全球智库信息集成服务系统(G2TT): Biodiversity loss through speciation collapse: Mechanisms, warning signals, and possible rescue.

G2TT

来源类型	Article
规范类型	其他
DOI	10.1111/evo.13736
	Biodiversity loss through speciation collapse: Mechanisms, warning signals, and possible rescue.
	Zhang L; Thibert‐Plante X; Ripa J; Svanbäck R; Brännström Å
发表日期	2019
出处	Evolution
出版年	2019
语种	英语
摘要	Speciation is the process that generates biodiversity, but recent empirical findings show that it can also fail, leading to the collapse of two incipient species into one. Here, we elucidate the mechanisms behind speciation collapse using a stochastic individual-based model with explicit genetics. We investigate the impact of two types of environmental disturbance: deteriorated visual conditions, which reduce foraging ability and impede mate choice, and environmental homogenization, which restructures ecological niches. We find that: (1) Species pairs can collapse into a variety of forms including new species pairs, monomorphic or polymorphic generalists, or single specialists. Notably, polymorphic generalist forms may be a transient stage to a monomorphic population; (2) Environmental restoration enables species pairs to re-emerge from single generalist forms, but not from single specialist forms; (3) Speciation collapse is up to four orders of magnitude faster than speciation, while the re-emergence of species pairs can be as slow as de novo speciation; (4) While speciation collapse can be predicted from either demographic, phenotypic, or genetic signals, observations of phenotypic changes allow the most general and robust warning signal of speciation collapse. We conclude that factors altering ecological niches can reduce biodiversity by reshaping the ecosystem's evolutionary attractors.
主题	Evolution and Ecology (EEP)
关键词	Speciation assortative mating hybridization species diversity warning signals
URL	http://pure.iiasa.ac.at/id/eprint/15850/
来源智库	International Institute for Applied Systems Analysis (Austria)
引用统计
资源类型	智库出版物
条目标识符	http://119.78.100.153/handle/2XGU8XDN/131725
推荐引用方式 GB/T 7714	Zhang L,Thibert‐Plante X,Ripa J,et al. Biodiversity loss through speciation collapse: Mechanisms, warning signals, and possible rescue.. 2019.