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One of the world’s driest deserts is the focus of a new study on our changing climate

ScienceDaily (September 24, 2020 )

Titre : One of the world’s driest deserts is the focus of a new study on our changing climate

ScienceDaily (September 24, 2020 )

Résumé
Carbon, one of the main building blocks for all life on Earth, cycles among living organisms and the environment. This cycle, and how it works in one of the driest places on Earth, is the subject of a new study.

Descriptif
In an effort to understand what controls the release of carbon dioxide from soils in deserts, Throop and a team of university students from Namibia conducted field work in the Namib Desert, one of the world’s driest regions that stretches more than 1,200 miles along the Atlantic coasts of Angola, Namibia, and South Africa.

What Throop and her team ultimately determined from their research is that subtle differences in surface topography and erosion have big influences on microorganisms in the soil and these differences ultimately affect carbon cycling. Even in the driest places, they found signs of life influencing carbon cycling.

To conduct their analyses, the research team chose six locations that differed in yearly rainfall. At each site they carried out 48-hour sampling campaigns, working continuously day and night to collect data. At each location, the team analyzed the landscape structure and plants and selected representative locations to sample. Then, they simulated rainfall and used gas analyzers to measure carbon dioxide release from soils, to determine how carbon cycling responded as soils dried after the simulated rain.

Story Source  : Arizona State University

Annonce (ScienceDaily)

Annonce (ASU News)

Page publiée le 22 juin 2021