Species-habitat networks reveal conservation implications that other community analyses do not detect

Grassland restoration is an important conservation intervention supporting declining insect pollinators, particularly in threatened calcareous grassland landscapes. While restoration is often assessed using simple diversity or the similarity to a target community metrics, this can fail to represent key aspects of community reconstruction. Here, we compare a new method, species-habitat networks, with techniques previously relied upon to understand the process of pollinator community restoration. The species-habitat network approach reveals details relevant to insect conservation that are not visible using standard measures of species richness, abundance, community similarity or network metrics. For instance, a shared set of butterflies and bumblebees found in ancient extensively managed grassland, the target community for restoration, were more likely to inhabit previously disturbed grassland than recently disturbed or reverting grasslands. We propose that species-habitat networks should...

草地恢复是一项重要的保护干预举措，可为种群数量衰减的昆虫传粉者提供保育支撑，在受威胁的石灰质草原（calcareous grassland）景观中尤为关键。尽管草地恢复的评估通常以简单的物种多样性或与目标群落的相似度为指标，但此类方法往往无法反映群落重建的核心维度。本研究将一种新兴方法——物种-栖息地网络（species-habitat networks），与此前用于解析传粉者群落恢复过程的传统技术进行对比分析。物种-栖息地网络方法能够揭示昆虫保育相关的诸多关键细节，而这些细节是物种丰富度、多度、群落相似度或网络指标等常规测量手段无法捕捉的。例如，作为恢复目标群落的古老粗放管理草地中存在一类共有的蝴蝶和熊蜂类群，这类类群更倾向于栖息在先前受干扰的草地，而非新近受干扰或处于恢复过程中的草地。我们建议，物种-栖息地网络应当……