Geochemical signatures of Late Holocene paleo-hydrological changes from Phulera and Pokharan saline playas near the eastern and western margins of the Thar Desert, India

Roy, Priyadarsi D.; Nagar, Y.C.; Juyal, Navin; Smykatz-Kloss, Werner; Singhvi, A. K.

doi:10.1016/j.jseaes.2008.05.006

Cited by 40 publications

(39 citation statements)

References 38 publications

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“…Clay mineralogy data obtained on the Rann sediment near Shakti Bet shows consistently high values of illite followed by chlorite, suggesting the Indus River/Himalaya source. onset of regional aridity (climatically induced) in western, central and southern India (Kale, 1999;Thomas et al, 2007;Roy et al, 2008), or abrupt due to the land-level change caused by an earthquake. At this stage, due to limited data, it is difficult to ascertain the relative contribution of either of the two factors in the withdrawal of subtidal environment from the western Great Rann.…”

Section: Discussionmentioning

confidence: 99%

Mid-Holocene sedimentation and landscape evolution in the western Great Rann of Kachchh, India

et al. 2012

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Section: Discussionmentioning

confidence: 99%

Mid-Holocene sedimentation and landscape evolution in the western Great Rann of Kachchh, India

et al. 2012

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“…9). Pokhara Playa, also in the Thar Desert of Northwest India registered a high rainfall regime between 4000 and 2300 cal yr BP and low rainfall conditions between 2300 and 1100 cal yr BP (Roy et al, 2009). The rainfall history reconstructed from the two Thar Desert lakes (Fig.…”

Section: Paleoclimatic and Paleoenvironmental Interpretationmentioning

confidence: 96%

Holocene environmental changes in northeast Thailand as reconstructed from a tropical wetland

Wohlfarth

Klubseang

Inthongkaew

et al. 2012

Global and Planetary Change

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“…Several studies on mid-to late-Holocene precipitation trends in the arid and semi-arid zones of Western India suggest a shift from mesic to arid conditions after ~3000 cal yr BP (Singh et al, 1974;Prasad et al, 1997;Roy et al, 2009;Prasad et al, 2014b;Banerji et al, 2015). Evidence from carbon isotopes of sedimentary leaf waxes from Godavari river catchment in central India also suggests that there was a consistent increase in aridity from ~4000 cal yr BP towards the present (Ponton et al, 2012).…”

Section: Regional Comparisons Of Climate Data Through the Holocenementioning

confidence: 99%

“…However, such climatic shifts are spatially and temporally variable across the region (Singh et al, 1974;Prasad et al, 1997;Enzel et al, 1999;Prasad and Enzel, 2006;Roy et al, 2009;Laskar et al, 2013;Prasad et al, 2014b). Further, archaeological studies suggest qualitative links between livelihood activities of human settlements and local environments through the Holocene (Possehl, 1999(Possehl, , 2002Madella and Fuller, 2006).…”

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confidence: 99%

Mid-late Holocene vegetation response to climatic drivers and biotic disturbances in the Banni grasslands of western India

Pillai

Anoop

Sankaran

et al. 2017

Palaeogeography, Palaeoclimatology, Palaeoecology

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Citation:Pillai AAS, Anoop A, Sankaran M, Sanyal P, Jha DK and Ratnam J (2017) AbstractTropical grasslands and savannas are globally extensive, and are of significant environmental, economic, and ecological importance. These ecosystems are anticipated to be particularly sensitive to future changes in climate, and understanding how these systems have responded to climatic changes in the past can provide us with insights into their potential responses to future global change. In this study, the temporal dynamics of C3-C4 vegetation changes in response to changes in moisture availability, local fire events and changing levels of herbivory in a summer-rainfall region of Western India are reconstructed for the past ~4600 cal yr BP. Paleodata such as stable carbon isotope of bulk organic matter ( 13 Corg), oxygen isotope from carbonate shells ( 18 Oshell), macro-charcoal and herbivore dung fungal spores are reported from the retrieved cores of two wetland sites located in the Banni grasslands of Western India. Results show that vegetation in the Banni was composed mostly of C3 vegetation from ~4600 to ~2500 cal yr BP, after which there was a decline in C3vegetation. From the late-Holocene to the present, there was a mix of both C3 and C4 vegetation, with C4 grasses being more abundant in the ecosystem. These shifts were coincident with rainfall changes from more mesic conditions during ~4600 to ~2500 cal yr BP to more arid conditions towards the present as indicated by 18 Oshell isotope data. The period of increase in C4 vegetation also coincides with a period of increased biotic disturbances in the ecosystem, particularly fire. Given the current scenarios of global warming, recurrent drought events and increased anthropogenic use of similar ecosystems, such studies can provide us insights into potential future trajectories of these ecosystems.3

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Geochemical signatures of Late Holocene paleo-hydrological changes from Phulera and Pokharan saline playas near the eastern and western margins of the Thar Desert, India

Cited by 40 publications

References 38 publications

Mid-Holocene sedimentation and landscape evolution in the western Great Rann of Kachchh, India

Mid-Holocene sedimentation and landscape evolution in the western Great Rann of Kachchh, India

Holocene environmental changes in northeast Thailand as reconstructed from a tropical wetland

Mid-late Holocene vegetation response to climatic drivers and biotic disturbances in the Banni grasslands of western India

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