Benthic diel oxygen variability and stress as potential drivers for animal diversification in the Neoproterozoic-Palaeozoic.
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| Format: | Artículo científico |
| Sprache: | en |
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Nature communications
2025
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| author | Hammarlund, Emma U Bukkuri, Anuraag Norling, Magnus D Islam, Mazharul Posth, Nicole R Baratchart, Etienne Carroll, Christopher Amend, Sarah R Gatenby, Robert A Pienta, Kenneth J Brown, Joel S Peters, Shanan E Hancke, Kasper |
| author_facet | Hammarlund, Emma U Bukkuri, Anuraag Norling, Magnus D Islam, Mazharul Posth, Nicole R Baratchart, Etienne Carroll, Christopher Amend, Sarah R Gatenby, Robert A Pienta, Kenneth J Brown, Joel S Peters, Shanan E Hancke, Kasper Hammarlund, Emma U Bukkuri, Anuraag Norling, Magnus D Islam, Mazharul Posth, Nicole R Baratchart, Etienne Carroll, Christopher Amend, Sarah R Gatenby, Robert A Pienta, Kenneth J Brown, Joel S Peters, Shanan E Hancke, Kasper |
| collection | PubMed - marine biology |
| contents | Benthic diel oxygen variability and stress as potential drivers for animal diversification in the Neoproterozoic-Palaeozoic. Hammarlund, Emma U Bukkuri, Anuraag Norling, Magnus D Islam, Mazharul Posth, Nicole R Baratchart, Etienne Carroll, Christopher Amend, Sarah R Gatenby, Robert A Pienta, Kenneth J Brown, Joel S Peters, Shanan E Hancke, Kasper Animals Oxygen Geologic Sediments Stress, Physiological Biological Evolution Biodiversity Temperature Adaptation, Physiological Fossils Seawater The delay between the origin of animals in the Neoproterozoic and their Cambrian diversification remains perplexing. Animal diversification mirrors an expansion in marine shelf area under a greenhouse climate, though the extent to which these environmental conditions directly influenced physiology and early organismal ecology remains unclear. Here, we use a biogeochemical model to quantify oxygen dynamics at the sunlit sediment-water interface over day-night (diel) cycles at warm and cold conditions. We find that warm temperatures dictated physiologically stressful diel benthic oxic-anoxic shifts over a nutrient-rich shelf. Under these conditions, a population-and-phenotype model further show that the benefits of efficient cellular oxygen sensing that can offer adaptations to stress outweigh its cost. Since diurnal benthic redox variability would have expanded as continents were flooded in the end-Neoproterozoic and early Palaeozoic, we propose that a combination of physiological stress and ample resources in the benthic environment may have impacted the adaptive radiation of animals tolerant to oxygen fluctuations. |
| format | Artículo científico |
| id | pubmed_40118825 |
| institution | PubMed |
| language | en |
| publishDate | 2025 |
| publisher | Nature communications |
| record_format | pubmed |
| spellingShingle | Benthic diel oxygen variability and stress as potential drivers for animal diversification in the Neoproterozoic-Palaeozoic. Hammarlund, Emma U Bukkuri, Anuraag Norling, Magnus D Islam, Mazharul Posth, Nicole R Baratchart, Etienne Carroll, Christopher Amend, Sarah R Gatenby, Robert A Pienta, Kenneth J Brown, Joel S Peters, Shanan E Hancke, Kasper Animals Oxygen Geologic Sediments Stress, Physiological Biological Evolution Biodiversity Temperature Adaptation, Physiological Fossils Seawater Benthic diel oxygen variability and stress as potential drivers for animal diversification in the Neoproterozoic-Palaeozoic. Hammarlund, Emma U Bukkuri, Anuraag Norling, Magnus D Islam, Mazharul Posth, Nicole R Baratchart, Etienne Carroll, Christopher Amend, Sarah R Gatenby, Robert A Pienta, Kenneth J Brown, Joel S Peters, Shanan E Hancke, Kasper Animals Oxygen Geologic Sediments Stress, Physiological Biological Evolution Biodiversity Temperature Adaptation, Physiological Fossils Seawater The delay between the origin of animals in the Neoproterozoic and their Cambrian diversification remains perplexing. Animal diversification mirrors an expansion in marine shelf area under a greenhouse climate, though the extent to which these environmental conditions directly influenced physiology and early organismal ecology remains unclear. Here, we use a biogeochemical model to quantify oxygen dynamics at the sunlit sediment-water interface over day-night (diel) cycles at warm and cold conditions. We find that warm temperatures dictated physiologically stressful diel benthic oxic-anoxic shifts over a nutrient-rich shelf. Under these conditions, a population-and-phenotype model further show that the benefits of efficient cellular oxygen sensing that can offer adaptations to stress outweigh its cost. Since diurnal benthic redox variability would have expanded as continents were flooded in the end-Neoproterozoic and early Palaeozoic, we propose that a combination of physiological stress and ample resources in the benthic environment may have impacted the adaptive radiation of animals tolerant to oxygen fluctuations. |
| title | Benthic diel oxygen variability and stress as potential drivers for animal diversification in the Neoproterozoic-Palaeozoic. |
| topic | Animals Oxygen Geologic Sediments Stress, Physiological Biological Evolution Biodiversity Temperature Adaptation, Physiological Fossils Seawater |
| url | https://pubmed.ncbi.nlm.nih.gov/40118825/ |