GeoLog

soil

Soil bacteria that hunt like a wolfpack? Myxobacteria and their role in the food web

A photo of a wolf in the middle and four microscopic images of colourful bacterial cultures around it.

Picture this: bacteria that can slime their way around the soil, finding their prey, circling it, closing in on it and lysing it (or making their cell pop), just to feed on their prey. It sounds like a far stretch from a wolf to a bacteria, but even other soil predators, the comparably huge nematode worms ( up to 100 times bigger!), are afraid of these bacterial “wolves”. I went to the Soil System ...[Read More]

Don’t leaf it to the trees: Amazonian soils also work to store carbon.

Don’t leaf it to the trees: Amazonian soils also work to store carbon.

The Amazon rainforest covers an area of 5.5 million km² and is well known for being an invaluable global resource for carbon storage. But it’s not just the trees and vegetation of the Amazonian rainforest that lock in and store carbon – the very soil in these forests can do the same thing, according to research published in EGU’s journal SOIL earlier this year. In this study Carlos Alberto Quesada ...[Read More]

Epic Journeys: New insights into wildlife and human migrations

Epic Journeys: New insights into wildlife and human migrations

Many wild animals make extraordinary long-distance journeys, whether by land, by air or even by sea. Ancestral, and even some modern, humans have likewise undertaken equally impressive odysseys across and between continents. In order to highlight these “epic journeys,” four different research projects were presented during an EGU press conference held on Wednesday. During the virtual presentations ...[Read More]

Imaggeo on Mondays: Rocks weather, soil takes form

Imaggeo on Mondays: Rocks weather, soil takes form

This image depicts the soil formation, that is weathering of rock. Soil is actually formed by weathering of rock by physical, chemical and biological methods. This image depicts physical and biological weathering. Physical weathering by the action of temperature and biological weathering by the growth of some species of grass through the cracks. Image clicked from Trivandrum district of Kerala, In ...[Read More]