Dendroclimatological reconstructions in South America: A review

Boninsegna, José A.; Argollo, Jaime; Aravena, Juan Carlos; Barichivich, Jonathan; Christie, Duncan A.; Ferrero, María Eugenia; Lara, Antonio; Quesne, Carlos Le; Luckman, Brian H.; Masiokas, Mariano; Morales, Mariano; Oliveira, J. M.; Roig, Fidel A.; Srur, Ana Marina; Villalba, Ricardo

doi:10.1016/j.palaeo.2009.07.020

Cited by 140 publications

(77 citation statements)

References 53 publications

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“…Such quantitative analyses, however, are scarce due to the paucity of both instrumental climatic data and field-based ecological monitoring. Combination of multiscale tools, such as dendrochronology and greenness indices derived from satellite imagery, can help address these research gaps (Boninsegna et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Lake Fluctuations, Plant Productivity, and Long-Term Variability in High-Elevation Tropical Andean Ecosystems

Carilla

Grau

Paolini

et al. 2013

Arctic, Antarctic, and Alpine Research

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Section: Introductionmentioning

confidence: 99%

Lake Fluctuations, Plant Productivity, and Long-Term Variability in High-Elevation Tropical Andean Ecosystems

Carilla

Grau

Paolini

et al. 2013

Arctic, Antarctic, and Alpine Research

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“…Most of the available proxies in southern South America are based on dendrochronological records from the north and south Patagonian Andes, where the climate-dependent rate of growth is measured from annual tree-ring properties (e.g. ring width and density; see Boninsegna et al, 2009 for an overview). Exploiting as many independent sources as possible increases the reliability of the resulting climate reconstructions.…”

Section: Introductionmentioning

confidence: 99%

Modelling and climatic interpretation of the length fluctuations of Glaciar Frías (north Patagonian Andes, Argentina) 1639–2009 AD

et al. 2012

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We explore the climatic information contained in the record of length fluctuations of Glaciar Frías, in the north Patagonian Andes of Argentina. This record is one of the longest and most detailed glacier records in southern South America, starting in 1639. In order to interpret the length variations of Glaciar Frías since the maximum Little Ice Age extent, we use a combination of a simplified surface energy-balance model to calculate the glacier mass balance, and a flowline model to account for the dynamical response of the glacier to changes in the climatic forcing. The overall retreat of the glacier observed over 1639–2009 is best explained by an annual mean temperature increase of 1.2 °C or a decrease in annual precipitation of 34%, most of which would have occurred during the 20th century. The glacier model is also forced with two independent tree-ring and multi-proxy reconstructions of precipitation and temperature. The uncertainties in these reconstructions are rather large, leading to a wide range in the modelled glacier length that includes most of the observations. However, in both reconstructions, the mid-17th century seems to be too cold and the early 19th century too warm to explain the observed glacier lengths with the glacier model forced with the reconstructions. Forcing with reconstructed precipitation and temperature separately shows that the influence of historical variations in precipitation on the glacier fluctuations of Glaciar Frías is smaller than that of the temperature fluctuations. This suggests that the observed 1639–2009 retreat could be best explained by a warming close to 1.2 °C

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“…In Bolivia, early studies of growth rings started in the Andean region, particularly in species with distinguishable rings (Boninsegna et al, 2009). In lowland eastern Bolivia, studies on tree rings are scarce.…”

Section: Introductionmentioning

confidence: 99%

Determining the annual periodicity of growth rings in seven tree species of a tropical moist forest in Santa Cruz, Bolivia

2012

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To determine the annual periodicity of growth rings in seven tree species from a tropical moist forest in Santa Cruz, Bolivia, a fire scar was used as a marker point to verify the annual nature of tree rings. The number of tree rings formed between the 1995 fire scar and the collection of the cross sections in 2002 was visually identified. The seven species showed annual growth rings. In most cases, boundaries between rings were marked by the presence of marginal parenchyma and wall-thicked fibers formed at the end of the growing season. Growth lenses and false rings were recorded in some species. Tree rings can be carefully used in Santa Cruz forests to determine rates of growth. This information is crucial for defining forest management practices in tropical regions.Key words: tropical forest; dendrochronology; tree rings; forest management; fire scars. ResumenDeterminación de la periodicidad anual de anillos de crecimiento en siete especies arbóreas en un bosque tropical húmedo, en Santa Cruz, BoliviaSe establece el carácter anual de las bandas de crecimiento presentes en el leño de siete especies forestales de un bosque tropical húmedo. Se usó como indicador para la verificación del carácter anual de los anillos la cicatriz dejada por un incendio ocurrido en el año 1995. Los anillos presentes en el leño de estas especies desde la ocurrencia del incendio en 1995 hasta el año de muestreo en 2002 fueron determinados visualmente. Las siete especies estudiadas poseen bandas anuales de crecimiento cuyos límites están generalmente demarcados por la presencia de parénquima marginal y el engrosamiento de fibras al final del período de crecimiento. En algunas especies se observó la presencia de lentes de crecimiento y falsos anillos. Los anillos de crecimiento en especies tropicales, aunque presenta algunas dificultades para su datación, pueden ser usados para determinar tasas de crecimiento en los bosques de Santa Cruz. Esta información es crucial para definir planes de manejo forestal sostenibles. Palabras

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Dendroclimatological reconstructions in South America: A review

Cited by 140 publications

References 53 publications

Lake Fluctuations, Plant Productivity, and Long-Term Variability in High-Elevation Tropical Andean Ecosystems

Lake Fluctuations, Plant Productivity, and Long-Term Variability in High-Elevation Tropical Andean Ecosystems

Modelling and climatic interpretation of the length fluctuations of Glaciar Frías (north Patagonian Andes, Argentina) 1639–2009 AD

Determining the annual periodicity of growth rings in seven tree species of a tropical moist forest in Santa Cruz, Bolivia

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