A comprehensive calibrated phytolith based climatic index from the Himalaya and its application in palaeotemperature reconstruction

Biswas, Oindrila; Ghosh, Ruby; Agrawal, Shailesh; Morthekai, P.; Paruya, Dipak Kumar; Mukherjee, B. P.; Bera, Mahua; Bera, Suman

doi:10.1016/j.scitotenv.2020.142280

Cited by 19 publications

(13 citation statements)

References 79 publications

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“…It is worth mentioning that in the Himalayan grasses BIL, CRO, SAD, SAD_TAL, SAD_COL, TRZ, and RON types show significant elevational trends 50 , 51 . The BIL, CRO, and SAD types are predominant in the grasses of the tropical and sub-tropical zones, while the TRZ and RON types are dominant within the grasses of the sub-tropical/temperate zone and upwards.…”

Section: Discussionmentioning

confidence: 99%

“…Based on the analysis of the modern Bambusoideae phytolith it is apparent that there is wide variability in the phytolith production patterns within the Bambusoideae. No ‘diagnostic morphotype’ or ‘assemblages’ could be ascertained for this sub-family 50 , 51 due to the high diversity and redundancy of the morphotypes present in the dung samples. The redundancy of grass phytolith types among different taxa also limits the identification of the most preferred bamboo taxa in the diet of the red panda.…”

Section: Discussionmentioning

confidence: 99%

“…The BIL, CRO, and SAD types are predominant in the grasses of the tropical and sub-tropical zones, while the TRZ and RON types are dominant within the grasses of the sub-tropical/temperate zone and upwards. Phytolith types such as SAD_TAL and SAD_COL are most dominant in temperate zones but decline at higher elevations 50 , 51 . A seasonal trend has also been also noticed for these phytolith types retrieved in the feces samples.…”

Section: Discussionmentioning

confidence: 99%

“…The phytolith production patterns of Y . maling, T. spathiflorus , and A. racemosa have been considered in previous publications on the modern grass phytolith spectra from the eastern Himalaya 50 , 51 .. However, the phytolith production pattern of Himalayacalamus sp.…”

Section: Methodsmentioning

confidence: 99%

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Red Panda feces from Eastern Himalaya as a modern analogue for palaeodietary and palaeoecological analyses

Basumatary

Gogoi

Tripathi

et al. 2021

Sci Rep

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Modern feces samples of the endangered red panda (Ailurus fulgens) were examined using multiproxy analysis to characterize the dietary patterns in their natural habitat in India. An abundance of Bambusoideae phytoliths and leaves (macrobotanical remains) provide direct evidence of their primary dietary plants. In contrast, Bambusoideae pollen is sporadic or absent in the pollen assemblages. An abundance of Lepisorus spores and its leaves along with broadleaved taxa, Betula, Engelhardtia, and Quercus are indicative of other important food sources. Average δ13C values (− 29.6‰) of the red panda feces indicate typical C3 type of plants as the primary food source, while the, δ15N values vary in narrow range (3.3–5.1‰) but conspicuously reveal a seasonal difference in values most likely due to differing metabolic activities in summer and winter. The multiproxy data can provide a baseline for the reconstruction of the palaeodietary and palaeoecology of extinct herbivores at both regional and global scales.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Red Panda feces from Eastern Himalaya as a modern analogue for palaeodietary and palaeoecological analyses

Basumatary

Gogoi

Tripathi

et al. 2021

Sci Rep

Self Cite

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“…Extratropical trees produce only a small amount of diagnostic phytoliths (e.g., Wang and Lu, 1993 ; Lu et al, 2006 ), and arboreal species from subtropical and temperate zones produce similar diagnostic types (e.g., Wang and Lu, 1993 ; Lu et al, 2006 ; Gao et al, 2018 ; Wen et al, 2018 ). Consequently, in extratropical forests where open-habitat grasses are absent or uncommon, very few topsoil-based phytolith–vegetation relationship calibrations are available (e.g., An et al, 2015 ; Dunn et al, 2015 ; Biswas et al, 2021 ; Pei et al, 2021 ), underscoring that extratropical region-specific calibration is still of great importance for future global dataset comparisons.…”

Section: Introductionmentioning

confidence: 99%

Phytolith Assemblages as a Promising Tool for Quantitative Canopy Coverage Reconstruction in Subtropical Forests, China

Sack

et al. 2022

Front. Plant Sci.

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This study investigates the reliability of phytolith assemblage analysis for characterizing subtropical vegetation and explores the potential for using these modern phytolith–vegetation relationships for paleoenvironmental interpretation in southeastern China. The samples were collected from five common subtropical vegetation communities in the Daiyun Mountains, southeastern China, with the above-ground vegetation recorded at each plot. Constrained ordination analysis was used to determine the most important factor governing the variations in phytolith assemblages that could be quantitatively reconstructed with weighted averaging partial least squares regression (WAPLS). The relationship between modern phytolith assemblages and the parent vegetation, as well as production, dispersal, and taphonomic processes, was discussed. Results demonstrated that the main subtropical biomes in southeastern China could be well distinguished by soil phytolith assemblages. In particular, the overall amount of tree coverage was well represented by topsoil phytolith assemblages. Grass silica short cell phytoliths (GSSCP) tended to occur in higher proportions in open habitats (shrub-meadow) at higher elevations, whereas non-grass phytolith morphotypes attained higher frequencies under mixed and broadleaf forests at lower elevations. Human-induced deforestation might increase the frequency of GSSCP within the bulk phytolith assemblage. Our results constitute the primary phytolith reference data for the subtropical zone in southeastern Asia where vegetation change during the Holocene period, particularly forest shifts, anthropogenic deforestation, and early agriculture are poorly documented.

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Decoding Ancient Vegetation and Environment Using Potsherd Palynology: A Case Study from an Archaeological Site of Deltaic West Bengal, India

Biswas,

Paruya,

Saradar

et al. 2024

Society of Earth Scientists Series

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A comprehensive calibrated phytolith based climatic index from the Himalaya and its application in palaeotemperature reconstruction

Cited by 19 publications

References 79 publications

Red Panda feces from Eastern Himalaya as a modern analogue for palaeodietary and palaeoecological analyses

Red Panda feces from Eastern Himalaya as a modern analogue for palaeodietary and palaeoecological analyses

Phytolith Assemblages as a Promising Tool for Quantitative Canopy Coverage Reconstruction in Subtropical Forests, China

Decoding Ancient Vegetation and Environment Using Potsherd Palynology: A Case Study from an Archaeological Site of Deltaic West Bengal, India

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