Whitepaper: Earth – Evolution at the dry limit
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| Title: | Main Title: Whitepaper: Earth – Evolution at the dry limit |
| Description: | Abstract: At the land surface, the availability of water controls the evolution of life as well as the morphological development. It is currently hardly known how far both evolutionary processes interact in water-limited environments. While it is well considered that biotic processes contribute to weathering and therewith also prepare the landscape for erosion, little is known to what degree different landforms form barriers and corridors of life across geological time scales. Here, we present an example of how to tackle this complex interplay of biology and landscape evolution by introducing the Collaborative Research Centre CRC 1211 ‘Earth – Evolution at the dry limit’. A CRC is a German Research Foundation funding program, bringing together scientists from different disciplines to tackle jointly complex emergent research questions for up to twelve years. The CRC 1211 focuses on the arid cores of the Atacama Desert and the Namib Desert. Main objective is to disentangle how the shaping of land-surfaces by past episodes of wetter climate coevolved with the evolution of life. It is hypothesized that aridity was interrupted by punctuated wetter periods, which left fingerprints in surface processes and the radiation of the biota, with climatic thresholds beyond which biota could adapt to and influence landscape development. Specific desert landscape elements such as soil surface crusts, desiccation cracks and subsoil water potentially form underexplored refugia of life at particular sites, while old channels and alluvial fan systems potentially structure its dispersal at small to intermediate scales (< 100 m2), In addition, there are large-scale (> 10,000 km2) gradients in surface processes and biodiversity, likely controlled by the intensity and duration of fog or rainfall. To substantiate these hypotheses we combine expertise from the fields of population and (phylo-) genetics, molecular biology, biogeography, ecology, soil sciences, Earth-surface sciences, geomorphology, meteorology, (paleo-) climatology, (isotope-) geochemistry and physical dating to discover and evaluate the trajectories and thresholds of the evolution and isolation of life. While presenting here our current research strategy, we invite scientists from all over the world to link their research on related questions for the joint development of a global picture on how evolution of life was triggered and regulated by land-surface processes. |
Responsible Party
| Creators: | Tibor Dunai (Author), Martin Melles (Author), Dietmar Quandt (Author), Claudia Knief (Author), Wulf Amelung (Author) |
| Publisher: | Global and Planetary Change |
| Publication Year: | 2021 |
Topic
| CRC1211 Topic: | Climate |
| Related Subprojects: | D1, Z1 |
| Subjects: | Keywords: Geomorphology, Paleoclimate Proxies, Biodiversity |
File Details
| Filename: | DunaiWhitePaper2020.pdf |
| Data Type: | Data Paper - Publication |
| File Size: | 2.9 MB |
| Date: | Accepted: 20.07.2021 |
| Mime Type: | application/pdf |
| Data Format: | |
| Language: | English |
| Status: | Completed |
Constraints
| Download Permission: | Free |
| General Access and Use Conditions: | According to the CRC1211DB data policy agreement. |
| Access Limitations: | According to the CRC1211DB data policy agreement. |
| Licence: | [CRC1211DB] Data policy agreement |
Geographic
Specific Information - Publication
| Publication Status: | Accepted |
| Review Status: | Peer reviewed |
| Publication Type: | Article |
| Article Type: | Journal |
| Source: | Global and Planetary Change |
| Source Website: | Global and Planetary Change |
| Issue: | 193 |
| Volume: | 193 |
| Number of Pages: | 2 (193 - 194) |
Metadata Details
| Metadata Creator: | Benedikt Ritter |
| Metadata Created: | 16.07.2021 |
| Metadata Last Updated: | 16.07.2021 |
| Subproject: | D1 |
| Funding Phase: | 1 |
| Metadata Language: | English |
| Metadata Version: | V50 |
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Dataset Statistics
| Page Visits: | 240 |
| Metadata Downloads: | 0 |
| Dataset Downloads: | 12 |
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Adequate reference when this dataset will be discussed or used in any publication or presentation is mandatory. In this case please contact the dataset creator.
