Regeneration of Abies pinsapo within gaps created by Heterobasidion annosum-induced tree mortality in southern Spain
Rafael M Navarro-Cerrillo (1) , J Julio Camarero (2), Rubén D Manzanedo (1), Rafael Sánchez-Cuesta (1), José Lopez Quintanilla (3), Raul Sánchez Salguero (1)
iForest - Biogeosciences and Forestry, Volume 7, Issue 4, Pages 209-215 (2014)
doi: https://doi.org/10.3832/ifor0961-007
Published: Feb 27, 2014 - Copyright © 2014 SISEF
Research Articles
Abstract
We explored the effects of tree-fall gaps caused by Heterobasidion annosum-induced tree death on the regeneration of the relict Abies pinsapo in southern Spain. We analyzed the structure and regeneration of A. pinsapo in 44 circular closed-canopy plots and 11 gaps (mean size 75 m2) located in H. annosum infection foci. We measured adult density, basal area, and height of all tree species with a diameter at breast height greater than 7.5 cm and quantified regeneration abundance. Diameter structures were analyzed using Weibull functions. A. pinsapo comprised 49-81% of total adult tree density (358-1418 trees ha-1) and total basal area (15.70-39.22 m2 ha-1). Density of A. pinsapo juveniles ranged from 129 to 416 individuals ha-1, while that of juveniles of other tree species such as Quercus ilex was much lower. A. pinsapo saplings and seedlings were more abundant within gaps than in closed-canopy sites. A. pinsapo regeneration was related to the tree species composition of the stands adjacent to gaps. The main potential species replacing A. pinsapo in H. annosum-induced gaps were, in decreasing order of importance, Quercus ilex, Q. faginea, and Juniperus oxycedrus. The current stand structure and gap-infilling processes suggest that A. pinsapo regenerates adequately within H. annosum-induced gaps. However, the relative proportion of other coexisting tree species within H. annosum-related gaps will increase substantially over time as compared with closed-canopy areas.
Keywords
Abies pinsapo, Mediterranean Forests, Forest Management, Gaps, Regeneration
Authors’ Info
Authors’ address
Rubén D Manzanedo
Rafael Sánchez-Cuesta
Raul Sánchez Salguero
Dept. Ingeniería Forestal, DendrodatLab, Universidad de Córdoba, Campus de Rabanales, Ctra. IV km. 396, E-14071 Cordoba (Spain)
ARAID, Instituto Pirenaico de Ecología (CSIC), Avda. Montañana 1005, E-50080 Zaragoza (Spain)
Consejería de Medio Ambiente, Junta de Andalucia, Sevilla (Spain)
Corresponding author
Paper Info
Citation
Navarro-Cerrillo RM, Camarero JJ, Manzanedo RD, Sánchez-Cuesta R, Lopez Quintanilla J, Sánchez Salguero R (2014). Regeneration of Abies pinsapo within gaps created by Heterobasidion annosum-induced tree mortality in southern Spain. iForest 7: 209-215. - doi: 10.3832/ifor0961-007
Academic Editor
Renzo Motta
Paper history
Received: Jan 31, 2013
Accepted: Nov 18, 2013
First online: Feb 27, 2014
Publication Date: Aug 01, 2014
Publication Time: 3.37 months
Copyright Information
© SISEF - The Italian Society of Silviculture and Forest Ecology 2014
Open Access
This article is distributed under the terms of the Creative Commons Attribution-Non Commercial 4.0 International (https://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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