Search results for: Marcus Schaub

Items from 1 to 20 out of 47 results

article

Drought resistance and resilience of rhizosphere communities in forest soils from the cellular to ecosystem scale – insights from ¹³C pulse labeling

Decai Gao, Jörg Luster, Alois Zürcher, Matthias Arend, more

The link between above‐ and belowground communities is a key uncertainty in drought and rewetting effects on forest carbon (C) cycle. In young beech model ecosystems and mature naturally dry pine forest exposed to 15‐yr‐long irrigation, we performed ¹³C pulse labeling experiments, one during drought and one 2 wk after rewetting, tracing tree assimilates into rhizosphere communities. The ¹³C pulses...

article

Finding the balance between open access to forest data while safeguarding the integrity of National Forest Inventory‐derived information

Arthur Gessler, Marcus Schaub, Arun Bose, Volodymyr Trotsiuk, more

New Phytologist > 242 > 2 > 344 - 346

article

Finding balance: Tree‐ring isotopes differentiate between acclimation and stress‐induced imbalance in a long‐term irrigation experiment

Valentina Vitali, Philipp Schuler, Meisha Holloway‐Phillips, Petra D'Odorico, more

Global Change Biology > 30 > 3 > n/a - n/a

Scots pine (Pinus sylvestris L.) is a common European tree species, and understanding its acclimation to the rapidly changing climate through physiological, biochemical or structural adjustments is vital for predicting future growth. We investigated a long‐term irrigation experiment at a naturally dry forest in Switzerland, comparing Scots pine trees that have been continuously irrigated for 17 years...

article

Absence of canopy temperature variation despite stomatal adjustment in Pinus sylvestris under multidecadal soil moisture manipulation

Alice Gauthey, Christoph Bachofen, Janisse Deluigi, Margaux Didion‐Gency, more

New Phytologist > 240 > 1 > 127 - 137

Global warming and droughts push forests closer to their thermal limits, altering tree carbon uptake and growth. To prevent critical overheating, trees can adjust their thermotolerance (T_crit), temperature and photosynthetic optima (T_opt and A_opt), and canopy temperature (T_can) to stay below damaging thresholds. However, we lack an understanding of how soil droughts affect photosynthetic thermal...

article

Impact of warmer and drier conditions on tree photosynthetic properties and the role of species interactions

Margaux Didion‐Gency, Arthur Gessler, Nina Buchmann, Jonas Gisler, more

New Phytologist > 236 > 2 > 547 - 560

Increased temperature and prolonged soil moisture reduction have distinct impacts on tree photosynthetic properties. Yet, our knowledge of their combined effect is limited. Moreover, how species interactions alter photosynthetic responses to warming and drought remains unclear. Using mesocosms, we studied how photosynthetic properties of European beech and downy oak were impacted by multi‐year...

article

Soil fauna drives vertical redistribution of soil organic carbon in a long‐term irrigated dry pine forest

Claudia Guidi, Beat Frey, Ivano Brunner, Katrin Meusburger, more

Global Change Biology > 28 > 9 > 3145 - 3160

Summer droughts strongly affect soil organic carbon (SOC) cycling, but net effects on SOC storage are unclear as drought affects both C inputs and outputs from soils. Here, we explored the overlooked role of soil fauna on SOC storage in forests, hypothesizing that soil faunal activity is particularly drought‐sensitive, thereby reducing litter incorporation into the mineral soil and, eventually, long‐term...

article

Drought effects on volatile organic compound emissions from Scots pine stems

Kaisa Rissanen, Juho Aalto, Arthur Gessler, Teemu Hölttä, more

Plant, Cell & Environment > 45 > 1 > 23 - 40

Tree stems have been identified as sources of volatile organic compounds (VOCs) that play important roles in tree defence and atmospheric chemistry. Yet, we lack understanding on the magnitude and environmental drivers of stem VOC emissions in various forest ecosystems. Due to the increasing importance of extreme drought, we studied drought effects on the VOC emissions from mature Scots pine (Pinus sylvestris...

article

Drought reduces water uptake in beech from the drying topsoil, but no compensatory uptake occurs from deeper soil layers

Arthur Gessler, Lukas Bächli, Elham Rouholahnejad Freund, Kerstin Treydte, more

New Phytologist > 233 > 1 > 194 - 206

The intensity and frequency of droughts events are projected to increase in future with expected adverse effects for forests. Thus, information on the dynamics of tree water uptake from different soil layers during and after drought is crucial. We applied an in situ water isotopologue monitoring system to determine the oxygen isotope composition in soil and xylem water of European beech with a...

article

Drone‐based physiological index reveals long‐term acclimation and drought stress responses in trees

Petra D'Odorico, Leonie Schönbeck, Valentina Vitali, Katrin Meusburger, more

Plant, Cell & Environment > 44 > 11 > 3552 - 3570

Monitoring early tree physiological responses to drought is key to understanding progressive impacts of drought on forests and identifying resilient species. We combined drone‐based multispectral remote sensing with measurements of tree physiology and environmental parameters over two growing seasons in a 100‐y‐old Pinus sylvestris forest subject to 17‐y of precipitation manipulation. Our goal was...

article

Tree growth in Switzerland is increasingly constrained by rising evaporative demand

Volodymyr Trotsiuk, Flurin Babst, Charlotte Grossiord, Arthur Gessler, more

Journal of Ecology > 109 > 8 > 2981 - 2990

The response of trees to intra‐annual environmental constraints varies temporally throughout a growing season and spatially across landscapes. A better understanding of these dynamics will help us anticipate the impacts of short‐term climate variability and medium‐term climate change on forests. Using the process‐based 3‐PG forest ecosystem model, we assessed the spatial manifestation and seasonal...

article

Turgor – a limiting factor for radial growth in mature conifers along an elevational gradient

Richard L. Peters, Kathy Steppe, Henri E. Cuny, Dirk J.W. De Pauw, more

New Phytologist > 229 > 1 > 213 - 229

A valid representation of intra‐annual wood formation processes in global vegetation models is vital for assessing climate change impacts on the forest carbon stock. Yet, wood formation is generally modelled with photosynthesis, despite mounting evidence that cambial activity is rather directly constrained by limiting environmental factors. Here, we apply a state‐of‐the‐art turgor‐driven growth...

article

Determinants of legacy effects in pine trees – implications from an irrigation‐stop experiment

Roman Zweifel, Sophia Etzold, Frank Sterck, Arthur Gessler, more

New Phytologist > 227 > 4 > 1081 - 1096

Tree responses to altered water availability range from immediate (e.g. stomatal regulation) to delayed (e.g. crown size adjustment). The interplay of the different response times and processes, and their effects on long‐term whole‐tree performance, however, is hardly understood. Here we investigated legacy effects on structures and functions of mature Scots pine in a dry inner‐Alpine Swiss valley...

article

Assessing the response of forest productivity to climate extremes in Switzerland using model–data fusion

Volodymyr Trotsiuk, Florian Hartig, Maxime Cailleret, Flurin Babst, more

Global Change Biology > 26 > 4 > 2463 - 2476

The response of forest productivity to climate extremes strongly depends on ambient environmental and site conditions. To better understand these relationships at a regional scale, we used nearly 800 observation years from 271 permanent long‐term forest monitoring plots across Switzerland, obtained between 1980 and 2017. We assimilated these data into the 3‐PG forest ecosystem model using Bayesian...

article

Macro- and microscopic leaf injury triggered by ozone stress in beech foliage (Fagus sylvatica L.)

Pierre Vollenweider, Madeleine S. Günthardt-Goerg, Terry Menard, Manuela Baumgarten, more

Annals of Forest Science > 2019 > 76 > 3 > 1-17

Key message The diversity of structural injury underlying visible symptoms by ozone stress resulted from the succession of degenerative processes and programmed-cell death events, depending on the ozone uptake and varying on a year-to-year basis. Context The effects of tropospheric ozone (O₃) on the vegetation will remain a lasting concern during the twenty-first century, and deeper understanding...

article

Homeostatic levels of nonstructural carbohydrates after 13 yr of drought and irrigation in Pinus sylvestris

Leonie Schönbeck, Arthur Gessler, Günter Hoch, Nate G. McDowell, more

New Phytologist > 219 > 4 > 1314 - 1324

Nonstructural carbohydrates (NSCs) are important for the growth and survival of trees. Drought may lead to a decrease in tree growth and to NSC depletion, whereas increased soil moisture in otherwise dry ecosystems may increase growth and NSC concentrations. A long‐term (13 yr) irrigation experiment was conducted in a Pinus sylvestris‐dominated forest located at the dry margin of the species in...

article

Drought induced tree mortality – a tree‐ring isotope based conceptual model to assess mechanisms and predispositions

Arthur Gessler, Maxime Cailleret, Jobin Joseph, Leonie Schönbeck, more

New Phytologist > 219 > 2 > 485 - 490

article

Ozone effects on European forest growth—Towards an integrative approach

Maxime Cailleret, Marco Ferretti, Arthur Gessler, Andreas Rigling, more

Journal of Ecology > 106 > 4 > 1377 - 1389

The phytotoxic impacts of tropospheric ozone on cellular and molecular processes are increasingly understood and quantified. They generally lead to a decrease in plant carbon uptake that is mainly detectable at leaf scale. At larger scales, most of the empirical and modelling studies reported negative ozone effects on productivity, but the latest empirical studies and model developments temper...

article

Meteorological data series from Swiss long-term forest ecosystem research plots since 1997

Martine Rebetez, Georg Arx, Arthur Gessler, Elisabeth Graf Pannatier, more

Annals of Forest Science > 2018 > 75 > 2 > 1-7

article

Ozone affects leaf physiology and causes injury to foliage of native tree species from the tropical Atlantic Forest of southern Brazil

Bárbara Baêsso Moura, Edenise Segala Alves, Mauro Alexandre Marabesi, Silvia Ribeiro de Souza, more

Science of The Total Environment > 2018 > 610-611 > C > 912-925

In southern Brazil, the recent increase in tropospheric ozone (O₃) concentrations poses an additional threat to the biodiverse but endangered and fragmented remnants of the Atlantic Forest. Given the mostly unknown sensitivity of tropical species to oxidative stress, the principal objective of this study was to determine whether the current O₃ levels in the Metropolitan Region of Campinas (MRC), downwind...

article

Night and day – Circadian regulation of night-time dark respiration and light-enhanced dark respiration in plant leaves and canopies

Arthur Gessler, Jacques Roy, Zachary Kayler, Juan Pedro Ferrio, more

Environmental and Experimental Botany > 2017 > 137 > C > 14-25

The potential of the vegetation to sequester C is determined by the balance between assimilation and respiration. Respiration is under environmental and substrate-driven control, but the circadian clock might also contribute.To assess circadian control on night-time dark respiration (R_D) and on light enhanced dark respiration (LEDR) – the latter providing information on the metabolic reorganization...

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INFONA - science communication portal

Search results for: Marcus Schaub

Drought resistance and resilience of rhizosphere communities in forest soils from the cellular to ecosystem scale – insights from ¹³C pulse labeling

Finding the balance between open access to forest data while safeguarding the integrity of National Forest Inventory‐derived information

Finding balance: Tree‐ring isotopes differentiate between acclimation and stress‐induced imbalance in a long‐term irrigation experiment

Absence of canopy temperature variation despite stomatal adjustment in Pinus sylvestris under multidecadal soil moisture manipulation

Impact of warmer and drier conditions on tree photosynthetic properties and the role of species interactions

Soil fauna drives vertical redistribution of soil organic carbon in a long‐term irrigated dry pine forest

Drought effects on volatile organic compound emissions from Scots pine stems

Drought reduces water uptake in beech from the drying topsoil, but no compensatory uptake occurs from deeper soil layers

Drone‐based physiological index reveals long‐term acclimation and drought stress responses in trees

Tree growth in Switzerland is increasingly constrained by rising evaporative demand

Turgor – a limiting factor for radial growth in mature conifers along an elevational gradient

Determinants of legacy effects in pine trees – implications from an irrigation‐stop experiment

Assessing the response of forest productivity to climate extremes in Switzerland using model–data fusion

Macro- and microscopic leaf injury triggered by ozone stress in beech foliage (Fagus sylvatica L.)

Homeostatic levels of nonstructural carbohydrates after 13 yr of drought and irrigation in Pinus sylvestris

Drought induced tree mortality – a tree‐ring isotope based conceptual model to assess mechanisms and predispositions

Ozone effects on European forest growth—Towards an integrative approach

Meteorological data series from Swiss long-term forest ecosystem research plots since 1997

Ozone affects leaf physiology and causes injury to foliage of native tree species from the tropical Atlantic Forest of southern Brazil

Night and day – Circadian regulation of night-time dark respiration and light-enhanced dark respiration in plant leaves and canopies

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