Which provenance and where? Seed sourcing strategies for revegetation in a changing environment
Revegetation is one practical application of science that should ideally aim to combine ecology with evolution to maximise biodiversity and ecosystem outcomes. The strict use of locally sourced seed in revegetation programs is widespread and is based on the expectation that populations are locally adapted. This practice does not fully integrate two global drivers of ecosystem change and biodiversity loss: habitat fragmentation and climate change. Here, we suggest amendments to existing strategies combined with a review of alternative seed-sourcing strategies that propose to mitigate against these drivers. We present a provenancing selection guide based on confidence surrounding climate change distribution modelling and data on population genetic and/or environmental differences between populations. Revegetation practices will benefit from greater integration of current scientific developments and establishment of more long-term experiments is key to improving the long-term success. The rapid growth in carbon and biodiversity markets creates a favourable economic climate to achieve these outcomes.
KeywordsClimate change Habitat fragmentation Inbreeding Local adaptation Outbreeding depression Plant genetic resources Revegetation
This work was supported by Australian Research Council Linkage project (LP110200805) and South Australian Premier’s Science and Research Fund awarded to AJL, NCCARF Travel Grants awarded to MFB, and the Native Vegetation Council of South Australia (grant 09/10/27), Nature Foundation SA Inc., Australian Geographic Society, Biological Society of South Australia, Field Naturalist Society of South Australia, Wildlife Preservation Society of Australia awarded to MFB, MGG, KMO and AJL. The authors would like to thank the Editors and two anonymous reviewers whose suggestions greatly improved this manuscript.
- Breed MF, Marklund MHK, Ottewell KM, Gardner MG, Harris JCB, Lowe AJ (in press) Pollen diversity matters: revealing the neglected effect of pollen diversity on fitness in fragmented landscapes. Mol Ecol. doi: 10.1111/mec.12056
- Broadhurst LM, Lowe A, Coates DJ, Cunningham SA, McDonald M, Vesk PA, Yates C (2008) Seed supply for broadscale restoration: maximizing evolutionary potential. Evol Appl 1:587–597Google Scholar
- Clarke MF, Avitabile SC, Brown L, Callister KE, Haslem A, Holland GJ, Kelly LT, Kenny SA, Nimmo DG, Spence-Bailey LM, Taylor RS, Watson SJ, Bennett AF (2010) Ageing mallee eucalypt vegetation after fire: insights for successional trajectories in semi-arid mallee ecosystems. Aust J Bot 58:363–372CrossRefGoogle Scholar
- Godefroid S, Piazza C, Rossi G, Buord S, Stevens A-D, Aguraiuja R, Cowell C, Weekley CW, Vogg G, Iriondo JM, Johnson I, Dixon B, Gordon D, Magnanon S, Valentin B, Bjureke K, Koopman R, Vicens M, Virevaire M, Vanderborght T (2011) How successful are plant species reintroductions? Biol Conserv 144:672–682CrossRefGoogle Scholar
- Guerin GR, Lowe AJ (in press) Multi-species distribution modelling highlights the Adelaide Geosyncline, South Australia, as an important continental-scale arid-zone refugium. Austral Ecol. doi: 10.1111/j.1442-9993.2012.02425.x
- Jennings J (2009) Natural history of the Riverland and Murraylands. Royal Society of South Australia Inc., Adelaide, SA, AustraliaGoogle Scholar
- SER (2004) The SER international primer on ecological restoration, Version 2. Society for Ecological Restoration Science and Policy Working Group, Tucson, ArizonaGoogle Scholar
- Slee A, Brooker M, Duffy S, West J (2006) EUCLID: eucalyptus of Australia, 3rd edn. Centre for Plant Biodiversity Research, CanberraGoogle Scholar
- Weinreich DM, Watson RA, Chao L, Harrison R (2009) Sign epistasis and genetic constraint on evolutionary trajectories. Evolution 59:1165–1174Google Scholar