Implications of finding Peraclis spp. in the Holocene sediments of the northeastern Arabian Sea

Spatial distribution of pteropods from North Andaman Sea: Insights into aragonite supply and deposition in low saline, delta shelf regimes

“…Their complete absence from the mouths of the Ayeyarwady indicates intolerance to low salinities. Ambokar et al (2022) have reported that the abundances of both these species peak during cooler periods, indicating a preference for cooler temperatures and higher salinities.…”

A first account of pteropod taxa from off Saurashtra, western offshore of India: Implications for palaeohydrological studies

“…However, the state of preservation of shells of all species is the same throughout the core, and thus is not indicative of paleoenvironmental variations in the study area, if any. Ambokar et al (2022) demonstrated that temporal variation in even minor pteropod taxa effectively recorded past climatic changes. The downcore abundances of the pteropod taxa recovered in the present study should thus hold clues to such palaeoclimatic information given their biological sensitivity.…”

“…For the present study, pteropods were picked out from the sand fraction of a sediment core SK- 240/485 collected at a water depth of 88 m off the shores of Saurashtra, India. The sand fraction was separated using standard and established procedures described in Panchang et al (2007), Panchang and Nigam (2014), Ambokar et al (2022) and several others. The sand fraction obtained was poured on a glass slab and cone-quartered until a representative fraction was obtained for picking pteropods.…”

“…The present study addresses a location on the outer shelf of the western continental shelf of India (Figure 1), which is highly influenced by the freshwater influx received by the Indus, Tapti and Narmada Rivers (Rao & Rao, 1995). Ambokar et al (2022) suggest the continuous influence of fresh water at the core site through 12,000 to 15,000 years BP. Azharuddin et al (2017) suggested that the productivity in this region is influenced by the nutrients sourced from the Indus River.…”

“…Very few quantitative estimates of pteropod flux to the world oceans have been made (Anglada-Ortiz et al, 2021; Bednaršek et al, 2012), which are in turn dependent on the size and weight of taxa, which varies from ocean to ocean. Ambokar et al (2022) for the first time demonstrated the potential of using pteropod taxonomy in paleoclimatic reconstructions underscoring the importance of the species-based, biological sensitivity of pteropods. Whilst shells of different species had the same state of preservation, temporal variation in climatic conditions was reflected by change in the assemblage.…”