Equilibrium and non-equilibrium phases in the radiation of Hakea and the drivers of diversity in Mediterranean-type ecosystems
dc.contributor.author | Skeels, Alexander | |
dc.contributor.author | Cardillo, Marcel | |
dc.date.accessioned | 2021-07-16T01:55:48Z | |
dc.date.available | 2021-07-16T01:55:48Z | |
dc.date.issued | 2019-07 | |
dc.description.abstract | Mediterranean‐type ecosystems (MTEs) contain exceptional plant diversity. Explanations for this diversity are usually classed as either “equilibrium,” with elevated MTE diversity resulting from greater ecological carrying capacities, or “non‐equilibrium,” with MTEs having a greater accumulation of diversity over time than other types of ecosystems. These models have typically been considered as mutually exclusive. Here, we present a trait‐based explanatory framework that incorporates both equilibrium and non‐equilibrium dynamics. Using a large continental Australian plant radiation (Hakea) as a case study, we identify traits associated with niche partitioning in coexisting species (α‐traits) and with environmental filtering (β‐traits), and reconstruct the mode and relative timing of diversification of these traits. Our results point to a radiation with an early non‐equilibrium phase marked by divergence of β‐traits as Hakea diversified exponentially and expanded from the southwest Australian MTE into biomes across the Australian continent. This was followed from seven million years ago by an equilibrium phase, marked by diversification of α‐traits and a slowdown in lineage diversification as MTE‐niches became saturated. These results suggest that processes consistent with both equilibrium and non‐equilibrium models have been important during different stages of the radiation of Hakea, and together they provide a richer explanation of present‐day diversity patterns. | en_AU |
dc.description.sponsorship | A.S. is supported by the Australian Government Research Training Program. M.C. acknowledges support from the Australian Research Council (Grant DP160103942). The study has been supported by theTRY initiative on plant traits (http://www.try-db.org). | en_AU |
dc.identifier.issn | 0014-3820 | en_AU |
dc.identifier.uri | http://hdl.handle.net/1885/240629 | |
dc.provenance | https://v2.sherpa.ac.uk/id/publication/6866..."Author accepted manuscript can be made open access on non-commercial institutional repository after 12 month embargo" from SHERPA/RoMEO site (as at 16.7.2021). | en_AU |
dc.publisher | Society for the Study of Evolution | en_AU |
dc.relation | http://purl.org/au-research/grants/arc/DP160103942 | en_AU |
dc.rights | © 2019 The Author(s) and The Society for the Study of Evolution. | en_AU |
dc.source | Evolution | en_AU |
dc.subject | Adaptive radiation | en_AU |
dc.subject | biodiversity hotspot | en_AU |
dc.subject | diversification | en_AU |
dc.subject | proteaceae | en_AU |
dc.subject | slowdown | en_AU |
dc.subject | trait evolution | en_AU |
dc.title | Equilibrium and non-equilibrium phases in the radiation of Hakea and the drivers of diversity in Mediterranean-type ecosystems | en_AU |
dc.type | Journal article | en_AU |
dcterms.accessRights | Open Access | en_AU |
dcterms.dateAccepted | 2019-04-29 | |
local.bibliographicCitation.issue | 7 | en_AU |
local.bibliographicCitation.lastpage | 1410 | en_AU |
local.bibliographicCitation.startpage | 1392 | en_AU |
local.contributor.affiliation | Skeels, Alexander, College of Science, ANU | en_AU |
local.contributor.affiliation | Cardillo, Marcel, College of Science, ANU | en_AU |
local.contributor.authoremail | u4673846@anu.edu.au | en_AU |
local.contributor.authoruid | Skeels, Alexander, u4673846 | en_AU |
local.contributor.authoruid | Cardillo, Marcel, u4578670 | en_AU |
local.description.notes | Added manually as didn't import from ARIES | en_AU |
local.identifier.absfor | 310410 | en_AU |
local.identifier.absfor | 310402 | en_AU |
local.identifier.absfor | 310412 | en_AU |
local.identifier.ariespublication | u9511635xPUB1942 | en_AU |
local.identifier.citationvolume | 73 | en_AU |
local.identifier.doi | 10.1111/evo.13769 | en_AU |
local.identifier.uidSubmittedBy | u5031974 | en_AU |
local.publisher.url | https://onlinelibrary.wiley.com/ | en_AU |
local.type.status | Accepted Version | en_AU |
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