Integration of palaeobotanical (spores, pollen, phytoliths and non-pollen palynomorphs) and organic geochemical proxies, such as stable isotopes of organic carbon (δ¹³C) and n-alkanes, for studying the evolution and palaeoenvironmental conditions of an archaeological site are rare in India. The evolution of a protohistoric-historic site at Erenda, situated in the eastern coastal region of India, has been studied by using multiple palaeobotanical and organic geochemical proxies assisted with AMS radiocarbon dates. The excavated site lies above Late Pleistocene–Early Holocene Sijua Formation. The absence of anthropogenic evidence in the Sijua Formation likely indicates inhabitable conditions in nearshore/estuarine marshy conditions. The earliest human settlements at the excavation site begin during the first millennium BCE after the initiation of habitable conditions along the coast. The presence of fungal spores and the dominance of C₄ phytolith morphotypes indicate prevailing warm and humid climatic conditions and proximity to a freshwater body. The δ¹³C signature and n-alkane composition indicate the use of C₄ grass for the construction of the mud and clay-built huts. The settlers most likely used to consume wild or domestic variety of rice, as evidenced by the presence of bilobate scooped morphotypes. The site was partly abandoned, covered with C₃ and C₄ vegetation and used as a dumping ground after 663 ± 92 BCE. This implies that people continued to live in the area but possibly moved to a nearby site while using the excavated site as refuse.

整合古植物（孢子、花粉、植硅体和非花粉孢粉）和有机地球化学指标，例如有机碳 (δ ¹³ C) 和n- 的稳定同位素用于研究考古遗址演化和古环境条件的烷烃在印度很少见。位于印度东部沿海地区的 Erenda 的一个原史-历史遗址的演变已经通过使用多种古植物学和有机地球化学代理以及 AMS 放射性碳日期进行了研究。发掘地点位于晚更新世-早全新世锡华组之上。Sijua 组缺乏人为证据可能表明近岸/河口沼泽条件适合居住。考古发掘现场最早的人类定居点开始于公元前第一个千年，当时沿海可居住条件开始形成。真菌孢子的存在和 C ₄的优势植硅体形态表明盛行的温暖潮湿气候条件和靠近淡水体。δ ¹³ C 特征和正烷烃组成表明使用 C ₄草建造泥土和粘土建造的小屋。定居者最有可能过去食用野生或家养品种的水稻，正如双叶舀状形态的存在所证明的那样。该遗址部分被废弃，被 C ₃和 C ₄植被覆盖，并在公元前 663 ± 92 年后用作垃圾场。这意味着人们继续住在该地区，但可能在将挖掘出的遗址用作垃圾时搬到了附近的遗址。