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Title: Survival and early growth of mixed forest stands installed in a Mediterranean Region: Effects of site preparation intensity
Authors: Fonseca, Felícia
Figueiredo, Tomás de
Martins, Afonso
Keywords: Mediterranean Region
Pseudotsuga menziesii
Castanea sativa
Issue Date: 2011
Publisher: Elsevier
Citation: Fonseca, F., Figueiredo, T., Martins, A. (2011) - Survival and early growth of mixed forest stands installed in a Mediterranean Region: effects of site preparation intensity. Forest Ecology and Management. ISSN 0378-1127. (IN PRESS)
Abstract: In Mediterranean environments, availability of water and nutrients are the mains factors limiting the success of afforestation. As part of a wider project, an experiment was established in Northeast Portugal, aiming at testing the effect of several site preparation techniques on plant survival and growth (height and diameter) in a newly installed mixed forest stand. Results presented regard plant response during 42 months after plantation. The experimental protocol consisted in seven treatments described by mechanical operations that rank soil disturbance intensity from none to high, set in plots of 375 m2, randomly distributed in three blocks, in different topographic positions (gentle slope plateau, moderate slope shoulder, and steep mid-slope). Pseudotsuga menziesii (PM) and Castanea sativa (CS) forest species were planted in a 4m x 2 m scheme and in alternate rows with 12 plants on each row per plot, summing up 72 plant per specie and treatment at start of the experiment. The results show that: (i) the highest mortality was observed immediately after the plantation and before the dry season, on the lowest intensity treatments; (ii) after the dry season, the highest mortality was also observed in treatments with the lowest intensity of soil disturbance, while the lowest values were found on the intermediate intensity treatments; (iii) during the experiemental period, the effect of treatments on plant growth (height and diameter) was statistically significant; however, experimental results do not lead yet to a clear quantitative relationship between soil disturbance intensity due to site preparation and plant response under the conditions tested.
Description: IN PRESS
Peer review: yes
ISSN: 0378-1127
Publisher Version:
Appears in Collections:ARN - Artigos em Revistas Indexados ao ISI/Scopus

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