Bivalve multi-decadal (1981-2021) records of carbon and nitrogen elemental and isotopic ratios (δ13C, δ15N and C:N) of 33 coastal sites of France

bivalves carbon and nitrogen elemental and isotopic ratios (δ13c, δ15n, c and n%, c:n) times series (1981-2021) from 33 sites in france. bivalve species are the pacific oyster crassostrea gigas, and the mussels mytilus edulis and mytilus galloprovincialis. this extensive dataset offers a comprehensive view spanning multiple decades and ecosystems, allowing to track how coastal ecosystems and marine species record changing climate, physical-chemical environments and organic matter cycles. this dataset may also be used to study bivalve physiology. additionally, these data are crucial for establishing isotope baselines for studying food webs. ultimately, this data set provide valuable information for more effective ecosystem conservation and management strategies in our rapidly changing world.

本数据集收录了源自法国33个地点的双壳类动物（太平洋牡蛎Crassostrea gigas、贻贝Mytilus edulis和Mytilus galloprovincialis）的碳和氮元素及同位素比率（δ13C、δ15N、C和N百分比、C:N比率）的时间序列数据（1981-2021年）。该数据集跨越数十年及多个生态系统，为全面了解双壳类动物如何记录气候变化、物理化学环境和有机物质循环提供了宝贵视角。此外，该数据集可用于研究双壳类动物生理学，并在建立同位素基准以研究食物网方面发挥着关键作用。最终，该数据集为在快速变化的世界中实施更为有效的生态系统保护和管理工作策略提供了重要的信息。