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iForest - Biogeosciences and Forestry

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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


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’ address

(1)
Rafael M Navarro-Cerrillo
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)
(2)
J Julio Camarero
ARAID, Instituto Pirenaico de Ecología (CSIC), Avda. Montañana 1005, E-50080 Zaragoza (Spain)
(3)
José Lopez Quintanilla
Consejería de Medio Ambiente, Junta de Andalucia, Sevilla (Spain)

Corresponding author

 
Rafael M Navarro-Cerrillo
rmnavarro@uco.es

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

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