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Article
Open AccessAllometric relationships of frequently used shade tree species in cacao agroforestry systems in Sulawesi, Indonesia
Shade trees play an important role within agroforestry systems by influencing radiation and wind regimes as well as nutrient and hydrological cycling. However, there is a lack of quantitative assessments of th...
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Article
Indirect feedbacks to rising CO2
There have been many studies on the effects of enriched levels of atmospheric carbon dioxide on soils. A meta-analysis shows that emissions of other greenhouse gases increase under high-CO2 conditions. See Letter
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Article
Open AccessEnvironmental variables controlling soil respiration on diurnal, seasonal and annual time-scales in a mixed mountain forest in Switzerland
Studies on soil respiration in mountain forests are rather scarce compared to their broad distribution. Therefore, we investigated daily, seasonal and annual soil respiration rates in a mixed forest (Lägeren),...
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Article
Open AccessIntra-annual variability of anatomical structure and δ13C values within tree rings of spruce and pine in alpine, temperate and boreal Europe
Tree-ring width, wood density, anatomical structure and 13C/12C ratios expressed as δ13C-values of whole wood of Picea abies were investigated for trees growing in closed canopy forest stands. Samples were collec...
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Chapter
Biosphere–Atmosphere Exchange of Old-Growth Forests: Processes and Pattern
Old growth forests are a substantial part of the global forested area, but differ in age, structure and composition from younger or managed forests. In this chapter we review how these characteristics lead to ...
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Temperate and Boreal Old-Growth Forests: How do Their Growth Dynamics and Biodiversity Differ from Young Stands and Managed Forests?
This chapter investigates biomass, net primary productivity (NPP), and net ecosystem productivity (NEP) of boreal and temperate forest ecosystems in relation to stand density and age. Forests may accumulate wo...
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Article
Old-growth forests as global carbon sinks
It has long been assumed that ageing forests cease to accumulate carbon, and become carbon neutral. They are therefore not recognized for 'forest credits' in treaties such as the Kyoto Protocol. Now an extensi...
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Article
Open AccessRepresentative estimates of soil and ecosystem respiration in an old beech forest
Respiration has been proposed to be the main determinant of the carbon balance in European forests and is thus essential for our understanding of the carbon cycle. However, the choice of experimental design st...
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Article
Short-term variations in δ13C of ecosystem respiration reveals link between assimilation and respiration in a deciduous forest
We present a comprehensive dataset of hourly, daily, and monthly measurements of carbon isotope measurements of CO2 in canopy air from a temperate deciduous forest with the aim to identify the relevance of short-...
