The Ronnbergia alliance is a lineage of two genera, Ronnbergia and Wittmackia, which diversified in three centres of distribution; the Pacific Forest, the Atlantic Forest and the Caribbean. In this study, we reconstructed the most plausible biogeographic scenario that explain the disjunct evolution of the Ronnbergia alliance in these centres of diversity. We also compared the evolutionary rate dynamics of lineage diversification and floral evolution in each of these areas. Our results suggested that the Ronnbergia alliance originated in the Atlantic Forest c. 5.2 Mya. Ronnbergia originated c. 3.5 Mya after a long-distance dispersal event to the Pacific Forest. The diversification of Wittmackia started in the Atlantic Forest, c. 3.2 Mya, and experienced more heterogeneous evolutionary rate dynamics than Ronnbergia during its radiation. In Wittmackia a long-distance dispersal from the Atlantic Forest to Jamaica gave rise to the Caribbean clade, which diversified rapidly and experienced significantly higher rates of floral evolution. This study helped in understanding how bromeliad diversification occurs differently among major centres of biodiversity. In our case, we found how the Caribbean is a much more dynamic area of diversification than the Atlantic Forest or the Pacific Forest.

中文翻译：

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花的变化和地理分离对龙虾和威特科（凤梨科：凤梨科）的进化动力学的影响。

该Ronnbergia联盟是两个属的谱系Ronnbergia和Wittmackia，这在分布的三个中心的多元化; 太平洋森林，大西洋森林和加勒比海。在这项研究中，我们重建了最合理的生物地理场景，该场景解释了Ronnbergia联盟在这些多样性中心的分离演化。我们还比较了这些区域中每个区域的谱系多样化和花卉进化的进化速率动态。我们的结果表明Ronnbergia联盟起源于大西洋森林c。5.2妙。龙眼属起源于c。3.5远距离弥散事件到太平洋森林后的Mya。Wittmackia的多元化始于大西洋森林c。3.2 Mya，在辐射过程中比Ronnbergia经历了更多的异质进化速率动力学。在维特马克（Wittmackia），从大西洋森林到牙买加的长距离扩散导致出现了加勒比进化枝，该进化枝迅速多样化，并经历了更高的花卉进化率。这项研究有助于了解凤梨科植物多样性如何在主要的生物多样性中心之间发生不同的变化。在我们的案例中，我们发现加勒比海是一个比大西洋森林或太平洋森林更具活力的多元化地区。