Abstract A 292 cm-long sediment core was collected from the center of Yukashigata Lagoon using a Mackereth air-pressure piston corer. Pollen analysis with radiocarbon dating of this sediment core was conducted to reconstruct the surrounding paleoenvironment. The results revealed a decrease in evergreen broadleaf tree pollen grains. an increase in herb pollen grains and fern spores. https://herbsdailyes.shop/product-category/trimethylglycine-tmg/