Tropical riverbank ecosystems – what can be seen along rivers and wetlands – have now recovered within just two million years of North China's extinction. Terrestrial ecosystem.
An illustration depicting the beginning of the mass extinction of the Endopermians. Image credits: Dawid Adam Iurino/Paleofactory, Sapienza Rome University of Rome/Jurikova et aldoi: 10.1038/s41561-020-00646-4.
The mass extinction of the Endopermians occurred about 252 million years ago, and due to extreme environmental changes such as global warming, ocean acidification and long-term drought, more than 80% of marine species and 70% of terrestrial species. I've cleared up all of that.
Dr. Li Tian, ​​a researcher at the China University of Earth Sciences, said:
“It has long been theorized that low-latitude land areas remained uninhabited for a long period of time, 7-10 million years after extinction, but our results suggest that some ecosystems have previously been considered. It suggests it's more adaptable than it was.”
To reconstruct the timeline of ecosystem recovery on the land, Dr. Tian and colleagues analyzed trace fossils (such as burrows and footprints), plant relics, plant relics, and vertebrate fossils . 247 million years ago.
These fossils were obtained from lake and river deposits in central central China.
Researchers used a combination of techniques such as biostratigraphy, biology (studying microfossils), sedimentology, and geochemical analysis.
Their research suggests harsh environments at the beginning of the early Triassic period, with only sparse and simple living remaining.
Fossils of this era represent monospecific communities. This means that there is little evidence of biodiversity, and only a single type of organism dominates.
Fossils showed a significant decrease in biological size compared to before the end of Permian, a common indicator of extreme environmental stress.
However, fossils from the Spacyan stage (approximately 249 million years ago) show increased plant stems, root traces, and signs of piercing activity, suggesting a more stable and structured environment .
Scientists also discovered fossils of medium-sized carnivorous vertebrates, indicating that a multi-level food web was established at this stage.
The revival of the action that dug a hole that was largely vanished after the events of extinction was a significant discovery.
Hole-digging behavior promotes sediment and plays an important role in cycling nutrients in riverbank ecosystems, suggesting that animals adapted to environmental stress by escaping underground during this period. Masu.
The findings challenge the view that ecosystem recovery on post-extinction lands is far behind marine life, and that some ecosystems are already stable within relatively short geological time frames. It is revealed.
“Our research is the first to suggest that, contrary to past assumptions, life in the tropical House of Representatives' riparian ecosystems has recovered relatively quickly after the mass extinction of Permians,” said Jinnan. Dr. Tong also spoke from China's University of Earth Sciences.
“The fossil records we studied suggest that riparian zones played an important role in stabilizing post-extinction ecosystems.”
“The rivers and wetlands served as shelters, providing more stable conditions and more stable conditions, allowing life to rebound faster than in arid inland areas.”
Team's paper Published online in the journal Elif.
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Wenwei Guo et al. 2025. Following the mass extinction of Permians, rapid recovery of riparian ecosystems in the hypoxic environment of northern China. Elif 14: RP104205; doi: 10.7554/Elife.104205.1
Source: www.sci.news
