Palynological analysis of surface soil and sub-surface sediments from the outwash plain Hamtah Glacier, Lahaul-Spiti, India, has brought out vegetation climatic changes in area during last 1580 years. The arboreal non-arboreal pollen ratio (AP/NAP) been used to demarcate different zones, complemented by frequencies broad-leaved taxa. Lower values thermophilous, taxa, indicate that region experienced cold-arid conditions between 1330 yr BP (AD 370–620); which can be related Dark Ages Cold...

Modern pollen dispersal studies from the phytogeographically and climatically different regions [the Peninsular extra-Peninsular (the Himalaya), Ganga-Brahmaputra Plain coastal regions] of India are summarised reviewed in present communication. We have incorporated all works undertaken on modern aspects India. It must be noted that initial studies, though incipient nature content, helped establishing science palynology, early days, across varied vast country. Shorea robusta Tectona grandis,...

Pollen analysis and radiocarbon dating of a 1.4 m deep lacustrine sediment profile from Chhattisgarh State, central India, in the core monsoon zone (CMZ), has revealed vegetation history, associated climate change Indian Summer Monsoon (ISM) rainfall variability during Late-Holocene. The pollen evidence suggests that between ca. 3000 2600 cal year BP, tree-savannah occurred region having comparatively lesser rainfall. forest expanded culminated into an open-mixed tropical deciduous 2200 BP...

Interpretation of past vegetation using pollen analysis depends on our understanding about the relationship between modern and surface assemblages. In present study, we sampled pollen-rain in a mixed environment cultivated land dry wet tropical forests central India. We established to which extent types are reflected explained biases spectra. Our study revealed that assemblages do not fully represent extant regional vegetation, as many forest components, especially trees shrubs, either...

The Tripura fold-thrust belt is located at the eastern fringes of Bengal basin, which also part Himalayan foreland basin. It considered situated outer wedges deformation front Indo-Burmese ranges, Himalayas. has been developed due to oblique collision Indian, Eurasian, and Burmese micro-plates over past 2 million years, leading new antifomal ridges in western region. comprises a series N-S trending narrow antiformal separated by wide synformal valleys. In North East Tripura, major rivers...

In the northern part of India, 900-km long Gomati River drains central Ganga Alluvial Plain and transports its water sediments to River, one world’s largest fluvial system. The basin experiences a humid, sub-tropical climate characterised with monsoon season heavy precipitation. distal river basin, hydrological data were collected from Maighat gauging station located at Chandwak for present stage-discharge relationship study. With increasing fresh demands ever growing human population in...

Quaternary palaeoclimatic studies in India, with reference to palynology, commenced the early part of twentieth century. Sporadic continued until 1940s. A watershed palynological research country occurred late 1940s, primarily inception Birbal Sahni Institute Palaeobotany (recently renamed Palaeosciences). Since then, other academic centres and universities have also steadily contributed augmenting India. Preliminary studies, though seemingly rudimentary, nonetheless helped expansion...

A palynological assay of the studies carried out from Western and Eastern Himalaya (India) during Late Pleistocene Holocene is presented here.The affected by both Indian Summer Monsoon (ISM) Disturbances, whereas receives precipitation only ISM.During (~77 ka), a cold arid climate supported steppe vegetation in Himalaya.In Himalaya, around 66 ka, cool dry savannah with few scattered trees Pinus Tsuga.A number warm-moist fluctuations are also perceptible Pleistocene.The impacts Last Glacial...

Thirty-five surface sediment samples from three glacial sites – [Chorabari Glacier (Kedarnath), Hamtah and Chhatru glaciers (Lahaul-Spiti)] situated in the western Himalaya, India, were palynologically analysed to explore relationship between modern pollen assemblages extant vegetation. The Chorabari is located Greater Himalaya influenced by Southwest Summer Monsoon; whereas are Trans-Himalaya affected more Western Disturbances (winter precipitation). area around receives abundant rainfall,...

Palynology is one of the most reliable tools for reconstruction past vegetation and climate modern pollen analogues are important calibration fossil assemblages. The present study analyses pollen–vegetation relationships along a steep altitudinal gradient (2700–3680 m), in western Higher Himalayan region. On basis altitude, three zones were demarcated: Zone I (2700–3100 m) composed mixed-temperate forest vegetation, dominated by Quercus semecarpifolia Rhododendron arboreum; II (3100–3250...

Plant pathogens Colletotrichum causing leaf spot and red rot disease, Erysiphe Uncinula responsible for producing powdery mildews microthyriaceous ascostromata making black on leaves were recovered from the Group A type of coprolite Matley Lameta Formation. This was supposed to be voided by Isisaurus (Titanosaurus) belonging sauropods. The presence these fungi in coprolites indicates that said dinosaur ate leaves. As occur all types plants it is postulated used its long, slender neck browse...

Disc-like galls are reported on the Triassic corystosperm leaf Dicroidium hughesii (Feistmantel) Lele from Parsora Formation of South Rewa Gondwana Basin, central India. Although there have been numerous reports arthropod–plant interactions Permian and Lower Cretaceous successions, this is first unequivocal report succession Peninsular The new record adds to global evidence that arthropod herbivory gall formation, in particular, had rediversified by Late wake end-Permian mass extinction.

Pollen assemblages provide valuable insights into the beginning of cereal-based agricultural practices and transition from a hunting gathering to sedentary food-producing way life. Anthropogenic pollen indicators (APIs) their precise identification, with respect taxonomic resolution, can help document history development, pastoral activities human-induced land-use changes, particularly for Holocene Epoch. Moreover, careful selection types, and/or indices, established particular region, are...

Abstract Eighteen sediment samples from a 36 cm long core retrieved proglacial lake (namely P 11) situated in the Schirmacher Oasis, East Antarctica, were analysed for study of quartz grain morphology and microtexture, along with sand percentage, to reconstruct paleoenvironmental changes during Holocene. The age ranges 3.3 ka BP 13.9 BP. microtexture reveal significant evidences glacial transport some eolian aqueous activities. On basis predominance these signatures zonation CONISS Cluster...