Males Jamie
Department of Plant Sciences, University of Cambridge, Downing Street, Cambridge, UK.
AoB Plants. 2018 Jan 30;10(1):ply008. doi: 10.1093/aobpla/ply008. eCollection 2018 Feb.
The generation of plant diversity involves complex interactions between geography, environment and organismal traits. Many macroevolutionary processes and emergent patterns have been identified in different plant groups through the study of spatial data, but rarely in the context of a large radiation of tropical herbaceous angiosperms. A powerful system for testing interrelated biogeographical hypotheses is provided by the terrestrial bromeliads, a Neotropical group of extensive ecological diversity and importance. In this investigation, distributional data for 564 species of terrestrial bromeliads were used to estimate variation in the position and width of species-level hydrological habitat occupancy and test six core hypotheses linking geography, environment and organismal traits. Taxonomic groups and functional types differed in hydrological habitat occupancy, modulated by convergent and divergent trait evolution, and with contrasting interactions with precipitation abundance and seasonality. Plant traits in the Bromeliaceae are intimately associated with bioclimatic differentiation, which is in turn strongly associated with variation in geographical range size and species richness. These results emphasize the ecological relevance of structural-functional innovation in a major plant radiation.
植物多样性的产生涉及地理、环境和生物特征之间的复杂相互作用。通过对空间数据的研究，在不同植物类群中已识别出许多宏观进化过程和涌现模式，但在热带草本被子植物的大规模辐射背景下却很少见。陆生凤梨科植物提供了一个强大的系统，用于检验相互关联的生物地理假说，这是一个新热带植物类群，具有广泛的生态多样性和重要性。在这项研究中，利用564种陆生凤梨科植物的分布数据来估计物种水平水文栖息地占用位置和宽度的变化，并检验六个将地理、环境和生物特征联系起来的核心假说。分类群和功能类型在水文栖息地占用方面存在差异，这受到趋同和趋异性状进化的调节，并与降水丰度和季节性存在不同的相互作用。凤梨科植物的性状与生物气候分化密切相关，而生物气候分化又与地理分布范围大小和物种丰富度的变化密切相关。这些结果强调了结构 - 功能创新在主要植物辐射中的生态相关性。
