Effect of reduction in sampling effort for monitoring epiphytic lichen diversity in forests
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In Europe, epiphytic lichens are incorporated in forest diversity monitoring projects in which sampling at the tree level is carried out on 4 grids on the 4 cardinal points (N, S, E, W) of the trunk. Our results, based on the analysis of a dataset referring to six forest sites in NE-Italy and including 264 trees, indicate that a lichen assessment based on sampling at the tree level less than four cardinal points might be effective in estimating species richness across different forest types, showing very high rates of species capture. Similar results were achieved if the reduction of sampling effort is applied to the number of trees sampled within each area. This effect can be explained taking into account the redundant information collected on the same tree. In the framework of forest monitoring programs, the main perspective of our results is related to the possibility of investing saved resources for improving lichen inventories by including in the surveys currently neglected microhabitats. Further studies would be welcome to identify an optimal balance between sampling effort and information gathered, as economic resources are often a constraint to activate and maintain large-scale and long-term monitoring projects.
KeywordsForest monitoring Lichen diversity Rarefaction curves Sampling efficiency Species richness
“Paneveggio” sampling area
“Renon” sampling area
“Danta di Cadore” sampling area
“Cansiglio” sampling area
“Monticolo” sampling area
“Celarda” sampling area
- Asta, J., W. Erhardt, M. Ferretti, F. Fornasier, U. Kirschbaum, P.L. Nimis,W. Purvis, S. Pirintsos, C. Scheidegger, C. Van Haluwyn and V. Wirth. 2002. Mapping lichen diversity as an indicator of environmental quality. In: P.L. Nimis, C. Scheidegger and P.A. Wolseley (eds.), Monitoring with Lichens - Monitoring Lichens. Kluwer, Dordrecht, pp. 273–279.Google Scholar
- Bergamini, A., C. Scheidegger, S. Stofer, P. Carvalho, S. Davey, M. Dietrich, F. Dubs, E. Farkas, U. Groner, K. Kärkkäinen, C. Keller, L. Lökös, S. Lommi, C. Máguas, R. Mitchell, P. Pinho, V.J. Rico, G. Aragón, A.M. Truscott, P. Wolseley, and A. Watt. 2005. Performance of macrolichens and lichen genera as indicators of lichen species richness and composition. Conserv. Biol. 19: 1051–1062.Google Scholar
- Berryman, S. and B. McCune. 2006. Epiphytic lichens along gradients in topography and stand structure in western Oregon, USA. Pac. Northwest Fun. 1: 1–38.Google Scholar
- Bunge, J. and M. Fitzpatrick. 1993. Estimating the number of species: a review. J. Am. Stat. Assoc. 88: 364–373.Google Scholar
- Giordani, P., G. Brunialti, J. Nascimbene, E. Gottardini, F. Cristofolini, D. Isocrono, E. Matteucci and L. Paoli. 2006. Aspects of biological diversity in the CONECOFOR plots. III. Epiphytic lichens. Ann. Ist. Sper. Selv. 30 suppl. 2: 43–50.Google Scholar
- Nascimbene, J. 2006. Indagine lichenologica nelle aree di monitor-aggio integrato IT01-Renon e IT02-Monticolo (Alto Adige). Forest observer 2/3: 157–168.Google Scholar
- Palmer, M.W. 1995. How should one count species. Nat. Areas J. 15: 124–135.Google Scholar
- Stofer, S., V. Catalayud, M. Ferretti, R. Fischer, P. Giordani, C. Keller, N. Stapper and C. Scheidegger. 2003. Epiphytic lichen monitoring within the EU/ICP Forests Biodiversity Test-Phase on Level II plots. Available from: www.forestbiota.org.
- Stohlgren, T.J. 2007. Measuring Plant Diversity: Lessons from the Field. Oxford Univ. Press, New York.Google Scholar
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