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首页> 外文期刊>Oecologia >Plant patch structure influences plant fitness via antagonistic and mutualistic interactions but in different directions
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Plant patch structure influences plant fitness via antagonistic and mutualistic interactions but in different directions

机译：植物斑块的结构通过相互对抗和相互影响的方式影响植物的适应性

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摘要

Plant patch structure and environmental context can influence the outcome of antagonistic and mutualistic plant-insect interactions, leading to spatially variable fitness effects for plants. We investigated the effects of herbivory and pollen limitation on plant reproductive performance in 28 patches of the self-compatible perennial herb Scrophularia nodosa and assessed how such effects varied with plant patch size, plant density and tree cover. Both antagonistic and mutualistic interactions had strong effects on plant reproductive performance. Leaf feeding from herbivores reduced both fruit production and seed germination, and leaf herbivory increased with plant patch size. Experimentally hand-pollinated flowers produced more seeds than open-pollinated flowers, and pollen limitation was more severe in patches with fewer plants. Our study on S. nodosa is one of few which documents that plant patch structure influences the outcome of both antagonistic and mutualistic plant-insect interactions. The results thus provide an example of how variation in plant patch structure and environmental factors can lead to spatially variable fitness effects from mutualistic and antagonistic interactions.
机译：植物斑块的结构和环境环境会影响植物与昆虫之间相互拮抗和相互作用的结果，从而导致植物的空间适应性效应。我们调查了食草和花粉限制对28种自交多年生草本多年生玄参玄参的植物繁殖性能的影响，并评估了这些效应如何随植物斑块大小，植物密度和树木覆盖率而变化。拮抗作用和互惠作用都对植物的繁殖性能有很大影响。食草动物的叶片饲喂减少了水果的产量和种子发芽，而叶片食草性则随着植物斑块的大小而增加。从实验上讲，手工授粉的花比开放授粉的花产生更多的种子，在植株少的地方，花粉的限制更为严重。我们对结节链球菌的研究是植物补丁结构影响植物和昆虫相互对立和相互作用的结果的少数文献之一。因此，结果提供了一个示例，说明植物斑块结构和环境因素的变化如何通过互惠和拮抗相互作用导致空间可变的适应性效应。

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