Muneret Lucile, Alignier Audrey, Ricci Benoît, Dosset Alexandre, Allart Roland, Ducourtieux Chantal, Laurent Emilien, Aviron Stéphanie, Vialatte Aude, Petit Sandrine
Agroécologie, INRAE, Institut Agro, Université Bourgogne, Université Bourgogne Franche-Comté, INRAE, Institut Agro, Université Bourgogne Europe, Dijon, France.
Université Paris-Saclay, AgroParisTech, INRAE, UMR Agronomie, Palaiseau, France.
J Anim Ecol. 2025 Jul;94(7):1410-1421. doi: 10.1111/1365-2656.70063. Epub 2025 May 29.
While the temporal stability of plant communities has been well investigated, almost nothing is known about the inter-annual stability of arthropod communities, especially those inhabiting highly disturbed habitats such as croplands. We investigated the effects of landscape, management and community drivers on the temporal carabid biomass stability and its mean in agricultural landscapes. The dataset was composed of carabids collected in 57 arable agroecosystems from three areas in France excluding pastures and managed under organic, conservation or conventional farming. Data also included local- and landscape-level management descriptors. Through a piecewise structural equation modelling approach, we tested the effects of landscape- and field-level management intensity and variability, richness and compositional carabid community metrics such as mean α-richness, standard deviation α-richness, β-diversity and asynchrony on carabid biomass stability and mean value. The temporal stability of the carabid biomass increased as temporal β-diversity of the carabid community decreased and asynchrony among species increased. Furthermore, β-diversity decreased and asynchrony increased with the community's mean α-richness. At the landscape level, diversifying crop phenology and reducing the proportion of cropland appear to be the most efficient way to support carabid biomass stability. The effect of α-richness on carabid biomass stability tends to be modulated by species composition. However, this study underscores the need to investigate the relative effects of temporal β-diversity and asynchrony on the stabilisation of ecosystem functioning in real ecosystems, as the reasons for their lack of covariance and similar effects remain unclear.
虽然植物群落的时间稳定性已得到充分研究，但对于节肢动物群落的年际稳定性，尤其是那些栖息在农田等高度干扰栖息地的节肢动物群落，人们几乎一无所知。我们研究了景观、管理和群落驱动因素对农业景观中步甲生物量时间稳定性及其平均值的影响。数据集由在法国三个地区的57个可耕农业生态系统中收集的步甲组成，不包括牧场，且采用有机、保护性或传统耕作方式管理。数据还包括地方和景观层面的管理描述符。通过分段结构方程建模方法，我们测试了景观和田间层面的管理强度和变异性、丰富度以及步甲群落组成指标（如平均α丰富度、α丰富度标准差、β多样性和异步性）对步甲生物量稳定性和平均值的影响。步甲生物量的时间稳定性随着步甲群落的时间β多样性降低和物种间异步性增加而提高。此外，β多样性随着群落的平均α丰富度降低而降低，异步性则增加。在景观层面，使作物物候多样化并减少农田比例似乎是支持步甲生物量稳定性的最有效方法。α丰富度对步甲生物量稳定性的影响往往受物种组成的调节。然而，本研究强调需要研究时间β多样性和异步性对真实生态系统中生态系统功能稳定的相对影响，因为它们缺乏协方差和类似影响的原因仍不清楚。
