Biodiversity loss through speciation collapse: Mechanisms, warning signals, and possible rescue

15850 10 87234 3 247836 document 87234 evo.13736.pdf application/pdf 639bee5ed94cdf66635dca223a19d741 MD5 1418986 2019-04-15 06:39:54 https://pure.iiasa.ac.at/id/eprint/15850/1/evo.13736.pdf 15850 1 1 application/pdf text en public cc_by_nc_4

evo.13736.pdf

accepted 87241 1 247856 document 87241 indexcodes.txt text/x-c bbb00748c3f878ebb8ae0a2d54135efc MD5 12823 2019-04-15 06:48:52 https://pure.iiasa.ac.at/id/eprint/15850/2/indexcodes.txt 15850 2 2 text/x-c other Generate index codes conversion from text to indexcodes en staffonly

indexcodes.txt

lightbox.jpg

preview.jpg

medium.jpg

small.jpg

http://eprints.org/relation/isVersionOf https://pure.iiasa.ac.at/id/document/87234 http://eprints.org/relation/isVolatileVersionOf https://pure.iiasa.ac.at/id/document/87234 http://eprints.org/relation/issmallThumbnailVersionOf https://pure.iiasa.ac.at/id/document/87234 archive 353 disk0/00/01/58/50 2019-04-15 06:41:06 2021-08-27 17:31:38 2019-04-15 06:41:06 article show Zhang L. Thibert‐Plante X. Ripa J. Svanbäck R. Brännström Å. 8085 Biodiversity loss through speciation collapse: Mechanisms, warning signals, and possible rescue pub prog_eep Speciation; assortative mating; hybridization; species diversity; warning signals 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. 2019-08 published Wiley-Blackwell 10.1111/evo.13736 39 public Evolution 73 8 1504-1516 TRUE 1558-5646 FALSE no info:eu-repo/semantics/article