UNASSIGNED: The interactions between plants and potential pollinators were recorded through direct observation in 10 transects during six field trips conducted over the course of one year. Subsequently, an interaction matrix was developed, and network metrics such as connectance, specialization, nestedness, and asymmetry of interaction strength were evaluated by applying null models. An interpolation/extrapolation curve was calculated in order to assess the representativeness of the sample. Finally, the key species of the network were identified by considering degree (k), centrality, and betweenness centrality.
UNASSIGNED: A total of 53 plant species and 52 potential pollinator species (including insects and birds) were recorded, with a sample coverage of 88.5%. Connectance (C = 0.19) and specialization (H2\' = 0.19) were low, indicating a generalist network. Freziera canescens, Gaiadendron punctatum, Persea mutisii, Bombus rubicundus, Heliangelus exortis, Chironomus sp., and Metallura tyrianthina were identified as the key species that contribute to a more cohesive network structure.
UNASSIGNED: The present study characterized the structure of the plant-pollinator network in a highly diverse Andean forest in Colombia. It is evident that insects are the largest group of pollinators; however, it is interesting to note that birds form a different module that specializes in pollinating a specific group of plants. On the other hand, the diversity and generality of the species found suggest that the network may be robust against chains of extinction. Nevertheless, the presence of certain introduced species, such as Apis mellifera, and the rapid changes in vegetation cover may affect the dynamics of this mutualistic network. So, it is imperative to apply restoration and conservation strategies to these ecosystems in order to enhance plant-animal interactions and prevent the loss of taxonomical and functional diversity.
■植物与潜在传粉者之间的相互作用是通过在一年内进行的六次实地考察中对10个样带进行的直接观察来记录的。随后,建立了相互作用矩阵,和网络指标,如连通性,专业化,嵌套,并通过应用零模型评估了相互作用强度的不对称性。计算内插/外推曲线以评估样品的代表性。最后,通过考虑程度(K),确定了网络的关键物种。中心性,和中间性中心性。
■共记录了53种植物和52种潜在的传粉者(包括昆虫和鸟类),样本覆盖率为88.5%。连通性(C=0.19)和专业化(H2'=0.19)较低,表明一个通才网络。Frezieracanescens,Gaiadendron点,Perseamutisii,Bombusrubicundus,Heliangelusexortis,Chironomussp.,和Metalluratyrianthina被确定为有助于更具凝聚力的网络结构的关键物种。
■本研究表征了哥伦比亚高度多样化的安第斯森林中植物传粉者网络的结构。很明显,昆虫是最大的传粉者群体;然而,有趣的是,鸟类形成了一个不同的模块,专门为一组特定的植物授粉。另一方面,所发现物种的多样性和普遍性表明,该网络可能对灭绝链具有强大的抵抗力。然而,某些引进物种的存在,如Apismellifera,植被覆盖的快速变化可能会影响这种互惠网络的动态。所以,必须对这些生态系统应用恢复和保护策略,以加强动植物相互作用,防止分类学和功能多样性的丧失。