Bertold Marien

@article{RN979,

title = {When things get MESI: The Manipulation Experiments Synthesis Initiative—A coordinated effort to synthesize terrestrial global change experiments},

author = {Kevin Van Sundert and Sebastian Leuzinger and Martin K. -F. Bader and Scott X. Chang and Martin G. De Kauwe and Jeffrey S. Dukes and J. Adam Langley and Zilong Ma and Bertold Mariën and Simon Reynaert and Jingyi Ru and Jian Song and Benjamin Stocker and César Terrer and Joshua Thoresen and Eline Vanuytrecht and Shiqiang Wan and Kai Yue and Sara Vicca},

url = {https://doi.org/10.1111/gcb.16585},

doi = {https://doi.org/10.1111/gcb.16585},

issn = {1354-1013},

year  = {2023},

date = {2023-01-01},

journal = {Global Change Biology},

volume = {n/a},

number = {n/a},

abstract = {Abstract Responses of the terrestrial biosphere to rapidly changing environmental conditions are a major source of uncertainty in climate projections. In an effort to reduce this uncertainty, a wide range of global change experiments have been conducted that mimic future conditions in terrestrial ecosystems, manipulating CO2, temperature, and nutrient and water availability. Syntheses of results across experiments provide a more general sense of ecosystem responses to global change, and help to discern the influence of background conditions such as climate and vegetation type in determining global change responses. Several independent syntheses of published data have yielded distinct databases for specific objectives. Such parallel, uncoordinated initiatives carry the risk of producing redundant data collection efforts and have led to contrasting outcomes without clarifying the underlying reason for divergence. These problems could be avoided by creating a publicly available, updatable, curated database. Here, we report on a global effort to collect and curate 57,089 treatment responses across 3644 manipulation experiments at 1145 sites, simulating elevated CO2, warming, nutrient addition, and precipitation changes. In the resulting Manipulation Experiments Synthesis Initiative (MESI) database, effects of experimental global change drivers on carbon and nutrient cycles are included, as well as ancillary data such as background climate, vegetation type, treatment magnitude, duration, and, unique to our database, measured soil properties. Our analysis of the database indicates that most experiments are short term (one or few growing seasons), conducted in the USA, Europe, or China, and that the most abundantly reported variable is aboveground biomass. We provide the most comprehensive multifactor global change database to date, enabling the research community to tackle open research questions, vital to global policymaking. The MESI database, freely accessible at doi.org/10.5281/zenodo.7153253, opens new avenues for model evaluation and synthesis-based understanding of how global change affects terrestrial biomes. We welcome contributions to the database on GitHub.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{RN440,

title = {Timing leaf senescence: A generalized additive models for location, scale and shape approach},

author = {Bertold Mariën and Dimitri Papadimitriou and Titta Kotilainen and Paolo Zuccarini and Inge Dox and Melanie Verlinden and Thilo Heinecke and Joachim Mariën and Patrick Willems and Mieke Decoster and Aina Gascó and Holger Lange and Josep Peñuelas and Matteo Campioli},

doi = {10.1016/j.agrformet.2022.108823},

issn = {01681923},

year  = {2022},

date = {2022-01-01},

journal = {Agricultural and Forest Meteorology},

volume = {315},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{RN783,

title = {Drought elicits contrasting responses on the autumn dynamics of wood formation in late successional deciduous tree species},

author = {I. Dox and P. Prislan and J. Gricar and B. Mariën and N. Delpierre and O. Flores and S. Leys and C. B. K. Rathgeber and P. Fonti and M. Campioli},

url = {https://www.ncbi.nlm.nih.gov/pubmed/33616191},

doi = {10.1093/treephys/tpaa175},

issn = {1758-4469 (Electronic) 

0829-318X (Linking)},

year  = {2021},

date = {2021-01-01},

journal = {Tree Physiology},

abstract = {Research on wood phenology has mainly focused on reactivation of the cambium in spring. In this study we investigated if summer drought advances cessation of wood formation and if it has any influence on wood structure in late successional forest trees of the temperate zone. The end of xylogenesis was monitored between August and November in stands of European beech and pedunculate oak in Belgium for two consecutive years, 2017 and 2018, with the latter year having experienced an exceptional summer drought. Wood formation in oak was affected by the drought, with oak trees ceasing cambial activity and wood maturation about three weeks earlier in 2018 compared to 2017. Beech ceased wood formation before oak, but its wood phenology did not differ between years. Furthermore, between the two years, no significant difference was found in ring width, percentage of mature fibers in the late season, vessel size and density. In 2018, beech did show thinner fiber walls, while oak showed thicker walls. In this paper, we showed that summer drought can have an important impact on late season wood phenology xylem development. This will help to better understand forest ecosystems and improve forest models.},

note = {Dox, Inge 

Prislan, Peter 

Gricar, Jozica 

Marien, Bertold 

Delpierre, Nicolas 

Flores, Omar 

Leys, Sebastien 

Rathgeber, Cyrille B K 

Fonti, Patrick 

Campioli, Matteo 

eng 

Canada 

Tree Physiol. 2021 Feb 22. pii: 6056328. doi: 10.1093/treephys/tpaa175.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{RN443,

title = {Does drought advance the onset of autumn leaf senescence in temperate deciduous forest trees?},

author = {B. Mariën and I. Dox and H. J. De Boeck and P. Willems and S. Leys and D. Papadimitriou and M. Campioli},

doi = {10.5194/bg-18-3309-2021},

issn = {1726-4189},

year  = {2021},

date = {2021-01-01},

journal = {Biogeosciences},

volume = {18},

number = {11},

pages = {3309-3330},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{RN497,

title = {High-Resolution X-Ray Computed Tomography: A New Workflow for the Analysis of Xylogenesis and Intra-Seasonal Wood Biomass Production},

author = {Romain Lehnebach and Matteo Campioli and Jozica Gričar and Peter Prislan and Bertold Mariën and Hans Beeckman and Jan Van den Bulcke},

url = {https://www.frontiersin.org/article/10.3389/fpls.2021.698640},

doi = {10.3389/fpls.2021.698640},

issn = {1664-462X},

year  = {2021},

date = {2021-01-01},

journal = {Frontiers in Plant Science},

volume = {12},

number = {1495},

abstract = {Understanding tree growth and carbon sequestration are of crucial interest to forecast the feedback of forests to climate change. To have a global understanding of the wood formation, it is necessary to develop new methodologies for xylogenesis measurements, valid across diverse wood structures and applicable to both angiosperms and gymnosperms. In this study, the authors present a new workflow to study xylogenesis using high-resolution X-ray computed tomography (HRXCT), which is generic and offers high potential for automatization. The HXRCT-based approach was benchmarked with the current classical approach (microtomy) on three tree species with contrasted wood anatomy (Pinus nigra, Fagus sylvatica, and Quercus robur). HRXCT proved to estimate the relevant xylogenesis parameters (timing, duration, and growth rates) across species with high accuracy. HRXCT showed to be an efficient avenue to investigate tree xylogenesis for a wide range of wood anatomies, structures, and species. HRXCT also showed its potential to provide quantification of intra-annual dynamics of biomass production through high-resolution 3D mapping of wood biomass within the forming growth ring.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{RN441,

title = {On the Below- and Aboveground Phenology in Deciduous Trees: Observing the Fine-Root Lifespan, Turnover Rate, and Phenology of Fagus sylvatica L., Quercus robur L., and Betula pendula Roth for Two Growing Seasons},

author = {Bertold Mariën and Ivika Ostonen and Alice Penanhoat and Chao Fang and Hòa Xuan Nguyen and Tomáš Ghisi and Páll Sigurðsson and Patrick Willems and Matteo Campioli},

url = {https://www.mdpi.com/1999-4907/12/12/1680},

doi = {10.3390/f12121680},

issn = {1999-4907},

year  = {2021},

date = {2021-01-01},

journal = {Forests},

volume = {12},

number = {12},

pages = {1680},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{RN784,

title = {Timeline of autumn phenology in temperate deciduous trees},

author = {I. Dox and J. Gricar and L. J. Marchand and S. Leys and P. Zuccarini and C. Geron and P. Prislan and B. Marien and P. Fonti and H. Lange and J. Penuelas and J. Van den Bulcke and M. Campioli},

url = {https://www.ncbi.nlm.nih.gov/pubmed/32348497},

doi = {10.1093/treephys/tpaa058},

issn = {1758-4469 (Electronic) 

0829-318X (Linking)},

year  = {2020},

date = {2020-01-01},

journal = {Tree Physiology},

volume = {40},

number = {8},

pages = {1001-1013},

abstract = {Cessation of xylem formation or wood growth (CWG) and onset of foliar senescence (OFS) are key autumn phenological events in temperate deciduous trees. Their timing is fundamental for the development and survival of trees, ecosystem nutrient cycling and the seasonal exchange of matter and energy between the biosphere and atmosphere, and affects the impact and feedback of forests to global change. A large-scale experimental effort and improved observational methods have allowed us to compare the timing of CWG and OFS for different deciduous tree species in Western Europe, particularly in silver birch, a pioneer species, and European beech, a late-succession species, at stands of different latitudes, of different levels of site fertility, for 2 years with contrasting meteorological and drought conditions, i.e., the low moderately dry 2017 and the extremely dry 2018. Specifically, we tested whether foliar senescence started before, after or concurrently with CWG. Onset of foliar senescence and CWG occurred generally between late September and early November, with larger differences across species and sites for OFS. Foliar senescence started concurrently with CWG in most cases, except for the drier 2018 and, for beech, at the coldest site, where OFS occurred significantly later than CWG. The behavior of beech in Spain, the southern edge of its European distribution, was unclear, with no CWG, but very low wood growth at the time of OFS. Our study suggests that OFS is generally triggered by the same drivers of CWG or when wood growth decreases in late summer, indicating an overarching mechanism of sink limitation as a possible regulator of the timing of foliar senescence.},

note = {Dox, Inge 

Gricar, Jozica 

Marchand, Lorene J 

Leys, Sebastien 

Zuccarini, Paolo 

Geron, Charly 

Prislan, Peter 

Marien, Bertold 

Fonti, Patrick 

Lange, Holger 

Penuelas, Josep 

Van den Bulcke, Jan 

Campioli, Matteo 

eng 

Research Support, Non-U.S. Gov't 

Canada 

Tree Physiol. 2020 Jul 30;40(8):1001-1013. doi: 10.1093/treephys/tpaa058.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{RN444,

title = {Detecting the onset of autumn leaf senescence in deciduous forest trees of the temperate zone},

author = {B. Mariën and M. Balzarolo and I. Dox and S. Leys and M. J. Lorene and C. Geron and M. Portillo-Estrada and H. AbdElgawad and H. Asard and M. Campioli},

url = {https://www.ncbi.nlm.nih.gov/pubmed/31209882},

doi = {10.1111/nph.15991},

issn = {1469-8137 (Electronic) 

0028-646X (Linking)},

year  = {2019},

date = {2019-01-01},

journal = {New Phytol},

volume = {224},

number = {1},

pages = {166-176},

abstract = {Information on the onset of leaf senescence in temperate deciduous trees and comparisons on its assessment methods are limited, hampering our understanding of autumn dynamics. We compare five field proxies, five remote sensing proxies and two data analysis approaches to assess leaf senescence onset at one main beech stand, two stands of oak and birch, and three ancillary stands of the same species in Belgium during 2017 and 2018. Across species and sites, onset of leaf senescence was not significantly different for the field proxies based on Chl leaf content and canopy coloration, except for an advanced canopy coloration during the extremely dry and warm 2018. Two remote sensing indices provided results fully consistent with the field data. A significant lag emerged between leaf senescence onset and leaf fall, and when a threshold of 50% change in the seasonal variable under study (e.g. Chl content) was used to derive the leaf senescence onset. Our results provide unprecedented information on the quality and applicability of different proxies to assess leaf senescence onset in temperate deciduous trees. In addition, a sound base is offered to select the most suited methods for the different disciplines that need this type of data.},

note = {Marien, Bertold 

Balzarolo, Manuela 

Dox, Inge 

Leys, Sebastien 

Lorene, Marchand J 

Geron, Charly 

Portillo-Estrada, Miguel 

AbdElgawad, Hamada 

Asard, Han 

Campioli, Matteo 

eng 

714916/ERC_/European Research Council/International 

Research Support, Non-U.S. Gov't 

England 

2019/06/19 

New Phytol. 2019 Oct;224(1):166-176. doi: 10.1111/nph.15991. Epub 2019 Jul 23.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{RN442,

title = {Particulate matter accumulation capacity of plants in Hanoi, Vietnam},

author = {B. Mariën and J. Mariën and X. H. Nguyen and T. C. Nguyen and V. S. Nguyen and R. Samson},

url = {https://www.ncbi.nlm.nih.gov/pubmed/31434185},

doi = {10.1016/j.envpol.2019.07.035},

issn = {1873-6424 (Electronic) 

0269-7491 (Linking)},

year  = {2019},

date = {2019-01-01},

journal = {Environ Pollut},

volume = {253},

pages = {1079-1088},

abstract = {Population growth, urbanization, environmental conditions and rapid development have caused particulate matter (PM) levels to rise above all national and international health standards during the last two decades in many South-East Asian countries. These PM levels needs to be reduced urgently as they increase the risk of cardiovascular and respiratory health problems for millions of people. Plants have shown to efficiently reduce PM in the air by accumulation on their leaves. In order to investigate which plant species accumulate most PM, we screened 49 common plant species for their PM accumulation capacity in one of the tropical cities with the highest PM concentrations of the world, Hanoi (Vietnam). Using this subset of plants, we tested if certain leaf characteristics (leaf hydrophilicity, stomatal densities and the specific leaf area) can predict the PM accumulation efficiency of plant species. Our results show that the PM accumulation capacity varies substantially among species and that Muntingia calabura accumulated most PM in our subset of plants. We observed that plants with hydrophilic leaves, a low specific leaf area and a high abaxial stomatal density accumulated significantly more PM. Plants with these characteristics should be preferred by urban architects to reduce PM levels in tropical environments.},

note = {Marien, Bertold 

Marien, Joachim 

Nguyen, Xuan Hoa 

Nguyen, The Cuong 

Nguyen, Van Sinh 

Samson, Roeland 

eng 

England 

2019/08/23 

Environ Pollut. 2019 Oct;253:1079-1088. doi: 10.1016/j.envpol.2019.07.035. Epub 2019 Jul 19.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}