Descripción del proyecto
Anillos anuales para conocer las dinámicas y los factores determinantes del crecimiento arbustivo
Los ecosistemas árticos y alpinos son enormemente sensibles al cambio climático. Los arbustos de estos dos ecosistemas responden de distintas maneras al cambio climático y se ven influidos por varios factores. No obstante, no existe información sobre las variaciones en el crecimiento y en los caracteres anatómicos de la madera. El proyecto financiado con fondos europeos BoRiS extraerá información almacenada en los anillos anuales para comprender la secuencia de respuestas de ejemplares y comunidades y así obtener información sobre las futuras dinámicas de expansión de los arbustos árticos y alpinos. El proyecto ofrecerá una cuantificación retrospectiva del crecimiento y los caracteres anatómicos de la madera, calcularán su respuesta ante cambios medioambientales, estudiarán su potencial como variables indirectas climáticas, desvelarán los factores bióticos y abióticos en acción y determinarán los patrones de las dinámicas arbustivas locales y regionales futuras.
Objetivo
Climate change is observed and predicted to profoundly affect Arctic and Alpine ecosystems. These ecosystems, at the
border of woody plant growth, change at a faster rate than the global average. Growth responses of Arctic-Alpine shrubs to
climate change are variable and influenced by different factors. A key to understand the plasticity of responses to climate
change is a detailed analysis of growth at the intra-individual to the community level. Currently, we lack knowledge on the
intra-individual, intraspecific, and interspecific variation in growth and wood anatomical traits across environmental gradients.
BoRiS aims at uncovering the information archived in annual rings to gain fundamental new insight on how the responses
scale from individuals to communities. Insight into past dynamics opens a valuable window to the future and provides the
basis for predicting future range dynamics of Arctic-Alpine shrubs. BoRiS provides a retrospective quantification of growth
and wood anatomical traits from Arctic-Alpine shrub species, assesses their variation across environmental conditions, tests
their significance as climatological proxies, disentangles the abiotic and biotic factors influencing growth, and models future
shrub dynamics at the landscape to regional scale. BoRiS is possible due to a unique data set of > 1000 individual shrubs
sampled in Arctic and Alpine areas and an innovative integration of state-of-the art quantitative wood anatomical analyses,
classical dendrochronology, a newly proposed community-based dendroecology framework, range dynamic modelling and
remote sensing observations. It is the first project to combine growth and wood anatomical responses of a large number of
Arctic-Alpine shrubs and to upscale the results from individuals to communities. BoRiS is envisioned to be the first step in the
development of an independent research field linking plant growth dynamics in a community perspective with earth
observations across space.
Ámbito científico
Palabras clave
Programa(s)
Régimen de financiación
MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)Coordinador
8000 Aarhus C
Dinamarca