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Data from: Genomic reconstruction of 100 000-year grassland history in a forested country: population dynamics of specialist forbs

Citation

Yamaura, Yuichi et al. (2019), Data from: Genomic reconstruction of 100 000-year grassland history in a forested country: population dynamics of specialist forbs, Dryad, Dataset, https://doi.org/10.5061/dryad.f32p4

Abstract

Grassland ecosystems worldwide have been extensively converted to other land uses and are globally imperiled. Because many grasslands have been maintained by human activities, understanding their origin and history is fundamentally important to better contemporary management. However, existing methods to reconstruct past vegetation can produce contrasting views on grassland history. Here, we inferred demographic histories of 40 populations of four grassland forb species throughout Japan using high-resolution genome sequences and model-flexible demographic simulation based on the site frequency spectrum. Although two species showed a slight decline in population size between 100 000–10 000 years ago, our results suggest that population sizes of studied species have been maintained within the range of 0.5–2.0 times the most recent estimates for at least 100 000 years across Japan. Our results suggest that greater than 90% declines in Japanese grasslands and subsequent losses of grassland species in the last 100 years are geologically and biologically important and will have substantial consequences for Japanese biota and culture. People have had critical roles in maintaining disturbance-dependent grassland ecosystems and biota in this warm and wet forested country. In these contexts, disturbances associated with forest harvesting and traditional extensive farming have the potential to maintain grassland ecosystems and can provide important opportunities to reconcile resource production and conservation of grassland biodiversity.

Usage Notes

Location

141E
131E
142E
143E
133E
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134E
RAD-seq raw reads Patrinia_site7-2
135E
136E
137E
39N
38N
36N
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140E
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40N
138E
139E