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Pollinator‐mediated facilitation is associated with floral abundance, trait similarity and enhanced community‐level fitness
Journal of Ecology ( IF 5.3 ) Pub Date : 2020-01-08 , DOI: 10.1111/1365-2745.13348 Pedro Joaquim Bergamo 1, 2 , Nathália Susin Streher 3 , Marina Wolowski 4 , Marlies Sazima 5
中文翻译：
授粉媒介介导的促进作用与花的丰富度，性状相似性和增强的社区适应度有关
更新日期：2020-01-08
Journal of Ecology ( IF 5.3 ) Pub Date : 2020-01-08 , DOI: 10.1111/1365-2745.13348 Pedro Joaquim Bergamo 1, 2 , Nathália Susin Streher 3 , Marina Wolowski 4 , Marlies Sazima 5
Affiliation
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- Pollinator‐mediated processes (biotic filtering, facilitation or competition) are often inferred by patterns of plant reproductive trait diversity (clustering or evenness of reproductive traits within the community). However, one single pattern can be generated by distinct processes, making difficult to predict the main process of community assembly. Incorporating fitness estimates should improve the link between pattern and process.
- We investigated patterns of flowering phenology and reproductive traits (floral colour, floral size and anther height) along the season of a pollinator‐depauperated and generalized community. We used data on fitness (pollen receipt and number of pollen tubes) to provide a functional link between trait patterns and assembly mechanisms. We also investigated whether the degree of co‐flowering depended on the floral abundance and pollination functional group (fly‐, bee‐, hummingbird‐pollinated and generalist species) of the plant species.
- High floral abundance in the flowering season was associated with low trait diversity in the community. Both features increased fitness at the community level. This indicates that similar species are benefited at periods of high floral abundance, probably due to the joint attraction of generalist pollinators in this pollinator‐depauperated community. In general, rare species flowered more synchronously with the community than abundant ones, although distinct patterns emerged depending on the floral trait and pollination functional group. Furthermore, species highly synchronous and possessing similar floral colour in relation to the community had higher fitness indicating that facilitative mechanisms act favouring flowering synchrony and trait similarity.
- Synthesis. Patterns of flowering synchrony and floral trait similarity indicate pollination facilitation in the studied community. Plants benefited from co‐flowering with species possessing similar floral colour via shared pollinator attraction. Thus, we empirically demonstrated some of the predictions of community assembly theory.
中文翻译：
授粉媒介介导的促进作用与花的丰富度，性状相似性和增强的社区适应度有关
- 授粉媒介介导的过程（生物过滤，促进或竞争）通常是由植物生殖性状多样性的模式（群落内生殖性状的集群或均匀性）推断的。但是，一个单独的模式可以由不同的过程生成，从而难以预测社区组装的主要过程。纳入适应度估计值应改善模式与过程之间的联系。
- 我们调查了在授粉媒介绝育和普遍化群落的整个季节的开花物候和生殖性状（花色，花大小和花药高度）的模式。我们使用了适合度的数据（花粉收据和花粉管数量）来提供性状模式和装配机制之间的功能联系。我们还调查了共同开花的程度是否取决于植物物种的花卉丰度和授粉功能组（蝇，蜂，蜂鸟授粉和通才种）。
- 开花季节的高花丰度与群落中低性状多样性相关。这两个功能都提高了社区级别的适应性。这表明在花多度高的时期，相似的物种受益匪浅，这可能是由于该传粉者绝育社区中的通才传粉者共同吸引。通常，稀有物种与群落的开花比丰富物种的开花更同步，尽管根据花的性状和授粉功能群出现了不同的模式。此外，高度同步并具有与社区相关的相似花色的物种具有较高的适应性，表明促进性机制发挥了促进开花同步和性状相似的作用。
- 合成。开花同步性和花性状相似性的模式表明在所研究的社区中的授粉促进。通过共享的传粉媒介吸引力，植物可与具有相似花色的物种共同开花。因此，我们以经验证明了一些关于社区集会理论的预测。
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