers

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The stems of shrubs have given researchers a window into a glacier's past, potentially allowing them to more accurately assess how they're set to change in the future. Their findings have been published today, 27 November, in IOP Publishing's journal Environmental Research Letters, and show how a glacier's history of melting can be extended way past the instrumental record. Much like the rings on a tree stump indicate how old it is, measuring the width of rings on the stem of a shrub can give a good indication of how well it has grown year on year. Under extreme environmental conditions, such as those close to a glacier, a shrub's growth relies heavily on summer temperatures, meaning the ring-width of a shrub can be used a proxy for glacial melting, which also relies heavily on summer temperatures.
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