Ecosystems

, Volume 17, Issue 2, pp 258–270 | Cite as

Dominant Drivers of Seedling Establishment in a Fire-Dependent Obligate Seeder: Climate or Fire Regimes?

  • Annabel L. Smith
  • David Blair
  • Lachlan McBurney
  • Sam C. Banks
  • Philip S. Barton
  • Wade Blanchard
  • Don A. Driscoll
  • A. Malcolm Gill
  • David B. Lindenmayer
Article

Abstract

Climate change is causing fire regime shifts in ecosystems worldwide. Plant species with regeneration strategies strongly linked to a fire regime, such as obligate seeders, may be particularly threatened by these changes. It is unclear whether changes in fire regimes or the direct effects of climate change will be the dominant threats to obligate seeders in future. We investigated the relative importance of fire-related variables (fire return interval and fire severity) and environmental factors (climate and topography) on seedling establishment in the world’s tallest angiosperm, an obligate seeder, Eucalyptus regnans. Throughout its range, this species dominates the wet montane forests of south-eastern Australia and plays a keystone role in forest structure. Following major wildfires, we investigated seedling establishment in E. regnans within 1 year of fire as this is a critical stage in the regeneration niche of obligate seeders. Seedling presence and abundance were strongly related to the occurrence of fire but not to variation in fire severity (moderate vs. high severity). Seedling abundance increased with increasing fire return interval (range 26–300 years). First-year seedling establishment was also strongly associated with low temperatures and with high elevations, high precipitation and persistent soil water availability. Our results show that both climate and fire regimes are strong drivers of E. regnans seedling establishment. The predicted warming and drying of the climate might reduce the regeneration potential for some obligate seeders in future and these threats are likely to be compounded by changes in fire regimes, particularly increases in fire frequency.

Keywords

climate change disturbance fire return interval fire severity forest management plant functional type range shift regeneration niche 

References

  1. Ashton DH. 1975. Studies of flowering behaviour in Eucalyptus regnans F. Muell. Aust J Bot 23:399–411.CrossRefGoogle Scholar
  2. Ashton DH. 1976. The development of even-aged stands of Eucalyptus regnans F. Muell. in central Victoria. Aust J Bot 24:397–414.CrossRefGoogle Scholar
  3. Ashton DH. 1981. Fire in tall open-forests (wet sclerophyll forests). In: Gill AM, Groves RH, Noble IR, Eds. Fire and the Australian Biota. Canberra: Australian Academy of Science. p 339–66.Google Scholar
  4. Ashton DH, Attiwill PM. 1994. Tall open-forests. In: Groves RH, Ed. Australian vegetation. Melbourne: Cambridge University Press. p 157–96.Google Scholar
  5. Ashton DH, Martin DG. 1996. Regeneration in a pole-stage forest of Eucalyptus regnans subjected to different fire intensities in 1982. Aust J Bot 44:393–410.CrossRefGoogle Scholar
  6. Ashton DH, Turner JS. 1979. Studies on the light compensation point of Eucalyptus regnans F. Muell. Aust J Bot 27:589–607.CrossRefGoogle Scholar
  7. Ashton DH, Willis EJ. 1982. Antagonisms in the regeneration of Eucalyptus regnans in the mature forest. In: Newman EI, Ed. The plant community as a working mechanism. London: British Ecological Society. p 113–28.Google Scholar
  8. Bauweraerts I, Wertin TM, Ameye M, McGuire MA, Teskey RO, Steppe K. 2013. The effect of heat waves, elevated [CO2] and low soil water availability on northern red oak (Quercus rubra L.) seedlings. Glob Change Biol 19:517–28.CrossRefGoogle Scholar
  9. Berland A, Shuman B, Manson SM. 2011. Simulated importance of dispersal, disturbance, and landscape history in long-term ecosystem change in the Big Woods of Minnesota. Ecosystems 14:398–414.CrossRefGoogle Scholar
  10. Beven KJ, Kirkby MJ. 1979. A physically based, variable contributing area model of basin hydrology. Hydrol Sci Bull 24:43–69.CrossRefGoogle Scholar
  11. Boeye J, Travis JMJ, Stoks R, Bonte D. 2013. More rapid climate change promotes evolutionary rescue through selection for increased dispersal distance. Evol Appl 6:353–64.PubMedCentralPubMedCrossRefGoogle Scholar
  12. Boland DJ, Brooker MIH, Chippendale GM, Hall N, Hyland BPM, Johnston RD, Kleinig DA, McDonald MW, Turner JD. 2006. Forest trees of Australia. 5th edn. Melbourne: CSIRO Publishing.Google Scholar
  13. Bradstock RA. 2010. A biogeographic model of fire regimes in Australia: current and future implications. Glob Ecol Biogeogr 19:145–58.CrossRefGoogle Scholar
  14. Bradstock RA, Bedward M, Cohn JS. 2006. The modelled effects of differing fire management strategies on the conifer Callitris verrucosa within semi-arid mallee vegetation in Australia. J Appl Ecol 43:281–92.CrossRefGoogle Scholar
  15. Bradstock RA, Williams RJ, Gill AM. 2012. Future fire regimes of Australian ecosystems: new perspectives on enduring questions of management. In: Bradstock RA, Gill AM, Williams RJ, Eds. Flammable Australia: fire regimes, biodiversity and ecosystems in a changing world. Collingwood, VIC: CSIRO Publishing. p 307–24.Google Scholar
  16. Brook BW, Sodhi NS, Bradshaw CJA. 2008. Synergies among extinction drivers under global change. Trends Ecol Evol 23:453–60.PubMedCrossRefGoogle Scholar
  17. Cary GJ, Bradstock RA, Gill AM, Williams RJ. 2012. Global change and fire regimes in Australia. In: Bradstock RA, Gill AM, Williams RJ, Eds. Flammable Australia: fire regimes, biodiversity and ecosystems in a changing world. Collingwood, VIC: CSIRO Publishing. p 149–69.Google Scholar
  18. Chambers DP, Attiwill PM. 1994. The ash-bed effect in Eucalyptus regnans forest: chemical, physical and microbiological changes in soil after heating or partial sterilisation. Aust J Bot 42:739–49.CrossRefGoogle Scholar
  19. Christensen JH, Hewitson B, Busuioc A, Chen A, Gao X, Held I, Jones R, Kolli RK, Kwon W-T, Laprise R, Magaña Rueda V, Mearns L, Menéndez CG, Räisänen J, Rinke A, Sarr A, Whetton P. 2007. Regional climate projections. Solomon S et al., editors. Climate change 2007: the physical science basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge: Cambridge University Press. pp. 847–940Google Scholar
  20. Cunningham TM. 1957. Seed production and seed fall of Eucalyptus regnans (F. Muell). Aust For 21:30–9.CrossRefGoogle Scholar
  21. Davies GM, Smith AA, MacDonald AJ, Bakker JD, Legg CL. 2010. Fire intensity, fire severity and ecosystem response in heathlands: factors affecting the regeneration of Calluna vulgaris. J Appl Ecol 47:356–65.CrossRefGoogle Scholar
  22. DNRE. 1998. Forest management plan for the Central Highlands. Melbourne: Department of Natural Resources and Environment, State Government of Victoria.Google Scholar
  23. Driscoll DA, Felton A, Gibbons P, Felton AM, Munro NT, Lindenmayer DB. 2012. Priorities in policy and management when existing biodiversity stressors interact with climate-change. Clim Change 111:533–57.CrossRefGoogle Scholar
  24. Driscoll DA, Lindenmayer DB, Bennett AF, Bode M, Bradstock RA, Cary GJ, Clarke MF, Dexter N, Fensham R, Friend G, Gill AM, James S, Kay G, Keith DA, MacGregor C, Russell-Smith J, Salt D, Watson JEM, Williams RJ, York A. 2010. Fire management for biodiversity conservation: key research questions and our capacity to answer them. Biol Conserv 143:1928–39.CrossRefGoogle Scholar
  25. Dullinger S, Dirnböck T, Grabherr G. 2004. Modelling climate change-driven treeline shifts: relative effects of temperature increase, dispersal and invasibility. J Ecol 92:241–52.CrossRefGoogle Scholar
  26. Dullinger S, Gattringer A, Thuiller W, Moser D, Zimmermann NE, Guisan A, Willner W, Plutzar C, Leitner M, Mang T, Caccianiga M, Dirnböck T, Ertl S, Fischer A, Lenoir J, Svenning J-C, Psomas A, Schmatz DR, Silc U, Vittoz P, Hülber K. 2012. Extinction debt of high-mountain plants under twenty-first-century climate change. Nat Clim Change 2:619–22.CrossRefGoogle Scholar
  27. Fisher JL, Loneragan WA, Dixon K, Delaney J, Veneklaas EJ. 2009. Altered vegetation structure and composition linked to fire frequency and plant invasion in a biodiverse woodland. Biol Conserv 142:2270–81.CrossRefGoogle Scholar
  28. Foden W, Midgley GF, Hughes G, Bond WJ, Thuiller W, Hoffman MT, Kaleme P, Underhill LG, Rebelo A, Hannah L. 2007. A changing climate is eroding the geographical range of the Namib Desert tree Aloe through population declines and dispersal lags. Divers Distrib 13:645–53.CrossRefGoogle Scholar
  29. Fordham DA, Akçakaya HR, Araújo MB, Elith J, Keith DA, Pearson R, Auld TD, Mellin C, Morgan JW, Regan TJ, Tozer M, Watts MJ, White M, Wintle BA, Yates C, Brook BW. 2012. Plant extinction risk under climate change: are forecast range shifts alone a good indicator of species vulnerability to global warming? Glob Change Biol 18:1357–71.CrossRefGoogle Scholar
  30. Franklin J. 2010. Moving beyond static species distribution models in support of conservation biogeography. Divers Distrib 16:321–30.CrossRefGoogle Scholar
  31. Franklin J, Syphard AD, He HS, Mladenoff DJ. 2005. Altered fire regimes affect landscape patterns of plant succession in the foothills and mountains of southern California. Ecosystems 8:885–98.CrossRefGoogle Scholar
  32. Fyllas NM, Troumbis AY. 2009. Simulating vegetation shifts in north-eastern Mediterranean mountain forests under climatic change scenarios. Glob Ecol Biogeogr 18:64–77.CrossRefGoogle Scholar
  33. Gill AM. 1981. Adaptive responses of Australian vascular plant species to fires. In: Gill AM, Groves RH, Noble IR, Eds. Fire and the Australian Biota. Canberra: Australian Academy of Science. p 243–72.Google Scholar
  34. Gill AM, Catling PC. 2002. Fire regimes and biodiversity of forested landscapes of southern Australia. In: Bradstock RA, Williams JE, Gill AM, Eds. Flammable Australia: the fire regimes and biodiversity of a continent. Cambridge: Cambridge University Press. p 351–69.Google Scholar
  35. Hutchinson MF. 2011. ANUDEM version 5.3, user guide. Canberra: Fenner School of Environment and Society, Australian National University.Google Scholar
  36. Jackman S. 2012. pscl: Political Science Computational Laboratory, Stanford University. Stanford, CA: Department of Political Science.Google Scholar
  37. Keith DA, Akçakaya HR, Thuiller W, Midgley GF, Pearson RG, Phillips SJ, Regan HM, Araújo MB, Rebelo TG. 2008. Predicting extinction risks under climate change: coupling stochastic population models with dynamic bioclimatic habitat models. Biol Lett 4:560–3.PubMedCentralPubMedCrossRefGoogle Scholar
  38. Kharuk VI, Ranson KJ, Im ST, Vdovin AS. 2010. Spatial distribution and temporal dynamics of high-elevation forest stands in southern Siberia. Glob Ecol Biogeogr 19:822–30.CrossRefGoogle Scholar
  39. Kitzberger T, Aráoz E, Gowda JH, Mermoz M, Morales JM. 2012. Decreases in fire spread probability with forest age promotes alternative community states, reduced resilience to climate variability and large fire regime shifts. Ecosystems 15:97–112.CrossRefGoogle Scholar
  40. Land Conservation Council. 1994. Melbourne area district 2 review: final recommendations. Melbourne: Land Conservation Council.Google Scholar
  41. Launonen TM, Ashton DH, Keane PJ. 1999. The effect of regeneration burns on the growth, nutrient acquisition and mycorrhizae of Eucalyptus regnans F. Muell. (mountain ash) seedlings. Plant Soil 210:273–83.CrossRefGoogle Scholar
  42. Lawson DM, Regan HM, Zedler PH, Franklin J. 2010. Cumulative effects of land use, altered fire regime and climate change on persistence of Ceanothus verrucosus, a rare, fire-dependent plant species. Glob Change Biol 16:2518–29.Google Scholar
  43. Lenoir J, Gégout JC, Marquet PA, de Ruffray P, Brisse H. 2008. A significant upward shift in plant species optimum elevation during the 20th Century. Science 320:1768–71.PubMedCrossRefGoogle Scholar
  44. Lindenmayer DB. 2009. Forest pattern and ecological process. A synthesis of 25 years of research. Melbourne: CSIRO Publishing.Google Scholar
  45. Lindenmayer DB, Blanchard W, McBurney L, Blair D, Banks PB, Likens GE, Franklin JF, Laurance WF, Stein JAR, Gibbons P. 2012a. Interacting factors driving a major loss of large trees with cavities in a forest ecosystem. PLoS One 7(10):e41864.PubMedCentralPubMedCrossRefGoogle Scholar
  46. Lindenmayer DB, Cunningham RB, Donnelly CF, Franklin JF. 2000. Structural features of old-growth Australian montane ash forests. For Ecol Manag 134:189–204.CrossRefGoogle Scholar
  47. Lindenmayer DB, Cunningham RB, MacGregor C, Incoll RD, Michael D. 2003. A survey design for monitoring the abundance of arboreal marsupials in the central highlands of Victoria. Biol Conserv 110:161–7.CrossRefGoogle Scholar
  48. Lindenmayer DB, Hobbs RJ, Likens GE, Krebs CJ, Banks SC. 2011. Newly discovered landscape traps produce regime shifts in wet forests. Proc Natl Acad Sci USA 108:15887–91.PubMedCrossRefGoogle Scholar
  49. Lindenmayer DB, Laurance WF, Franklin JF. 2012b. Global decline in large old trees. Science 338:1305–6.PubMedCrossRefGoogle Scholar
  50. Lindenmayer DB, Likens GE, Franklin JF. 2010. Rapid responses to facilitate ecological discoveries from major disturbances. Front Ecol Environ 8:527–32.CrossRefGoogle Scholar
  51. Lindenmayer DB, Ough K. 2006. Salvage logging in the montane ash eucalypt forests of the Central Highlands of Victoria and its potential impacts on biodiversity. Conserv Biol 20:1005–15.PubMedCrossRefGoogle Scholar
  52. Liu Y, Stanturf J, Goodrick S. 2010. Trends in global wildfire potential in a changing climate. For Ecol Manag 259:685–97.CrossRefGoogle Scholar
  53. Mackey BG, Lindenmayer DB, Gill AM, McCarthy MA, Lindesay J. 2002. Wildlife, fire and future climate: a forest ecosystem analysis. Collingwood: CSIRO Publishing.Google Scholar
  54. Maia P, Pausas JG, Vasques A, Keizer JJ. 2012. Fire severity as a key factor in post-fire regeneration of Pinus pinaster (Ait.) in Central Portugal. Ann For Sci 69:489–98.CrossRefGoogle Scholar
  55. McCarthy MA, Gill AM, Lindenmayer DB. 1999. Fire regimes in mountain ash forest: evidence from forest age structure, extinction models and wildlife habitat. For Ecol Manag 124:193–203.CrossRefGoogle Scholar
  56. Metz MR. 2012. Does habitat specialization by seedlings contribute to the high diversity of a lowland fain forest? J Ecol 100:969–79.CrossRefGoogle Scholar
  57. Moen J, Cairns DM, Lafon CW. 2008. Factors structuring the treeline ecotone in Fennoscandia. Plant Ecol Divers 1:77–87.CrossRefGoogle Scholar
  58. Moreira B, Tormo J, Estrelles E, Pausas JG. 2010. Disentangling the role of heat and smoke as germination cues in Mediterranean Basin flora. Ann Bot 105:627–35.PubMedCrossRefGoogle Scholar
  59. Nathan R, Horvitz N, He Y, Kuparinen A, Schurr FM, Katul GG. 2011. Spread of North American wind-dispersed trees in future environments. Ecol Lett 14:211–19.PubMedCrossRefGoogle Scholar
  60. Nathan R, Schurr FM, Spiegel O, Steinitz O, Trakhtenbrot A, Tsoar A. 2008. Mechanisms of long-distance seed dispersal. Trends Ecol Evol 23:638–47.PubMedCrossRefGoogle Scholar
  61. Otto R, García-del-Rey E, Muñoz PG, Fernández-Palacios JM. 2010. The effect of fire severity on first-year seedling establishment in a Pinus canariensis forest on Tenerife, Canary Islands. Eur J For Res 129:499–508.CrossRefGoogle Scholar
  62. Pausas JG, Bradstock RA, Keith DA, Keeley JE, Network GF. 2004. Plant functional traits in relation to fire in crown-fire ecosystems. Ecology 85:1085–100.CrossRefGoogle Scholar
  63. Pausas JG, Ouadah N, Ferran A, Gimeno T, Vallejo R. 2003. Fire severity and seedling establishment in Pinus halepensis woodlands, eastern Iberian Peninsula. Plant Ecol 169:205–13.CrossRefGoogle Scholar
  64. Pérez-Ramos IM, Urbieta IR, Zavala MA, Marañón T. 2012. Ontogenetic conflicts and rank reversals in two Mediterranean oak species: implications for coexistence. J Ecol 100:467–77.CrossRefGoogle Scholar
  65. R Development Core Team. 2013. R: a language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. http://www.R-project.org
  66. Regan HM, Crookston JB, Swab R, Franklin J, Lawson DM. 2010. Habitat fragmentation and altered fire regime create trade-offs for an obligate seeding shrub. Ecology 91:1114–23.PubMedCrossRefGoogle Scholar
  67. Romme WH, Boyce MS, Gresswell R, Merrill EH, Minshall GW, Whitlock C, Turner MG. 2011. Twenty years after the 1998 Yellowstone fires: lessons about disturbance and ecosystems. Ecosystems 14:1196–215.CrossRefGoogle Scholar
  68. Russell-Smith J, Edwards AC, Price OF. 2012. Simplifying the savanna: the trajectory of fire-sensitive vegetation mosaics in northern Australia. J Biogeogr 39:1303–17.CrossRefGoogle Scholar
  69. Schumacher S, Bugmann H. 2006. The relative importance of climatic effects, wildfires and management for future forest landscape dynamics in the Swiss Alps. Glob Change Biol 12:1435–50.CrossRefGoogle Scholar
  70. Silvestrini RA, Soares-Filho BS, Nepstad D, Coe M, Rodrigues H, Assunção R. 2011. Simulating fire regimes in the Amazon in response to climate change and deforestation. Ecol Appl 21:1573–90.PubMedCrossRefGoogle Scholar
  71. Stankova TV, Diéguez-Aranda U. 2013. Simple and reliable models of density decrease with dominant height growth for even-aged natural stands and plantations. Ann For Sci 70:621–30.CrossRefGoogle Scholar
  72. Swab RM, Regan HM, Keith DA, Regan TJ, Ooi MKJ. 2012. Niche models tell half the story: spatial context and life-history traits influence species responses to global change. J Biogeogr 39:1266–77.CrossRefGoogle Scholar
  73. Tng DYP, Williamson GJ, Jordan GJ, Bowman DMJS. 2012. Giant eucalypts—globally unique fire-adapted rain-forest trees? New Phytol 196:1001–14.CrossRefGoogle Scholar
  74. Vivian LM, Cary GJ, Bradstock RA, Gill AM. 2008. Influence of fire severity on the regeneration, recruitment and distribution of eucalypts in the Cotter River Catchment, Australian Capital Territory. Austral Ecol 33:55–67.CrossRefGoogle Scholar
  75. Welsh AH, Cunningham RB, Donnelly CF, Lindenmayer DB. 1996. Modelling the abundance of rare species: statistical models for counts with extra zeros. Ecol Model 88:297–308.CrossRefGoogle Scholar
  76. Westerling AL, Turner MG, Smithwick EAH, Romme WH, Ryan MG. 2011. Continued warming could transform Greater Yellowstone fire regimes by mid-21st century. Proc Natl Acad Sci USA 108:13165–70.PubMedCrossRefGoogle Scholar
  77. Weston CJ, Attiwill PM. 1990. Effects of fire and harvesting on nitrogen transformations and ionic mobility in soils of Eucalyptus regnans forests of south-eastern Australia. Oecologia 83:20–6.CrossRefGoogle Scholar
  78. Wood SW, Hua Q, Allen KJ, Bowman DMJS. 2010. Age and growth of a fire prone Tasmanian temperate old-growth forest stand dominated by Eucalyptus regnans, the world’s tallest angiosperm. For Ecol Manag 260:438–47.CrossRefGoogle Scholar
  79. Woodruff DR, Bond BJ, Ritchie GA, Scott W. 2002. Effects of stand density of the growth of young Douglas-fir trees. Can J For Res 32:420–7.CrossRefGoogle Scholar
  80. Xu T, Hutchinson MF. 2011. ANUCLIM version 6.1, user guide. Canberra: Fenner School of Environment and Society, Australian National University.Google Scholar
  81. Zeileis A, Kleiber C, Jackman S. 2008. Regression models for count data in R. J Stat Softw 27:1–21.Google Scholar

Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Annabel L. Smith
    • 1
    • 2
  • David Blair
    • 2
  • Lachlan McBurney
    • 2
  • Sam C. Banks
    • 1
    • 2
  • Philip S. Barton
    • 1
    • 2
  • Wade Blanchard
    • 1
    • 2
  • Don A. Driscoll
    • 1
    • 2
  • A. Malcolm Gill
    • 2
  • David B. Lindenmayer
    • 1
    • 2
  1. 1.Australian Research Council Centre of Excellence for Environmental Decisions and the National Environmental Research Program Environmental Decisions HubThe Australian National UniversityCanberraAustralia
  2. 2.Fenner School of Environment and SocietyThe Australian National UniversityCanberraAustralia

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