Evento
Natural regeneration dynamic of mixed Nothofagus forests in southern Patagonia: influence of canopy composition and landscape
Toro Manríquez, Mónica del Rosario
; Soler, Rosina; Lencinas, María Vanessa
; Promis Baeza, Alvaro Andres; Huertas Herrera, Alejandro
; Blazina, Ana Paula
; Miller, Juan Andrés
; Martínez Pastur, Guillermo José
Tipo del evento:
Congreso
Nombre del evento:
IUFRO Mixed species forests: Risks, resilience and management
Fecha del evento:
25/03/2020
Institución Organizadora:
Swedish University of Agricultural sciences. Southern Swedish Forest Research Centre;
International Union of Forest Research Organizations;
Título del Libro:
Book of Abstracts of the IUFRO Mixed species forests: Risks, resilience and management
Editorial:
Swedish University of Agricultural sciences, Southern Swedish Forest Research Centre, Alnarp. Lund, Sweden
ISBN:
978-91-576-9727-1
Idioma:
Inglés
Clasificación temática:
Resumen
Species composition of tree recruitment in mixed forests is a determining factor related to thecanopy structure. This work determines if the mixed forests of Nothofagus pumilio and N.betuloides present transitions towards forest types with the dominance of one of these speciesor are a stable system, by the analyses of its natural regeneration dynamics. Three foresttypes were selected (pure N. pumilio, pure N. betuloides and mixed stands) in two contrastinglandscapes (coast and mountain) in Tierra del Fuego, Argentina. Forest structure andmicroclimate (air temperature, soil moisture) were evaluated for each stand (n=12), while seedproduction and natural tree regeneration were monitored annually (2014-2019). Data wereanalysed with ANOVAs, general linear models and multivariate techniques. Seedlingrecruitment of N. pumilio and N. betuloides was proportional to seed production with significantinter-annual variability. Nothofagus pumilio was more successful than N. betuloides inseedlings recruitment in every forest type and landscape. Forest structure and microclimatealso played important roles in the dynamics of mixed Nothofagus forests. Multivariate analysesrevealed a stronger effect of the landscape rather than canopy composition. Our results showa tendency in mixed Nothofagus forests towards a transition to pure N. pumilio forests, mainlydue to greater success in its regeneration strategy
Palabras clave:
MIXED FOREST
,
DYNAMIC
,
TIERRA DEL FUEGO
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Eventos(CADIC)
Eventos de CENTRO AUSTRAL DE INVESTIGACIONES CIENTIFICAS
Eventos de CENTRO AUSTRAL DE INVESTIGACIONES CIENTIFICAS
Citación
Natural regeneration dynamic of mixed Nothofagus forests in southern Patagonia: influence of canopy composition and landscape; IUFRO Mixed species forests: Risks, resilience and management; Lund; Suecia; 2020; 162-162
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