Articles | Volume 20, issue 13
https://doi.org/10.5194/bg-20-2769-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-20-2769-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
14 Jul 2023
Research article |
| 14 Jul 2023
| 14 Jul 2023
Quantifying vegetation indices using terrestrial laser scanning: methodological complexities and ecological insights from a Mediterranean forest
William Rupert Moore Flynn
CORRESPONDING AUTHOR
School of Geography, Queen Mary University of London, Mile End Rd,
Bethnal Green, London, E1 4NS, United Kingdom
Harry Jon Foord Owen
Department of Geography, University of Cambridge, Downing Place,
Cambridge, CB2 3EN, United Kingdom
Stuart William David Grieve
School of Geography, Queen Mary University of London, Mile End Rd,
Bethnal Green, London, E1 4NS, United Kingdom
Digital Environment Research Institute, Queen Mary University of
London, New Road, London, E1 1HH, United Kingdom
Emily Rebecca Lines
Department of Geography, University of Cambridge, Downing Place,
Cambridge, CB2 3EN, United Kingdom
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Benjamin Kargère, José Constantine, Tristram Hales, Stuart Grieve, and Stewart Johnson
Earth Surf. Dynam., 13, 403–415, https://doi.org/10.5194/esurf-13-403-2025, https://doi.org/10.5194/esurf-13-403-2025, 2025
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In this study, we analyze contributing drainage regions, a proxy for discharge in channel–hillslope coupling using landscape evolution models. We present a fractal framework which reveals that drainage area is not well defined for steady-state unchannelized locations. This clarifies the interaction between geomorphic parameters and grid resolution, furthering our understanding of channel–hillslope interactions in both computational and real-world settings.
Simon Marius Mudd, Marie-Alice Harel, Martin D. Hurst, Stuart W. D. Grieve, and Shasta M. Marrero
Earth Surf. Dynam., 4, 655–674, https://doi.org/10.5194/esurf-4-655-2016, https://doi.org/10.5194/esurf-4-655-2016, 2016
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Cosmogenic nuclide concentrations are widely used to calculate catchment-averaged denudation rates. Despite their widespread use, there is currently no open source method for calculating such rates, and the methods used to calculate catchment-averaged denudation rates vary widely between studies. Here we present an automated, open-source method for calculating basin averaged denudation rates, which may be used as a stand-alone calculator or as a front end to popular online calculators.
Stuart W. D. Grieve, Simon M. Mudd, David T. Milodowski, Fiona J. Clubb, and David J. Furbish
Earth Surf. Dynam., 4, 627–653, https://doi.org/10.5194/esurf-4-627-2016, https://doi.org/10.5194/esurf-4-627-2016, 2016
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High-resolution topographic data are becoming more prevalent, yet many areas of geomorphic interest do not have such data available. We produce topographic data at a range of resolutions to explore the influence of decreasing resolution of data on geomorphic analysis. We test the accuracy of the calculation of curvature, a hillslope sediment transport coefficient, and the identification of channel networks, providing guidelines for future use of these methods on low-resolution topographic data.
Stuart W. D. Grieve, Simon M. Mudd, Martin D. Hurst, and David T. Milodowski
Earth Surf. Dynam., 4, 309–325, https://doi.org/10.5194/esurf-4-309-2016, https://doi.org/10.5194/esurf-4-309-2016, 2016
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Relationships between the erosion rate and topographic relief of hillslopes have been demonstrated in a number of diverse settings and such patterns can be used to identify the impact of tectonic plate motion on the Earth's surface. Here we present an open-source software tool which can be used to explore these relationships in any landscape where high-resolution topographic data have been collected.
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EGUsphere, https://doi.org/10.5194/egusphere-2024-3372, https://doi.org/10.5194/egusphere-2024-3372, 2024
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Oriental plane LAI values have changed with definite pattern compatible with phenological periods. Air-soil temperatures were significantly definitive on course of mean LAI particularly during foliation. However, tree height and DBH were not significantly correlated with point-based maximum LAIs. Point-based mean LAI increased from 0.80 m2 m-2 to 2.76 m2 m-2 during foliation period. Mean tree height and DBH for point-based canopies ranged between 17.0–26.7 m and 26.5–38.2 cm respectively.
Simon Scheiter, Sophie Wolf, and Teja Kattenborn
Biogeosciences, 21, 4909–4926, https://doi.org/10.5194/bg-21-4909-2024, https://doi.org/10.5194/bg-21-4909-2024, 2024
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Biomes are widely used to map vegetation patterns at large spatial scales and to assess impacts of climate change, yet there is no consensus on a generally valid biome classification scheme. We used crowd-sourced species distribution data and trait data to assess whether trait information is suitable for delimiting biomes. Although the trait data were heterogeneous and had large gaps with respect to the spatial distribution, we found that a global trait-based biome classification was possible.
Cheng-Hsien Lin, Colleen Zumpf, Chunhwa Jang, Thomas Voigt, Guanglong Tian, Olawale Oladeji, Albert Cox, Rehnuma Mehzabin, and DoKyoung Lee
Biogeosciences, 21, 4765–4784, https://doi.org/10.5194/bg-21-4765-2024, https://doi.org/10.5194/bg-21-4765-2024, 2024
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Riparian areas are subject to environmental issues (nutrient leaching) associated with low productivity. Perennial grasses can improve ecosystem services from riparian zones while producing forage/bioenergy feedstock biomass as potential income for farmers. The forage-type buffer can be an ideal short-term candidate due to its great efficiency of nutrient scavenging; the bioenergy-type buffer showed better sustainability than the forage buffer and a continuous yield supply potential.
Gabriela Sophia, Silvia Caldararu, Benjamin David Stocker, and Sönke Zaehle
Biogeosciences, 21, 4169–4193, https://doi.org/10.5194/bg-21-4169-2024, https://doi.org/10.5194/bg-21-4169-2024, 2024
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Through an extensive global dataset of leaf nutrient resorption and a multifactorial analysis, we show that the majority of spatial variation in nutrient resorption may be driven by leaf habit and type, with thicker, longer-lived leaves having lower resorption efficiencies. Climate, soil fertility and soil-related factors emerge as strong drivers with an additional effect on its role. These results are essential for comprehending plant nutrient status, plant productivity and nutrient cycling.
Cecilia M. Prada, Katherine D. Heineman, Maria J. Pardo, Camille Piponiot, and James W. Dalling
EGUsphere, https://doi.org/10.5194/egusphere-2024-2738, https://doi.org/10.5194/egusphere-2024-2738, 2024
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The influence of elevation and soil nutrient availability on carbon stocks has not been evaluated for ectomycorrhizal forests in the tropics. In western Panama we calculated C pools in ten plots in an elevational gradient varying in relative abundance of EM-trees. We found exceptionally high aboveground soil C in high elevation EM-forest, in contrast to arbuscular mycorrhizal-dominated Andean forests.
Friedrich J. Bohn, Ana Bastos, Romina Martin, Anja Rammig, Niak Sian Koh, Giles B. Sioen, Bram Buscher, Louise Carver, Fabrice DeClerck, Moritz Drupp, Robert Fletcher, Matthew Forrest, Alexandros Gasparatos, Alex Godoy-Faúndez, Gregor Hagedorn, Martin Hänsel, Jessica Hetzer, Thomas Hickler, Cornelia B. Krug, Stasja Koot, Xiuzhen Li, Amy Luers, Shelby Matevich, H. Damon Matthews, Ina C. Meier, Awaz Mohamed, Sungmin O, David Obura, Ben Orlove, Rene Orth, Laura Pereira, Markus Reichstein, Lerato Thakholi, Peter Verburg, and Yuki Yoshida
EGUsphere, https://doi.org/10.5194/egusphere-2024-2551, https://doi.org/10.5194/egusphere-2024-2551, 2024
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An interdisciplinary collaboration of 35 international researchers from 34 institutions highlighting nine recent findings in biosphere research. Within these themes, they discuss issues arising from climate change and other anthropogenic stressors, and highlight the co-benefits of nature-based solutions and ecosystem services. They discuss recent findings in the context of global trade and international policy frameworks, and highlight lessons for local implementation of nature-based solutions.
Madeleine-Zoé Corbeil-Robitaille, Éliane Duchesne, Daniel Fortier, Christophe Kinnard, and Joël Bêty
Biogeosciences, 21, 3401–3423, https://doi.org/10.5194/bg-21-3401-2024, https://doi.org/10.5194/bg-21-3401-2024, 2024
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In the Arctic tundra, climate change is transforming the landscape, and this may impact wildlife. We focus on three nesting bird species and the islets they select as refuges from their main predator, the Arctic fox. A geomorphological process, ice-wedge polygon degradation, was found to play a key role in creating these refuges. This process is likely to affect predator–prey dynamics in the Arctic tundra, highlighting the connections between nature's physical and ecological systems.
Samuel M. Fischer, Xugao Wang, and Andreas Huth
Biogeosciences, 21, 3305–3319, https://doi.org/10.5194/bg-21-3305-2024, https://doi.org/10.5194/bg-21-3305-2024, 2024
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Understanding the drivers of forest productivity is key for accurately assessing forests’ role in the global carbon cycle. Yet, despite significant research effort, it is not fully understood how the productivity of a forest can be deduced from its stand structure. We suggest tackling this problem by identifying the share and structure of immature trees within forests and show that this approach could significantly improve estimates of forests’ net productivity and carbon uptake.
Mery Ingrid Guimarães de Alencar, Rafael D. Guariento, Bertrand Guenet, Luciana S. Carneiro, Eduardo L. Voigt, and Adriano Caliman
Biogeosciences, 21, 3165–3182, https://doi.org/10.5194/bg-21-3165-2024, https://doi.org/10.5194/bg-21-3165-2024, 2024
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Flowers are ephemeral organs for reproduction, and their litter is functionally different from leaf litter. Flowers can affect decomposition and interact with leaf litter, influencing decomposition non-additively. We show that mixing flower and leaf litter from the Tabebuia aurea tree creates reciprocal synergistic effects on decomposition in both terrestrial and aquatic environments. We highlight that flower litter input can generate biogeochemical hotspots in terrestrial ecosystems.
Salim Soltani, Olga Ferlian, Nico Eisenhauer, Hannes Feilhauer, and Teja Kattenborn
Biogeosciences, 21, 2909–2935, https://doi.org/10.5194/bg-21-2909-2024, https://doi.org/10.5194/bg-21-2909-2024, 2024
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In this research, we developed a novel method using citizen science data as alternative training data for computer vision models to map plant species in unoccupied aerial vehicle (UAV) images. We use citizen science plant photographs to train models and apply them to UAV images. We tested our approach on UAV images of a test site with 10 different tree species, yielding accurate results. This research shows the potential of citizen science data to advance our ability to monitor plant species.
Xue Feng, Ruzhen Wang, Tianpeng Li, Jiangping Cai, Heyong Liu, Hui Li, and Yong Jiang
Biogeosciences, 21, 2641–2653, https://doi.org/10.5194/bg-21-2641-2024, https://doi.org/10.5194/bg-21-2641-2024, 2024
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Plant functional traits have been considered as reflecting adaptations to environmental variations, indirectly affecting ecosystem productivity. How soil acidification affects above- and belowground biomass by altering leaf and root traits remains poorly understood. We found divergent trait responses driven by soil environmental conditions in two dominant species, resulting in a decrease in aboveground biomass and an increase in belowground biomass.
Minhua Zhang, Xiaoqing Hu, and Fangliang He
Biogeosciences, 21, 2133–2142, https://doi.org/10.5194/bg-21-2133-2024, https://doi.org/10.5194/bg-21-2133-2024, 2024
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Plant sexual systems are important to understanding the evolution and maintenance of plant diversity. We quantified region effects on their proportions while incorporating local climate factors and evolutionary history. We found regional processes and climate effects both play important roles in shaping the geographic distribution of sexual systems, providing a baseline for predicting future changes in forest communities in the context of global change.
Christian H. Mohr, Michael Dietze, Violeta Tolorza, Erwin Gonzalez, Benjamin Sotomayor, Andres Iroume, Sten Gilfert, and Frieder Tautz
Biogeosciences, 21, 1583–1599, https://doi.org/10.5194/bg-21-1583-2024, https://doi.org/10.5194/bg-21-1583-2024, 2024
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Coastal temperate rainforests, among Earth’s carbon richest biomes, are systematically underrepresented in the global network of critical zone observatories (CZOs). Introducing here a first CZO in the heart of the Patagonian rainforest, Chile, we investigate carbon sink functioning, biota-driven landscape evolution, fluxes of matter and energy, and disturbance regimes. We invite the community to join us in cross-disciplinary collaboration to advance science in this particular environment.
Jorge F. Perez-Quezada, David Trejo, Javier Lopatin, David Aguilera, Bruce Osborne, Mauricio Galleguillos, Luca Zattera, Juan L. Celis-Diez, and Juan J. Armesto
Biogeosciences, 21, 1371–1389, https://doi.org/10.5194/bg-21-1371-2024, https://doi.org/10.5194/bg-21-1371-2024, 2024
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For 8 years we sampled a temperate rainforest and a peatland in Chile to estimate their efficiency to capture carbon per unit of water lost. The efficiency is more related to the water lost than to the carbon captured and is mainly driven by evaporation instead of transpiration. This is the first report from southern South America and highlights that ecosystems might behave differently in this area, likely explained by the high annual precipitation (~ 2100 mm) and light-limited conditions.
Fredrik Lagergren, Robert G. Björk, Camilla Andersson, Danijel Belušić, Mats P. Björkman, Erik Kjellström, Petter Lind, David Lindstedt, Tinja Olenius, Håkan Pleijel, Gunhild Rosqvist, and Paul A. Miller
Biogeosciences, 21, 1093–1116, https://doi.org/10.5194/bg-21-1093-2024, https://doi.org/10.5194/bg-21-1093-2024, 2024
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The Fennoscandian boreal and mountain regions harbour a wide range of ecosystems sensitive to climate change. A new, highly resolved high-emission climate scenario enabled modelling of the vegetation development in this region at high resolution for the 21st century. The results show dramatic south to north and low- to high-altitude shifts of vegetation zones, especially for the open tundra environments, which will have large implications for nature conservation, reindeer husbandry and forestry.
Florian Zellweger, Eric Sulmoni, Johanna T. Malle, Andri Baltensweiler, Tobias Jonas, Niklaus E. Zimmermann, Christian Ginzler, Dirk Nikolaus Karger, Pieter De Frenne, David Frey, and Clare Webster
Biogeosciences, 21, 605–623, https://doi.org/10.5194/bg-21-605-2024, https://doi.org/10.5194/bg-21-605-2024, 2024
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The microclimatic conditions experienced by organisms living close to the ground are not well represented in currently used climate datasets derived from weather stations. Therefore, we measured and mapped ground microclimate temperatures at 10 m spatial resolution across Switzerland using a novel radiation model. Our results reveal a high variability in microclimates across different habitats and will help to better understand climate and land use impacts on biodiversity and ecosystems.
Andrew Kulmatiski, Martin C. Holdrege, Cristina Chirvasă, and Karen H. Beard
Biogeosciences, 21, 131–143, https://doi.org/10.5194/bg-21-131-2024, https://doi.org/10.5194/bg-21-131-2024, 2024
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Warmer air and larger precipitation events are changing the way water moves through the soil and into plants. Here we show that detailed descriptions of root distributions can predict plant growth responses to changing precipitation patterns. Shrubs and forbs increased growth, while grasses showed no response to increased precipitation intensity, and these responses were predicted by plant rooting distributions.
Bonaventure Ntirugulirwa, Etienne Zibera, Nkuba Epaphrodite, Aloysie Manishimwe, Donat Nsabimana, Johan Uddling, and Göran Wallin
Biogeosciences, 20, 5125–5149, https://doi.org/10.5194/bg-20-5125-2023, https://doi.org/10.5194/bg-20-5125-2023, 2023
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Twenty tropical tree species native to Africa were planted along an elevation gradient (1100 m, 5.4 °C difference). We found that early-successional (ES) species, especially from lower elevations, grew faster at warmer sites, while several of the late-successional (LS) species, especially from higher elevations, did not respond or grew slower. Moreover, a warmer climate increased tree mortality in LS species, but not much in ES species.
Philippe Choler
Biogeosciences, 20, 4259–4272, https://doi.org/10.5194/bg-20-4259-2023, https://doi.org/10.5194/bg-20-4259-2023, 2023
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The year 2022 was unique in that the summer heat wave and drought led to a widespread reduction in vegetation growth at high elevation in the European Alps. This impact was unprecedented in the southwestern, warm, and dry part of the Alps. Over the last 2 decades, water has become a co-dominant control of vegetation activity in areas that were, so far, primarily controlled by temperature, and the growth of mountain grasslands has become increasingly sensitive to moisture availability.
Adriana Simonetti, Raquel Fernandes Araujo, Carlos Henrique Souza Celes, Flávia Ranara da Silva e Silva, Joaquim dos Santos, Niro Higuchi, Susan Trumbore, and Daniel Magnabosco Marra
Biogeosciences, 20, 3651–3666, https://doi.org/10.5194/bg-20-3651-2023, https://doi.org/10.5194/bg-20-3651-2023, 2023
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We combined 2 years of monthly drone-acquired RGB (red–green–blue) imagery with field surveys in a central Amazon forest. Our results indicate that small gaps associated with branch fall were the most frequent. Biomass losses were partially controlled by gap area, with branch fall and snapping contributing the least and greatest relative values, respectively. Our study highlights the potential of drone images for monitoring canopy dynamics in dense tropical forests.
Silvia Caldararu, Victor Rolo, Benjamin D. Stocker, Teresa E. Gimeno, and Richard Nair
Biogeosciences, 20, 3637–3649, https://doi.org/10.5194/bg-20-3637-2023, https://doi.org/10.5194/bg-20-3637-2023, 2023
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Ecosystem manipulative experiments are large experiments in real ecosystems. They include processes such as species interactions and weather that would be omitted in more controlled settings. They offer a high level of realism but are underused in combination with vegetation models used to predict the response of ecosystems to global change. We propose a workflow using models and ecosystem experiments together, taking advantage of the benefits of both tools for Earth system understanding.
Katharina Ramskogler, Bettina Knoflach, Bernhard Elsner, Brigitta Erschbamer, Florian Haas, Tobias Heckmann, Florentin Hofmeister, Livia Piermattei, Camillo Ressl, Svenja Trautmann, Michael H. Wimmer, Clemens Geitner, Johann Stötter, and Erich Tasser
Biogeosciences, 20, 2919–2939, https://doi.org/10.5194/bg-20-2919-2023, https://doi.org/10.5194/bg-20-2919-2023, 2023
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Primary succession in proglacial areas depends on complex driving forces. To concretise the complex effects and interaction processes, 39 known explanatory variables assigned to seven spheres were analysed via principal component analysis and generalised additive models. Key results show that in addition to time- and elevation-dependent factors, also disturbances alter vegetation development. The results are useful for debates on vegetation development in a warming climate.
Zijing Li, Zhiyong Li, Xuze Tong, Lei Dong, Ying Zheng, Jinghui Zhang, Bailing Miao, Lixin Wang, Liqing Zhao, Lu Wen, Guodong Han, Frank Yonghong Li, and Cunzhu Liang
Biogeosciences, 20, 2869–2882, https://doi.org/10.5194/bg-20-2869-2023, https://doi.org/10.5194/bg-20-2869-2023, 2023
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We used random forest models and structural equation models to assess the relative importance of the present climate and paleoclimate as determinants of diversity and aboveground biomass. Results showed that paleoclimate changes and modern climate jointly determined contemporary biodiversity patterns, while community biomass was mainly affected by modern climate. These findings suggest that contemporary biodiversity patterns may be affected by processes at divergent temporal scales.
Haiyang Shi, Geping Luo, Olaf Hellwich, Alishir Kurban, Philippe De Maeyer, and Tim Van de Voorde
Biogeosciences, 20, 2727–2741, https://doi.org/10.5194/bg-20-2727-2023, https://doi.org/10.5194/bg-20-2727-2023, 2023
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In studies on the relationship between ecosystem functions and climate and plant traits, previously used data-driven methods such as multiple regression and random forest may be inadequate for representing causality due to limitations such as covariance between variables. Based on FLUXNET site data, we used a causal graphical model to revisit the control of climate and vegetation traits over ecosystem functions.
Josué Delgado-Balbuena, Henry W. Loescher, Carlos A. Aguirre-Gutiérrez, Teresa Alfaro-Reyna, Luis F. Pineda-Martínez, Rodrigo Vargas, and Tulio Arredondo
Biogeosciences, 20, 2369–2385, https://doi.org/10.5194/bg-20-2369-2023, https://doi.org/10.5194/bg-20-2369-2023, 2023
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In the semiarid grassland, an increase in soil moisture at shallow depths instantly enhances carbon release through respiration. In contrast, deeper soil water controls plant carbon uptake but with a delay of several days. Previous soil conditions, biological activity, and the size and timing of precipitation are factors that determine the amount of carbon released into the atmosphere. Thus, future changes in precipitation patterns could convert ecosystems from carbon sinks to carbon sources.
German Vargas Gutiérrez, Daniel Pérez-Aviles, Nanette Raczka, Damaris Pereira-Arias, Julián Tijerín-Triviño, L. David Pereira-Arias, David Medvigy, Bonnie G. Waring, Ember Morrisey, Edward Brzostek, and Jennifer S. Powers
Biogeosciences, 20, 2143–2160, https://doi.org/10.5194/bg-20-2143-2023, https://doi.org/10.5194/bg-20-2143-2023, 2023
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To study whether nutrient availability controls tropical dry forest responses to reductions in soil moisture, we established the first troughfall exclusion experiment in a tropical dry forest plantation system crossed with a fertilization scheme. We found that the effects of fertilization on net primary productivity are larger than the effects of a ~15 % reduction in soil moisture, although in many cases we observed an interaction between drought and nutrient additions, suggesting colimitation.
Alina Lucia Ludat and Simon Kübler
Biogeosciences, 20, 1991–2012, https://doi.org/10.5194/bg-20-1991-2023, https://doi.org/10.5194/bg-20-1991-2023, 2023
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Satellite-based analysis illustrates the impact of geological processes for the stability of the ecosystem in the Mara River basin (Kenya/Tanzania). Newly detected fault activity influences the course of river networks and modifies erosion–deposition patterns. Tectonic surface features and variations in rock chemistry lead to localized enhancement of clay and soil moisture values and seasonally stabilised vegetation growth patterns in this climatically vulnerable region.
Erica Jaakkola, Antje Gärtner, Anna Maria Jönsson, Karl Ljung, Per-Ola Olsson, and Thomas Holst
Biogeosciences, 20, 803–826, https://doi.org/10.5194/bg-20-803-2023, https://doi.org/10.5194/bg-20-803-2023, 2023
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Increased spruce bark beetle outbreaks were recently seen in Sweden. When Norway spruce trees are attacked, they increase their production of VOCs, attempting to kill the beetles. We provide new insights into how the Norway spruce act when infested and found the emitted volatiles to increase up to 700 times and saw a change in compound blend. We estimate that the 2020 bark beetle outbreak in Sweden could have increased the total monoterpene emissions from the forest by more than 10 %.
Georg Wohlfahrt, Albin Hammerle, Felix M. Spielmann, Florian Kitz, and Chuixiang Yi
Biogeosciences, 20, 589–596, https://doi.org/10.5194/bg-20-589-2023, https://doi.org/10.5194/bg-20-589-2023, 2023
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The trace gas carbonyl sulfide (COS), which is taken up by plant leaves in a process very similar to photosynthesis, is thought to be a promising proxy for the gross uptake of carbon dioxide by plants. Here we propose a new framework for estimating a key metric to that end, the so-called leaf relative uptake rate. The values we deduce by applying principles of plant optimality are considerably lower than published values and may help reduce the uncertainty of the global COS budget.
François Jonard, Andrew F. Feldman, Daniel J. Short Gianotti, and Dara Entekhabi
Biogeosciences, 19, 5575–5590, https://doi.org/10.5194/bg-19-5575-2022, https://doi.org/10.5194/bg-19-5575-2022, 2022
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We investigate the spatial and temporal patterns of light and water limitation in plant function at the ecosystem scale. Using satellite observations, we characterize the nonlinear relationships between sun-induced chlorophyll fluorescence (SIF) and water and light availability. This study highlights that soil moisture limitations on SIF are found primarily in drier environments, while light limitations are found in intermediately wet regions.
Nikolai Knapp, Sabine Attinger, and Andreas Huth
Biogeosciences, 19, 4929–4944, https://doi.org/10.5194/bg-19-4929-2022, https://doi.org/10.5194/bg-19-4929-2022, 2022
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The biomass of forests is determined by forest growth and mortality. These quantities can be estimated with different methods such as inventories, remote sensing and modeling. These methods are usually being applied at different spatial scales. The scales influence the obtained frequency distributions of biomass, growth and mortality. This study suggests how to transfer between scales, when using forest models of different complexity for a tropical forest.
Kai Chen, Kevin S. Burgess, Fangliang He, Xiang-Yun Yang, Lian-Ming Gao, and De-Zhu Li
Biogeosciences, 19, 4801–4810, https://doi.org/10.5194/bg-19-4801-2022, https://doi.org/10.5194/bg-19-4801-2022, 2022
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Why does plants' distributional range size vary enormously? This study provides evidence that seed mass, intraspecific seed mass variation, seed dispersal mode and phylogeny contribute to explaining species distribution variation on a geographic scale. Our study clearly shows the importance of including seed life-history traits in modeling and predicting the impact of climate change on species distribution of seed plants.
Ying Ying Chen, Huan Yang, Gen Sheng Bao, Xiao Pan Pang, and Zheng Gang Guo
Biogeosciences, 19, 4521–4532, https://doi.org/10.5194/bg-19-4521-2022, https://doi.org/10.5194/bg-19-4521-2022, 2022
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Investigating the effect of the presence of plateau pikas on ecosystem services of alpine meadows is helpful to understand the role of the presence of small mammalian herbivores in grasslands. The results of this study showed that the presence of plateau pikas led to higher biodiversity conservation, soil nitrogen and phosphorus maintenance, and carbon sequestration of alpine meadows, whereas it led to lower forage available to livestock and water conservation of alpine meadows.
Clement Jean Frédéric Delcourt and Sander Veraverbeke
Biogeosciences, 19, 4499–4520, https://doi.org/10.5194/bg-19-4499-2022, https://doi.org/10.5194/bg-19-4499-2022, 2022
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This study provides new equations that can be used to estimate aboveground tree biomass in larch-dominated forests of northeast Siberia. Applying these equations to 53 forest stands in the Republic of Sakha (Russia) resulted in significantly larger biomass stocks than when using existing equations. The data presented in this work can help refine biomass estimates in Siberian boreal forests. This is essential to assess changes in boreal vegetation and carbon dynamics.
Iris Johanna Aalto, Eduardo Eiji Maeda, Janne Heiskanen, Eljas Kullervo Aalto, and Petri Kauko Emil Pellikka
Biogeosciences, 19, 4227–4247, https://doi.org/10.5194/bg-19-4227-2022, https://doi.org/10.5194/bg-19-4227-2022, 2022
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Tree canopies are strong moderators of understory climatic conditions. In tropical areas, trees cool down the microclimates. Using remote sensing and field measurements we show how even intermediate canopy cover and agroforestry trees contributed to buffering the hottest temperatures in Kenya. The cooling effect was the greatest during hot days and in lowland areas, where the ambient temperatures were high. Adopting agroforestry practices in the area could assist in mitigating climate change.
Jing Wang and Xuefa Wen
Biogeosciences, 19, 4197–4208, https://doi.org/10.5194/bg-19-4197-2022, https://doi.org/10.5194/bg-19-4197-2022, 2022
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Excess radiation and low temperatures exacerbate drought impacts on canopy conductance (Gs) among transects. The primary determinant of drought stress on Gs was soil moisture on the Loess Plateau (LP) and the Mongolian Plateau (MP), whereas it was the vapor pressure deficit on the Tibetan Plateau (TP). Radiation exhibited a negative effect on Gs via drought stress within transects, while temperature had negative effects on stomatal conductance on the TP but no effect on the LP and MP.
Sylvain Monteux, Janine Mariën, and Eveline J. Krab
Biogeosciences, 19, 4089–4105, https://doi.org/10.5194/bg-19-4089-2022, https://doi.org/10.5194/bg-19-4089-2022, 2022
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Quantifying the feedback from the decomposition of thawing permafrost soils is crucial to establish adequate climate warming mitigation scenarios. Past efforts have focused on abiotic and to some extent microbial drivers of decomposition but not biotic drivers such as soil fauna. We added soil fauna (Collembola Folsomia candida) to permafrost, which introduced bacterial taxa without affecting bacterial communities as a whole but increased CO2 production (+12 %), presumably due to priming.
Mirjam Pfeiffer, Munir P. Hoffmann, Simon Scheiter, William Nelson, Johannes Isselstein, Kingsley Ayisi, Jude J. Odhiambo, and Reimund Rötter
Biogeosciences, 19, 3935–3958, https://doi.org/10.5194/bg-19-3935-2022, https://doi.org/10.5194/bg-19-3935-2022, 2022
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Smallholder farmers face challenges due to poor land management and climate change. We linked the APSIM crop model and the aDGVM2 vegetation model to investigate integrated management options that enhance ecosystem functions and services. Sustainable intensification moderately increased yields. Crop residue grazing reduced feed gaps but not for dry-to-wet season transitions. Measures to improve soil water and nutrient status are recommended. Landscape-level ecosystem management is essential.
Marina Corrêa Scalon, Imma Oliveras Menor, Renata Freitag, Karine S. Peixoto, Sami W. Rifai, Beatriz Schwantes Marimon, Ben Hur Marimon Junior, and Yadvinder Malhi
Biogeosciences, 19, 3649–3661, https://doi.org/10.5194/bg-19-3649-2022, https://doi.org/10.5194/bg-19-3649-2022, 2022
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We investigated dynamic nutrient flow and demand in a typical savanna and a transition forest to understand how similar soils and the same climate dominated by savanna vegetation can also support forest-like formations. Savanna relied on nutrient resorption from wood, and nutrient demand was equally partitioned between leaves, wood and fine roots. Transition forest relied on resorption from the canopy biomass and nutrient demand was predominantly driven by leaves.
Cited articles
Baeten, L., Verheyen, K., Wirth, C., Bruelheide, H., Bussotti, F.,
Finér, L., Jaroszewicz, B., Selvi, F., Valladares, F., Allan, E.,
Ampoorter, E., Auge, H., Avăcăriei, D., Barbaro, L., Bărnoaiea,
I., Bastias, C. C., Bauhus, J., Beinhoff, C., Benavides, R., Benneter, A.,
Berger, S., Berthold, F., Boberg, J., Bonal, D., Brüggemann, W., Carnol,
M., Castagneyrol, B., Charbonnier, Y., Chećko, E., Coomes, D., Coppi,
A., Dalmaris, E., Dănilă, G., Dawud, S. M., de Vries, W., De
Wandeler, H., Deconchat, M., Domisch, T., Duduman, G., Fischer, M., Fotelli,
M., Gessler, A., Gimeno, T. E., Granier, A., Grossiord, C., Guyot, V.,
Hantsch, L., Hättenschwiler, S., Hector, A., Hermy, M., Holland, V.,
Jactel, H., Joly, F.-X., Jucker, T., Kolb, S., Koricheva, J., Lexer, M. J.,
Liebergesell, M., Milligan, H., Müller, S., Muys, B., Nguyen, D.,
Nichiforel, L., Pollastrini, M., Proulx, R., Rabasa, S., Radoglou, K.,
Ratcliffe, S., Raulund-Rasmussen, K., Seiferling, I., Stenlid, J.,
Vesterdal, L., von Wilpert, K., Zavala, M. A., Zielinski, D., and
Scherer-Lorenzen, M.: A novel comparative research platform designed to
determine the functional significance of tree species diversity in European
forests, Persepect. Plant. Ecol., 15, 281–291,
https://doi.org/10.1016/j.ppees.2013.07.002, 2013.
Baret, F., Weiss, M., Lacaze, R., Camacho, F., Makhmara, H., Pacholcyzk, P.,
and Smets, B.: GEOV1: LAI and FAPAR essential climate variables and FCOVER
global time series capitalizing over existing products. Part 1: Principles of
development and production, Remote Sens. Environ., 137, 299–309,
https://doi.org/10.1016/j.rse.2012.12.027, 2013.
Bates, D., Mächler, M., Bolker, B., and Walker, S.: Fitting Linear
Mixed-Effects Models Using lme4, J. Sat. Softw., 67, 1–48,
https://doi.org/10.18637/jss.v067.i01, 2015.
Battaglia, M., Cherry, M. L., Beadle, C. L., Sands, P. J., and Hingston, A.:
Prediction of leaf area index in eucalypt plantations: effects of water
stress and temperature, Tree Physiol., 18, 521–528,
https://doi.org/10.1093/treephys/18.8-9.521, 1998.
Beaudet, M. and Messier, C.: Growth and morphological responses of yellow
birch, sugar maple, and beech seedlings growing under a natural light
gradient, Can. J. Forest Res., 28, 1007–1015,
https://doi.org/10.1139/x98-077, 1998.
Béland, M., Baldocchi, D. D., Widlowski, J.-L., Fournier, R. A., and
Verstraete, M. M.: On seeing the wood from the leaves and the role of voxel
size in determining leaf area distribution of forests with terrestrial
LiDAR, Agr. Forest Meterol., 184, 82–97,
https://doi.org/10.1016/j.agrformet.2013.09.005, 2014.
Breda, N. J. J.: Ground-based measurements of leaf area index: a review of
methods, instruments and current controversies, J. Exp. Bot., 54,
2403–2417, https://doi.org/10.1093/jxb/erg263, 2003.
Burt, A., Disney, M., and Calders, K.: Extracting individual trees from
lidar point clouds using treeseg, Methods Ecol. Evol., 10, 438–445,
https://doi.org/10.1111/2041-210X.13121, 2019.
Calders, K., Armston, J., Newnham, G., Herold, M., and Goodwin, N.:
Implications of sensor configuration and topography on vertical plant
profiles derived from terrestrial LiDAR, Agr. Forest Meterol., 194,
104–117, https://doi.org/10.1016/j.agrformet.2014.03.022, 2014.
Calders, K., Origo, N., Disney, M., Nightingale, J., Woodgate, W., Armston,
J., and Lewis, P.: Variability and bias in active and passive ground-based
measurements of effective plant, wood and leaf area index, Agr. Forest
Meterol., 252, 231–240, https://doi.org/10.1016/j.agrformet.2018.01.029,
2018.
Calders, K., Adams, J., Armston, J., Bartholomeus, H., Bauwens, S., Bentley,
L. P., Chave, J., Danson, F. M., Demol, M., Disney, M., Gaulton, R., Krishna
Moorthy, S. M., Levick, S. R., Saarinen, N., Schaaf, C., Stovall, A.,
Terryn, L., Wilkes, P., and Verbeeck, H.: Terrestrial laser scanning in
forest ecology: Expanding the horizon, Remote Sens. Environ., 251,
112102, https://doi.org/10.1016/j.rse.2020.112102, 2020.
Canham, C. D.: Growth and Canopy Architecture of Shade-Tolerant Trees:
Response to Canopy Gaps, Ecology, 69, 786–795,
https://doi.org/10.2307/1941027, 1988.
Carter, J. L. and White, D. A.: Plasticity in the Huber value contributes to
homeostasis in leaf water relations of a mallee Eucalypt with variation to
groundwater depth, Tree Physiol., 29, 1407–1418,
https://doi.org/10.1093/treephys/tpp076, 2009.
Caspersen, J. P., Vanderwel, M. C., Cole, W. G., and Purves, D. W.: How
Stand Productivity Results from Size- and Competition-Dependent Growth and
Mortality, PLoS ONE, 6, e28660,
https://doi.org/10.1371/journal.pone.0028660, 2011.
Castro-Díez, P., Villar-Salvador, P., Pérez-Rontomé, C.,
Maestro-Martínez, M., and Montserrat-Martí, G.: Leaf morphology
and leaf chemical composition in three Quercus (Fagaceae) species along a
rainfall gradient in NE Spain, Trees, 11, 127–134,
https://doi.org/10.1007/PL00009662, 1997.
Chen, J. M. and Black, T. A.: Defining leaf area index for non-flat leaves,
Plant Cell Environ., 15, 421–429,
https://doi.org/10.1111/j.1365-3040.1992.tb00992.x, 1992.
Coomes, D. A., Holdaway, R. J., Kobe, R. K., Lines, E. R., and Allen, R. B.:
A general integrative framework for modelling woody biomass production and
carbon sequestration rates in forests, J. Ecol., 100, 42–64,
https://doi.org/10.1111/j.1365-2745.2011.01920.x, 2012.
Disney, M.: Terrestrial LiDAR: a three-dimensional revolution in how we look
at trees, New Phytol., 222, 1736–1741, https://doi.org/10.1111/nph.15517,
2018.
Flynn, W. R. M. and Grieve, S. W. D.: will-flynn/tls_dhp_pai: tls_dhp_pai, Zenodo [code], https://doi.org/10.5281/zenodo.8134269, 2023.
Flynn, W. R. M., Owen, H. J. F., Grieve, S. W. D., and Lines, E. R.: DHP
images collected from Alto Tajo and Cuellar in Spain, V1, Zenodo [data set],
https://doi.org/10.5281/zenodo.7628072, 2023.
Gazal, R. M., Scott, R. L., Goodrich, D. C., and Williams, D. G.: Controls
on transpiration in a semiarid riparian cottonwood forest, Agr. Forest
Meteorol., 137, 56–67, https://doi.org/10.1016/j.agrformet.2006.03.002,
2006.
Gower, S. T., Vogel, J. G., Norman, J. M., Kucharik, C. J., Steele, S. J.,
and Stow, T. K.: Carbon distribution and aboveground net primary production
in aspen, jack pine, and black spruce stands in Saskatchewan and Manitoba,
Canada, J. Geophys. Res., 102, 29029–29041,
https://doi.org/10.1029/97JD02317, 1997.
Gower, S. T., Kucharik, C. J., and Norman, J. M.: Direct and Indirect
Estimation of Leaf Area Index, fAPAR, and Net Primary Production of
Terrestrial Ecosystems, Remote Sens. Environ., 70, 29–51,
https://doi.org/10.1016/S0034-4257(99)00056-5, 1999.
Grotti, M., Calders, K., Origo, N., Puletti, N., Alivernini, A., Ferrara,
C., and Chianucci, F.: An intensity, image-based method to estimate gap
fraction, canopy openness and effective leaf area index from phase-shift
terrestrial laser scanning, Agr. Forest Meteorol., 280, 107766,
https://doi.org/10.1016/j.agrformet.2019.107766, 2020.
Guzmán, J. A., Hernandez, R., and Sanchez-Azofeifa, A.: rTLS: Tools to Process Point Clouds Derived from Terrestrial Laser Scanning, https://antguz.github.io/rTLS (last access: 11 July 2023), 2021.
Hardwick, S. R., Toumi, R., Pfeifer, M., Turner, E. C., Nilus, R., and
Ewers, R. M.: The relationship between leaf area index and microclimate in
tropical forest and oil palm plantation: Forest disturbance drives changes
in microclimate, Agr. Forest Meteorol., 201, 187–195,
https://doi.org/10.1016/j.agrformet.2014.11.010, 2015.
Hijmans, R. J.: raster: Geographic Data Analysis and Modeling R package
version 3.5-21, https://CRAN.R-project.org/package=raster (last access: 11 July 2023), 2022.
Hosoi, F. and Omasa, K.: Voxel-Based 3-D Modeling of Individual Trees for
Estimating Leaf Area Density Using High-Resolution Portable Scanning Lidar,
IEEE T. Geosci. Remote, 44, 3610–3618,
https://doi.org/10.1109/TGRS.2006.881743, 2006.
Itakura, K. and Hosoi, F.: Voxel-based leaf area estimation from
three-dimensional plant images, J. Agr. Meteorol., 75, 211–216,
https://doi.org/10.2480/agrmet.d-19-00013, 2019.
Jonckheere, I., Fleck, S., Nackaerts, K., Muys, B., Coppin, P., Weiss, M.,
and Baret, F.: Review of methods for in situ leaf area index determination,
Agr. Forest Meteorol., 121, 19–35,
https://doi.org/10.1016/j.agrformet.2003.08.027, 2004.
Jonckheere, I. G. C., Muys, B., and Coppin, P.: Allometry and evaluation of
in situ optical LAI determination in Scots pine: a case study in Belgium,
Tree Physiol., 25, 723–732, https://doi.org/10.1093/treephys/25.6.723,
2005.
Jucker, T., Bouriaud, O., Avacaritei, D., Dănilă, I., Duduman, G.,
Valladares, F., and Coomes, D. A.: Competition for light and water play
contrasting roles in driving diversity-productivity relationships in Iberian
forests, J. Ecol., 102, 1202–1213, https://doi.org/10.1111/1365-2745.12276,
2014.
Jump, A. S., Ruiz-Benito, P., Greenwood, S., Allen, C. D., Kitzberger, T.,
Fensham, R., Martínez-Vilalta, J., and Lloret, F.: Structural overshoot
of tree growth with climate variability and the global spectrum of
drought-induced forest dieback, Glob. Change Biol., 23, 3742–3757,
https://doi.org/10.1111/gcb.13636, 2017.
Jupp, D. L. B., Culvenor, D. S., Lovell, J. L., Newnham, G. J., Strahler, A.
H., and Woodcock, C. E.: Estimating forest LAI profiles and structural
parameters using a ground-based laser called 'Echidna(R), Tree Physiol., 29,
171–181, https://doi.org/10.1093/treephys/tpn022, 2008.
Kamoske, A. G., Dahlin, K. M., Stark, S. C., and Serbin, S. P.: Leaf area
density from airborne LiDAR: Comparing sensors and resolutions in a
temperate broadleaf forest ecosystem, Forest Ecol. Manage., 433, 364–375,
https://doi.org/10.1016/j.foreco.2018.11.017, 2019.
Kuusk, V., Niinemets, Ü., and Valladares, F.: A major trade-off between
structural and photosynthetic investments operative across plant and needle
ages in three Mediterranean pines, Tree Physiol., 38, 543–557,
https://doi.org/10.1093/treephys/tpx139, 2018.
Leblanc, S. G. and Chen, J. M.: A practical scheme for correcting multiple
scattering effects on optical LAI measurements, Agr. Forest Meteorol., 110,
125–139, https://doi.org/10.1016/S0168-1923(01)00284-2, 2001.
Lecigne, B., Delagrange, S., and Messier, C.: Exploring trees in three
dimensions: VoxR, a novel voxel-based R package dedicated to analysing the
complex arrangement of tree crowns, Ann. Bot.-London, 121, 589–601,
https://doi.org/10.1093/aob/mcx095, 2018.
Li, S., Dai, L., Wang, H., Wang, Y., He, Z., and Lin, S.: Estimating Leaf
Area Density of Individual Trees Using the Point Cloud Segmentation of
Terrestrial LiDAR Data and a Voxel-Based Model, Remote Sens.-Basel, 9, 1202,
https://doi.org/10.3390/rs9111202, 2017.
Li, Y., Guo, Q., Tao, S., Zheng, G., Zhao, K., Xue, B., and Su, Y.:
Derivation, Validation, and Sensitivity Analysis of Terrestrial Laser
Scanning-Based Leaf Area Index, Can. J. Remote Sens., 42, 719–729,
https://doi.org/10.1080/07038992.2016.1220829, 2016.
Lines, E. R., Fischer, F. J., Owen, H. J. F., and Jucker, T.: The shape of
trees: Reimagining forest ecology in three dimensions with remote sensing,
J. Ecol., 110, 1730–1745, https://doi.org/10.1111/1365-2745.13944, 2022.
Long, J. N. and Smith, F. W.: Leaf area – sapwood area relations of
lodgepole pine as influenced by stand density and site index, Can. J.
Forest Res., 18, 247–250, 1988.
López, R., Cano, F. J., Martin-StPaul, N. K., Cochard, H., and Choat,
B.: Coordination of stem and leaf traits define different strategies to
regulate water loss and tolerance ranges to aridity, New Phytol., 230,
497–509, https://doi.org/10.1111/nph.17185, 2021.
Lovell, J. L., Jupp, D. L. B., van Gorsel, E., Jimenez-Berni, J., Hopkinson,
C., and Chasmer, L.: Foliage Profiles from Ground Based Waveform and
Discrete Point Lidar, SilviLaser, Conference, 1–9, 2011.
Ma, L., Zheng, G., Eitel, J. U. H., Magney, T. S., and Moskal, L. M.:
Determining woody-to-total area ratio using terrestrial laser scanning
(TLS), Agr. Forest Meteorol., 228–229, 217–228,
https://doi.org/10.1016/j.agrformet.2016.06.021, 2016.
Madrigal-González, J., Herrero, A., Ruiz-Benito, P., and Zavala, M. A.:
Resilience to drought in a dry forest: Insights from demographic rates,
Forest Ecol. Manage., 389, 167–175,
https://doi.org/10.1016/j.foreco.2016.12.012, 2017.
Magnani, F., Mencuccini, M., and Grace, J.: Age-related decline in stand
productivity: the role of structural acclimation under hydraulic
constraints, Plant Cell Environ., 23, 251–263,
https://doi.org/10.1046/j.1365-3040.2000.00537.x, 2000.
Mencuccini, M.: The ecological significance of long-distance water
transport: short-term regulation, long-term acclimation and the hydraulic
costs of stature across plant life forms, Plant Cell Environ., 26, 163–182,
https://doi.org/10.1046/j.1365-3040.2003.00991.x, 2003.
Mencuccini, M. and Grace, J.: Climate influences the leaf area/sapwood area
ratio in Scots pine, Tree Physiol., 15, 1–10,
https://doi.org/10.1093/treephys/15.1.1, 1995.
Monsi, M. and Saeki, T.: On the Factor Light in Plant Communities and its
Importance for Matter Production, Ann. Bot.-London, 95, 549–567,
https://doi.org/10.1093/aob/mci052, 1953.
Nakagawa, S., Johnson, P. C. D., and Schielzeth, H.: The coefficient of
determination R2 and intra-class correlation coefficient from generalized
linear mixed-effects models revisited and expanded, J. R. Soc. Interface,
14, 20170213, https://doi.org/10.1098/rsif.2017.0213, 2017.
Niinemets, Ü. and Valladares, F.: Tolerance to shade, drought, and
waterlogging of temperate northern hemisphere trees and shrubs, Ecol.
Monogr., 76, 521–547,
https://doi.org/10.1890/0012-9615(2006)076[0521:TTSDAW]2.0.CO;2, 2006.
Niu, X., Fan, J., Luo, R., Fu, W., Yuan, H., and Du, M.: Continuous
estimation of leaf area index and the woody-to-total area ratio of two
deciduous shrub canopies using fisheye webcams in a semiarid loessial region
of China, Ecol. Indic., 125, 107549,
https://doi.org/10.1016/j.ecolind.2021.107549, 2021.
Olivas, P. C., Oberbauer, S. F., Clark, D. B., Clark, D. A., Ryan, M. G.,
O'Brien, J. J., and Ordoñez, H.: Comparison of direct and indirect
methods for assessing leaf area index across a tropical rain forest
landscape, Agr. Forest Meteorol., 177, 110–116,
https://doi.org/10.1016/j.agrformet.2013.04.010, 2013.
Owen, H. J. F., Flynn, W. R. M., and Lines, E. R.: Competitive drivers of
inter-specific deviations of crown morphology from theoretical predictions
measured with Terrestrial Laser Scanning, J. Ecol., 109, 2612–2628,
https://doi.org/10.1111/1365-2745.13670, 2021.
Owen, H. J. F., Flynn, W. R. M., and Lines, E. R.: Individual TLS tree
clouds collected from both Alto Tajo and Cuellar in Spain, Zenodo [data set], https://doi.org/10.5281/zenodo.6962717, 2022.
Peppe, D. J., Royer, D. L., Cariglino, B., Oliver, S. Y., Newman, S.,
Leight, E., Enikolopov, G., Fernandez-Burgos, M., Herrera, F., Adams, J. M.,
Correa, E., Currano, E. D., Erickson, J. M., Hinojosa, L. F., Hoganson, J.
W., Iglesias, A., Jaramillo, C. A., Johnson, K. R., Jordan, G. J., Kraft, N.
J. B., Lovelock, E. C., Lusk, C. H., Niinemets, Ü., Peñuelas, J.,
Rapson, G., Wing, S. L., and Wright, I. J.: Sensitivity of leaf size and
shape to climate: global patterns and paleoclimatic applications, New
Phytol., 190, 724–739, https://doi.org/10.1111/j.1469-8137.2010.03615.x,
2011.
Pfeifer, M., Gonsamo, A., Disney, M., Pellikka, P., and Marchant, R.: Leaf
area index for biomes of the Eastern Arc Mountains: Landsat and SPOT
observations along precipitation and altitude gradients, Remote Sens.
Environ., 118, 103–115, https://doi.org/10.1016/j.rse.2011.11.009, 2012.
Phillips, N., Bond, B. J., McDowell, N. G., Ryan, M. G., and Schauer, A.:
Leaf area compounds height-related hydraulic costs of water transport in
Oregon White Oak trees, Funct. Ecol., 17, 832–840,
https://doi.org/10.1111/j.1365-2435.2003.00791.x, 2003.
Purves, D. and Pacala, S.: Predictive Models of Forest Dynamics, Science,
320, 1452–1453, https://doi.org/10.1126/science.1155359, 2008.
R Core Team: R: A Language and Environment for Statistical Computing, R Foundation for Statistical Computing, Vienna, Austria, https://www.R-project.org/ (last access: 11 July 2023), 2022.
Ridler, T. W. and Calvard, S.: Picture Thresholding Using an Iterative
Selection Method, IEEE T. Syst. Man. Cyb., 8, 630–632,
https://doi.org/10.1109/TSMC.1978.4310039, 1978.
Sea, W. B., Choler, P., Beringer, J., Weinmann, R. A., Hutley, L. B., and
Leuning, R.: Documenting improvement in leaf area index estimates from MODIS
using hemispherical photos for Australian savannas, Agr. Forest Meteorol.,
151, 1453–1461, https://doi.org/10.1016/j.agrformet.2010.12.006, 2011.
Specht, R. L. and Specht, A.: Canopy structure in Eucalyptus-dominated
communities in Australia along climatic gradients, Canopy structure in
Eucalyptus-dominated communities in Australia along climatic gradients, Acta oecologica, Oecologia plantarum, 10,
191–213, 1989.
Vicari, M. B., Disney, M., Wilkes, P., Burt, A., Calders, K., and Woodgate,
W.: Leaf and wood classification framework for terrestrial LiDAR point
clouds, Methods Ecol. Evol., 10, 680–694,
https://doi.org/10.1111/2041-210X.13144, 2019.
Warton, D. I., Wright, I. J., Falster, D. S., and Westoby, M.: Bivariate
line-fitting methods for allometry, Biol. Rev., 81, 259–291,
https://doi.org/10.1017/S1464793106007007, 2006.
Warton, D. I., Duursma, R. A., Falster, D. S., and Taskinen, S.: smatr 3 –
an R package for estimation and inference about allometric lines: The smatr 3 – an R package, Methods
Ecol. Evol., 3, 257–259, https://doi.org/10.1111/j.2041-210X.2011.00153.x,
2012.
Weiss, M., Baret, F., Smith, G. J., Jonckheere, I., and Coppin, P.: Review
of methods for in situ leaf area index (LAI) determination, Agr. Forest
Meteorol., 121, 37–53, https://doi.org/10.1016/j.agrformet.2003.08.001,
2004.
Whitehead, D.: The Estimation of Foliage Area from Sapwood Basal Area in
Scots Pine, Forestry, 51, 137–149,
https://doi.org/10.1093/forestry/51.2.137, 1978.
Wilkes, P., Lau, A., Disney, M., Calders, K., Burt, A., Gonzalez de Tanago,
J., Bartholomeus, H., Brede, B., and Herold, M.: Data acquisition
considerations for Terrestrial Laser Scanning of forest plots, Remote
Sens. Environ., 196, 140–153,
https://doi.org/10.1016/j.rse.2017.04.030, 2017.
Woodgate, W., Jones, S. D., Suarez, L., Hill, M. J., Armston, J. D., Wilkes,
P., Soto-Berelov, M., Haywood, A., and Mellor, A.: Understanding the
variability in ground-based methods for retrieving canopy openness, gap
fraction, and leaf area index in diverse forest systems, Agr. Forest
Meteorol., 205, 83–95, https://doi.org/10.1016/j.agrformet.2015.02.012,
2015.
Woodgate, W., Armston, J. D., Disney, M., Jones, S. D., Suarez, L., Hill, M.
J., Wilkes, P., and Soto-Berelov, M.: Quantifying the impact of woody
material on leaf area index estimation from hemispherical photography using
3D canopy simulations, Agr. Forest Meteorol., 226–227, 1–12,
https://doi.org/10.1016/j.agrformet.2016.05.009, 2016.
Zhang, Y., Chen, J. M., and Miller, J. R.: Determining digital hemispherical
photograph exposure for leaf area index estimation, Agr. Forest Meteorol.,
133, 166–181, https://doi.org/10.1016/j.agrformet.2005.09.009, 2005.
Zheng, G., Moskal, L. M., and Kim, S.-H.: Retrieval of Effective Leaf Area
Index in Heterogeneous Forests With Terrestrial Laser Scanning, IEEE T.
Geosci. Remote, 51, 777–786, https://doi.org/10.1109/TGRS.2012.2205003,
2013.
Zhu, X., Skidmore, A. K., Wang, T., Liu, J., Darvishzadeh, R., Shi, Y.,
Premier, J., and Heurich, M.: Improving leaf area index (LAI) estimation by
correcting for clumping and woody effects using terrestrial laser scanning,
Agr. Forest Meteorol., 263, 276–286,
https://doi.org/10.1016/j.agrformet.2018.08.026, 2018.
Short summary
Quantifying vegetation indices is crucial for ecosystem monitoring and modelling. Terrestrial laser scanning (TLS) has potential to accurately measure vegetation indices, but multiple methods exist, with little consensus on best practice. We compare three methods and extract wood-to-plant ratio, a metric used to correct for wood in leaf indices. We show corrective metrics vary with tree structure and variation among methods, highlighting the value of TLS data and importance of rigorous testing.
Quantifying vegetation indices is crucial for ecosystem monitoring and modelling. Terrestrial...
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