A couple of Chinstrap penguins (Pygoscelis antarctica) at their nesting site on Deception Island, maritime Antarctica. Sea birds contribute importantly to biogeochemical cycles in coastal ecosystems and on islands. Feeding on the marine food chain and nesting on land, they carry large amounts of marine nutrients into terrestrial ecosystems. This might be of particular importance …[Read More]
Biogeosciences
Imaggeo on Mondays: Patterns in the peatland
This magnificent pattern is the result of hundreds and hundreds of years of evolution. In this structured minerotrophic peatland in Northern Quebec (Canada), which can also be called a string fen or aapa mire, the green peat ridges (or strings) alternate with water-filled hollows (or flarks). Often flarks are replaced by ponds, which vary in …[Read More]
Geosciences Column: Using volcanoes to study carbon emissions’ long-term environmental effect
In a world where carbon dioxide levels are rapidly rising, how do you study the long-term effect of carbon emissions? To answer this question, some scientists have turned to Mammoth Mountain, a volcano in California that’s been releasing carbon dioxide for years. Recently, a team of researchers found that this volcanic ecosystem could give clues …[Read More]
Imaggeo on Mondays: The best of imaggeo in 2018
Imaggeo, our open access image repository, is packed with beautiful images showcasing the best of the Earth, space and planetary sciences. Throughout the year we use the photographs submitted to the repository to illustrate our social media and blog posts. For the past few years we’ve celebrated the end of the year by rounding-up some …[Read More]
Looking back at the EGU Blogs in 2018: a competition
The past 12 months has seen an impressive 382 posts published across the EGU’s official blog, GeoLog, as well as the network and division blogs. From an Easter-themed post on the convection of eggs, features on mental health in academia, commentary on the pros and cons of artificial coral reefs, advice on presenting research at conferences, through to a three-part “live-series” on …[Read More]
GeoPolicy: the EU’s Bioeconomy Strategy – what is it and how is it linked with geoscience?
What is the bioeconomy? Global threats such as climate change, ocean acidification, land degradation and an ever-expanding population means that it’s essential for us to reduce our environmental impact while still meetings our demand for food, resources and energy. The bioeconomy covers all sectors and systems that rely on biological resources and their functions including renewable …[Read More]
Imaggeo on Mondays: The ancient guard of Altai
In the heart of Eurasia, an ancient stone statue overlooks the expanse of the Kurai Valley and the Altai Mountains in Russia. This relic was crafted more than a thousand years ago, sometime during the 6th or 7th century. A Turkish clan that inhabited the region, known as the First Turkic Khaganat, would often erect …[Read More]
Imaggeo on Mondays: Bristlecone pines, some of Earth’s oldest living life forms
About 5,000 years ago, the ancient city Troy was founded, Stonehenge was under construction, and in the rugged Sierra Nevada mountain range, groves of bristlecone pine seedlings began to take root. Many of these pines are still alive today, making them the world’s oldest known living non-clonal life forms. Raphael Knevels, a PhD student from …[Read More]
Imaggeo on Mondays: Namibia’s mysterious fairy circles
The grassy Namibian desert is pock-marked with millions of circular patches of bare earth just like these shown in the picture between linear dunes. Viewed from a balloon, they make the ground look like a moonscape. Commonly known as fairy circles, the patches range from two to 12 metres across and appear in a 2000 …[Read More]
Imaggeo on Mondays: Arctic cottongrass in Svalbard
In the High Arctic, where vegetation is limited in height, cottongrass stands out as some of the tallest plant species around. This photo shows a wispy white patch of Arctic cottongrass growing amongst other tundra vegetation in the Advent river floodplain of Adventdalen, a valley on the Norwegian archipelago island Svalbard. Svalbard is of particular …[Read More]