Understory effect on tree and cork growth in cork oak woodlands

Sonia P. Faias, Joana A. Paulo, João H. N. Palma, Margarida Tomé

Abstract


Aim of study: Cork oak is one of the main forest tree species in Portugal that typically occurs in montado, where operational practices oriented to the tree, crop or animal management may influence several of the ecosystem components. This study aimed at contributing to fulfil the a lack of knowledge on the effect of these practices on the cork and wood growth, by comparing the wood diameter growth and the annual cork increment under two different understory management options.

Material and methods: An experimental trial implemented on an uneven-aged cork oak pure stand during a cork rotation period of 9 years, was established with the specific goal of comparing understory management options: a yellow lupine pasture versus spontaneous vegetation. Cork samples were taken at the beginning and end of the period and were used to measure cork thickness and annual cork rings. The differences between treatments were assessed performing a non-parametric test and a more robust approach using linear mixed model. Precipitation and treatment levels were jointly considered on the analysis.

Main results: A slight effect was found on the cork thickness regarding the treatment with lupine application. However, no distinct effect was found, regarding wood and the annual cork increment pattern. Additionally, annual cork ring width showed a positive correlation with precipitation and a negative correlation with ring age.

Research highlights: The results of this study indicate no distinct pattern regarding the annual cork and wood increment when comparing the understory effect of yellow lupine pasture versus spontaneous vegetation.

Keywords


Quercus suber, cork thickness; cork ring; lupine; shrubs; linear mixed model

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References


AFN, 2010. Inventário Florestal Nacional Portugal Continental IFN5, 2005-2006. Autoridade Florestal Nacional, Lisboa, 209 pp. [in Portuguese].

Almeida AM, Tome J, Tome M, 2010. Development of a system to predict the evolution of individual tree mature cork caliber over time. Forest Ecol Manage 260 (8): 1303-1314. https://doi.org/10.1016/j.foreco.2010.07.017

APCOR, 2016. O anuário de cortiça 2016. Associação Portuguesa da Cortiça, Santa Maria de Lamas, Portugal, 59 pp.

Arosa ML, Bastos R, Cabral JA, Freitas H, Costa SR, Santos M, 2017. Long-term sustainability of cork oak agro-forests in the Iberian Peninsula: A model-based approach aimed at supporting the best management options for the montado conservation. Ecol Model 343: 68-79. https://doi.org/10.1016/j.ecolmodel.2016.10.008

Aronson J, Pereira JS, Pausas JG, 2009. Cork oak woodlands on the edge. Ecology, adaptive management, and restoration, 1st edn. Soc Ecol Rest Int, Island Press, Washington D.C, pp: 129-137.

Caldeira MC, Lecomte X, David TS, Pinto JG, Bugalho MN, Werner C, 2015. Synergy of extreme drought and shrub invasion reduce ecosystem functioning and resilience in water-limited climates. Scientific Reports 5:15110. https://doi.org/10.1038/srep15110

Callaway R, 1995. Positive interactions among plants. The Botanical Review 61: 306-349. https://doi.org/10.1007/BF02912621

Caritat A, Molinas M, Vilar L, Masson P, 1999. Efecto de los tratamientos silvopastorales en el crecimiento del alcornoque. Scientia gerundesis 24: 27-35.

Caritat A, Gutierrez E, Molinas M, 2000. Influence of weather on cork-ring width. Tree Physiol 20: 893-900. https://doi.org/10.1093/treephys/20.13.893

Correia AC, Costa e Silva F, Correia AV, Hussain MZ, Rodrigues AD, David JS, Pereira JS, 2014. Carbon sink strength of a Mediterranean cork oak understorey: how do semi-deciduous and evergreen shrubs face summer drought? J Veg Sci 25 (2): 411-426. https://doi.org/10.1111/jvs.12102

Costa A, Pereira H, Oliveira A, 2002. Influence of climate on the seasonality of radial growth of cork oak during a cork production cycle. Ann For Sci 59: 429−437. https://doi.org/10.1051/forest:2002017

David TS, Pinto CA, Nadezhdina N, Kurz-Besson C, Henriques MO, Quilhó T, Cermak J, Chaves MM, Pereira JS, David JS, 2013. Root functioning, tree water use and hydraulic redistribution in Quercus suber trees: A modeling approach based on root sap flow. Forest Ecol Manage 307: 136-146. https://doi.org/10.1016/j.foreco.2013.07.012

Dinis C, Surový P, Ribeiro N, Oliveira MC, 2015. Effect of soil compaction at different depths on cork oak seedling growth. New Forests 46: 235-246. https://doi.org/10.1007/s11056-014-9458-0

Ferreira T, Rasband WS, 2010. ImageJ User Guide, IJ 1.46. http://imagej.nih.gov/ij/docs/guide/

Gómez-Rey MX, Madeira M, Gonzalez-Prieto SJ, Coutinho J, 2013. Soil C and N dynamics in a Mediterranean oak woodland with shrub encroachment. Plant Soil 371: 339-354. https://doi.org/10.1007/s11104-013-1695-z

IUSS Working Group WRB, 2006. World reference base for soil resources 2006, 2nd ed. World Soil Resources Reports No. 103, FAO, Rome, 133 pp.

Martín D, Vázquez-Piqué J, Alejano R. 2015. Effect of pruning and soil treatments on stem growth of holm oak in open woodland forests. Agrofor Syst 89: 599–609 . https://doi.org/10.1007/s10457-015-9794-x

McDonald JH, 2014. Handbook of Biological Statistics, 3rd ed. Sparky House Publishing, Baltimore, MD, USA.

Moreno G, Obrador JJ, 2007. Effects of trees and understory management on soil fertility and nutrient status of holm oaks in Spanish dehesas. Nutr Cycl Agroecosyst 78: 253-264. https://doi.org/10.1007/s10705-007-9089-3

Oliveira G, Costa A, 2012. How resilient is Quercus suber L. to cork harvesting? A review and identification of knowledge gaps. Forest Ecol Manage 270: 257-272. https://doi.org/10.1016/j.foreco.2012.01.025

Oliveira V, Lauw A, Pereira H, 2016. Sensitivity of cork growth to drought events: insights from a 24-year chronology. Climatic Change 137: 261-274. https://doi.org/10.1007/s10584-016-1680-7

Paulo JA, Crous-Duran J, Firmino PN, Faias SP; Palma JHN, 2016a. D2.4 Report describing the components, structure, ecosystem services, and economic value of selected HNCV agroforestry systems. Deliverable report 2.4 for EU FP7 Research Project AGFORWARD (613520). 29 pp. http://www.agforward.eu/index.php/pt/montado-portugal-843.html

Paulo JA, Pereira H, Tomé M, 2016b. Analysis of variables influencing tree cork caliper in two consecutive cork extractions using cork growth index modelling. Agrofor Syst 91: 221 -237. https://doi.org/10.1007/s10457-016-9922-2

Paulo JA, Tomé M, 2017. Does debarking intensity during the first cork extraction affect future cork thickness? Ann For Sci 74: 66. https://doi.org/10.1007/s13595-017-0662-x

Pereira H, 2007. Cork: Biology, Production and Uses. Elsevier Publ, Amsterdam, 336 pp.

Pinheiro JC, Bates DM, 2000. Mixed-effects models in S and S-Plus. Statistics and computing series, Springer, NY, 528 pp.

Pinto-Correia T, Ribeiro N, Sá-Sousa P, 2011. Introducing the montado, the cork and holm oak agroforestry system of Southern Portugal. Agrofor Syst 82: 99-104. https://doi.org/10.1007/s10457-011-9388-1

Pulido FJ, Díaz M, 2005. Regeneration of a Mediterranean oak: A whole-cycle approach. Ecoscience 12: 92-102. https://doi.org/10.2980/i1195-6860-12-1-92.1

Sánchez-González M, Río M, Cañellas I, Montero G, 2006. Distance independent tree diameter growth model for cork oak stands. Forest Ecol Manage 225 (1-3): 262-270. https://doi.org/10.1016/j.foreco.2006.01.002

Sánchez-González M, Calama R, Cañellas I, Montero G, 2007. Variables influencing cork thickness in Spanish cork oak forests: A modelling approach. Ann Forest Sci 64 (3): 301-312. https://doi.org/10.1051/forest:2007007

Santana J, Porto M, Reino L, Beja P, 2011. Long-term understory recovery after mechanical fuel reduction in Mediterranean cork oak forests. Forest Ecol Manage 261 (3): 447-459. https://doi.org/10.1016/j.foreco.2010.10.030

SAS INSTITUTE INC, 2011. SAS/STAT 9.4 User's Guide, SAS Institute Inc. Cary, NC, USA.

Schneider CA, Rasband WS, Eliceiri KW, 2012. NIH Image to ImageJ: 25 years of image analysis. Nature Methods 9: 671-675. https://doi.org/10.1038/nmeth.2089

Teixeira RFM, Domingos T, Costa APSV, Oliveira R, Farropas L, Calouro F, Barradas AM, Carneiro JPBG, 2011. Soil organic matter dynamics in Portuguese natural and sown rainfed grasslands. Ecol Model 222: 993-1001. https://doi.org/10.1016/j.ecolmodel.2010.11.013




DOI: 10.5424/fs/2018271-11967

Webpage: www.inia.es/Forestsystems