A5078156732- Plant Water Relations and Carbon Dynamics
- Bioenergy crop production and management
- Plant responses to elevated CO2
- Forest ecology and management
- Forest Biomass Utilization and Management
- Atmospheric chemistry and aerosols
- Soil Carbon and Nitrogen Dynamics
- Forest Management and Policy
- Atmospheric and Environmental Gas Dynamics
- Biofuel production and bioconversion
- Tree-ring climate responses
- Ecology and Vegetation Dynamics Studies
- Remote Sensing in Agriculture
- Plant Stress Responses and Tolerance
- Soil and Unsaturated Flow
- Peatlands and Wetlands Ecology
- Fire effects on ecosystems
- Climate variability and models
- Leaf Properties and Growth Measurement
- Botany and Plant Ecology Studies
- Tree Root and Stability Studies
- Greenhouse Technology and Climate Control
- Land Use and Ecosystem Services
- Plant and animal studies
- Plant Parasitism and Resistance
University of Antwerp
2013-2024
KU Leuven
2012-2024
Czech Academy of Sciences, Global Change Research Institute
2020-2022
Slovenian Forestry Institute
2018-2020
Planta
2006-2015
Academia Sinica
2013
Gembloux Agro-Bio Tech
2012
University of Liège
2012
Università degli Studi della Tuscia
2003-2010
University of Southampton
2010
Summary This paper presents CO 2 flux data from 18 forest ecosystems, studied in the European Union funded EUROFLUX project. Overall, mean annual gross primary productivity (GPP, total amount of carbon (C) fixed during photosynthesis) these forests was 1380 ± 330 gC m −2 y −1 (mean ±SD). On average, 80% GPP respired by autotrophs and heterotrophs released back into atmosphere (total ecosystem respiration, TER = 1100 260 ). Mean soil respiration (SR) 760 340 (55% 69% TER). Among investigated...
Climate change predictions derived from coupled carbon-climate models are highly dependent on assumptions about feedbacks between the biosphere and atmosphere. One critical feedback occurs if C uptake by increases in response to fossil-fuel driven increase atmospheric [CO 2 ] (“CO fertilization”), thereby slowing rate of ]. Carbon exchanges terrestrial atmosphere often first represented as net primary productivity (NPP). However, contribution CO fertilization future global cycle has been...
The need to assess the role of forests in global cycling carbon and how that will change as atmospheric concentration CO 2 increases has spawned many experiments over a range scales. Experiments using open‐top chambers have been established at sites test whether short‐term responses tree seedlings described controlled environments would be sustained several growing seasons under field conditions. Here we review results those experiments, framework interacting cycles carbon, water nutrients,...
summary Because of their prominent role in the global carbon balance and possible sequestration, trees are very important organisms relation to climatic changes. Knowledge these processes is key understanding functioning whole forest ecosystem which can he modelled predicted based on physiological process information. This paper reviews major methods techniques used examine likely effects elevated CO 2 woody plants, as well responses . The available exposure approaches described. An overview...
• Data from 13 long-term (> 1 yr), field-based studies of the effects elevated CO2 concentration ([CO2]) on European forest tree species were analysed using meta-analysis and modelling. Meta-analysis was used to determine mean responses across data sets, fitted two commonly models stomatal conductance in order explore response environmental conditions relationship with assimilation. indicated a significant decrease (21%) growth [CO2] all studies. The significantly stronger young trees than...
Most inverse atmospheric models report considerable uptake of carbon dioxide in Europe's terrestrial biosphere. In contrast, stocks ecosystems increase at a much smaller rate, with gains forests and grassland soils almost being offset by losses from cropland peat soils. Accounting for non-carbon transfers that are not detected the fluxes bypassing ecosystem considerably reduces gap between small carbon-stock changes larger estimated models. The remaining difference could be because missing...
ABSTRACT The effects of elevated atmospheric CO 2 concentration on growth forest tree species are difficult to predict because practical limitations restrict experiments much shorter than the average life‐span a tree. Long‐term, process‐based computer models must be used extrapolate from shorter‐term experiments. A key problem is ensure strong flow information between and models. In this study, meta‐analysis techniques were summarize suite photosynthetic model parameters obtained 15...
Abstract The temperature sensitivity of soil respiration (SR) is often estimated from the seasonal changes in flux relative to those temperature, and subsequently used models interpolate or predict fluxes. However, sensitivities derived SR (from here on denoted Q 10 ) may not solely reflect SR, because can also be affected by other seasonally fluctuating conditions processes. In this manuscript, we present a case study how decoupled SR. mixed temperate forest, measured under vegetations with...
Forest ecosystems are important sinks for rising concentrations of atmospheric CO(2). In previous research, we showed that net primary production (NPP) increased by 23 +/- 2% when four experimental forests were grown under CO(2) predicted the latter half this century. Because nitrogen (N) availability commonly limits forest productivity, some combination N uptake from soil and more efficient use already assimilated trees is necessary to sustain high rates NPP free-air enrichment (FACE)....
Soil respiration (SR) was monitored periodically throughout 2001 in a Scots pine (Pinus sylvestris L.) stand located the Belgian Campine region. As expected for temperate maritime forest, temperature dominant control over SR during most of year. However, late spring and summer, when soil water content (SWC) limiting, insensitive to (Q10 = 1.24). We observed that prolonged rain-free periods, SWC less than 15% (v/v), decreased dramatically (up 50%) took SR. During such drought however, rain...
Abstract. We summed estimates of the carbon balance forests, grasslands, arable lands and peatlands to obtain country-specific terrestrial during 1990s. Forests grasslands were a net sink for carbon, whereas croplands sources in all European countries. Hence, countries dominated by tended be losing from their ecosystems, forest-dominated sequestering carbon. In some countries, draining extraction caused substantial reductions balance. Net balances typically an order magnitude smaller than...
We studied sap flow in dominant coniferous (Pinus sylvestris L.) and broadleaf (Populus canescens species understory (Prunus serotina Ehrh. Rhododendron ponticum by the heat field deformation (HFD) method. attempted to identify possible errors arising during integration scaling from single-point measurements whole trees. Large systematic of -90 300% were found when it was assumed that uniform over sapwood depth. Therefore, we recommend radial pattern should be determined first using sensors...
A rising global population and demand for protein-rich diets are increasing pressure to maximize agricultural productivity. Rising atmospheric [CO(2)] is altering temperature precipitation patterns, which challenges While provides a unique opportunity increase the productivity of C(3) crops, average yield stimulation observed date well below potential gains. Thus, there room improving However, only fraction available germplasm crops has been tested CO(2) responsiveness. Yield complex...