Many insects have a crucial role as pollinators in both natural ecosystems and agricultural systems. Reports of declining pollinator populations highlight the question how we can support them. Next to semi-natural habitat, different land use types can provide resources for pollinators. However, whether and how different cultivars of pollinator-dependent crops support pollinator populations has not been studied to date. This preliminary study investigated how the abundance of Osmia cornuta and the richness, abundance and community composition of wild pollinators (i.e. wild bees and hover flies) fluctuates throughout the bloom period of three sequentially flowering sweet cherry (Prunus avium) cultivars. Total pollinator richness and abundance increased throughout the bloom period of the different cherry cultivars. This increase was driven by an increase of wild bee richness and abundance, coupled with a decrease of nest-searching bees. The abundance of O. cornuta was found to increase throughout the bloom period. Furthermore, the composition of the pollinator community was significantly different across the different cultivars. Results of this preliminary study reflect the dynamics of wild bee emergence, mating and nest construction, which results in an increase in pollinator diversity and abundance in spring. This study also provides the first evidence that sequentially flowering cultivars of a pollinator-dependent crop can provide complementary floral resources that support complementary pollinator communities. Given the importance of wild pollinators for crop pollination, these results have implications for crop production and pollinator persistence in agricultural landscapes.

许多昆虫在自然生态系统和农业系统中作为传粉者起着至关重要的作用。传粉媒介数量下降的报告凸显了我们如何支持它们的问题。除了半自然栖息地，不同的土地利用类型可以为传粉媒介提供资源。然而，迄今为止，尚未研究不同的传粉媒介依赖作物栽培品种是否以及如何支持传粉媒介种群。这一初步研究探讨的丰度如何壁蜂枸骨和野生授粉的丰富度，丰度和群落组成（即野生蜜蜂和食蚜蝇）波动在整个三个按顺序开花甜樱桃（的花期甜樱桃) 品种。在不同樱桃品种的整个开花期，传粉媒介的总丰富度和丰度都有所增加。这一增长是由野生蜜蜂丰富度和丰度的增加以及寻巢蜜蜂的减少所推动的。O.cornuta的丰富度发现在整个开花期间增加。此外，传粉媒介群落的组成在不同品种之间显着不同。这项初步研究的结果反映了野生蜜蜂出现、交配和筑巢的动态，这导致春季传粉媒介多样性和丰度增加。这项研究还提供了第一个证据，表明依赖传粉媒介的作物的连续开花品种可以提供支持互补传粉媒介群落的互补花卉资源。鉴于野生传粉媒介对作物授粉的重要性，这些结果对农业景观中的作物生产和传粉媒介的持久性具有影响。