In the context of coastal marshland reduction due to sea level rise, we evaluated the value of fragmented reed beds located within agricultural polders for the conservation of habitats exploited by marshland passerines characterized by different ecological requirements. Although our study was carried out within sites sampled over different years, analyses of body condition and diet of birds during the breeding period, as well as the local daily survival rate and the body mass evolution of birds during the post-breeding period, reveal trends illustrating that fragmented reed beds within inland meadows can: (i) generate habitats that may be significantly exploited by species with a large ecological plasticity, such as the Reed Warbler that could benefit from edge effects of habitat fragmentation; (ii) offer low attractiveness for specialised species such as the Aquatic Warbler, a migratory species apparently very sensitive to the effects of reed bed fragmentation. These results underline the reed beds fragmentation effects that may impact specialised marshland passerines and which should be taken into account in wetland conservation and restoration plans.

在海平面上升导致沿海沼泽地减少的背景下，我们评估了位于农业圩田内的碎片化芦苇床对保护具有不同生态要求的沼泽雀鸟所利用的栖息地的价值。虽然我们的研究是在不同年份采样的地点进行的，但对繁殖期间鸟类的身体状况和饮食的分析，以及繁殖后期间鸟类的当地每日存活率和体重演变，揭示了趋势说明内陆草甸内破碎的芦苇床可以：(i) 产生可能被具有较大生态可塑性的物种大量利用的栖息地，例如可以从栖息地破碎化的边缘效应中受益的芦苇莺；(ii) 对水生莺等特殊物种的吸引力较低，这种迁徙物种显然对芦苇床破碎的影响非常敏感。这些结果强调了芦苇床破碎效应可能影响专门的沼泽雀斑，在湿地保护和恢复计划中应该考虑到这一点。