A5072120933- Plant Water Relations and Carbon Dynamics
- Tree-ring climate responses
- Forest ecology and management
- Forest Insect Ecology and Management
- Ecology and Vegetation Dynamics Studies
- Botany and Plant Ecology Studies
- Forest Ecology and Biodiversity Studies
- Plant and animal studies
- Hymenoptera taxonomy and phylogeny
- Insect-Plant Interactions and Control
- Horticultural and Viticultural Research
- Coleoptera Taxonomy and Distribution
- Entomological Studies and Ecology
- Tree Root and Stability Studies
- Seedling growth and survival studies
- Fire effects on ecosystems
- Plant responses to water stress
- Plant responses to elevated CO2
- Crop Yield and Soil Fertility
- Hydrology and Watershed Management Studies
- Agriculture, Plant Science, Crop Management
- Biological Control of Invasive Species
- Sugarcane Cultivation and Processing
- Species Distribution and Climate Change
- Plant Parasitism and Resistance
Mendel University in Brno
2015-2024
Siberian Federal University
2017-2023
Tomas Bata University in Zlín
2022
Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria
2020
Universidade Estadual de Campinas (UNICAMP)
2020
McMaster University
2020
Wageningen University & Research
2020
Czech University of Life Sciences Prague
2018
Institute of Wood Science and Technology
2014
Sabin Vaccine Institute
2013
The effect of temperature on stomatal conductance (gs) and corresponding gas exchange parameters was studied in two tree species with contrasting leaf anatomy ecophysiology—a broadleaf angiosperm, Populus deltoides x nigra (poplar), a needle-leaf gymnosperm, Pinus taeda (loblolly pine). Experiments were conducted growth chambers across range 19–48°C. Manipulations done well-watered drought soil conditions under ambient (400 ppm) elevated (800 air CO2 concentrations. Increases caused opening...
Stomatal conductance directly modifies plant water relations and photosynthesis. Many environmental factors affecting the stomatal have been intensively studied but temperature has largely neglected, even though it is one of fastest changing variables rising due to climate change. In this study, we describe how stomata open when increases. increased by ca 40% in a broadleaf coniferous species, poplar (Populus deltoides x nigra) loblolly pine (Pinus taeda) was 10 °C, from 30 °C 40 at constant...
Abstract Current analyses and predictions of spatially explicit patterns processes in ecology most often rely on climate data interpolated from standardized weather stations. This represents long‐term average thermal conditions at coarse spatial resolutions only. Hence, many climate‐forcing factors that operate fine spatiotemporal are overlooked. is particularly important relation to effects observation height (e.g. vegetation, snow soil characteristics) habitats varying their exposure...
Abstract Heatwaves exert disproportionately strong and sometimes irreversible impacts on forest ecosystems. These remain poorly understood at the tree species level across large spatial scales. Here, we investigate effects of record-breaking 2018 European heatwave growth water status using a collection high-temporal resolution dendrometer data from 21 53 sites. Relative to two preceding years, annual stem was not consistently reduced by but stems experienced twice temporary shrinkage due...
Phloem osmolality and its components are involved in basic cell metabolism, growth, various physiological processes including the ability of living cells to withstand drought frost. Osmolality sugar composition responses environmental stresses have been extensively studied for leaves, but less secondary phloem plant stems branches. Leaf osmotic concentration share pinitol raffinose among soluble sugars increase with increasing or cold stress, is adjusted osmoregulation. We hypothesize that...
Abstract Aim The scale of environmental data is often defined by their extent (spatial area, temporal duration) and resolution (grain size, interval). Although describing climate via these terms appropriate for most meteorological applications, ecology biogeography, the same spatiotemporal may differ in relevance to an organism. Here, we propose that proximity, or how well represent actual conditions organism exposed to, more important ecological realism than data. Location Temperature...
Abstract As major terrestrial carbon sinks, forests play an important role in mitigating climate change. The relationship between the seasonal uptake of and its allocation to woody biomass remains poorly understood, leaving a significant gap our capacity predict sequestration by forests. Here, we compare intra-annual dynamics fluxes wood formation across Northern hemisphere, from assimilation non-structural compounds their incorporation tissues. We show temporally coupled peaks (GPP) cell...
Several electrical methods have been introduced as non-invasive techniques to overcome the limited accessibility root systems. Among them, earth impedance method (EIM) represents most recent development. Applying an field between a cormus and rooted soil, EIM measures absorptive surface area (ARSA) from grounding resistance patterns. Allometric relationships suggested that this was valuable tool. Crucial assumptions for applicability of EIM, however, not tested experimentally. Focusing on...
Spring drought is becoming a frequently occurring stress factor in temperate forests. However, the understanding of tree resistance and resilience to spring remains insufficient. In this study, European beech (Fagus sylvatica L.) seedlings at early stage leaf development were moderately severely stressed for 1 month then subjected 2-week recovery period after rewatering. The study aimed disentangle complex relationships between gas exchange, vascular anatomy, morphology patterns biomass...
Climate changes and biotic responses are increasingly undermining forest health worldwide. One such impact includes the intensification of infestations by semiparasitic plants like mistletoe (Viscum album L.). Mistletoe can significantly disrupt water balance ecosystems, particularly in commercial forests. In 2023, damaged 133.7 thousand hectares forests Poland, primarily affecting Scots pine (Pinus sylvestris This study examined water-holding capacity tree canopies mistletoe-infested...
This study describes the amount and spatial distribution of above- below-ground tree skeleton—defined as woody structure stem, branches roots—in a mature Scots pine (Pinus sylvestris L.) stand in Belgium. Tree skeleton data were linked to respective needle area, such, this work provides background framework for modeling hydraulic architecture carbon balance forest stand. Using validated allometric equations, we able calculate volume, biomass corresponding surface areas individual trees Total...
Abstract Long-term water uptake of Douglas-fir and Norway spruce trees, growing in condition Moravian upland, was studied with aim comparing sap flow small roots stems. Sap measured by the heat field deformation method using multi-point sensors for stems single-point roots. Differences between species were found relationships tree roots, suggesting that is able to take from deeper soil more efficiently than spruce. This allows transpire especially during drought grow faster These biological...
Many studies have reported that hydraulic properties vary considerably between tree species, but little is known about their intraspecific variation and, therefore, capacity to adapt a warmer and drier climate. Here, we quantify phenotypic divergence clinal for embolism resistance, conductivity branch growth, in four two angiosperms (Betula pendula, Populus tremula) conifers (Picea abies, Pinus sylvestris), across latitudinal distribution Europe. Growth efficiency varied widely within...
Abstract Europe has a history rich in examples of successful and problematic introductions trees with native origin outside (non-native trees, NNT). Many international legal frameworks such as treaties conventions also the European Union have responded to global concern about potential negative impacts NNT that may become invasive natural ecosystems. It is, however, national regional legislation particular affects current future management decisions forest sector shapes landscapes Europe. We...
Conifers and other trees are constantly adapting to changes in light conditions, water/nutrient supply temperatures by physiological morphological modifications of their foliage. However, the relationship between processes anatomical characteristics foliage has been little explored trees. In this study we evaluated needle structure function Norway spruce families exposed different conditions transpiration regimes. We compared sun-exposed shaded current-year needles a control plot thinned...
Over the course of a year, tree physiological processes are not only directly affected by environmental conditions, but also tree’s own phenological stages. At same time, stages should, to certain degree, reflect physiology. However, we have rather poor knowledge details interplay between phenology and ecophysiology. The objective this study was develop better understanding links We investigated degree which various synchronized both with each other what information related can be obtained...
Abstract Diurnal variations in streamflow are becoming acknowledged as a way of analysing how changing climatic conditions and land use affects watersheds but also to understand whole. Yet not many studies from uplands below 900 mm mean annual precipitation zone available European countries. During the 2012 growing season, sampling campaign took place an upland forested micro‐watershed, Czech Republic (65 ha). Tree sap flow, rainfall temperature were measured continuously, while at discharge...
Sap flow rate was measured in the crown of a solitary specimen downy oak (Quercus pubescens) infested by mistletoe (Loranthus europaeus). Five branches and two plants were selected for analysis. The seasonal sum transpired water expressed per leaf area unit five times higher than oak. In addition, diurnal curves sap different between plants. morning, lagged one hour behind an branch unencumbered mistletoe. contrast, no time lag observed evening. proportion at night relative to total...