Abstract
Ecotones, representing the transition zones between species or communities, have been suggested as focal points for detecting early shifts in vegetation composition due to anthropogenic impact. Here we examined if changes in ecotone location or properties can be used as reliable indicators of hydrological change in temperate wetland communities. We examined 38 woodland-wetland-woodland transitions, distributed across four sites with different anthropogenic disturbance histories and hydrological traits. We tested whether: 1) the ecotones are associated with environmental gradients, and 2) the location or properties of these ecotones change with disturbance history. Well-defined ecotones were associated with steep gradients in soil depth and soil moisture. Most ecotones showed a change in vegetation from hydrophytic to dryland species. There was also some evidence that in highly disturbed sites the link between ecotones and environmental gradients was less apparent. By sampling across boundaries we can better understand the factors controlling the distribution of species. This allows us to make better predictions about the impacts of anthropogenic change in wetland communities. By investigating the transitions between different vegetation communities we were able to highlight key indicators that could be used to monitor these ecologically sensitive and diverse wetland communities.
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Abbreviations
- Ate:
-
Amphibious, fluctuation-tolerating, emergent
- ATw:
-
Amphibious, fluctuation-tolerating, woody
- Tda:
-
Terrestrial damp
- Tdr:
-
Terrestrial dry
- VWC:
-
Volumetric Water Content
- WPFG:
-
Water Plant Functional Groups
References
Allen, C.D. and Breshears, D.D. 1998. Drought-induced shift of a forest–woodland ecotone: Rapid landscape response to climate variation. Proc. Natl. Acad. Sci. 95: 14839–14842.
Aune, S., Hofgaard, A. and Söderström, L. 2011. Contrasting climate- and land-use-driven tree encroachment patterns of subarctic tundra in northern Norway and the Kola Peninsula. Can. J. For. Res. 41: 437–449.
Batllori, E., Camarero, J.J. and Gutiérrez, E. 2010. Current regeneration patterns at the tree line in the Pyrenees indicate similar recruitment processes irrespective of the past disturbance regime. J. Biogeogr. 37: 1938–1950.
Benson, D. and Baird, I.R.C. 2012. Vegetation, fauna and groundwa-ter interrelations in low nutrient temperate montane peat swamps in the upper Blue Mountains, New South Wales. Cunninghamia 12: 267–307.
Brownstein, G., Döbert, T., Dobbie, L., Hashim, N. and Wilson, J.B. 2013. Functional traits shed new light on the nature of ecotones: a study across a bog-to-forest sequence. Community Ecol. 14: 31–40.
Cadenasso, M.L., Pickett, S.T.A., Weathers, K.C., Bell, S.S., Benning, T.L., Carreiro, M.M. and Dawson, T.E. 2003. An interdisciplinary and synthetic approach to ecological boundaries. BioScience 53: 717–722.
Campbell, C.J., Johns, C.V. and Nielsen, D.L. 2014. The value of plant functional groups in demonstrating and communicating vegetation responses to environmental flows. Freshw. Biol. 59: 858–869.
Carter, V. , Gammon, P.T. and Garrett, M.K. 1994. Ecotone dynamics and boundary determination in the Great Dismal Swamp. Ecol. Appl. 4: 189–203.
Casanova, M.T. 2011. Using water plant functional groups to investigate environmental water requirements. Freshw. Biol. 56: 2637–2652.
Cornet, A.F., Montana, C., Delhoume, J.P. and Lopez-Portillo, J. 1992. Water flows and the dynamics of desert vegetation stripes. Landscape boundaries: Consequences for biotic diversity and ecological flows, New York: Springer-Verlag, pp. 227–345.
Danz, N.P., Frelich, L.E., Reich, P.B. and Niemi, G.J. 2013. Do vegetation boundaries display smooth or abrupt spatial transitions along environmental gradients? Evidence from the prairie–forest biome boundary of historic Minnesota, USA. J. Veg. Sci. 24: 1129–1140.
DEC. 2006. The Vegetation of the Western Blue Mountains. Hurstville: Department of Environment and Conservation.
Erdős, L., Gallé, R., Bátori, Z., Papp, M. and Körmöczi, L. 2011. Properties of shrubforest edges: a case study from South Hungary. Cent. Eur. J. Biol. 6: 639–658.
Erdős, L., Gallé, R., Körmöczi, L. and Bátori, Z. 2013. Species composition and diversity of natural forest edges: edge responses and local edge species. Community Ecol. 14: 48–58.
Fox, J. and Weisberg, S. 2010. An R Companion to Applied Regression. SAGE.
Grime, J.P. 1973. Competitive exclusion in herbaceous vegetation. Nat. UK 242: 344–347.
Hofgaard, A., Harper, K.A. and Golubeva, E. 2012. The role of the circumarctic forest–tundra ecotone for Arctic biodiversity. Biodiversity 13: 174–181.
Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation. Cambridge University Press, Cambridge.
Kirkman, L.K., Drew, M.B., West, L.T. and Blood, E.R. 1998. Ecotone characterization between upland longleaf pine/wire-grass stands and seasonally-ponded isolated. Wetlands 18: 346– 364.
Koleff, P., Gaston, K.J. and Lennon, J.J. 2003. Measuring beta diversity for presence–absence data. J. Anim. Ecol. 72: 367–382.
Lek-Ang, S., Park, Y-S., Ait-Mouloud, S. and Deharveng, L. 2007. Collembolan communities in a peat bog versus surrounding forest analyzed by using self-organizing map. Ecol. Model. 203: 9–17.
Liu, H. and Cui, H. 2009. Patterns of plant biodiversity in the woodland-steppe ecotone in southeastern Inner Mongolia. Contemp. Probl. Ecol. 2: 322–329.
Lloyd, K.M., McQueen, A.A.M., Lee, B.J., Wilson, R.C.B., Walker, S. and Wilson, J.B. 2000. Evidence on ecotone concepts from switch, environmental and anthropogenic ecotones. J. Veg. Sci. 11: 903–910.
Mathisen, I.E., Mikheeva, A., Tutubalina, O.V., Aune, S. and Hofgaard, A. 2014. Fifty years of tree line change in the Khibiny Mountains, Russia: advantages of combined remote sensing and dendroecological approaches. Appl. Veg. Sci. 17: 6–16.
McIntire, E.J.B. and Fortin, M-J. 2006. Structure and function of wildfire and mountain pine beetle forest boundaries. Ecography 29: 309–318.
Mills, A.J., Rogers, K.H., Stalmans, M. and Witkowski, E.T.F. 2006. A Framework for Exploring the Determinants of Savanna and Grassland Distribution. BioScience 56: 579–589.
Moen, J., Cairns, D.M. and Lafon, C.W. 2008. Factors structuring the treeline ecotone in Fennoscandia. Plant Ecol. Divers. 1: 77–87.
Noble, I.R. and Gitay, H. 1996. A functional classification for predicting the dynamics of landscapes. J. Veg. Sci. 7: 329–336.
OEH. 2012. Vegetation Information Systems: Maps. http://www.en-vironment.nsw.gov.au/research/VISmap.htm.
Oksanen, J., Blanchet, F.G., Kindt, R., Legendre, P., O’Hara, R.B., Simpson, G.L., Solymos, P., Henry, M., Stevens, H. and Wagner, H. 2011. vegan: Community Ecology Package version 1.17–8.
R Development Core Team. 2011. R: A Language and Environment for Statistical Computing. Vienna, Austria:
Ries, L., Jr. R.J.F., Battin, J. and Sisk, T.D. 2004. Ecological responses to habitat edges: Mechanisms, models, and variability explained. Annu. Rev. Ecol. Evol. Syst. 35: 491–522.
Stohlgren, T.J., Owen, A.J. and Lee, M. 2000. Monitoring shifts in plant diversity in response to climate change: a method for landscapes. Biodivers. Conserv. 9: 65–86.
Tiner, R.W. 1991. The concept of a hydrophyte for wetland identif-cation. BioScience 41: 236–247.
van der Maarel, E. 1976. On the establishment of plant community boundaries. Berichte Dtsch. Bot. Ges. 89: 415–443.
Walker, S., Wilson, J.B., Steel, J.B., Rapson, G.L., Smith, B., King, W.M. and Cottam, Y.H. 2003. Properties of ecotones: Evidence from five ecotones objectively determined from a coastal vegetation gradient. J. Veg. Sci. 14: 579–590.
Williams, P.H., de Klerk, H.M. and Crowe, T.M. 1999. Interpreting biogeographical boundaries among Afrotropical birds: spatial patterns in richness gradients and species replacement. J. Biogeogr. 26: 459–474.
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Brownstein, G., Johns, C., Fletcher, A. et al. Ecotones as indicators: boundary properties in wetland-woodland transition zones. COMMUNITY ECOLOGY 16, 235–243 (2015). https://doi.org/10.1556/168.2015.16.2.11
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DOI: https://doi.org/10.1556/168.2015.16.2.11