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Hummingbird-Plant Network in a Lowland Dry Forest in Yucatan, Mexico
Tropical Conservation Science ( IF 1.7 ) Pub Date : 2020-01-01 , DOI: 10.1177/1940082920973830
Vanessa Martínez-García 1 , Oscar González 2, 3 , Raúl Ortiz-Pulido 1
Affiliation  

Pollination by animals contributes to the production of nearly 87.5% of the seeds and fruits in the world. Hummingbirds are one of the main groups of pollinating birds in the Americas, and they form pollination networks with the plants they visit. Few hummingbird-plant networks have been studied in tropical dry forest, which is one of the vegetation types most affected by deforestation worldwide. In this study, we describe the characteristics of the core species of a mutualistic hummingbird-plant network in a lowland dry forest located on the Yucatan Peninsula of Mexico. The study lasted a full year, from August 2017 to June 2018. Using point counts and focal observations, we identified three species of hummingbirds that visited eight plant species. The network was highly connected and had three modules—one for each hummingbird species. The core hummingbird species was Chlorostilbon canivetii, and the key plants were Cordia dodecandra, Senna racemosa and Psittacanthus mayanus. This hummingbird-plant network is apparently driven by water availability, which determines plant phenology, which in turn, determines hummingbird activity. In the context of global extinction, the conservation of core species will be critical to maintain the interactions that support all of the species in the network.

中文翻译:

墨西哥尤卡坦低地干燥森林中的蜂鸟植物网络

动物授粉促成了世界上近 87.5% 的种子和果实的生产。蜂鸟是美洲主要的授粉鸟类之一,它们与它们访问的植物形成授粉网络。很少有人在热带干燥森林中研究过蜂鸟-植物网络,热带干燥森林是全球受森林砍伐影响最严重的植被类型之一。在这项研究中,我们描述了位于墨西哥尤卡坦半岛的低地干旱森林中互惠蜂鸟植物网络的核心物种的特征。该研究持续了整整一年,从 2017 年 8 月到 2018 年 6 月。使用点计数和焦点观察,我们确定了三种蜂鸟,它们访问了八种植物。该网络高度连接并具有三个模块——每个蜂鸟物种一个。蜂鸟的核心物种为绿粉虱,重点植物为Cordia dodecandra、总状番泻叶和Psittacanthus mayanus。这种蜂鸟-植物网络显然是由水的可用性驱动的,水的可用性决定了植物物候,而这反过来又决定了蜂鸟的活动。在全球灭绝的背景下,核心物种的保护对于维持支持网络中所有物种的相互作用至关重要。
更新日期:2020-01-01
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