Growth of northern deciduous trees under increasing atmospheric humidity: possible mechanisms behind the growth retardation

Sellin, Arne; Alber, Meeli; Keinänen, Markku; Kupper, Priit; Lihavainen, Jenna; Lõhmus, Krista; Oksanen, Elina; Sõber, Anu; Söber, J.; Tullus, Arvo

doi:10.1007/s10113-016-1042-z

Cited by 34 publications

(36 citation statements)

References 114 publications

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“…In other words, trees that were of similar or greater above‐ground size than their neighbours did not grow as quickly under elevated air humidity conditions as trees with similar competitive status and size under ambient conditions. Generally, elevated air humidity has proved to be a stress factor for the trees in the FAHM experiment (Sellin et al ., ). On the one hand, advantaged trees are more negatively affected by stressful conditions because they allocate more resources to growth and less to defence (Pretzsch et al ., ).…”

Section: Discussionmentioning

confidence: 99%

The competitive status of trees determines their responsiveness to increasing atmospheric humidity – a climate trend predicted for northern latitudes

Tullus

Kupper

Kaasik

et al. 2016

Global Change Biology

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The interactive effects of climate variables and tree-tree competition are still insufficiently understood drivers of forest response to global climate change. Precipitation and air humidity are predicted to rise concurrently at high latitudes of the Northern Hemisphere. We investigated whether the growth response of deciduous trees to elevated air humidity varies with their competitive status. The study was conducted in seed-originated silver birch and monoclonal hybrid aspen stands grown at the free air humidity manipulation (FAHM) experimental site in Estonia, in which manipulated stands (n = 3 for both species) are exposed to artificially elevated relative air humidity (6-7% over the ambient level). The study period included three growing seasons during which the stands had reached the competitive stage (trees were 7 years old in the final year). A significant 'treatment×competitive status' interactive effect on growth was detected in all years in birch (P < 0.01) and in one year in aspen stands (P = 0.015). Competitively advantaged trees were always more strongly affected by elevated humidity. Initially the growth of advantaged and neutral trees of both species remained significantly suppressed in humidified stands. In the following years, dominance and elevated humidity had a synergistic positive effect on the growth of birches. Aspens with different competitive status recovered more uniformly, attaining similar relative growth rates in manipulated and control stands, but preserved a significantly lower total growth yield due to severe initial growth stress. Disadvantaged trees of both species were never significantly affected by elevated humidity. Our results suggest that air humidity affects trees indirectly depending on their social status. Therefore, the response of northern temperate and boreal forests to a more humid climate in future will likely be modified by competitive relationships among trees, which may potentially affect species composition and cause a need to change forestry practices.

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Section: Discussionmentioning

confidence: 99%

The competitive status of trees determines their responsiveness to increasing atmospheric humidity – a climate trend predicted for northern latitudes

Tullus

Kupper

Kaasik

et al. 2016

Global Change Biology

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“…Papers by Sellin et al (2017), Kupper et al (2017), Kangur et al (2017), and Rohula et al (2017) are based on the results of long-term experimental studies in the free-air humidity manipulation (FAHM) station located in Rõka-Järvselja, SouthEast Estonia (Fig. 1).…”

Section: This Special Issuementioning

confidence: 99%

“…It is so far the only experimental facility in the world to study possible impacts of elevated humidity. Sellin et al (2017) discus possible mechanisms behind the growth retardation of northern deciduous trees under increasing atmospheric humidity at the FAHM experimental station. Increasing atmospheric humidity reduces water flux through vegetation and causes a reduction in tree growth rate.…”

Section: This Special Issuementioning

confidence: 99%

Indicators of climate change adaptation from molecules to ecosystems

2017

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“…En múltiples ocasiones los elementos nutritivos satisfacen la demanda de las plantas, ya sea por factores ambientales o por su disponibilidad en el medio ambiente (Millard y Grelet, 2010, 1091. La longevidad de los árboles no permite una adaptación rápida a los cambios ambientales, propiciando que sean susceptibles a los efectos del cambio climático (Sellin et al, 2017(Sellin et al, , 2136Zwieniecki y Secchi, 2015, 4).…”

Section: Introductionunclassified

Influencia de variables climáticas en el contenido de N en Carya illinoensis Koch

Colima

Reséndez

Núñez

et al. 2019

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En la Comarca Lagunera se estima que la superficie sembrada de nogal (Carya illinoensis) es de 9,208 ha-1, con un rendimiento aproximado de 1, 459 t de nuez ha-1. Las variedades que predominan en la Comarca Lagunera son Wichita y Western. Cuando la demanda de elementos nutritivos en las plantas no puede ser cubierta, estas dependen directamente de los compuestos almacenados. Uno de los elementos nutritivos más demandante por las plantas para su crecimiento y desarrollo es el nitrógeno (N); la falta de este elemento nutritivo puede provocar un bajo crecimiento. Se pretende tener conocimiento de la influencia de las variables ambientales (temperatura, irradiación y humedad relativa) sobre el porcentaje de nitrógeno almacenado en la biomasa de las dos variedades cultivadas en la zona de estudio (Western o Wichita) con la finalidad de contribuir al manejo agronómico. El objetivo del presente trabajo fue observar la variación del contenido de N en el tallo de nogal y desarrollar una función matemática que describa su comportamiento con respecto a variables ambientales (temperatura, humedad relativa, irradiación). El estudio se realizó en el campo experimental de la Universidad Agraria Antonio Narro Unidad Laguna. Se seleccionaron cuatro árboles de aproximadamente 30 años de edad de cada variedad. Se extrajeron virutas cada mes durante un año (julio de 2016 a junio de 2017). El porcentaje de N total se determinó mediante un analizador de gases, la biomasa se estimó mediante ecuaciones alométricas. Se realizó un análisis de varianza de dos factores (mes y variedad), para observar la diferencia entre el porcentaje de N en el tallo entre los meses. La relación de las variables ambientales con el porcentaje de N en el tallo se determinó mediante una regresión lineal múltiple. El porcentaje de N no fue afectado por los factores (mes y variedad). La temperatura fue la variable que más afectó el contenido de N total en el tallo del árbol en comparación con la humedad relativa e irradiación. No se encontró diferencia significativa entre los meses y las variedades (Western y Wichita). La predicción del contenido de N es menos precisa debido al tamaño del tallo del árbol. El nogal tiende a aumentar el contenido de N cuando se registran bajas temperaturas. Los compuestos almacenados pueden fluctuar en cualquier momento debido a su plasticidad.

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Growth of northern deciduous trees under increasing atmospheric humidity: possible mechanisms behind the growth retardation

Cited by 34 publications

References 114 publications

The competitive status of trees determines their responsiveness to increasing atmospheric humidity – a climate trend predicted for northern latitudes

The competitive status of trees determines their responsiveness to increasing atmospheric humidity – a climate trend predicted for northern latitudes

Indicators of climate change adaptation from molecules to ecosystems

Influencia de variables climáticas en el contenido de N en Carya illinoensis Koch

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