鹿角菜是一种具有重要生态功能和经济价值的大型海藻，属黄渤海地区的特有种类，其分布区包括中国的山东半岛东岸和辽东半岛以及朝鲜半岛南岸与西岸。自20 世纪90 年代以来，受人类活动和栖息地变化的影响，鹿角菜的地理分布范围和种群生物量急剧缩小，面临严重的灭绝风险。本合作项目通过调查黄渤海地区、朝鲜半岛南岸和西岸的鹿角菜地理分布状况，确定其物种的濒危程度和级别；比较分布区域的环境因子差异，采集典型的鹿角菜种群样本；建立鹿角菜特有的DNA种质资源库，明确其种群遗传变异水平，并开展初步的鹿角菜野外移植实验。本合作项目的实施不仅可初步摸清鹿角菜的多样性地理分布现状，评估野外移植和资源修复的可行性，而且对于深入研究全球气候变化和人类活动如何影响鹿角菜的遗传多样性和地理分布变动提供了重要基础与保障。

Silvetia siliquosa is a macroalga endemic in the Yellow-Bohai Sea with important ecological services and commercial values. Its distribution range covers the east coast of Shandong Peninsula, and Liaodong Peninsula, China, and the south and west coasts of Korean Peninsula. Since the 1990s, the geographical range and biomass of natural Silvetia siliquosa populations declined severely due mainly to anthropogenic impacts and habitat fragmentation, leading to a serious risk of extinction. In this joint research project, the China side will cooperate with the Korea side to investigate the current distribution range of Silvetia siliquosa in the Yellow-Bohai Sea and the south and west coasts of Korean Peninsula, determine the extent and level of vulnerability under anthropogenic climate change; compare the differences of multiple environmental variables within distribution range, and collect representative specimens of Silvetia siliquosa populations; establish specific genomic DNA germplasm bank for Silvetia siliquosa and clarify its population genetic diveristy and differentiation, and conduct preliminary transplant experiments outdoor for potential restoration of natural resources. The implementation of this joint project can not only help understood the geographical status and trend of biodiversity of Silvetia siliquosa, evaluate the possibility of transplant and restoration in field, but also provide significant baselines and foundations to subsequently explore how global climate change and human impacts influenced popuolation genetic diversity and biogeographical distribution patterns of Silvetia siliquosa.