1. Sampling nectar from forest canopies is logistically challenging as it requires physical access to the canopy to a height greater than that can be achieved by hand. The most common solutions comprise the use of cherry pickers, cranes or tree climbers. These techniques are generally expensive, logistically complex, and often involve additional safety risks and specialized technicians to use the equipment/machinery. In addition, access is required up to the tree for cherry pickers and cranes, and tree climbers are often unable to reach the outermost branches.
2. Here, we propose a simple approach based on a special, easy to assemble tool, to sample tree flowers for subsequent nectar extraction, to avoid climbing and cumbersome/expensive equipment. Conducting a study on nectar production of Eucalypt trees (Myrtaceae) in southwest Australia, we conceived a practical ground‐based tool formed by an extendible pole with an adapted container at the end for covering the tree inflorescence with organza and plastic (polyethylene) bags.
3. We experimented with the tool on dozens of trees of each of the co‐occurring species Eucalyptus marginata and Corymbia calophylla, successfully completing the following operational manoeuvres: bagging the inflorescence with an organza bag prior to the nectar collection, then bagging the inflorescence and organza bags with plastic bags if necessary, and cutting the bagged inflorescences from the branch for subsequent nectar extraction. We present the instructions for assembling the tool and we detail the sequence for bagging and sampling flowers from canopy trees, including time‐saving tips.
4. This approach allows efficient sampling of tree flowers for subsequent nectar extraction. To effectively handle the tool while covering the inflorescence, the maximum sample collection height is approximately 10 m. Overall, the tool helps to address limitations related to sampling nectar from medium‐height trees such as costs, risks and time factors. Beyond tree flowers, the tool can be used for sampling flowers of epiphytic and climbing plants, and it could also be used to test for autogamy in flowering trees.

中文翻译：

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一种简单有效的地面工具，可在高处取样花以进行后续花蜜提取

1. 从林冠层采集花蜜在逻辑上具有挑战性，因为它需要物理接近冠层的高度要大于人工可以达到的高度。最常见的解决方案包括使用樱桃采摘机，起重机或攀树机。这些技术通常是昂贵的，后勤上复杂的，并且经常涉及额外的安全风险和专门的技术人员来使用设备/机械。另外，樱桃采摘器和起重机需要进入树木，而攀树者通常无法到达最外面的树枝。
2. 在这里，我们提出了一种基于特殊，易于组装的工具的简单方法，可以对树木花朵进行采样以进行后续的花蜜提取，从而避免攀爬和繁琐/昂贵的设备。通过对澳大利亚西南部桉树（桃金娘科）的花蜜生产进行研究，我们构想了一种实用的地面工具，该工具由可伸长的杆组成，末端带有合适的容器，用于用欧根纱和塑料（聚乙烯）袋覆盖花序。
3. 我们对该工具进行了实验，对每种同时出现的物种桉树和Corymbia calophylla的数十棵树进行了成功的操作，成功地完成了以下操作：将花序装满花序袋，然后收集花蜜，然后将花序和欧根纱袋装袋必要时用塑料袋包装，并从树枝上切下袋装的花序，以便随后提取花蜜。我们提供了组装工具的说明，并详细介绍了从树冠袋装花和取样的顺序，包括节省时间的技巧。
4. 这种方法可以对树花进行有效采样，以用于随后的花蜜提取。为了在覆盖花序时有效地处理工具，最大样品收集高度约为10 m。总体而言，该工具有助于解决与从中等高度树上采集花蜜有关的限制，例如成本，风险和时间因素。除了树花之外，该工具还可以用于对附生和攀援植物的花朵进行采样，还可以用于测试开花树木中的自生植物。