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Consistent community genetic effects in the context of strong environmental and temporal variation in Eucalyptus

journal contribution
posted on 2023-05-20, 22:48 authored by Gosney, BJ, Bradley PottsBradley Potts, Lynette ForsterLynette Forster, Whiteley, C, Julianne O'Reilly-WapstraJulianne O'Reilly-Wapstra
Provenance translocations of tree species are promoted in forestry, conservation, and restoration in response to global climate change. While this option is driven by adaptive considerations, less is known of the effects translocations can have on dependent communities. We investigated the relative importance and consistency of extended genetic effects in Eucalyptus using two species - E. globulus and E. pauciflora. In E. globulus, the dependent arthropod and pathogen canopy communities were quantified based on the abundance of 49 symptoms from 722 progeny from 13 geographic sub-races across 2 common gardens. For E. pauciflora, 6 symptoms were quantified over 2 years from 238 progeny from 16 provenances across 2 common gardens. Genetic effects significantly influenced communities in both species. However, site and year effects outweighed genetic effects with site explaining approximately 3 times the variation in community traits in E. globulus and site and year explaining approximately 6 times the variation in E. pauciflora. While the genetic effect interaction terms were significant in some community traits, broad trends in community traits associated with variation in home-site latitude for E. globulus and home-site altitude for E. pauciflora were evident. These broad-scale trends were consistent with patterns of adaptive differentiation within each species, suggesting there may be extended consequences of local adaptation. While small in comparison to site and year, the consistency of genetic effects highlights the importance of provenance choice in tree species, such as Eucalyptus, as adaptive divergence among provenances may have significant long-term effects on biotic communities.

Funding

Australian Research Council

History

Publication title

Oecologia

Volume

195

Pagination

367-382

ISSN

0029-8549

Department/School

School of Natural Sciences

Publisher

Springer-Verlag

Place of publication

175 Fifth Ave, New York, USA, Ny, 10010

Rights statement

© The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature 2021

Repository Status

  • Restricted

Socio-economic Objectives

Terrestrial biodiversity

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