Pinilla-Rosa Manuel, García-Saúco Guillermo, Santiago Alejandro, Ferrandis Pablo, Méndez Marcos
University Rey Juan Carlos, C/ Tulipán s/n, 28933 Móstoles, Madrid Spain.
Botanic garden of Castilla-La Mancha, Avda. de La Mancha s/n, 02006 Albacete, Spain.
Limnology (Tokyo). 2023;24(1):37-50. doi: 10.1007/s10201-022-00704-3. Epub 2022 Oct 13.
In a scenario with declining biodiversity and habitat loss, botanic gardens could serve as refuges for invertebrates, but the opportunities they offer for animal conservation are still poorly understood. Odonata is a good model group for conservation studies, because it includes threatened species and responses to habitat disturbance are well documented. In this study, we assessed the role of the botanic garden of Castilla-La Mancha in Spain as a refuge for members of Odonata by analysing their taxonomic and functional diversity. We explored if the small size of the botanic garden might constrain the taxonomic diversity of Odonata and if low habitat diversity might limit their functional diversity. We sampled adult Odonata from five water bodies along a gradient of human impact and characterized the Odonata communities based on 12 functional traits in Odonata. We used a species-area relationship to control for differences in the size of water bodies. Compared with natural lakes, the Odonata communities contained less species and their functional diversity was lower in the botanic garden ponds, where generalist species were basically hosted. Despite these limitations, the botanic garden ponds hosted the number of species expected for natural water bodies with the moderate surface area and functional diversity, thereby demonstrating that they are a valuable habitat for Odonata in an urban environment. Appropriate management involving the removal of exotic fish and habitat diversification, including creating lotic environments, would increase the taxonomic and functional diversity of Odonata in this urban system.
The online version contains supplementary material available at 10.1007/s10201-022-00704-3.
在生物多样性下降和栖息地丧失的情况下，植物园可作为无脊椎动物的避难所，但人们对其提供的动物保护机会仍知之甚少。蜻蜓目是保护研究的一个良好模型类群，因为它包括受威胁物种，且对栖息地干扰的反应有充分记录。在本研究中，我们通过分析西班牙卡斯蒂利亚-拉曼恰植物园中蜻蜓目成员的分类和功能多样性，评估了该植物园作为蜻蜓目避难所的作用。我们探讨了植物园面积较小是否会限制蜻蜓目的分类多样性，以及栖息地多样性较低是否会限制其功能多样性。我们沿着人类影响梯度，从五个水体中采集成年蜻蜓目昆虫样本，并根据蜻蜓目的12个功能性状对蜻蜓目群落进行了特征描述。我们使用物种-面积关系来控制水体大小的差异。与天然湖泊相比，植物园池塘中的蜻蜓目群落物种较少，其功能多样性较低，且主要栖息着广适性物种。尽管存在这些限制，但植物园池塘中拥有中等表面积和功能多样性的天然水体所预期的物种数量，从而表明它们是城市环境中蜻蜓目的宝贵栖息地。采取包括清除外来鱼类和使栖息地多样化（包括营造流水环境）在内的适当管理措施，将增加该城市系统中蜻蜓目的分类和功能多样性。
在线版本包含可在10.1007/s10201-022-00704-3获取的补充材料。
