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  Monsoon forced evolution of savanna and the spread of agro-pastoralism in peninsular India

Riedel, N., Fuller, D. Q., Marwan, N., Poretschkin, C., Basavaiah, N., Menzel, P., Ratnam, J., Prasad, S., Sachse, D., Sankaran, M., Sarkar, S., Stebich, M. (2021): Monsoon forced evolution of savanna and the spread of agro-pastoralism in peninsular India. - Scientific Reports, 11, 9032.
https://doi.org/10.1038/s41598-021-88550-8

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Riedel, Nils1, Autor
Fuller, Dorian Q.1, Autor
Marwan, Norbert2, Autor              
Poretschkin, Constantin1, Autor
Basavaiah, Nathani1, Autor
Menzel, Philip1, Autor
Ratnam, Jayashree1, Autor
Prasad, Sushma1, Autor
Sachse, Dirk1, Autor
Sankaran, Mahesh1, Autor
Sarkar, Saswati1, Autor
Stebich, Martina1, Autor
Affiliations:
1External Organizations, ou_persistent22              
2Potsdam Institute for Climate Impact Research, Potsdam, ou_persistent13              

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 Zusammenfassung: An unresolved issue in the vegetation ecology of the Indian subcontinent is whether its savannas, characterized by relatively open formations of deciduous trees in C4-grass dominated understories, are natural or anthropogenic. Historically, these ecosystems have widely been regarded as anthropogenic-derived, degraded descendants of deciduous forests. Despite recent work showing that modern savannas in the subcontinent fall within established bioclimatic envelopes of extant savannas elsewhere, the debate persists, at least in part because the regions where savannas occur also have a long history of human presence and habitat modification. Here we show for the first time, using multiple proxies for vegetation, climate and disturbances from high-resolution, well-dated lake sediments from Lonar Crater in peninsular India, that neither anthropogenic impact nor fire regime shifts, but monsoon weakening during the past ~ 6.0 kyr cal. BP, drove the expansion of savanna at the expense of forests in peninsular India. Our results provide unambiguous evidence for a climate-induced origin and spread of the modern savannas of peninsular India at around the mid-Holocene. We further propose that this savannization preceded and drove the introduction of agriculture and development of sedentism in this region, rather than vice-versa as has often been assumed.

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 Datum: 2021-06-012021-06-022021-06-10
 Publikationsstatus: Final veröffentlicht
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 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1038/s41598-021-88550-8
MDB-ID: yes - 3184
PIKDOMAIN: RD4 - Complexity Science
Organisational keyword: RD4 - Complexity Science
Research topic keyword: Adaptation
Research topic keyword: Climate impacts
Research topic keyword: Food & Agriculture
Research topic keyword: Monsoon
Research topic keyword: Paleoclimate
Regional keyword: Asia
Model / method: Nonlinear Data Analysis
OATYPE: Gold Open Access
 Art des Abschluß: -

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Titel: Scientific Reports
Genre der Quelle: Zeitschrift, SCI, Scopus, p3, OA
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Seiten: - Band / Heft: 11 Artikelnummer: 9032 Start- / Endseite: - Identifikator: CoNE: https://publications.pik-potsdam.de/cone/journals/resource/journals2_395
Publisher: Springer Nature