Plant Ecology

, Volume 214, Issue 11, pp 1345–1359 | Cite as

The role of edge contrast and forest structure in edge influence: vegetation and microclimate at edges in the Brazilian cerrado

  • Pavel Dodonov
  • Karen A. Harper
  • Dalva M. Silva-Matos
Article

Abstract

The effect of the adjacent non-forested environment on the forest near the edge, edge influence (EI), is an important impact in fragmented landscapes and is believed to vary with factors such as forest structure and edge contrast. In order to improve our understanding of the factors governing the variability in EI, we studied microclimate and vegetation at cerrado edges surrounded by variable land uses in southeastern Brazil, a system with both forest and savanna fragments. We determined the significance, magnitude and distance of EI on microclimate, vegetation structure and grass biomass which we measured along five transects perpendicular to fourteen edges in forest or savanna next to different land uses. We introduce a quantitative measure of edge contrast that considers land uses at different distances from the same edge (e.g., a firebreak between a forest edge and a plantation) and verified whether edge contrast is correlated with EI in this system. Notwithstanding the large variation in EI among variables and study sites, there were some similarities in the patterns of EI between forest and savanna edges. Edge contrast was successfully quantified by our measure but was only correlated with EI on moisture and grass biomass. Our results point to the high variability in EI within a region. Our quantitative measure of edge contrast may be useful in explaining variability in EI. However, much unexplained variation remains in the highly fragmented cerrado system which is affected by EI in both forest and savanna fragments.

Keywords

Edge effects Exotic grasses Moisture Savanna Temperature Vegetation height 

Notes

Acknowledgments

We thank R. Xavier, E. Recco, C. Zanelli, A. Viscardi, F. Oliveira and others for extensive help with the fieldwork; A. Viscardi for aid in analyzing canopy closure; M. Batalha, A. Peret, M. Bichuette, A. Melo, V. Pivello, A. Braga, I. Paneczko, F. Tiberio, as well as the editor and two anonymous reviewers for valuable comments on previous versions of this manuscript; C. Zanelli for the drawing in Fig. 2; the Forestry Institute of São Paulo State, the Municipal Botanical Garden of Bauru and to the owner of Farm América for permissions and logistic support; and FAPESP—São Paulo State Research Foundation for financial support provided to PD (MSc Grant 2008/07772-0).

Supplementary material

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Supplementary material 1 (TXT 5 kb)
11258_2013_256_MOESM2_ESM.txt (2 kb)
Supplementary material 2 (TXT 3 kb)
11258_2013_256_MOESM3_ESM.xls (424 kb)
Supplementary material 3 (XLS 424 kb)

References

  1. Alignier A, Decochat M (2011) Variability of forest edge effect on vegetation implies reconsideration of its assumed hypothetical pattern. Appl Veg Sci 14:67–74CrossRefGoogle Scholar
  2. Avon C, Bergès L, Dumas Y, Dupouey JL (2010) Does the effect of forest roads extend a few meters or more into the adjacent forest? A study on understory plant diversity in managed oak stands. For Ecol Manag 259:1546–1555CrossRefGoogle Scholar
  3. Bowering M, LeMay V, Marshall P (2006) Effects of forest roads on the growth of adjacent lodgepole pine trees. Can J For Res 36:919–929CrossRefGoogle Scholar
  4. Cadenasso ML, Pickett STA (2000) Linking forest edge structure to edge function: mediation of herbivore damage. J Ecol 88:31–44CrossRefGoogle Scholar
  5. Cadenasso ML, Pickett STA, Weathers KC, Jones CG (2003) A framework for a theory of ecological boundaries. Bioscience 53:750–758CrossRefGoogle Scholar
  6. Chabrerie O, Jamoneau A, Gallet-Moron E, Decocq G (2013) Maturation of forest edges is constrained by neighbouring agricultural land management. J Veg Sci 24:58–69CrossRefGoogle Scholar
  7. CIIAGRO (2010) Centro Integrado de Informações Agrometeorológicas. http://www.ciiagro.sp.gov.br/. Accessed 15 Jan 2011
  8. Cilliers SS, Williams NSG, Barnard FJ (2008) Patterns of exotic plant invasions in fragmented urban and rural grasslands across continents. Landsc Ecol 23:1243–1256CrossRefGoogle Scholar
  9. Coutinho LM (1978) O conceito de cerrado. Rev Bras Bot 1:17–23Google Scholar
  10. Davies-Colley RJ, Payne GW, van Elswijk M (2000) Microclimate gradients across a forest edge. N Z J Ecol 24:111–121Google Scholar
  11. Delgado JN, Arroyo NL, Arevalo JR, Fernandez-Palacios JM (2007) Edge effects of roads on temperature, light, canopy closure, and canopy height in laurel and pine forests (Tenerife, Canary Islands). Landsc Urban Plan 81:328–340CrossRefGoogle Scholar
  12. Didham RK, Lawton JH (1999) Edge structure determines the magnitude of changes in microclimate and vegetation structure in tropical forest fragments. Biotropica 31:17–30Google Scholar
  13. Durigan G, Siqueira MF, Franco GADC (2007) Threats to the cerrado remants of the state of São Paulo, Brazil. Sci Agric 64:355–363CrossRefGoogle Scholar
  14. Fahrig L (2003) Effects of habitat fragmentation on biodiversity. Annu Rev Ecol Evol Syst 34:487–515CrossRefGoogle Scholar
  15. Frazer GW, Canham CD, Lertzman KP (1999) Gap Light Analyzer (GLA): imaging software to extract canopy structure and light transmission indices from true-colour fisheye photographs, users manual and program documentation. Simon Fraser University, BurnabyGoogle Scholar
  16. Gehlhausen SM, Schwartz MW, Augspurger CK (2000) Vegetation and microclimatic edge effects in two mixed-mesophytic forest fragments. Plant Ecol 147:21–35CrossRefGoogle Scholar
  17. Gonçalves CS, Batalha MA (2011) Towards testing the “honeycomb rippling model” in cerrado. Braz J Biol 71:1–8CrossRefGoogle Scholar
  18. Gottsberger G, Silberbauer-Gottsberger I (2006) Life in the cerrado: a South American tropical seasonal ecosystem. Reta Verlag, UlmGoogle Scholar
  19. Hammer Ø, Harper DAT, Ryan PD (2001) PAST: Paleontological statistics software package for education and data analysis. Palaeontol Electron 4:9pp. Available at http://palaeo-electronica.org/2001_1/past/issue1_01.htm. Accessed 11 Sept 2013
  20. Harper KA, Macdonald SE (2011) Quantifying distance of edge influence: a comparison of methods and a new randomization method. Ecosphere 2:art94CrossRefGoogle Scholar
  21. Harper KA, Macdonald SE, Burton PK, Chen JQ, Brosofske KD, Saunders SC, Euskirchen ES, Roberts D, Jaiteh MS, Esseen PA (2005) Edge influence on forest structure and composition in fragmented landscapes. Conserv Biol 19:768–782CrossRefGoogle Scholar
  22. Hoffmann WA, Haridasan M (2008) The invasive grass, Melinis minutiflora, inhibits tree regeneration in a Neotropical savanna. Austral Ecol 33:29–36CrossRefGoogle Scholar
  23. Hoffmann WA, Jaconis SY, McKinley KL, Geiger EL, Gotsch SG, Franco AC (2012) Fuels or microclimate? understanding the drivers of fire feedbacks at savanna-forest boundaries. Austral Ecol 37:634–643CrossRefGoogle Scholar
  24. Honnay O, Verheyen K, Hermy M (2002) Permeability of ancient forest edges for weedy plant species invasion. For Ecol Manag 161:109–122CrossRefGoogle Scholar
  25. James J (1980) Monte Carlo theory and practice. Rep Prog Phys 43:1145–1189CrossRefGoogle Scholar
  26. Klink CA, Machado RB (2005) Conservation of the Brazilian Cerrado. Conserv Biol 19:707–713CrossRefGoogle Scholar
  27. Laurance WF, Curran TJ (2008) Impacts of wind disturbance on fragmented tropical forests: a review and synthesis. Austral Ecol 33:399–408CrossRefGoogle Scholar
  28. Lima-Ribeiro MD (2008) Efeitos de borda sobre a vegetação e estruturação populacional em fragmentos de Cerradão no Sudoeste Goiano, Brasil. Acta Bot Bras 22:535–545CrossRefGoogle Scholar
  29. Meyer CL, Sisk TD (2001) Butterfly response to microclimatic conditions following Ponderosa pine restoration. Restor Ecol 9:453–461Google Scholar
  30. Morgan JW (1998) Patterns of invasion of an urban remnant of a species-rich grassland in southeastern Australia by non-native plant species. J Veg Sci 9:181–190CrossRefGoogle Scholar
  31. Noreika N, Kotze DJ (2012) Forest edge contrasts have a predictable effect on the spatial distribution of carabid beetles in urban forests. J Insect Conserv 16:867–881CrossRefGoogle Scholar
  32. Olofsson E, Blennow K (2005) Decision support for identifying spruce forest stand edges with high probability of wind damage. For Ecol Manag 207:87–98CrossRefGoogle Scholar
  33. Pivello VR, Carvalho VMC, Lopes PF, Peccinini AA, Rosso S (1999) Abundance and distribution of native and alien grasses in a “cerrado” (Brazilian savanna) biological reserve. Biotropica 31:71–82Google Scholar
  34. R Development Core Team (2012) R: a language and environment for statistical computing. R Foundation for Statistical Computing, ViennaGoogle Scholar
  35. Reino L, Beja P, Osborne PE, Morgado R, Fabião A, Rotenberry JT (2009) Distance to edges, edge contrast and landscape fragmentation: interactions affecting farmland birds around forest plantations. Biol Conserv 142:824–838CrossRefGoogle Scholar
  36. Ribeiro JF, Walter BMT (2008) As principais fisionomias do bioma Cerrado. In: Sano SM, Almeida SP, Ribeiro JF (eds) Cerrado: ecologia e flora. Embrapa Informação Tecnológicas, Brasília, pp 151–199Google Scholar
  37. Ries L, Fletcher RJ, Battin J, Sisk TD (2004) Ecological responses to habitat edges: mechanisms, models, and variability explained. Annu Rev Ecol Evol Syst 35:491–522CrossRefGoogle Scholar
  38. Riitters KH, Wickham JD, Wade TG, Vogt P (2012) Global survey of anthropogenic neighborhood threats to conservation of grass-shrub and forest vegetation. J Environ Manag 97:116–121CrossRefGoogle Scholar
  39. Smit IPJ, Asner GP (2012) Roads increase woody cover under varying geological, rainfall and fire regimes in African savanna. J Arid Environ 80:74–80CrossRefGoogle Scholar
  40. Strayer DL, Power ME, Fagan WF, Picket STA, Belnap J (2003) A classification of ecological boundaries. Bioscience 53:723–729CrossRefGoogle Scholar
  41. Uitenbroek DG (1997) SISA-Bonferroni. http://www.quantitativeskills.com/sisa/calculations/bonfer.htm. Accessed 10 Jun 2013
  42. Wright TA, Kasel S, Tausz M, Bennett LA (2010) Edge microclimate of temperate woodlands as affected by adjoining land use. Agric For Meteorol 150:1138–1146CrossRefGoogle Scholar
  43. Wright TE, Tausz M, Kasel S, Volkova L, Merchant A, Bennett LT (2012) Edge type affects leaf-level water relations and estimated transpiration of Eucalyptus arenacea. Tree Physiol 32:280–293PubMedCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • Pavel Dodonov
    • 1
  • Karen A. Harper
    • 2
  • Dalva M. Silva-Matos
    • 1
  1. 1.Department of HydrobiologyFederal University of São CarlosSão CarlosBrazil
  2. 2.School for Resource and Environmental Studies, Faculty of ManagementDalhousie UniversityHalifaxCanada

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