Evolutionary heritage influences Amazon tree ecology.
Evolutionary heritage influences Amazon tree ecology.
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DOI：
10.1098/rspb.2016.1587
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发表时间：
2016-12-14
期刊：
影响因子：
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通讯作者：
Baker TR
中科院分区：
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作者：
Coelho de Souza F;Dexter KG;Phillips OL;Brienen RJ;Chave J;Galbraith DR;Lopez Gonzalez G;Monteagudo Mendoza A;Pennington RT;Poorter L;Alexiades M;Álvarez-Dávila E;Andrade A;Aragão LE;Araujo-Murakami A;Arets EJ;Aymard C GA;Baraloto C;Barroso JG;Bonal D;Boot RG;Camargo JL;Comiskey JA;Valverde FC;de Camargo PB;Di Fiore A;Elias F;Erwin TL;Feldpausch TR;Ferreira L;Fyllas NM;Gloor E;Herault B;Herrera R;Higuchi N;Honorio Coronado EN;Killeen TJ;Laurance WF;Laurance S;Lloyd J;Lovejoy TE;Malhi Y;Maracahipes L;Marimon BS;Marimon-Junior BH;Mendoza C;Morandi P;Neill DA;Vargas PN;Oliveira EA;Lenza E;Palacios WA;Peñuela-Mora MC;Pipoly JJ 3rd;Pitman NC;Prieto A;Quesada CA;Ramirez-Angulo H;Rudas A;Ruokolainen K;Salomão RP;Silveira M;Stropp J;Ter Steege H;Thomas-Caesar R;van der Hout P;van der Heijden GM;van der Meer PJ;Vasquez RV;Vieira SA;Vilanova E;Vos VA;Wang O;Young KR;Zagt RJ;Baker TR
世系往往会随着时间的推移保留其祖先的生态特征。然而，对于某些性状，进化史中的选择可能也在决定性状价值方面发挥了作用。要解决这些过程的相对重要性，需要对物种之间的特征和进化关系进行大规模量化。亚马逊河树木区系包括高度多样性的被子植物谱系和具有截然不同的生活史特征的物种，这为研究进化遗传和选择在确定性状变异方面的组合影响提供了一个很好的系统。我们使用了与热带树木生活史变异的主轴相关的性状数据(例如，生长和死亡率)，这些数据来自封闭冠层森林中的577个调查样地，映射到一个横跨300多个属的系统发育假说，包括所有主要的被子植物支系，以测试对性状的进化限制。我们发现了所有性状的显著系统发育信号(PS)，这与进化上相关的属具有比预期更相似的特征是一致的。虽然也有证据表明，在独立的谱系中，开拓者和耐荫生活史策略反复进化，但重要的PS的存在使人们能够更清楚地预测进化多样性、生态系统功能和热带森林对全球变化的反应之间的联系。
Lineages tend to retain ecological characteristics of their ancestors through time. However, for some traits, selection during evolutionary history may have also played a role in determining trait values. To address the relative importance of these processes requires large-scale quantification of traits and evolutionary relationships among species. The Amazonian tree flora comprises a high diversity of angiosperm lineages and species with widely differing life-history characteristics, providing an excellent system to investigate the combined influences of evolutionary heritage and selection in determining trait variation. We used trait data related to the major axes of life-history variation among tropical trees (e.g. growth and mortality rates) from 577 inventory plots in closed-canopy forest, mapped onto a phylogenetic hypothesis spanning more than 300 genera including all major angiosperm clades to test for evolutionary constraints on traits. We found significant phylogenetic signal (PS) for all traits, consistent with evolutionarily related genera having more similar characteristics than expected by chance. Although there is also evidence for repeated evolution of pioneer and shade tolerant life-history strategies within independent lineages, the existence of significant PS allows clearer predictions of the links between evolutionary diversity, ecosystem function and the response of tropical forests to global change.