Boris Rewald

Boris Rewald
University of Natural Resources and Life Sciences Vienna | boku · Institute of Forest Ecology

PD Dr.rer.nat.
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About

149
Publications
78,920
Reads
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2,837
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Introduction
I am a botanist studying plant ecophysiology: water and nutrient uptake under salinity and drought, plasticity of architecture, morphology and physiology under competition and stress, and plant and ecosystem carbon fluxes (with an emphasis on root systems and specialized root segments w/o mycorrhiza and disturbance effects). I work in both agricultural and forest production systems. I develop and advertise advanced approaches and methodologies which could enhance knowledge of the "hidden half".
Additional affiliations
September 2020 - present
Frontiers in Plant Sciences
Position
  • Editor
Description
  • As a Specialty Chief Editor I have the great opportunity to set out my own vision for the section Functional Plant Ecology. I pro-actively guide the growth and quality of the section.
October 2018 - present
University of Natural Resources and Life Sciences Vienna
Position
  • Deputy
November 2017 - present
University of Natural Resources and Life Sciences Vienna
Position
  • Professor (Associate)
Education
January 2012 - November 2014
April 2004 - April 2008
Georg-August-Universität Göttingen
Field of study
  • Botany, Nature Conservation, Soil Science
October 2000 - November 2003
Georg-August-Universität Göttingen
Field of study
  • Botany, Genetics, Nature conservation

Publications

Publications (149)
Article
Full-text available
Specific root respiration (RRS) is a key root trait, determining i.e. nutrient foraging and uptake efficiencies. However, a considerable uncertainty exists regarding the effects of storage time and conditions on RRS measurements. Fine root CO2 efflux rates of three plant types (tree seedling Carpinus betulus, legume Pisum sativum, grass Lolium per...
Article
Full-text available
Forests on steep slopes constitute a significant proportion of European mountain areas and are important as production and protection forests. This study describes the soil fungal community structure in a European beech-dominated mountain forest stand in the Northern Calcareous Alps and investigates how it is determined by season and soil propertie...
Article
Full-text available
Fungi are known to exert a significant influence over soil organic matter (SOM) turnover; however, understanding of the effects of fungal community structure on SOM dynamics and its consequences for ecosystem fertility is fragmentary. Here we study soil fungal guilds and SOM decomposition processes along a fertility gradient in a temperate mountai...
Article
Full-text available
Volatile organic compounds (VOCs) emitted by plants consist of a broad range of gasses which serve purposes such as protecting against herbivores, communicating with insects and neighboring plants, or increasing the tolerance to environmental stresses. Evidence is accumulating that the composition of VOC blends plays an important role in fulfilling...
Article
Full-text available
Current conservation strategies are targeted at preserving species, without explicitly aiming at the maintenance of ecosystem functions. In a physically highly connected world, the unintentional relocation of terrestrial, marine, and microbial life is therefore unavoidable and has been an integral part of human evolution for thousands of years. Her...
Conference Paper
Full-text available
The net primary productivity (NPP) of tropical forests is an important component of the global terrestrial carbon (C) cycle. The lack of field-based data, however, limits our mechanistic understanding of the drivers of NPP and C allocation. In consequence, the role of local edaphic factors for forest growth and C dynamics is unclear and introduces...
Conference Paper
Full-text available
Austria Biogenic volatile organic compounds (BVOCs) emitted by plants consist of a broad range of gasses which serve purposes such as protecting against herbivores, communicating with insects and neighboring plants, or increasing the tolerance to environmental stresses. Evidence is accumulating that the composition of BVOC blends plays an important...
Book
Full-text available
Program and Book of Abstracts of the seventh Student Conference "Featuring future in forest and soil sciences" at the Department of Forest and Soil Sciences, University of Natural Resources and Life Sciences Vienna, 16. May 2022. 22 oral presentations in 4 sessions and 36 poster presentations highlight a large part of BOKUs' current research proje...
Article
Full-text available
As a consequence of deforestation and conversion to crop and grazing land, land degradation and loss of soil organic matter (SOM) is common in the Ethiopian highlands. Afromontane dry forest with high soil carbon stocks is cleared for agricultural use, and is used to grow eucalyptus after the soils degrade, which leads to a partial recovery of soil...
Article
Full-text available
Multispectral images (MSIs) are valuable for precision agriculture due to the extra spectral information acquired compared to natural color RGB (ncRGB) images. In this paper, we thus aim to generate high spatial MSIs through a robust, deep learning-based reconstruction method using ncRGB images. Using the data from the agronomic research trial for...
Article
Full-text available
Temperate forests are increasingly subject to natural disturbance by stand replacing windthrows or bark-beetle attacks. Forests are commonly salvage logged after disturbance, whereby substantial parts of biological legacies, such as surviving trees and deadwood, are removed. Despite increasing concerns about the ecological consequences of salvage l...
Article
Full-text available
On-farm tree plantation is a form of land use where trees are planted at the edge or interspersed with crops. It has been practiced in different parts of Ethiopia due to its contribution to household economy and soil fertility. This study was carried out to evaluate the variation in tree/shrub plantations along altitudinal gradients and plantation...
Article
Full-text available
Our knowledge of processes occurring among roots, shoots, soil, and environmental drivers is enhanced by the diverse and integrated approaches of studies presented in this research topic. These approaches included different temporal scales (i.e., short- to long-term), growing conditions (i.e., field, greenhouse, common garden), methodologies (i.e.,...
Data
Supporting Information Surviving trees and deadwood moderate changes in soil fungal communities and associated functioning after natural forest disturbance and salvage logging Mathias Mayer, Christoph Rosinger, Markus Gorfer, Harald Berger, Evi Deltedesco, Claus Bässler, Jörg Müller, Linda Seifert, Boris Rewald, Douglas L. Godbold https://doi.or...
Chapter
Rising atmospheric CO2 concentration is a major cause of climate change. Release of soil carbon is one of the major causes. In the Northern part of Ethiopia, church forests are major stocks of above- and below-ground carbon. However, the significance of church forest ecosystem in soil carbon storage is not well documented. Three church forests alon...
Preprint
Full-text available
On-farm tree plantation is a form of land use where trees are planted at the edge or interspersed with crops. It has been practiced in different parts of Ethiopia due to its contribution to the household economy and soil fertility. This study was carried out to evaluate the variation in tree/shrub plantations along altitudinal gradients and plantat...
Article
Full-text available
Root traits are fundamental for the resilience of plants under stress. Image-based phenotyping can provide relevant datasets for the underlying root traits. However, root phenotyping is still hampered by methodological constrains, in particular extraction of root traits from images taken under semi-natural conditions. In this study, we thus propose...
Article
Full-text available
In the context of a recent massive increase of research on plant root functions and their impact on the environment, root ecologists currently face many important challenges to keep on generating cutting edge, meaningful and integrated knowledge. Consideration of the belowground components in plant and ecosystem studies has been consistently called...
Article
Full-text available
The effects of plants on the biosphere, atmosphere, and geosphere are key determinants of terrestrial ecosystem functioning. However, despite substantial progress made regarding plant belowground components, we are still only beginning to explore the complex relationships between root traits and functions. Drawing on literature in plant physiology,...
Article
Full-text available
The African Tropics are hotspots of modern-day land-use change and are, at the same time, of great relevance for the cycling of carbon (C) and nutrients between plants, soils and the atmosphere. However, the consequences of land conversion on biogeochemical cycles are still largely unknown as they are not studied in a landscape context that defines...
Chapter
There are high expectations that plant breeding for improved root systems will substantially advance adaptation of crops to resource‐limited environments and climate change. Image‐based phenotyping technologies provide novel opportunities to characterize root systems and overcome traditional throughput limitation in sampling and analysis. This chap...
Book
Full-text available
Abstracts of oral and poster presentations at the 6. DWB Student Conference 2021: Forest & Soil Science update on May 17, 2021 via ZOOM. Timely snapshot on research conducted by students and senior staff of the Department of Forest and Soil Sciences at the University of Natural Resources and Life Sciences, Vienna (BOKU). Oral presentations (in Alp...
Article
Full-text available
Light and nitrogen availability are among the most important environmental factors influencing leaf and root morphological traits and forest ecosystems. Understanding the variation in leaf and root traits is pivotal to the adaptive plasticity and leaf-root-specific traits in response to low light and N availability. The effects of light and N avail...
Preprint
Full-text available
The African Tropics are hotspots of modern-day land-use change and are, at the same time, of great relevance for the cycling of carbon (C) and nutrients between plants, soils and the atmosphere. However, the consequences of land conversion on biogeochemical cycles are still largely unknown as they are not studied in a landscape context that defines...
Article
Full-text available
Drought events are expected to become more frequent with climate change. To predict the effect of plant emissions on air quality and potential feedback effects on climate, the study of biogenic volatile organic compound emissions under stress is of great importance. Trees can often be subject to a combination of abiotic stresses, for example due to...
Article
Full-text available
Hyperspectral imaging has many applications. However, the high device costs and low hyperspectral image resolution are major obstacles limiting its wider application in agriculture and other fields. Hyperspectral image reconstruction from a single RGB image fully addresses these two problems. We applied permutation tests to select the robust HSCNN-...
Article
Full-text available
Northeast China is persistently affected by heavy nitrogen (N) deposition. Studying the induced variation in leaf traits is pivotal to develop an understanding of the adaptive plasticity of affected species. This study thus assesses effects of increased N deposition on leaf morphological and anatomical traits and their correlation among and with bi...
Conference Paper
Full-text available
Non-invasive imaging technologies continue to rise in use; innovation of root and rhizosphere imaging devices has however not kept pace. The lack of automated, high-resolution root imaging and analysis hampers our scientific understanding and prevents application of minirhizotrons in agricultural and environmental settings. Two complementary automa...
Preprint
Full-text available
In the context of a recent massive increase into research on plant root functions and their impact on the environment, root ecologists currently face many important challenges to keep on producing cutting edge, meaningful and integrated knowledge. Consideration of the belowground components in plant and ecosystem studies has been consistently calle...
Preprint
Full-text available
Drought events are expected to become more frequent with climate change. To predict the effect of plant emissions on air-quality and potential feedback effects on climate, the study of biogenic volatile organic compound emissions under stress is of great importance. Trees can often be subject to a combination of abiotic stresses, for example 15 due...
Book
Full-text available
Abstracts of the 5th Student conference held online (13.05.2020) at the Department of Forest and Soil Science, University of Natural resources and Life Sciences, Vienna
Poster
In 2014, the use of Glyphosate has reached 747 million kg, due to the introduction of genetically modified crops. Companies sell easy-to-use packages, including herbicide and herbicide-tolerant crop, like soybean or corn, and make out of farmers competing on increasing yields driven by the intensification of agriculture. However, this occurs at the...
Article
Full-text available
Background and Objectives: Belowground competition is an important structuring force in terrestrial plant communities. Uncertainties remain about the plasticity of functional root traits under competition, especially comparing interspecific vs. intraspecific situations. This study addresses the plasticity of fine root traits of competing Acer pseud...
Conference Paper
Full-text available
Root systems show a tremendous diversity both between and within species, suggesting a large variability in plant functioning and effects on ecosystem properties and processes. In recent decades, developments in many areas of root research have brought considerable advances in our understanding of root traits and their contribution to plant and eco...
Book
Full-text available
In this Frontiers Research Topic, we aim to provide a snapshot of the state-of-the-art of the fields of forest and tree ecology and physiology above and below ground
Conference Paper
Full-text available
The use of minirhizotron (MR) imaging systems is gaining popularity, resulting in a large amount of collected images-which need efficient and accurate processing for root trait extraction. This study proposes a neural network-based solution for automatic measurement of root length in images taken by MR systems. Current root length measurement techn...
Conference Paper
Full-text available
Minirhizotron (MR) imaging systems are key instruments to study the hidden half of plants and ecosystems, i.e. roots, mycorrhiza and their interactions with pathogens, fauna etc. in the rhizosphere. However, despite scarce data on the 'hidden half' of plants and ecosystems, e.g. needed for better understanding species' ecophysiology, breeding resou...
Article
Full-text available
Forests are of fundamental importance. Yet despite this, notoriously more research funds are directed towards agricultural systems, or wood processing at most, than towards the preservation and management of forest ecosystems under global change. Here we call for a reconsideration of economic funding decisions that should jointly take into account...
Article
Full-text available
Tree mortality from insect infestations can significantly reduce carbon storage in forest soils. In subarctic birch forests (Betula pubescens), ecosystem C cycling is largely affected by recurrent outbreaks of defoliating geometrid moths (Epirrita autumnata, Operophtera brumata). Here, we show that soil C stocks in birch forests across Fennoscandia...
Article
Full-text available
REVIEW Tropospheric ozone (O3) is one of the most prominent air pollution problems in Europe and other countries worldwide. Human health is affected by O3 via the respiratory as well the cardiovascular systems. Even though trees are present in relatively low numbers in urban areas, they can be a dominant factor in the regulation urban O3 concentrat...
Book
Full-text available
Book of Abstracts, oral and poster presentations at the Fourth Student Conference, Department of Forest and Soil Sciences, University of Natural Resources and Life Sciences, Vienna (BOKU). Vienna, 19.06.2019
Data
Supplementary material for Sandén, H., Mayer, M., Stark, S. et al. Ecosystems (2019). https://doi.org/10.1007/s10021-019-00394-6 Supplementary Table 1 Path coefficients and significances (p-values) of the final structural equation model (see Fig. 5) describing the effect of disturbance level by moth outbreaks on belowground properties and processe...
Article
Full-text available
Eragrostis tef (Teff) is a (sub-)tropical cereal crop and a staple food in Eastern Africa. As soil erosion aggravates in the Ethiopian highlands, we test the hypotheses that 1) eroded soils possess low spore densities, 2) teff growth is limited by low endophytic fungal root colonization rates, and 3) colonization rates and spore densities are addit...
Method
Full-text available
This table gives a fast overview on advantages and disadvantages of either scanner or camera-based minirhizotron imaging system available commercially.
Data
Table S1 Environmental and soil parameters of the three sampled cropland sites at Gelawdios, Tara Gedam, and Katassi in the Ethiopian highlands (mean, n = 3)
Preprint
Eragrostis tef (Teff) is a (sub-)tropical cereal crop and a staple food in Eastern Africa. As soil erosion aggravates in the Ethiopian highlands, we test the hypotheses that 1) eroded soils possess low spore densities, 2) teff growth is limited by low endophytic fungal root colonization rates, and 3) colonization rates and spore densities are addit...
Article
Improving plant resource acquisition is decisive to counter suboptimal growing conditions and towards sustainable agriculture. Key levers are interactions between plant roots and soil biota, including symbionts. To assess why certain legume varieties are tolerant or resilient to biotic and abiotic single or multiple stresses, and to better understa...
Presentation
Minirhizotron (MR) systems are versatile qualitative quantitative observation tools to study root and hyphal distribution, growth longevity in situ or in mesocosms However, the available technology is currently limiting the wide use of MR systems in research, especially due to i) moderate image quality, ii) high purchasing prices, and iii) labor in...
Article
The objective of this study was to assess the influence of different grafting methods and mycorrhizal inoculation of (salt-stressed) cucumber seedlings regarding plant establishment and nutrient absorption rates. Young cucumber (Cucumis sativus L) plants were grafted onto AMF-free, or AMF inoculated Cucurbita maxima × C. moschata transplants, by tw...
Conference Paper
Minirhizotron (MR) systems have been utilized as a reliable long-term observation tool to study root and hyphal growth, longevity and distribution in situ or mesocosms. MR systems utilize clear tubing (MR-T) of varying lengths, inserted tightly into the soil. An MR imaging device is inserted into the MR-T in order to record images spanning the leng...
Conference Paper
Full-text available
Soil organic carbon (SOC) is accumulated if inputs from biomass are greater than losses. Despite the large quantity of C stored in soil, consensus is lacking on the dynamics and the extent of land use change effects on soil C storage and quality especially for tropical ecosystems. Several field and laboratory techniques were carried out in the NW E...
Conference Paper
Progressing climate change and environmental pollution, especially air pollution, are two crucial problems we all are facing today. Measures like the Paris climate agreement and other national projects, like the air quality directive by the European Union, try to set steps to counteract the increasing traffic, environmentally harmful manufacturing...
Conference Paper
Carbon stored in soils represents the largest carbon pool of terrestrial ecosystems with global estimates of organic pools of approx. 2,400 Pg. Information on soil carbon dynamics is therefore essential to predict the future global carbon balance. Widespread recognition of the importance of soil CO2 efflux as a major source of CO2 to the atmosphere...
Conference Paper
Minirhizotron (MR) systems are a qualitative and quantitative observation tool to study root and hyphal growth, longevity and distribution in situ or mesocosms. MR systems are based on imaging the rhizosphere using transparent tubes (MR-T) inserted tightly into the soil. A new MR camera system was recently developed by cross-sectoral collaboration...
Article
Full-text available
Faba bean (Vicia faba L.) is an important source of protein but breeding for increased yield stability and stress tolerance is hampered by the scarcity of phenotyping information. Because comparisons of cultivars adapted to different agro-climatic zones improve our understanding of stress tolerance mechanisms, the root architecture and morphology o...