Black-legged kittiwake abundance and breeding productivity, OSPAR region II

This data set contains information on breeding abundance and breeding productivity of black-legged kittiwake (Rissa tridactyla) in OSPAR Region II (Greater North Sea). These data have been used to construct a demographic indicator of breeding productivity as part of OSPAR Quality Status Report 2023, and for reporting under the European Union's Marine Strategy Framework Directive.本数据集收录了OSPAR区域II（大北海区域）内三趾鸥（*Rissa tridactyla*）的繁殖丰度与繁殖生产力相关数据。此类数据被用于构建繁殖生产力的种群统计学指标，作为OSPAR 2023年质量状况报告的组成部分，同时用于欧盟《海洋战略框架指令》（Marine Strategy Framework Directive）项下的报告工作。