(Table 1) N-isotope record of planktonc foraminifera of sediment core MD02-25...

Constraining variations in marine N2-fixation over glacial-interglacial timescales is crucial for determining the role of the marine nitrogen cycle in modifying ocean...约束冰期-间冰期时间尺度下海洋固氮作用（marine N2-fixation）的变异特征，对于阐明海洋氮循环在调节海洋……过程中的作用至关重要。