Articles | Volume 19, issue 17
https://doi.org/10.5194/bg-19-4227-2022
© Author(s) 2022. 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-19-4227-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
08 Sep 2022
Research article |
| 08 Sep 2022
| 08 Sep 2022
Strong influence of trees outside forest in regulating microclimate of intensively modified Afromontane landscapes
Iris Johanna Aalto
CORRESPONDING AUTHOR
Department of Geosciences and Geography, University of Helsinki, P.O. Box 64, 00014, Helsinki, Finland
Eduardo Eiji Maeda
Department of Geosciences and Geography, University of Helsinki, P.O. Box 64, 00014, Helsinki, Finland
Area of Ecology and Biodiversity, School of Biological Sciences,
Faculty of Science, University of Hong Kong, Hong Kong SAR, China
Janne Heiskanen
Department of Geosciences and Geography, University of Helsinki, P.O. Box 64, 00014, Helsinki, Finland
Institute for Atmospheric and Earth System Research, Faculty of
Science, University of Helsinki, Helsinki, Finland
Eljas Kullervo Aalto
Department of Economics, Turku School of Economics, University
of Turku, 20014, Turku, Finland
Petri Kauko Emil Pellikka
Department of Geosciences and Geography, University of Helsinki, P.O. Box 64, 00014, Helsinki, Finland
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Salim Goudarzi, Chris Soulsby, Jo Smith, Jamie Lee Stevenson, Alessandro Gimona, Scot Ramsay, Alison Hester, Iris Aalto, and Josie Geris
EGUsphere, https://doi.org/10.5194/egusphere-2024-2258, https://doi.org/10.5194/egusphere-2024-2258, 2024
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Planting trees on farmlands is now considered as one of the potential solutions to climate change. Trees can suck CO2 out of our atmosphere and store it in their trunks and in the soil beneath them. They can promote biodiversity, protect against soil erosion and drought. They can even help reduce flood risk for downstream communities. But we need models that can tell us the likely impact of trees at different locations and scales. Our study provides such a model.
Janne Heiskanen, Hanna Haurinen, Chemuku Wekesa, and Petri Pellikka
ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., X-3-2024, 179–185, https://doi.org/10.5194/isprs-annals-X-3-2024-179-2024, https://doi.org/10.5194/isprs-annals-X-3-2024-179-2024, 2024
Salim Goudarzi, Chris Soulsby, Jo Smith, Jamie Lee Stevenson, Alessandro Gimona, Scot Ramsay, Alison Hester, Iris Aalto, and Josie Geris
EGUsphere, https://doi.org/10.5194/egusphere-2024-2258, https://doi.org/10.5194/egusphere-2024-2258, 2024
Short summary
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Planting trees on farmlands is now considered as one of the potential solutions to climate change. Trees can suck CO2 out of our atmosphere and store it in their trunks and in the soil beneath them. They can promote biodiversity, protect against soil erosion and drought. They can even help reduce flood risk for downstream communities. But we need models that can tell us the likely impact of trees at different locations and scales. Our study provides such a model.
Matti Räsänen, Risto Vesala, Petri Rönnholm, Laura Arppe, Petra Manninen, Markus Jylhä, Jouko Rikkinen, Petri Pellikka, and Janne Rinne
Biogeosciences, 20, 4029–4042, https://doi.org/10.5194/bg-20-4029-2023, https://doi.org/10.5194/bg-20-4029-2023, 2023
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Fungus-growing termites recycle large parts of dead plant material in African savannas and are significant sources of greenhouse gases. We measured CO2 and CH4 fluxes from their mounds and surrounding soils in open and closed habitats. The fluxes scale with mound volume. The results show that emissions from mounds of fungus-growing termites are more stable than those from other termites. The soil fluxes around the mound are affected by the termite colonies at up to 2 m distance from the mound.
Peifeng Su, Jorma Joutsensaari, Lubna Dada, Martha Arbayani Zaidan, Tuomo Nieminen, Xinyang Li, Yusheng Wu, Stefano Decesari, Sasu Tarkoma, Tuukka Petäjä, Markku Kulmala, and Petri Pellikka
Atmos. Chem. Phys., 22, 1293–1309, https://doi.org/10.5194/acp-22-1293-2022, https://doi.org/10.5194/acp-22-1293-2022, 2022
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We regarded the banana shapes in the surface plots as a special kind of object (similar to cats) and applied an instance segmentation technique to automatically identify the new particle formation (NPF) events (especially the strongest ones), in addition to their growth rates, start times, and end times. The automatic method generalized well on datasets collected in different sites, which is useful for long-term data series analysis and obtaining statistical properties of NPF events.
Yang Liu, Simon Schallhart, Ditte Taipale, Toni Tykkä, Matti Räsänen, Lutz Merbold, Heidi Hellén, and Petri Pellikka
Atmos. Chem. Phys., 21, 14761–14787, https://doi.org/10.5194/acp-21-14761-2021, https://doi.org/10.5194/acp-21-14761-2021, 2021
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We studied the mixing ratio of biogenic volatile organic compounds (BVOCs) in a humid highland and dry lowland African ecosystem in Kenya. The mixing ratio of monoterpenoids was similar to that measured in the relevant ecosystems in western and southern Africa, while that of isoprene was lower. Modeling the emission factors (EFs) for BVOCs from the lowlands, the EFs for isoprene and β-pinene agreed well with what is assumed in the MEGAN, while those of α-pinene and limonene were higher.
Sheila Wachiye, Lutz Merbold, Timo Vesala, Janne Rinne, Matti Räsänen, Sonja Leitner, and Petri Pellikka
Biogeosciences, 17, 2149–2167, https://doi.org/10.5194/bg-17-2149-2020, https://doi.org/10.5194/bg-17-2149-2020, 2020
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Limited data on emissions in Africa translate into uncertainty during GHG budgeting. We studied annual CO2, N2O, and CH4 emissions in four land-use types in Kenyan savanna using static chambers and gas chromatography. CO2 emissions varied between seasons and land-use types. Soil moisture and vegetation explained the seasonal variation, while soil temperature was insignificant. N2O and CH4 emissions did not vary at all sites. Our results are useful in climate change mitigation interventions.
Eduardo Eiji Maeda, Xuanlong Ma, Fabien Hubert Wagner, Hyungjun Kim, Taikan Oki, Derek Eamus, and Alfredo Huete
Earth Syst. Dynam., 8, 439–454, https://doi.org/10.5194/esd-8-439-2017, https://doi.org/10.5194/esd-8-439-2017, 2017
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The Amazon River basin continuously transfers massive volumes of water from the land surface to the atmosphere, thereby having massive influence on global climate patterns. Nonetheless, the characteristics of ET across the Amazon basin, as well as the relative contribution of the multiple drivers to this process, are still uncertain. This study carries out a water balance approach to analyse seasonal patterns in ET and their relationships with water and energy drivers across the Amazon Basin.
Fabien H. Wagner, Bruno Hérault, Damien Bonal, Clément Stahl, Liana O. Anderson, Timothy R. Baker, Gabriel Sebastian Becker, Hans Beeckman, Danilo Boanerges Souza, Paulo Cesar Botosso, David M. J. S. Bowman, Achim Bräuning, Benjamin Brede, Foster Irving Brown, Jesus Julio Camarero, Plínio Barbosa Camargo, Fernanda C. G. Cardoso, Fabrício Alvim Carvalho, Wendeson Castro, Rubens Koloski Chagas, Jérome Chave, Emmanuel N. Chidumayo, Deborah A. Clark, Flavia Regina Capellotto Costa, Camille Couralet, Paulo Henrique da Silva Mauricio, Helmut Dalitz, Vinicius Resende de Castro, Jaçanan Eloisa de Freitas Milani, Edilson Consuelo de Oliveira, Luciano de Souza Arruda, Jean-Louis Devineau, David M. Drew, Oliver Dünisch, Giselda Durigan, Elisha Elifuraha, Marcio Fedele, Ligia Ferreira Fedele, Afonso Figueiredo Filho, César Augusto Guimarães Finger, Augusto César Franco, João Lima Freitas Júnior, Franklin Galvão, Aster Gebrekirstos, Robert Gliniars, Paulo Maurício Lima de Alencastro Graça, Anthony D. Griffiths, James Grogan, Kaiyu Guan, Jürgen Homeier, Maria Raquel Kanieski, Lip Khoon Kho, Jennifer Koenig, Sintia Valerio Kohler, Julia Krepkowski, José Pires Lemos-Filho, Diana Lieberman, Milton Eugene Lieberman, Claudio Sergio Lisi, Tomaz Longhi Santos, José Luis López Ayala, Eduardo Eijji Maeda, Yadvinder Malhi, Vivian R. B. Maria, Marcia C. M. Marques, Renato Marques, Hector Maza Chamba, Lawrence Mbwambo, Karina Liana Lisboa Melgaço, Hooz Angela Mendivelso, Brett P. Murphy, Joseph J. O'Brien, Steven F. Oberbauer, Naoki Okada, Raphaël Pélissier, Lynda D. Prior, Fidel Alejandro Roig, Michael Ross, Davi Rodrigo Rossatto, Vivien Rossi, Lucy Rowland, Ervan Rutishauser, Hellen Santana, Mark Schulze, Diogo Selhorst, Williamar Rodrigues Silva, Marcos Silveira, Susanne Spannl, Michael D. Swaine, José Julio Toledo, Marcos Miranda Toledo, Marisol Toledo, Takeshi Toma, Mario Tomazello Filho, Juan Ignacio Valdez Hernández, Jan Verbesselt, Simone Aparecida Vieira, Grégoire Vincent, Carolina Volkmer de Castilho, Franziska Volland, Martin Worbes, Magda Lea Bolzan Zanon, and Luiz E. O. C. Aragão
Biogeosciences, 13, 2537–2562, https://doi.org/10.5194/bg-13-2537-2016, https://doi.org/10.5194/bg-13-2537-2016, 2016
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“Blooming” of litter-mixing effects: the role of flower and leaf litter interactions on decomposition in terrestrial and aquatic ecosystems
From simple labels to semantic image segmentation: leveraging citizen science plant photographs for tree species mapping in drone imagery
Plant functional traits modulate the effects of soil acidification on above- and belowground biomass
Regional effects and local climate jointly shape the global distribution of sexual systems in woody flowering plants
Ideas and perspectives: Sensing energy and matter fluxes in a biota-dominated Patagonian landscape through environmental seismology – introducing the Pumalín Critical Zone Observatory
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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
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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.
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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.
Madeleine-Zoé Corbeil-Robitaille, Éliane Duchesne, Daniel Fortier, Christophe Kinnard, and Joël Bêty
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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.
Arsène Druel, Julien Ruffault, Hendrik Davi, André Chanzy, Olivier Marloie, Miquel De Cáceres, Florent Mouillot, Christophe François, Kamel Soudani, and Nicolas K. Martin-StPaul
EGUsphere, https://doi.org/10.5194/egusphere-2024-1800, https://doi.org/10.5194/egusphere-2024-1800, 2024
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Accurate radiation data are essential for understanding ecosystem growth. Traditional large-scale data lack the precision needed for complex terrains, e.g. mountainous regions. This study introduces a new model to enhance radiation data resolution using elevation maps, which accounts for sub-daily direct and diffuse radiation effects caused by terrain features. Tested on Mont Ventoux, this method significantly improves radiation estimates, benefiting forest growth and climate risk models.
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.
Gab Abramowitz, Anna Ukkola, Sanaa Hobeichi, Jon Cranko Page, Mathew Lipson, Martin De Kauwe, Sam Green, Claire Brenner, Jonathan Frame, Grey Nearing, Martyn Clark, Martin Best, Peter Anthoni, Gabriele Arduini, Souhail Boussetta, Silvia Caldararu, Kyeungwoo Cho, Matthias Cuntz, David Fairbairn, Craig Ferguson, Hyungjun Kim, Yeonjoo Kim, Jürgen Knauer, David Lawrence, Xiangzhong Luo, Sergey Malyshev, Tomoko Nitta, Jerome Ogee, Keith Oleson, Catherine Ottlé, Phillipe Peylin, Patricia de Rosnay, Heather Rumbold, Bob Su, Nicolas Vuichard, Anthony Walker, Xiaoni Wang-Faivre, Yunfei Wang, and Yijian Zeng
EGUsphere, https://doi.org/10.5194/egusphere-2023-3084, https://doi.org/10.5194/egusphere-2023-3084, 2024
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This paper evaluates land models – computer based models that simulate ecosystem dynamics, the land carbon, water and energy cycles and the role of land in the climate system. It uses machine learning / AI approaches to show that despite the complexity of land models, they do not perform nearly as well as they could, given the amount of information they are provided with about the prediction problem.
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.
Lilian Vallet, Charbel Abdallah, Thomas Lauvaux, Lilian Joly, Michel Ramonet, Philippe Ciais, Morgan Lopez, Irène Xueref-Remy, and Florent Mouillot
EGUsphere, https://doi.org/10.5194/egusphere-2023-2421, https://doi.org/10.5194/egusphere-2023-2421, 2023
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2022 fire season had a huge impact on European temperate forest, with several large fires exhibiting prolonged soil combustion reported. We analyzed CO and CO2 concentration recorded at nearby atmospheric towers, revealing intense smoldering combustion. We refined a fire emission model to incorporate this process. We estimated 7.95 MteqCO2 fire emission, twice the global estimate. Fires contributed to 1.97 % of the country's annual carbon footprint, reducing forest carbon sink by 30 % this year.
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.
William Rupert Moore Flynn, Harry Jon Foord Owen, Stuart William David Grieve, and Emily Rebecca Lines
Biogeosciences, 20, 2769–2784, https://doi.org/10.5194/bg-20-2769-2023, https://doi.org/10.5194/bg-20-2769-2023, 2023
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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.
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.
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.
Emma Bousquet, Arnaud Mialon, Nemesio Rodriguez-Fernandez, Stéphane Mermoz, and Yann Kerr
Biogeosciences, 19, 3317–3336, https://doi.org/10.5194/bg-19-3317-2022, https://doi.org/10.5194/bg-19-3317-2022, 2022
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Pre- and post-fire values of four climate variables and four vegetation variables were analysed at the global scale, in order to observe (i) the general fire likelihood factors and (ii) the vegetation recovery trends over various biomes. The main result of this study is that L-band vegetation optical depth (L-VOD) is the most impacted vegetation variable and takes the longest to recover over dense forests. L-VOD could then be useful for post-fire vegetation recovery studies.
Chen Yang, Yue Shi, Wenjuan Sun, Jiangling Zhu, Chengjun Ji, Yuhao Feng, Suhui Ma, Zhaodi Guo, and Jingyun Fang
Biogeosciences, 19, 2989–2999, https://doi.org/10.5194/bg-19-2989-2022, https://doi.org/10.5194/bg-19-2989-2022, 2022
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Quantifying China's forest biomass C pool is important in understanding C cycling in forests. However, most of studies on forest biomass C pool were limited to the period of 2004–2008. Here, we used a biomass expansion factor method to estimate C pool from 1977 to 2018. The results suggest that afforestation practices, forest growth, and environmental changes were the main drivers of increased C sink. Thus, this study provided an essential basis for achieving China's C neutrality target.
Anne Schucknecht, Bumsuk Seo, Alexander Krämer, Sarah Asam, Clement Atzberger, and Ralf Kiese
Biogeosciences, 19, 2699–2727, https://doi.org/10.5194/bg-19-2699-2022, https://doi.org/10.5194/bg-19-2699-2022, 2022
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Actual maps of grassland traits could improve local farm management and support environmental assessments. We developed, assessed, and applied models to estimate dry biomass and plant nitrogen (N) concentration in pre-Alpine grasslands with drone-based multispectral data and canopy height information. Our results indicate that machine learning algorithms are able to estimate both parameters but reach a better level of performance for biomass.
Ramona J. Heim, Andrey Yurtaev, Anna Bucharova, Wieland Heim, Valeriya Kutskir, Klaus-Holger Knorr, Christian Lampei, Alexandr Pechkin, Dora Schilling, Farid Sulkarnaev, and Norbert Hölzel
Biogeosciences, 19, 2729–2740, https://doi.org/10.5194/bg-19-2729-2022, https://doi.org/10.5194/bg-19-2729-2022, 2022
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Fires will probably increase in Arctic regions due to climate change. Yet, the long-term effects of tundra fires on carbon (C) and nitrogen (N) stocks and cycling are still unclear. We investigated the long-term fire effects on C and N stocks and cycling in soil and aboveground living biomass.
We found that tundra fires did not affect total C and N stocks because a major part of the stocks was located belowground in soils which were largely unaltered by fire.
Aileen B. Baird, Edward J. Bannister, A. Robert MacKenzie, and Francis D. Pope
Biogeosciences, 19, 2653–2669, https://doi.org/10.5194/bg-19-2653-2022, https://doi.org/10.5194/bg-19-2653-2022, 2022
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Forest environments contain a wide variety of airborne biological particles (bioaerosols) important for plant and animal health and biosphere–atmosphere interactions. Using low-cost sensors and a free-air carbon dioxide enrichment (FACE) experiment, we monitor the impact of enhanced CO2 on airborne particles. No effect of the enhanced CO2 treatment on total particle concentrations was observed, but a potential suppression of high concentration bioaerosol events was detected under enhanced CO2.
Melanie S. Verlinden, Hamada AbdElgawad, Arne Ven, Lore T. Verryckt, Sebastian Wieneke, Ivan A. Janssens, and Sara Vicca
Biogeosciences, 19, 2353–2364, https://doi.org/10.5194/bg-19-2353-2022, https://doi.org/10.5194/bg-19-2353-2022, 2022
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Zea mays grows in mesocosms with different soil nutrition levels. At low phosphorus (P) availability, leaf physiological activity initially decreased strongly. P stress decreased over the season. Arbuscular mycorrhizal fungi (AMF) symbiosis increased over the season. AMF symbiosis is most likely responsible for gradual reduction in P stress.
Guoyu Lan, Bangqian Chen, Chuan Yang, Rui Sun, Zhixiang Wu, and Xicai Zhang
Biogeosciences, 19, 1995–2005, https://doi.org/10.5194/bg-19-1995-2022, https://doi.org/10.5194/bg-19-1995-2022, 2022
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Little is known about the impact of rubber plantations on diversity of the Great Mekong Subregion. In this study, we uncovered latitudinal gradients of plant diversity of rubber plantations. Exotic species with high dominance result in loss of plant diversity of rubber plantations. Not all exotic species would reduce plant diversity of rubber plantations. Much more effort should be made to balance agricultural production with conservation goals in this region.
Ulrike Hiltner, Andreas Huth, and Rico Fischer
Biogeosciences, 19, 1891–1911, https://doi.org/10.5194/bg-19-1891-2022, https://doi.org/10.5194/bg-19-1891-2022, 2022
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Quantifying biomass loss rates due to stem mortality is important for estimating the role of tropical forests in the global carbon cycle. We analyse the consequences of long-term elevated stem mortality for tropical forest dynamics and biomass loss. Based on simulations, we developed a statistical model to estimate biomass loss rates of forests in different successional states from forest attributes. Assuming a doubling of tree mortality, biomass loss increased from 3.2 % yr-1 to 4.5 % yr-1.
Jon Cranko Page, Martin G. De Kauwe, Gab Abramowitz, Jamie Cleverly, Nina Hinko-Najera, Mark J. Hovenden, Yao Liu, Andy J. Pitman, and Kiona Ogle
Biogeosciences, 19, 1913–1932, https://doi.org/10.5194/bg-19-1913-2022, https://doi.org/10.5194/bg-19-1913-2022, 2022
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Although vegetation responds to climate at a wide range of timescales, models of the land carbon sink often ignore responses that do not occur instantly. In this study, we explore the timescales at which Australian ecosystems respond to climate. We identified that carbon and water fluxes can be modelled more accurately if we include environmental drivers from up to a year in the past. The importance of antecedent conditions is related to ecosystem aridity but is also influenced by other factors.
Qing Sun, Valentin H. Klaus, Raphaël Wittwer, Yujie Liu, Marcel G. A. van der Heijden, Anna K. Gilgen, and Nina Buchmann
Biogeosciences, 19, 1853–1869, https://doi.org/10.5194/bg-19-1853-2022, https://doi.org/10.5194/bg-19-1853-2022, 2022
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Drought is one of the biggest challenges for future food production globally. During a simulated drought, pea and barley mainly relied on water from shallow soil depths, independent of different cropping systems.
David Kienle, Anna Walentowitz, Leyla Sungur, Alessandro Chiarucci, Severin D. H. Irl, Anke Jentsch, Ole R. Vetaas, Richard Field, and Carl Beierkuhnlein
Biogeosciences, 19, 1691–1703, https://doi.org/10.5194/bg-19-1691-2022, https://doi.org/10.5194/bg-19-1691-2022, 2022
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Volcanic islands consist mainly of basaltic rocks. Additionally, there are often occurrences of small phonolite rocks differing in color and surface. On La Palma (Canary Islands), phonolites appear to be more suitable for plants than the omnipresent basalts. Therefore, we expected phonolites to be species-rich with larger plant individuals compared to the surrounding basaltic areas. Indeed, as expected, we found more species on phonolites and larger plant individuals in general.
Cited articles
Abdelgalil, E. A.: Deforestation in the drylands of Africa: Quantitative
modelling approach, Environ. Dev. Sustain., 6,
415–427, https://doi.org/10.1007/s10668-005-0787-1, 2004.
Abera, T. A., Heiskanen, J., Pellikka, P. K., Adhikari, H., and Maeda, E.
E.: Climatic impacts of bushland to cropland conversion in Eastern Africa,
Sci. Total. Environ., 717, 137255, https://doi.org/10.1016/j.scitotenv.2020.137255,
2020.
Adhikari, H., Heiskanen, J., Siljander, M., Maeda, E., Heikinheimo, V., and
Pellikka, P. K.: Determinants of Aboveground Biomass across an Afromontane
Landscape Mosaic in Kenya, Remote Sens., 9, 827,
https://doi.org/10.3390/rs9080827, 2017.
Adhikari, U., Nejadhashemi, A. P., and Woznicki, S. A.: Climate change and
eastern Africa: a review of impact on major crops, Food Energ.
Secur., 4, 110–132, https://doi.org/10.1002/fes3.61, 2015.
Allen, R. G., Pereira, L. S., Raes, D., and Smith, M.: Crop Evapotranspiration – Guidelines for Computing Crop Water Requirements, FAO Irrigation and Drainage Paper 56, United Nations Food and Agriculture Organization, Rome, ISBN 92-5-104219-5 1998.
Amara, E., Adhikari, H., Heiskanen, J., Siljander, M., Munyao, M., Omondi,
P., and Pellikka, P.: Aboveground Biomass Distribution in a Multi-Use
Savannah Landscape in Southeastern Kenya: Impact of Land Use and Fences,
Land, 9, 381, https://doi.org/10.3390/land9100381, 2020.
Beer, C., Reichstein, M., Tomelleri, E., Ciais, P., Jung, P., Carvalhais, N., Rödenbeck, C., Arain, M. A., Baldocchi, D., Bonan, G. B., Bondeau, A., Cescatti, A., Lasslop, G., Lindroth, A., Lomas, M., Luyssaert, S., Margolis, H., Oleson, K. W., Roupsard, O., Veenendaal, E., Viovy, N., Williams, C., Woodward, F. I., and Papale, D.: Terrestrial Gross Carbon Dioxide Uptake Distribution
and Covariation with Climate, Science, 329, 834–838,
https://doi.org/10.1126/science.1184984, 2010.
Belsky, A. J., Amundson, R. G., Duxbury, J. M., Riha, S. J., Ali, A. R., and
Mwonga, S. M.: The Effects of Trees on Their Physical, Chemical and
Biological Environments in a Semi-Arid Savanna in Kenya, J. Appl. Ecol., 26,
1005–1024, https://doi.org/10.2307/2403708, 1989.
Bense, V. F., Read, T., and Verhoef, A.: Using distributed temperature
sensing to monitor field scale dynamics of ground surface temperature and
related substrate heat flux, Agr. Forest. Meteorol., 220, 207–215,
https://doi.org/10.1016/j.agrformet.2016.01.138, 2016.
Cairns, J. E., Hellin, J., Sonder, K., Araus, J. L., MacRoberts, J. F.,
Thierfelder, C., and Prasanna, B. M.: Adapting maize production to climate
change in sub-Saharan Africa, Food Secur., 5, 345–360,
https://doi.org/10.1007/s12571-013-0256-x, 2013.
Chakravarty, S., Pala, N. A., Tamang, B., Sarkar, B. C., Abna Manohar K.,
Rai, P., Puri, A., and Shukla, G.: Ecosystem services of Trees Outside
Forest, in: Sustainable Agriculture, Forest and Environmental Management,
edited by: Jhariya, M. K., Banerjee, A., Meena, R. S., and Yadav, D. K.,
Springer, https://doi.org/10.1007/978-981-13-6830-1_10, 2019.
Chen, J., Saunders, S. C., Crow, T. R., and Naiman, R. J.: Microclimate in
forest ecosystem and landscape ecology, Bioscience, 49, 288–297,
https://doi.org/10.2307/1313612, 1999.
Das, A., Nagendra, H., Anand, M., and Bunyan, M.: Topographic and
Bioclimatic Determinants of the Occurrence of Forest and Grassland in
Tropical Montane Forest-Grassland Mosaics of the Western Ghats, India, PLoS
One, 10, e0130566, https://doi.org/10.1371/journal.pone.0130566, 2015.
Davis, K., T., Dobrowski, S. Z., Holden, Z. A., Higuera, P. E., and
Abatzoglou, J. T.: Microclimate buffering in forests of the future: the role
of local water balance, Ecography, 42, 1–11,
https://doi.org/10.1111/ecog.03836, 2019.
De Frenne, P., Rodríguez-Sánchez, F., Coomes, D. A., Baeten, L., Verstraeten, G., Vellend, M., Bernhardt-Römermann, M.,
Brown, C. D., Brunet, J., Cornelis, J., Decocq, G. M., Dierschke, H., Eriksson, O., Gilliam, F. S., Hédl, R., Heinken, T., Hermy, M., Hommel, P., Jenkins, M. A., Kelly, D. L., Kirby, K. J., Mitchell, F. J. G., Naaf, T., Newman, M., Peterken, G., Petrik, P., Schultz, J., Sonnier, G., Van Calster, H., Waller, D. M., Walther, G-R., White, P. S, Woods, K. D., Wulf, M., Graae, B. J., and Verheyen, K.: Microclimate moderates
plant responses to macroclimate warming, P. Natl. Acad. Sci. USA, 110,
18561–18565, https://doi.org./10.1073/pnas.1311190110, 2013.
De Frenne, P., Zellweger, F., Rodríguez-Sánchez, F., Scheffers, B. R., Hylander, K., Luoto, M., Vellend, M., Verheyen, K., and Lenoir, J.: Global buffering of
temperatures under forest canopies, Nat. Ecol. Evol., 3, 744–749,
https://doi.org/10.1038/s41559-019-0842-1, 2019.
De Frenne, P., Lenoir, J., Luoto, M., Scheffers, B. R., Zellweger, F., Aalto, J., Ashcroft, M. B., Christiansen, D. M., Decocq, G., De Pauw, K., Govaert, S., Greiser, C., Gril, E., Hampe, A., Jucker, T., Klinges, D. H., Koelemeijer, I. A., Lembrechts, J. J., Marrec, R., Meeussen, C., Ogée, J., Tyystjärvi, V., Vangansbeke, P., and Hylander, K.: Forest microclimates and climate change:
Importance, drivers and future research agenda, Glob. Chang Biol., 27,
2279–2297, https://doi.org/10.1111/gcb.15569, 2021.
Ellison, D., Morris, C.E., Locatelli, B., Sheil, D., Cohen, J., Murdiyarso, D., Gutierrez, V., van Noordwijk, M., Creed, I. F., Pokorny, J., Gaveau, D., Spracklen, D. V., Tobella, A. B., Ilstedt, U., Teuling, A. J., Gebrehiwot, S. G., Sands, D. C., Muys, B., Verbist, B., Springgay, E., Sugandi, Y., and Sullivan, C. A.: Trees, forests and water: Cool insights for a hot
world, Global Environ. Chang., 43, 51–61,
https://doi.org/10.1016/j.gloenvcha.2017.01.002, 2017.
Erdogan, H. E., Pellikka, P. K., and Clark, B.: Modelling the impact of
land-cover change on potential soil loss in the Taita Hills, Kenya, between
1987 and 2003 using remote-sensing and geospatial data, Int. J. Remote
Sens., 32, 5919–5945, https://doi.org/10.1080/01431161.2010.499379, 2011.
Ewers, R. M. and Banks-Leite, C.: Fragmentation Impairs the Microclimate
Buffering Effect of Tropical Forests, PLoS One, 8, e58093,
https://doi.org/10.1371/journal.pone.0058093, 2013.
FAO: Global Forest Resources Assessment 2000 (FRA 2000), Food and Agriculture
Organization of the United Nations, Rome, Italy,
ISBN 978-9251046425, 2000.
FAO: FRA 2015 terms and definitions, Forest Resources Assessment Working Paper 180, Food and Agricultural Organization of the United Nations, Rome, Italy, 2012.
FAO: Global forest resources assessment 2015. How are the world's forests
changing?, 2nd Edn., Food and Agriculture Organization of the United Nations,
Rome, Italy, ISBN 978-92-5-109283-5, 2016.
Agriculture (Farm Forestry) Rules: Cap. 318 (KEN), https://www.fao.org/faolex/results/details/en/c/LEX-FAOC101360 (last access: 8 April 2021), 2009.
Geiger, R.: The climate near the ground, 4th Edn., Harvard
University Press, United States of America, ISBN 978-0674135000, 1980.
Goward, S. N. and Hope, A. S.: Evapotranspiration from combined reflected
solar and emitted terrestrial radiation: Preliminary FIFE results from AVHRR
data, Adv. Space Res., 9, 239–249, 1989.
Goward, S. N., Cruickshanks, G. D., and Hope, A. S.: Observed relation
between thermal emission and reflected spectral radiance of a complex
vegetated landscape, Remote Sens. Environ., 18, 137–146, 1985.
Griffin, A. M., Popescu, S. C., and Zhao, K.: Using LIDAR and Normalized
Difference Vegetation Index to remotely determine LAI and percent canopy
cover, in: SilviLaser, Edinburgh, United Kingdom, 17–19 September,
446–455, 2008.
He, J., Zhao, W., Li, A., Wen, F., and Yu, D.: The impact of the terrain
effect on land surface temperature variation based on Landsat-8 observations
in mountainous areas, Int. J. Remote Sens., 40, 1808–1827,
https://doi.org/10.1080/01431161.2018.1466082, 2019.
Heiskanen, J., Korhonen, L., Hietanen, J., and Pellikka, P. K.: Use of
airborne lidar for estimating canopy gap fraction and leaf area index of
tropical montane forests, Int. J. Remote Sens., 36, 2569–2583,
https://doi.org/10.1080/01431161.2015.1041177, 2015a.
Heiskanen, J., Korhonen, L., Hietanen, J., Heikinheimo, V., Schäfer, E.,
and Pellikka, P. K. E.: Comparison of field and airborne laser scanning
based crown cover estimates across land cover types in Kenya, Int. Arch.
Photogramm. Remote Sens. Spatial Inf. Sci., XL-7/W3, 409–415,
https://doi.org/10.5194/isprsarchives-XL-7-W3-409-2015, 2015b.
Helle, J.: Lentolaserkeilaus ja hemisfäärikuvaus
metsikkösadannan tutkimisessa Taitavuorilla Keniassa, B.Sc. thesis,
University of Helsinki, 2016.
Ilyama, M., Neufeldt, H., Dobie, P., Njenga, M., Ndegwa, G., and Jamnadass,
R.: The potential of agroforestry in the provision of sustainable woodfuel
in sub-Saharan Africa, Curr. Opin. Environ. Sustain., 6, 138–147,
https://doi.org/10.1016/j.cosust.2013.12.003, 2014
IPCC: Global Warming of 1.5 ∘C, An IPCC Special Report on the impacts of global warming of 1.5 ∘C above pre-industrial levels and related global greenhouse gas emission pathways, in the context of strengthening the global response to the threat of climate change, sustainable development, and efforts to eradicate poverty, Cambridge University Press, Cambridge, UK and New York, NY, USA, 616 pp., https://doi.org/10.1017/9781009157940, 2018.
Jiménez-Muñoz, J. C. and Sobrino, J. A.: A generalized
single-channel method for retrieving land surface temperature from remote
sensing data, J. Geophys. Res., 108, 4688,
https://doi.org/10.1029/2003JD003480, 2003.
Jiménez-Muñoz, J. C., Sobrino, J. A., Skoković, D., Mattra, C.,
and Cristóbal, J.: Land Surface Temperature Retrieval Methods from
Landsat-8 Thermal Infrared Sensor Data, IEEE Geosci. Remote S., 11,
1840–1843, https://doi.org/10.1109/LGRS.2014.2312032, 2014.
Jin, M. and Dickinson, R. E.: Land surface skin temperature climatology:
benefitting from the strengths of satellite observations, Environ. Res.
Lett., 5, 044004, https://doi.org/10.1088/1748-9326/5/4/044004, 2010.
Jucker, T., Hardwick, S. R., Both, S., Elias, D. M. O., Ewers, R. M., Milodowski, D. T., Swinfield, T., and Coomes, D. A.: Canopy structure and topography
jointly constrain the microclimate of human-modified tropical landscapes,
Glob. Change Biol., 24, 5243–5258, https://doi.org/10.1111/gcb.14415,
2018.
Kim, J.-P.: Variation in the accuracy of thermal remote sensing, Int. J.
Remote Sens., 34, 729–750, https://doi.org/10.1080/01431161.2012.713143,
2013.
Korhonen, L., Korhonen, K. T., Rautiainen, M., and Stenberg, P.: Estimation
of Forest Canopy Cover: A Comparison of Field Measurement Techniques, Silva
Fenn., 40, 577–588, https://doi.org/10.14214/sf.315, 2006.
Kuyah, S., Whitney, C. W., Jonsson, M., Sileshi, G. W., Öborn, I.,
Muthuri, C. W., and Luedeling, E.: Agroforestry delivers a win-win
solution for ecosystem services in sub-Saharan Africa. A meta-analysis,
Agron Sustain Dev, 39, https://doi.org/10.1007/s13593-019-0589-8, 2019.
Lee, X., Goulden, M. L., Hollinger, D. Y., Barr, A., Black, T. A., Bohrer, G., Bracho, R., Drake, B., Goldstein, A., Gu, L., Katul, G., Kolb, T., Law, B. E., Margolis, H., Meyers, T., Monson, R., Munger, W., Oren, R., Paw U, K. T., Richardson, A. D., Schmid, H. P., Staebler, R., Wofsy, S., and Zhao, L.: Observed increase in local cooling effect of
deforestation at higher latitudes, Nature, 479, 384–387,
https://doi.org/10.1038/nature10588, 2011.
Li, Y., Zhao, M., Motesharrei, S., Mu, Q., Kalnay, E., and Li, S.: Local
cooling and warming effects of forests based on satellite observations,
Nat. Commun., 6, 6603, https://doi.org/10.1038/ncomms7603, 2015.
Li, Y., De Noblet-Ducoudré, N., Davin, E. L., Motesharrei, S., Zeng, N.,
Li, S., and Kalnay, E.: The role of spatial scale and background climate in
the latitudinal temperature response to deforestation, Earth Syst. Dynam.,
7, 167–181, https://doi.org/10.5194/esd-7-167-2016, 2016.
Li, Z-L., Tang, B-H., Wu, H., Ren, H., Yan, G., Wan, Z., Trigo, I. F., and Sobrino, J. A.: Satellite-derived land surface temperature: Current status and
perspectives, Remote Sens. Environ., 131, 14–37,
https://doi.org/10.1016/j.rse.2012.12.008, 2013.
Luyssaert, S., Jammet, M., Stoy, P. C., Estel, S., Pongratz, J., Ceschia, E., Churkina, G., Don, A., Erb, K.-H., Ferlicoq, M., Gielen, B., Grünwald, T., Houghton, R. A., Klumpp, K., Knohl, A., Kolb, T., Kuemmerle, T., Laurila, T., Lohila, A., Loustau, D., McGrath, M. J., Meyfroidt, P., Moors, E. J., Naudts, K., Novick, K., Otto, J., Pilegaard, K., Pio, C. A., Rambal, S., Rebmann, C., Ryder, J., Suyker, A. E., Varlagin, A., Wattenbach, M., and Dolman, A. J.: Land management and land-cover change have impacts
of similar magnitude on surface temperature, Nat. Clim. Change, 4, 389–393,
https://doi.org/10.1038/nclimate2196, 2014.
Mace, G. M., Norris, K., and Fitter, A. H.: Biodiversity and ecosystem
services: a multilayered relationship, Trends Ecol. Evol., 27, 19–26,
https://doi.org/10.1016/j.tree.2011.08.006, 2012.
Maclean, Duffy, J. P., Haesen, S., Govaert, S., De Frenne, P., Vanneste, T.,
Lenoir, J., Lembrechts, J. J., Rhodes, M. W., and Van Meerbeek, K.: On the
measurement of microclimate, Methods Ecol. Evol., 12, 1397–1410,
https://doi.org/10.1111/2041-210X.13627, 2021.
Maeda, E. E. and Hurskainen, P.: Spatiotemporal characterization of land
surface temperature in Mount Kilimanjaro using satellite data, Theor. Appl.
Climatol., 118, 497–509, https://doi.org/10.1007/s00704-013-1082-y, 2014.
Maeda, E. E., Clark, B. J., Pellikka, P., and Siljander, M.: Modelling
agricultural expansion in Kenya's Eastern Arc Mountains biodiversity
hotspot, Agr. Syst., 103, 609–620,
https://doi.org/10.1007/s00704-013-1082-y, 2010.
Makumba, W., Janssen, B., Oenema, O., Akinnifesi, F. K., Mweta, D., and Kwesiga, F.: The long-term effects of a gliricidia–maize intercropping system in Southern Malawi, on gliricidia and maize yields, and soil properties, Agric. Ecosyst. Environ., 116, 85–92, https://doi.org/10.1016/j.agee.2006.03.012, 2006.
Martínez Pastur, G., Perera, A. H., Peterson, U., and Iverson, L. R.:
Ecosystem Services from Forest Landscapes: An Overview, in: Ecosystem
Services from Forest Landscape, edited by: Perera, A., Peterson, U., Pastur,
G., and Iverson, L., Springer, https://doi.org/10.1007/978-3-319-74515-2, 2018.
Mendenhall, C. D., Shields-Estrada, A., Krishnaswami, A. J., and Daily, G.
C.: Quantifying and sustaining biodiversity in tropical agricultural
landscapes, P. Natl. Acad. Sci. USA, 113, 14544–14551,
https://doi-org/10.1073/pnas.1604981113, 2016.
Mildrexler, D. J., Zhao, M., and Running, S. W.: A global comparison between
station air temperatures and MODIS land surface temperatures reveals the
cooling role of forests, J. Geophys. Res., 116,
G03025,
https://doi.org/10.1029/2010JG001486, 2011.
MoALF: Climate Risk Profile for Taita Taveta, Kenya County Climate Risk
Profile Series, The Kenya Ministry of Agriculture, Livestock and Fisheries
(MoALF), Nairobi, 2016.
Muimba-Kankolongo, A.: Food Crop Production by Smallholder Farmers in
Southern Africa, Academic Press, 382 pp., ISBN 978-0-12-814383-4, 2018.
Mwalusepo, S., Massawe, E. S., Affognon, H., Okuku, G. O., Kingori, S., Mburu, P. D. M., Ong'amo, G. O., Muchugu, E., Calatayud, P-A., Landmann, T., Muli, E., Raina, S. K., Johansson, T., and Le Ru, B. P.: Smallholder Farmers' Perspectives on
Climatic Variability and Adaptation Strategies in East Africa: The Case of
Mount Kilimanjaro in Tanzania, Taita and Machakos Hills in Kenya, J. Earth
Sci. Clim. Change, 6, 313, https://doi.org/10.4172/2157-7617.1000313, 2015.
Ndossi, M. I. and Avdan, U.: Application of Open Source Coding Technologies
in the Production of Land Surface Temperature (LST) Maps from Landsat: A
PyQGIS Plugin, Remote Sens., 8, 413, https://doi.org/10.3390/rs8050413,
2016.
Nemani, R., Pierce, L., and Running, S.: Developing Satellite-derived
Estimates of Surface Moisture Status, J. Appl. Meteorol., 32, 548–557,
1993.
Nemani, R. R. and Running, S. W.: Land cover characterization using
multitemporal red, near-IR, and thermal-IR data from NOAA/AVHRR, Ecol.
Appl., 7, 79–90, 1997.
Nobis, M. and Hunziker, U.: Automatic thresholding for hemispherical
canopy-photographs based on edge detection, Agr. Forest Meteorol., 128,
243–250, https://doi.org/10.1016/j.agrformet.2004.10.002, 2005.
Nyamadzawo, G., Nyamugafata, P., Chikowo, R., and Giller, K. E.: Partitioning of
simulated rainfall in a kaolinitic soil under improved fallow-maize rotation
in Zimbabwe, Agrofor. Syst., 59, 207–214,
https://doi.org/10.1023/B:AGFO.0000005221.67367.fd, 2003.
Nyamadzawo, G., Chikowo, R., Nyamugafata, P., and Giller, K. E.: Improved legume
tree fallows and tillage effects on structural stability and infiltration
rates of a kaolinitic sandy soil from central Zimbabwe, Soil Till. Res.,
96, 182–194, https://doi.org/10.1016/j.still.2007.06.008, 2007.
Nyamadzawo, G., Nyamugafata, P., Wuta, M., and Nyamangara, J.: Maize yields under
coppicing and non coppicing fallows in a fallow-maize rotation system in
central Zimbabwe, Agrofor. Syst., 84, 273–286,
https://doi.org/10.1007/s10457-011-9453-9, 2012.
Ong, C. K., Black, C. R., and Muthuri, C. W.: Modifying forestry and
agroforestry to increase water productivity, CAB Reviews: Perspectives in
Agriculture, Veterinary Science, Nutr. Nat. Resour., 1, 65,
https://doi.org/10.1079/PAVSNNR20061065, 2006.
Paletto, A. and Tosi, V.: Forest canopy cover and canopy closure:
comparison of assessment techniques, Eur. J. Forest Res., 128, 265–272,
https://doi.org/10.1007/s10342-009-0262-x, 2009.
Pellikka, P. and Hakala, E.: Climate change, in: Megatrends in Africa,
edited by: Vastapuu, I., Mattlin, M., Hakala, E., and Pellikka, P., 7–14,
Ministry of Foreign Affairs of Finland, ISBN 978-952-281-641-2, 2019.
Pellikka, P., Seed, E. D., and King, D. J.: Modelling Deciduous Forest Ice
Storm Damage Using Aerial CIR Imagery and Hemispheric Photography, Can. J.
Remote Sens., 26, 394–405, https://doi.org/10.1080/07038992.2000.10855271,
2000.
Pellikka, P. K., Lötjönen, M., Siljander, M., and Lens, L.: Airborne
remote sensing of spatiotemporal change (1955–2004) in indigenous and
exotic forest cover in the Taita Hills, Kenya, Int. J. Appl. Earth Obs., 11,
221–232, https://doi.org/10.1016/j.jag.2009.02.002, 2009.
Pellikka, P. K. E., Clark, B. J. F., Gosa, A. G., Himberg, N., Hurskainen, P., Maeda, E., Mwang'ombe, J., Omoro, L. M. A., and Siljander, M.: Agricultural Expansion and Its Consequences
in the Taita Hills, Kenya, in: Developments in Earth Surface Processes, Vol.
16, edited by: Paron, P., Olago, D., and Omuto, C. T., Elsevier, Amsterdam,
165–179, ISBN 978-0-444-59559-1, 2013.
Pellikka, P. K., Heikinheimo, V., Hietanen, J., Schäfer, E., Siljander,
M., and Heiskanen, J.: Impact of land cover change on aboveground carbon
stocks in Afromontane landscape in Kenya, Appl. Geogr., 94, 178–189,
https://doi.org/10.1016/j.apgeog.2018.03.017, 2018.
Potter, K. A., Woods, H. A., and Pincebourde, S.: Microclimatic challenges
in global change biology, Glob. Change Biol., 19,
2932–2939, https://doi.org/10.1111/gcb.12257, 2013.
Prata, A. J., Caselles, V., Coll, C., Sobrino, A., and Ottlé, C.:
Thermal Remote Sensing of Land Surface Temperature from Satellites: Current
Status and Future Prospects, Remote Sens. Rev., 12, 175–224,
https://doi.org/10.1080/02757259509532285, 1995.
R Core Team: RStudio: Integrated Development for R, RStudio, PBC, Boston,
United States, http://www.rstudio.com/, last access: 30 November 2019.
Räsänen, M., Chung, M., Katurji, M., Pellikka, P., Rinne, J., and
Katul, G. G.: Similarity in Fog and Rainfall Intermittency, Geophys. Res.
Lett., 45, 10691–10699, 2018.
Rhoades, C.: Seasonal pattern of nitrogen mineralization and soil moisture
beneath Faidherbia albida (syn Acacia albida) in central Malawi, Agrofor.
Syst., 29, 133–145, 1995.
Ridler, T. W. and Calvard, S.: Picture Thresholding Using an Iterative
Selection Method, IEEE T. Syst. Man Cyb., 8, 630–632, 1978.
Schleppi, P., Conedera, M., Sedivy, I., and Thimonier, A.: Correcting
non-linearity and slope effects in the estimation of the leaf area index of
forests from hemispherical photographs, Agr. Forest Meteorol., 144,
236–242, https://doi.org/10.1016/j.agrformet.2007.02.004, 2007.
Simó, G., Martínez-Villagrasa, D., Jiménez, M. A., and Cuxart,
J.: Impact of the Surface–Atmosphere Variables on the Relation between Air
and Land Surface Temperatures, Pure Appl. Geophys., 175, 3939–3953,
https://doi.org/10.1007/s00024-018-1930-x, 2018.
Siriri, D., Wilson, J., Coe, R., Tenywa, M. M., Bekunda, M. A., Ong, C. K.
and Black, C. R.: Trees improve water storage and reduce soil evaporation in
agroforestry systems on bench terraces in SW Uganda, Agrofor. Syst., 87,
45–58, https://doi.org/10.1007/s10457-012-9520-x, 2013.
Skole, D. L.., Mbow, C., Mugabowindekwe, M., Brandt, M. S., and Samek, J.
H.: Trees outside forests as natural climate solutions, Nat. Clim. Change,
11, 1013–1016, https://doi.org/10.1038/s41558-021-01230-3, 2021.
Thijs, K. W., Aerts, R., van der Moortele, P., Aben, J., Musila, W.,
Pellikka, P., Gulinck, H., and Muys, B.: Trees in a human-modified tropical
landscape: Species and trait composition and potential ecosystem services,
Landscape Urban Plan., 144, 49–58,
https://doi.org/10.1016/j.landurbplan.2015.07.015, 2015.
Thimonier, A., Sedivy, I., and Schleppi, P.: Estimating leaf area index in
different types of mature forest stands in Switzerland: a comparison of
methods, Eur. J. Forest Res., 129, 543562,
https://doi.org/10.1007/s10342-009-0353-8, 2010.
Tuure, J., Korpela, A., Hautala, M., Hakojärvi, M., Mikkola, H.,
Räsänen, M., Duplissy, J., Pellikka, P., Kulmala, M.,
Petäjä, T., and Alakukku, L.: Comparison of surface foil materials
and dew collectors location in an arid area: a one-year experiment in Kenya,
Agr. Forest Meteorol. 276–277, 107613,
https://doi.org/10.1016/j.agrformet.2019.06.012, 2019.
Unruh, J. D., Houghton, R. A., and Lefebvre, P. A.: Carbon storage in
agroforestry: an estimate for sub-Saharan Africa, Clim. Res., 3, 39–52,
1993.
USGS: Landsat 8 OLI and TIRS Calibration Notices:
https://www.usgs.gov/land-resources/nli/landsat/landsat-8-oli-and-tirs-calibration-notices
(last access: 17 February 2020), 2017.
Wachiye, S., Merbold, L., Vesala, T., Rinne, J., Räsänen, M.,
Leitner, S., and Pellikka, P.: Soil greenhouse gas emissions under different
land-use types in savanna ecosystems of Kenya, Biogeosciences, 17,
2149–2167, https://doi.org/10.5194/bg-17-2149-2020, 2020.
Wanderley, R. L., Dominigues, L. M., Joly, C. A., and da Rocha, H. R.:
Relationship between land surface temperature and fraction of anthropized
area in the Atlantic forest region, Brazil, PLoS One, 14, e0225443,
https://doi.org/10.1371/journal.pone.0225443, 2019.
Wang, L., Lu, Y., and Yao, Y.: Comparison of Three Algorithms for the
Retrieval of Land Surface Temperature from Landsat 8 Images, Sensors, 19,
5049, https://doi.org/10.3390/s19225049, 2019.
Wild, J., Kopecký, M., Maeck, M., Sanda, M., Jankovec, J., and Haase,
T.: Climate at ecologically relevant scales: A new temperature and soil
moisture logger for long-term microclimate measurement, Agr. Forest
Meteorol., 268, 40–47, https://doi.org/10.1016/j.agrformet.2018.12.018,
2019.
Zellweger, F., De Frenne, P., Lenoir, J., Rocchini, D., and Coomes, D.:
Advances in Microclimate Ecology Arising from Remote Sensing, Trends Ecol.
Evol., 34, 327–341, https://doi.org/10.1016/j.tree.2018.12.012, 2019.
Zellweger, F., De Frenne, P., Lenoir, J., Vangansbeke, P., Verheyen, K., Bernhardt-Römermann, M., Baeten, L., Hédl, R., Berki, I., Brunet, J., Van Calster, H., Chudomelová, M., Decocq, G., Dirnböck, T., Durak, T., Heinken, T., Jaroszewicz, B., Kopecký, M., Máliš, F., Macek, M., Marek, M., Naaf, T., Nagel, T. A., Ortmann-Ajkai, A., Petřík, P., Pielech, R., Reczyńska, K., Schmidt, W., Standovár, T., Świerkosz, K., Teleki, B., Vild, O., Wulf, M., and Coomes, D.: Forest microclimate dynamics
drive plant responses to warming, Science, 368, 772–775,
https://doi.org/10.1126/science.aba6880, 2020.
Zeng, Z., Wang, D., Yang, L., Wu, J., Ziegler, A. D., Liu, M., Ciais, P., Searchinger, T. D., Yang, Z-L., Chen, D., Chen, A., Li, L. Z. X., Piao, S., Taylor, D., Cai, X., Pan, M., Peng, L., Lin, P., Gower, D., Feng, Y., Zheng, C., Guan, K., Lian, X., Wang, T., Wang, L., Jeong, S-J., Wei, Z., Sheffield, J., Caylor, K., and Wood, E. F.: Deforestation-induced warming over tropical mountain regions regulated by elevation, Nat. Geosci., 14, 23–29, https://doi.org/10.1038/s41561-020-00666-0, 2021.
Zomer, R. J., Trabucco, A., Coe, R., Place, F., van Noordwijk, M., and Xu,
J. C.: Trees on farms: an update and reanalysis of agroforestry's global
extent and socio-ecological characteristics. Working Paper 179, World
Agroforestry Centre (ICRAF) Southeast Asia Regional Program, Bogor,
Indonesia, https://doi.org/10.5716/WP14064.pdf, 2014.
Zschauer K.: Households energy supply and the use of fuelwood in the Taita
Hills, Kenya, MSc thesis, Department of Geosciences and Geography,
University of Helsinki, Finland, 101 pp.,
http://urn.fi/URN:NBN:fi-fe201201311271 (last access: 20 June 2022), 2012.
Short summary
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.
Tree canopies are strong moderators of understory climatic conditions. In tropical areas, trees...
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