Annals of Forest Science

, Volume 71, Issue 3, pp 349–362 | Cite as

Survival and growth of Nothofagus pumilio seedlings under several microenvironments after variable retention harvesting in southern Patagonian forests

  • Guillermo J. Martínez PasturEmail author
  • Rosina Soler Esteban
  • Juan M. Cellini
  • María V. Lencinas
  • Pablo L. Peri
  • Mark G. Neyland
Original Paper



Variable retention prescriptions for Nothofagus pumilio forests provide for biodiversity conservation and natural regeneration by controlled opening of the canopy. Harvesting generates different microenvironments which present dissimilar conditions for seedling establishment, due to positive or negative influences over biotic and abiotic factors.


This study evaluated seedling survival and performance in different microenvironments within the harvested stands. Tested hypotheses stated that seedling stress and performance were influenced by harvesting due to changes in forest structure, microclimate, soil properties, and nutrient availability.


In the stands harvested by variable retention, five contrasting microenvironments were selected as treatments for the experiments and sampling. Environmental variables were related to ecophysiological, seedling survival, and performance.


The modification of forest structure (crown cover and tree density) and the presence of coarse woody debris greatly affect the effective rainfall and global radiation reaching understorey level, influencing seedling stress and consequently survival and performance. Harvesting also modifies soil properties (e.g., soil bulk density) and coarse woody debris accumulation which in turn influences soil moisture and/or solar radiation levels. Analyses showed that seedlings received benefits of microenvironment variation after harvesting. Areas covered with middle or fine woody debris presented regeneration with better ecophysiological response and seedling performance, although dispersed retention areas (far away from remnant trees) and roads could also present suitable conditions for seedling survival and performance.


The proportion of different microenvironments in the harvested forests will determine the amount of natural recruitment of regeneration and consequently the success of proposed silvicultural management. Forest practices must be manipulated to increase the proportion of favorable microenvironments (e.g., woody debris), allowing greater natural regeneration success during the first years after harvesting.


Aggregated retention Dispersed retention Microenvironments Light availability Soil moisture Soil properties 



The authors gratefully thank the Centro Austral de Investigaciones Científicas, Ricardo Vukasovic of Servicios Forestales Consultancy, Los Cerros Ranch, and Kareken sawmill for their support during the completion of this work.


We acknowledge funding (2009–2011) by the MIA-CATIE project (Fondo de apoyo a proyectos de investigación en mitigación y adaptación al cambio climático en la gestión forestal sostenible).


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Copyright information

© INRA and Springer-Verlag France 2013

Authors and Affiliations

  • Guillermo J. Martínez Pastur
    • 1
    Email author
  • Rosina Soler Esteban
    • 1
  • Juan M. Cellini
    • 2
  • María V. Lencinas
    • 1
  • Pablo L. Peri
    • 3
  • Mark G. Neyland
    • 4
  1. 1.Centro Austral de Investigaciones Científicas (CONICET)UshuaiaArgentina
  2. 2.Laboratorio de Investigaciones de Sistemas Ecológicos y Ambientales (LISEA-UNLP)La PlataArgentina
  3. 3.Instituto Nacional de Tecnología AgropecuariaUniversidad Nacional de la Patagonia Austral - CONICETRío GallegosArgentina
  4. 4.Forestry TasmaniaHobartAustralia

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