Ancient Grasslands: Irreversible Change from Plowing
New research indicates that ancient grasslands, once converted to farmland or urban development, cannot fully recover their original ecological complexity even after decades of restoration. These ecosystems are vital for carbon storage, erosion control, and biodiversity.
Why it matters
Understanding the permanent loss of grassland functionality is critical for global conservation efforts and climate change mitigation strategies.
When a 10,000-year-old prairie is plowed up to plant corn or a savanna is consumed by a strip mall, these once-grassy expanses, if left to regrow, can eventually look vaguely like they did before.
But a growing body of research suggests that what comes back isn't the same as what was lost, even decades later. And now scientists are starting to understand why.
That's the takeaway of a new study of grasslands worldwide published in the journal Proceedings of the National Academy of Sciences.
The results are important because grasslands are more than just treeless expanses.
They can look barren to the untrained eye, but they have extensive underground roots that reduce water runoff, control erosion , and store a third of Earth's terrestrial carbon.
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