Pollinator networks, alien species and the conservation of rare plants:: Trinia glauca as a case study
Pollinator networks, alien species and the conservation of rare plants:: Trinia glauca as a case study
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DOI：
10.1111/j.1365-2664.2008.01518.x
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发表时间：
2008-10-01
影响因子：
5.7
通讯作者：
Memmott, J.
中科院分区：
文献类型：
--
作者：
Carvalheiro, L. G.;Barbosa, E. R. M.;Memmott, J.
1. 尽管传粉在维持许多珍稀植物物种中起着至关重要的作用，但保护管理计划很少考虑传粉的服务。本研究确定了英国一种珍稀植物凤头花（triia glauca）的主要传粉媒介，并对其保护提出了建议。我们采用了社区层面的方法，构建了一个访客网络，以确定T glauca与植物访客社区其他成员之间的直接和间接联系。在排除主要访花物种的野外实验中发现，蚂蚁是青衣的主要传粉者。网络显示，在田间季节，33%的蚂蚁访花是外来植物，在T glauca花期，Cotoneaster horizontalis的贡献特别高（58%）。外来植物的移除是灰灰瓢虫保护管理的一部分，我们模拟了这种形式的栖息地管理对灰灰瓢虫传粉的可能后果，任何影响都是由共享传粉媒介介导的。虽然可能产生正面或中性的影响，但也可能产生负面影响，即外来植物的移除导致蚂蚁种群的崩溃，可能使传粉者对T glauca的访问减少高达85.2%。合成与应用。保护稀有植物的传粉媒介，如果它们的保护是长期可持续的，是至关重要的。我们的数据表明，T glauca是由蚂蚁授粉的，并且证明蚂蚁也可以以外来植物为食，特别是在这种稀有植物的开花季节。我们建议，外来植物的移栽管理措施应考虑到外来植物的移栽对珍稀植物可能产生的负面影响。在这种情况下，分阶段清除可能是最好的保护方法，可以在任何严重的负面影响发生之前评估传粉者的反应。
1. Despite the essential role of pollination in the maintenance of many rare plant species, conservation management plans rarely consider the service of pollination.2. This study identifies the main pollinators of a rare English plant species, Trinia glauca (Apiaceae), and provides recommendations for its conservation. A community-level approach is used, whereby a visitation network is constructed to identify the direct and indirect links between T glauca and other members of the plant-visitor community.3. A field experiment that excluded the main visitor species from female T glauca showed that ants were the main pollinators of T glauca. The network revealed that over the field season, 33% of the ants' visits to flowers were to alien plants, with Cotoneaster horizontalis making a particularly high contribution (58%) during the T glauca flowering period.4. The removal of alien plants is a part of the conservation management of T glauca, and we simulated the likely consequences of this form of habitat management on T glauca pollination, any effects being mediated by shared pollinators. Although positive or neutral effects are possible, a negative effect is also possible, whereby the removal of alien plants leads to a crash in ant populations, potentially reducing pollinator visits to T glauca by up to 85.2%.5. Synthesis and applications. Conserving the pollinators of rare plants is essential if their conservation is to be sustainable in the long term. Our data indicate that T glauca is pollinated by ants and demonstrate that ants can also feed on alien plants, particularly during the flowering season of this rare plant. We suggest that management measures involving the removal of alien plants should consider the possible negative impacts on rare plants through changes in pollinator populations. In this case, a staged removal is likely to prove the best conservation approach, allowing the pollinators' response to be assessed before any serious negative effects occur.