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Bee-Plant Interaction Networks in a Seasonal Dry Tropical Forest of the Colombian Caribbean.
Neotropical Entomology ( IF 1.4 ) Pub Date : 2020-07-31 , DOI: 10.1007/s13744-020-00804-8
N A Flórez-Gómez 1, 2 , J D Maldonado-Cepeda 1, 3 , R Ospina-Torres 1
Affiliation  

Mutualistic interactions between bees and flowering plants have been widely recognized as one of the most important for the maintenance of these communities throughout ecosystems. Consequently, understanding how these interactions occur is highly important, especially in seasonal dry tropical forest (SDTF), one of the most endangered ecosystems in northern South America. In this study, we analyzed the changes between interaction networks across two well-defined seasons, dry and wet, in a SDTF of the Colombian Caribbean in Taganga, Magdalena. We also determined changes in species composition and their role in interaction networks. To study this system, we compared two approaches: (1) networks constructed with data from direct collections in flowering plants, and (2) networks constructed with pollen data obtained from bees’ bodies. A total of 44 species were collected in 18 species of flowering plants; also, we registered 16 additional plants presented in the records only as pollen types. We found that network metrics, connectance, nestedness, specialization (H2′), and interaction strength asymmetry remain stable through seasons. However, when the two types of approximations were compared, there were significant differences. Networks constructed with pollen data are more connected, less specialized, and with lower values of interaction strength asymmetry. The major difference between seasons relied on the interacting species composition, due to a high species turnover. Bee community was more diverse in dry season. Apidae family, mainly eusocial species, persisted in the community, being more abundant and relevant in wet season. For dry season, Megachile and other solitary species from Apidae and Halictidae families were better represented and relevant for the community. We found that Fabaceae is an important resource for bees in both seasons. In addition, herbaceous species from Asteraceae and Convolvulaceae were preferred in wet season, while shrub and tree species from Fabaceae and Polygonaceae were the main resource in dry season.

中文翻译:

哥伦比亚加勒比海的季节性干燥热带森林中的蜜蜂-植物相互作用网络。

蜜蜂与开花植物之间的相互影响已被广泛认为是在整个生态系统中维护这些群落的最重要因素之一。因此,了解这些相互作用的发生方式非常重要,尤其是在季节性干燥热带森林(SDTF)中,后者是南美洲北部最危险的生态系统之一。在这项研究中,我们分析了在马格达莱纳塔甘加的哥伦比亚加勒比海SDTF中,两个明确定义的季节(干燥和潮湿)之间的交互网络之间的变化。我们还确定了物种组成的变化及其在相互作用网络中的作用。为了研究该系统,我们比较了两种方法:(1)使用直接从开花植物中采集的数据构建的网络,以及(2)使用从蜜蜂体内获取的花粉数据构建的网络。在18种开花植物中共采集了44种;另外,我们注册了记录中仅以花粉类型出现的16种其他植物。我们发现网络指标,连接性,嵌套性,专业性(H2')和交互强度不对称在整个季节中都保持稳定。但是,当比较两种近似值时,存在显着差异。用花粉数据构建的网络连接更紧密,专业性更强且交互强度不对称性值较低。季节之间的主要区别在于相互作用的物种组成,这是由于物种周转率很高。旱季蜜蜂群落更加多样化。Apidae科,主要是共生种,在社区中持续存在,在雨季更为丰富和相关。在旱季 我们将记录中显示的16种其他植物注册为花粉类型。我们发现网络指标,连接性,嵌套性,专业性(H2')和交互强度不对称在整个季节中都保持稳定。但是,当比较两种近似值时,存在显着差异。用花粉数据构建的网络连接更紧密,专业性更强且交互强度不对称性值较低。季节之间的主要差异取决于相互作用的物种组成,因为物种周转率很高。旱季蜜蜂群落更加多样化。Apidae科,主要是共生种,在社区中持续存在,在雨季更为丰富和相关。在旱季 我们将记录中显示的16种其他植物注册为花粉类型。我们发现网络指标,连接性,嵌套性,专业化(H2')和交互强度不对称在整个季节中都保持稳定。但是,当比较两种近似值时,存在显着差异。用花粉数据构建的网络连接更紧密,专业性更强且交互强度不对称性值较低。季节之间的主要差异取决于相互作用的物种组成,因为物种周转率很高。旱季蜜蜂群落更加多样化。Apidae科,主要是共生种,在社区中持续存在,在雨季更为丰富和相关。在旱季 嵌套,专业化(H2')和交互强度不对称在整个季节中保持稳定。但是,当比较两种近似值时,存在显着差异。用花粉数据构建的网络连接更紧密,专业性更强且交互强度不对称性值较低。季节之间的主要差异取决于相互作用的物种组成,因为物种周转率很高。旱季蜜蜂群落更加多样化。Apidae科,主要是共生种,在社区中持续存在,在雨季更为丰富和相关。在旱季 嵌套,专业化(H2')和交互强度不对称在整个季节中保持稳定。但是,当比较两种近似值时,存在显着差异。用花粉数据构建的网络连接更紧密,专业性更强且交互强度不对称性值较低。季节之间的主要差异取决于相互作用的物种组成,因为物种周转率很高。旱季蜜蜂群落更加多样化。Apidae科,主要是共生种,在社区中持续存在,在雨季更为丰富和相关。在旱季 用花粉数据构建的网络连接更紧密,专业性更强且交互强度不对称性值较低。季节之间的主要差异取决于相互作用的物种组成,因为物种周转率很高。旱季蜜蜂群落更加多样化。Apidae科,主要是共生种,在社区中持续存在,在雨季更为丰富和相关。在旱季 用花粉数据构建的网络连接更紧密,专业性更强且交互强度不对称性值较低。季节之间的主要差异取决于相互作用的物种组成,因为物种周转率很高。旱季蜜蜂群落更加多样化。Apidae科,主要是共生种,在社区中持续存在,在雨季更为丰富和相关。在旱季来自Apidae和Halictidae家族的Megachile和其他孤独物种得到了更好的代表,并与社区相关。我们发现在两个季节中,豆科都是蜜蜂的重要资源。此外,在雨季,菊苣科和旋花科的草本种是首选,而旱季的豆科和Poly科的灌木和乔木则是主要资源。
更新日期:2020-07-31
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