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Guo Y, Song J, Feng J, Wang H, Zhang J, Ru J, Wang X, Han X, Ma H, Lyu Y, Ma W, Wang C, Qiu X, Wan S. Nighttime warming and nitrogen addition effects on the microclimate of a freshwater wetland dominated by Phragmites australis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 924:171573. [PMID: 38462005 DOI: 10.1016/j.scitotenv.2024.171573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 03/06/2024] [Accepted: 03/06/2024] [Indexed: 03/12/2024]
Abstract
The critical impacts of microclimate on carbon (C) cycling have been widely reported. However, the potential effects of global change on wetland microclimate remain unclear, primarily because of the absence of field manipulative experiment in inundated wetland. This study was designed to examine the effects of nighttime warming and nitrogen (N) addition on air, water, and sediment temperature and also reveal the controlling factors in a Phragmites australis dominated freshwater wetland on the North China Plain. Nighttime warming increased daily air, water, and sediment temperature by 0.24 °C, 0.27 °C, and 0.36 °C, respectively. The diurnal temperature range of water was decreased by 0.44 °C under nighttime warming, whereas warming had no effect on diurnal temperature range of air and sediment. In addition, N addition caused a reduction of 0.20 °C and 0.14 °C in daily water and sediment temperature by increasing vegetation coverage. There was a significant interaction between nighttime warming and N addition on water temperature. Furthermore, the vapor pressure deficit is the main factor affecting the extent of the warming-induced increases in air temperature. The changes of height and leaf area index of Phragmites australis are responsible for the cooling effects in the N addition plots. This study provides empirical evidence for the positive climate warming - microclimate feedback in freshwater wetland. However, N deposition leads to decreased water and sediment temperature. Our findings highlight the importance of incorporating the differential impacts of nighttime warming and N addition on air, water, and sediment temperature into the predictions of wetland C cycling responses to climate change.
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Affiliation(s)
- Yunpeng Guo
- School of Life Sciences/Hebei Basic Science Center for Biotic Interaction, Institute of Life Science and Green Development, Hebei University, Baoding 071002, PR China
| | - Jian Song
- School of Life Sciences/Hebei Basic Science Center for Biotic Interaction, Institute of Life Science and Green Development, Hebei University, Baoding 071002, PR China
| | - Jiayin Feng
- School of Life Sciences/Hebei Basic Science Center for Biotic Interaction, Institute of Life Science and Green Development, Hebei University, Baoding 071002, PR China
| | - Hongpeng Wang
- School of Life Sciences/Hebei Basic Science Center for Biotic Interaction, Institute of Life Science and Green Development, Hebei University, Baoding 071002, PR China
| | - Jinhua Zhang
- School of Life Sciences/Hebei Basic Science Center for Biotic Interaction, Institute of Life Science and Green Development, Hebei University, Baoding 071002, PR China
| | - Jingyi Ru
- School of Life Sciences/Hebei Basic Science Center for Biotic Interaction, Institute of Life Science and Green Development, Hebei University, Baoding 071002, PR China
| | - Xiaopan Wang
- School of Life Sciences/Hebei Basic Science Center for Biotic Interaction, Institute of Life Science and Green Development, Hebei University, Baoding 071002, PR China
| | - Xu Han
- School of Life Sciences/Hebei Basic Science Center for Biotic Interaction, Institute of Life Science and Green Development, Hebei University, Baoding 071002, PR China
| | - Huixia Ma
- School of Life Sciences/Hebei Basic Science Center for Biotic Interaction, Institute of Life Science and Green Development, Hebei University, Baoding 071002, PR China
| | - Yaru Lyu
- School of Life Sciences/Hebei Basic Science Center for Biotic Interaction, Institute of Life Science and Green Development, Hebei University, Baoding 071002, PR China
| | - Wenjing Ma
- School of Life Sciences/Hebei Basic Science Center for Biotic Interaction, Institute of Life Science and Green Development, Hebei University, Baoding 071002, PR China
| | - Chao Wang
- School of Life Sciences/Hebei Basic Science Center for Biotic Interaction, Institute of Life Science and Green Development, Hebei University, Baoding 071002, PR China
| | - Xueli Qiu
- School of Life Sciences/Hebei Basic Science Center for Biotic Interaction, Institute of Life Science and Green Development, Hebei University, Baoding 071002, PR China
| | - Shiqiang Wan
- School of Life Sciences/Hebei Basic Science Center for Biotic Interaction, Institute of Life Science and Green Development, Hebei University, Baoding 071002, PR China.
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2
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Chelli S, Bricca A, Tsakalos JL, Andreetta A, Bonari G, Campetella G, Carnicelli S, Cervellini M, Puletti N, Wellstein C, Canullo R. Multiple drivers of functional diversity in temperate forest understories: Climate, soil, and forest structure effects. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 916:170258. [PMID: 38246378 DOI: 10.1016/j.scitotenv.2024.170258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 01/16/2024] [Accepted: 01/16/2024] [Indexed: 01/23/2024]
Abstract
In macroecology, shifting from coarse- to local-scale explanatory factors is crucial for understanding how global change impacts functional diversity (FD). Plants possess diverse traits allowing them to differentially respond across a spectrum of environmental conditions. We aim to assess how macro- to microclimate, stand-scale measured soil properties, forest structure, and management type, influence forest understorey FD at the macroecological scale. Our study covers Italian forests, using thirteen predictors categorized into climate, soil, forest structure, and management. We analyzed five traits (i.e., specific leaf area, plant size, seed mass, belowground bud bank size, and clonal lateral spread) capturing independent functional dimensions to calculate the standardized effect size of functional diversity (SES-FD) for all traits (multi-trait) and for single traits. Multiple regression models were applied to assess the effect of predictors on SES-FD. We revealed that climate, soil, and forest structure significantly drive SES-FD of specific leaf area, plant size, seed mass, and bud bank. Forest management had a limited effect. However, differences emerged between herbaceous and woody growth forms of the understorey layer, with herbaceous species mainly responding to climate and soil features, while woody species were mainly affected by forest structure. Future warmer and more seasonal climate could reduce the diversity of resource economics, plant size, and persistence strategies of the forest understorey. Soil eutrophication and acidification may impact the diversity of regeneration strategies; canopy closure affects the diversity of above- and belowground traits, with a larger effect on woody species. Multifunctional approaches are vital to disentangle the effect of global changes on functional diversity since independent functional specialization axes are modulated by different drivers.
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Affiliation(s)
- Stefano Chelli
- School of Biosciences and Veterinary Medicine, Plant Diversity and Ecosystems Management Unit, University of Camerino, Camerino, Italy; Centro Interuniversitario per le Biodiversità Vegetale Big Data - PLANT DATA, Department of Biological, Geological and Environmental Sciences, Alma Mater Studiorum, University of Bologna, Bologna, Italy.
| | - Alessandro Bricca
- Faculty of Agricultural, Environmental and Food Sciences, Free University of Bozen-Bolzano, Bolzano, Italy
| | - James L Tsakalos
- School of Biosciences and Veterinary Medicine, Plant Diversity and Ecosystems Management Unit, University of Camerino, Camerino, Italy; Harry Butler Institute, Murdoch University, Murdoch, Perth, WA, Australia
| | - Anna Andreetta
- Department of Chemical and Geological Sciences, University of Cagliari, Italy
| | | | - Giandiego Campetella
- School of Biosciences and Veterinary Medicine, Plant Diversity and Ecosystems Management Unit, University of Camerino, Camerino, Italy; Centro Interuniversitario per le Biodiversità Vegetale Big Data - PLANT DATA, Department of Biological, Geological and Environmental Sciences, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | | | - Marco Cervellini
- School of Biosciences and Veterinary Medicine, Plant Diversity and Ecosystems Management Unit, University of Camerino, Camerino, Italy
| | - Nicola Puletti
- CREA, Research Centre for Forestry and Wood, Arezzo, Italy
| | - Camilla Wellstein
- Faculty of Agricultural, Environmental and Food Sciences, Free University of Bozen-Bolzano, Bolzano, Italy
| | - Roberto Canullo
- School of Biosciences and Veterinary Medicine, Plant Diversity and Ecosystems Management Unit, University of Camerino, Camerino, Italy; Centro Interuniversitario per le Biodiversità Vegetale Big Data - PLANT DATA, Department of Biological, Geological and Environmental Sciences, Alma Mater Studiorum, University of Bologna, Bologna, Italy
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3
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Lorer E, Verheyen K, Blondeel H, De Pauw K, Sanczuk P, De Frenne P, Landuyt D. Forest understorey flowering phenology responses to experimental warming and illumination. THE NEW PHYTOLOGIST 2024; 241:1476-1491. [PMID: 38031641 DOI: 10.1111/nph.19425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 11/06/2023] [Indexed: 12/01/2023]
Abstract
Species are altering their phenology to track warming temperatures. In forests, understorey plants experience tree canopy shading resulting in light and temperature conditions, which strongly deviate from open habitats. Yet, little is known about understorey phenology responses to forest microclimates. We recorded flowering onset, peak, end and duration of 10 temperate forest understorey plant species in two mesocosm experiments to understand how phenology is affected by sub-canopy warming and how this response is modulated by illumination, which is related to canopy change. Furthermore, we investigated whether phenological sensitivities can be explained by species' characteristics, such as thermal niche. We found a mean advance of flowering onset of 7.1 d per 1°C warming, more than previously reported in studies not accounting for microclimatic buffering. Warm-adapted species exhibited greater advances. Temperature sensitivity did not differ between early- and later-flowering species. Experimental illumination did not significantly affect species' phenological temperature sensitivities, but slightly delayed flowering phenology independent from warming. Our study suggests that integrating sub-canopy temperature and light availability will help us better understand future understorey phenology responses. Climate warming together with intensifying canopy disturbances will continue to drive phenological shifts and potentially disrupt understorey communities, thereby affecting forest biodiversity and functioning.
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Affiliation(s)
- Eline Lorer
- Forest & Nature Lab, Department of Environment, Ghent University, Geraardsbergsesteenweg 267, BE-9090, Melle-Gontrode, Belgium
| | - Kris Verheyen
- Forest & Nature Lab, Department of Environment, Ghent University, Geraardsbergsesteenweg 267, BE-9090, Melle-Gontrode, Belgium
| | - Haben Blondeel
- Forest & Nature Lab, Department of Environment, Ghent University, Geraardsbergsesteenweg 267, BE-9090, Melle-Gontrode, Belgium
| | - Karen De Pauw
- Forest & Nature Lab, Department of Environment, Ghent University, Geraardsbergsesteenweg 267, BE-9090, Melle-Gontrode, Belgium
| | - Pieter Sanczuk
- Forest & Nature Lab, Department of Environment, Ghent University, Geraardsbergsesteenweg 267, BE-9090, Melle-Gontrode, Belgium
| | - Pieter De Frenne
- Forest & Nature Lab, Department of Environment, Ghent University, Geraardsbergsesteenweg 267, BE-9090, Melle-Gontrode, Belgium
| | - Dries Landuyt
- Forest & Nature Lab, Department of Environment, Ghent University, Geraardsbergsesteenweg 267, BE-9090, Melle-Gontrode, Belgium
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4
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Wei L, Sanczuk P, De Pauw K, Caron MM, Selvi F, Hedwall PO, Brunet J, Cousins SAO, Plue J, Spicher F, Gasperini C, Iacopetti G, Orczewska A, Uria-Diez J, Lenoir J, Vangansbeke P, De Frenne P. Using warming tolerances to predict understory plant responses to climate change. GLOBAL CHANGE BIOLOGY 2024; 30:e17064. [PMID: 38273565 DOI: 10.1111/gcb.17064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 10/27/2023] [Accepted: 11/06/2023] [Indexed: 01/27/2024]
Abstract
Climate change is pushing species towards and potentially beyond their critical thermal limits. The extent to which species can cope with temperatures exceeding their critical thermal limits is still uncertain. To better assess species' responses to warming, we compute the warming tolerance (ΔTniche ) as a thermal vulnerability index, using species' upper thermal limits (the temperature at the warm limit of their distribution range) minus the local habitat temperature actually experienced at a given location. This metric is useful to predict how much more warming species can tolerate before negative impacts are expected to occur. Here we set up a cross-continental transplant experiment involving five regions distributed along a latitudinal gradient across Europe (43° N-61° N). Transplant sites were located in dense and open forests stands, and at forest edges and in interiors. We estimated the warming tolerance for 12 understory plant species common in European temperate forests. During 3 years, we examined the effects of the warming tolerance of each species across all transplanted locations on local plant performance, in terms of survival, height, ground cover, flowering probabilities and flower number. We found that the warming tolerance (ΔTniche ) of the 12 studied understory species was significantly different across Europe and varied by up to 8°C. In general, ΔTniche were smaller (less positive) towards the forest edge and in open stands. Plant performance (growth and reproduction) increased with increasing ΔTniche across all 12 species. Our study demonstrated that ΔTniche of understory plant species varied with macroclimatic differences among regions across Europe, as well as in response to forest microclimates, albeit to a lesser extent. Our findings support the hypothesis that plant performance across species decreases in terms of growth and reproduction as local temperature conditions reach or exceed the warm limit of the focal species.
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Affiliation(s)
- Liping Wei
- CAS Engineering Laboratory for Vegetation Ecosystem Restoration on Islands and Coastal Zones, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
- Forest & Nature Lab, Department of Environment, Faculty of Bioscience Engineering, Ghent University, Melle-Gontrode, Belgium
| | - Pieter Sanczuk
- Forest & Nature Lab, Department of Environment, Faculty of Bioscience Engineering, Ghent University, Melle-Gontrode, Belgium
| | - Karen De Pauw
- Forest & Nature Lab, Department of Environment, Faculty of Bioscience Engineering, Ghent University, Melle-Gontrode, Belgium
| | - Maria Mercedes Caron
- Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto Multidisciplinario de Biología Vegetal (IMBIV), CONICET, Córdoba, Argentina
- European Forest Institute-Mediterranean Facility, Barcelona, Spain
| | - Federico Selvi
- Department of Agriculture, Food, Environment and Forestry, University of Florence, Florence, Italy
| | - Per-Ola Hedwall
- Southern Swedish Forest Research Centre, Swedish University of Agricultural Sciences, Lomma, Sweden
| | - Jörg Brunet
- Southern Swedish Forest Research Centre, Swedish University of Agricultural Sciences, Lomma, Sweden
| | - Sara A O Cousins
- Landscapes, Environment and Geomatics, Department of Physical Geography, Stockholm University, Stockholm, Sweden
| | - Jan Plue
- Department of Urban and Rural Development, SLU Swedish Biodiversity Centre (CBM), Institutionen för stad och land, Uppsala, Sweden
| | - Fabien Spicher
- UMR CNRS 7058 Ecologie et Dynamique des Systèmes Anthropisés (EDYSAN), Université de Picardie Jules Verne, Amiens, France
| | - Cristina Gasperini
- Department of Agriculture, Food, Environment and Forestry, University of Florence, Florence, Italy
| | - Giovanni Iacopetti
- Department of Agriculture, Food, Environment and Forestry, University of Florence, Florence, Italy
| | - Anna Orczewska
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia, Katowice, Poland
| | - Jaime Uria-Diez
- Department of Forest Sciences, NEIKER-Basque Institute for Agricultural Research and Development, Basque Research and Technology Alliance (BRTA), Derio, Spain
| | - Jonathan Lenoir
- UMR CNRS 7058 Ecologie et Dynamique des Systèmes Anthropisés (EDYSAN), Université de Picardie Jules Verne, Amiens, France
| | - Pieter Vangansbeke
- Forest & Nature Lab, Department of Environment, Faculty of Bioscience Engineering, Ghent University, Melle-Gontrode, Belgium
- Earth and Life Institute, Université Catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Pieter De Frenne
- Forest & Nature Lab, Department of Environment, Faculty of Bioscience Engineering, Ghent University, Melle-Gontrode, Belgium
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5
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Landuyt D, Perring MP, Blondeel H, De Lombaerde E, Depauw L, Lorer E, Maes SL, Baeten L, Bergès L, Bernhardt-Römermann M, Brūmelis G, Brunet J, Chudomelová M, Czerepko J, Decocq G, den Ouden J, De Frenne P, Dirnböck T, Durak T, Fichtner A, Gawryś R, Härdtle W, Hédl R, Heinrichs S, Heinken T, Jaroszewicz B, Kirby K, Kopecký M, Máliš F, Macek M, Mitchell FJG, Naaf T, Petřík P, Reczyńska K, Schmidt W, Standovár T, Swierkosz K, Smart SM, Van Calster H, Vild O, Waller DM, Wulf M, Verheyen K. Combining multiple investigative approaches to unravel functional responses to global change in the understorey of temperate forests. GLOBAL CHANGE BIOLOGY 2024; 30:e17086. [PMID: 38273496 DOI: 10.1111/gcb.17086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 11/20/2023] [Accepted: 11/20/2023] [Indexed: 01/27/2024]
Abstract
Plant communities are being exposed to changing environmental conditions all around the globe, leading to alterations in plant diversity, community composition, and ecosystem functioning. For herbaceous understorey communities in temperate forests, responses to global change are postulated to be complex, due to the presence of a tree layer that modulates understorey responses to external pressures such as climate change and changes in atmospheric nitrogen deposition rates. Multiple investigative approaches have been put forward as tools to detect, quantify and predict understorey responses to these global-change drivers, including, among others, distributed resurvey studies and manipulative experiments. These investigative approaches are generally designed and reported upon in isolation, while integration across investigative approaches is rarely considered. In this study, we integrate three investigative approaches (two complementary resurvey approaches and one experimental approach) to investigate how climate warming and changes in nitrogen deposition affect the functional composition of the understorey and how functional responses in the understorey are modulated by canopy disturbance, that is, changes in overstorey canopy openness over time. Our resurvey data reveal that most changes in understorey functional characteristics represent responses to changes in canopy openness with shifts in macroclimate temperature and aerial nitrogen deposition playing secondary roles. Contrary to expectations, we found little evidence that these drivers interact. In addition, experimental findings deviated from the observational findings, suggesting that the forces driving understorey change at the regional scale differ from those driving change at the forest floor (i.e., the experimental treatments). Our study demonstrates that different approaches need to be integrated to acquire a full picture of how understorey communities respond to global change.
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Affiliation(s)
- Dries Landuyt
- Forest&Nature Lab, Department of Environment, Ghent University, Melle, Belgium
| | - Michael P Perring
- UK Centre for Ecology and Hydrology (UKCEH), Bangor, UK
- The UWA Institute of Agriculture, The University of Western Australia, Perth, Western Australia, Australia
| | - Haben Blondeel
- Forest&Nature Lab, Department of Environment, Ghent University, Melle, Belgium
| | - Emiel De Lombaerde
- Forest&Nature Lab, Department of Environment, Ghent University, Melle, Belgium
| | - Leen Depauw
- Forest&Nature Lab, Department of Environment, Ghent University, Melle, Belgium
| | - Eline Lorer
- Forest&Nature Lab, Department of Environment, Ghent University, Melle, Belgium
| | - Sybryn L Maes
- Division of Forest, Nature and Landscape, Department of Earth and Environmental Sciences, KU Leuven, Leuven, Belgium
| | - Lander Baeten
- Forest&Nature Lab, Department of Environment, Ghent University, Melle, Belgium
| | - Laurent Bergès
- Laboratoire ecosystèmes et sociétés en montagne (LESSEM), National Research Institute for Agriculture, Food and the Environment (INRAE), St-Martin d'Hères, France
| | - Markus Bernhardt-Römermann
- Institute of Ecology and Evolution, Friedrich Schiller University Jena, Jena, Germany
- German Centre for Integrative Biodiversity Research (iDiv), Leipzig, Germany
| | | | - Jörg Brunet
- Swedish University of Agricultural Sciences, Southern Swedish Forest Research Centre, Lomma, Sweden
| | | | | | | | - Jan den Ouden
- Forest Ecology and Forest Management Group, Wageningen University & Research, Wageningen, The Netherlands
| | - Pieter De Frenne
- Forest&Nature Lab, Department of Environment, Ghent University, Melle, Belgium
| | | | - Tomasz Durak
- Institute of Biology, University of Rzeszów, Rzeszów, Poland
| | - Andreas Fichtner
- Institute of Ecology, Leuphana University Lüneburg, Lüneburg, Germany
| | | | - Werner Härdtle
- Institute of Ecology, Leuphana University Lüneburg, Lüneburg, Germany
| | - Radim Hédl
- Institute of Botany, Czech Academy of Sciences, Brno, Czech Republic
- Department of Botany, Faculty of Science, Palacký University in Olomouc, Olomouc, Czech Republic
| | - Steffi Heinrichs
- Department Silviculture and Forest Ecology of the Temperate Zones, University of Göttingen, Göttingen, Germany
| | - Thilo Heinken
- General Botany, Institute for Biochemistry and Biology, University of Potsdam, Potsdam, Germany
| | - Bogdan Jaroszewicz
- Białowieża Geobotanical Station, Faculty of Biology, University of Warsaw, Białowieża, Poland
| | - Keith Kirby
- Department of Plant Sciences, University of Oxford, Oxford, UK
| | - Martin Kopecký
- Institute of Botany, Czech Academy of Sciences, Průhonice, Czech Republic
- Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic
| | | | - Martin Macek
- Institute of Botany, Czech Academy of Sciences, Průhonice, Czech Republic
| | - Fraser J G Mitchell
- Botany Department, School of Natural Sciences, Trinity College Dublin, Dublin, Ireland
| | - Tobias Naaf
- Leibniz Centre for Agricultural Landscape Research (ZALF), Müncheberg, Germany
| | - Petr Petřík
- Institute of Botany, Czech Academy of Sciences, Průhonice, Czech Republic
- Faculty of Environmental Sciences, Czech University of Life Sciences, Prague, Czech Republic
| | - Kamila Reczyńska
- Department of Botany, Faculty of Biological Sciences, University of Wrocław, Wrocław, Poland
| | - Wolfgang Schmidt
- Department Silviculture and Forest Ecology of the Temperate Zones, University of Göttingen, Göttingen, Germany
| | - Tibor Standovár
- Department of Plant Systematics, Ecology and Theoretical Biology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Krzysztof Swierkosz
- Museum of Natural History, Faculty of Biological Sciences, University of Wrocław, Wrocław, Poland
| | - Simon M Smart
- UK Centre for Ecology & Hydrology (UKCEH), Lancaster University, Bailrigg, UK
| | | | - Ondřej Vild
- Institute of Botany, Czech Academy of Sciences, Průhonice, Czech Republic
| | - Donald M Waller
- Department of Botany, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Monika Wulf
- Leibniz Centre for Agricultural Landscape Research (ZALF), Müncheberg, Germany
| | - Kris Verheyen
- Forest&Nature Lab, Department of Environment, Ghent University, Melle, Belgium
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6
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Christiansen DM, Römer G, Dahlgren JP, Borg M, Jones OR, Merinero S, Hylander K, Ehrlén J. High-resolution data are necessary to understand the effects of climate on plant population dynamics of a forest herb. Ecology 2024; 105:e4191. [PMID: 37878669 DOI: 10.1002/ecy.4191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 08/04/2023] [Accepted: 09/19/2023] [Indexed: 10/27/2023]
Abstract
Climate is assumed to strongly influence species distribution and abundance. Although the performance of many organisms is influenced by the climate in their immediate proximity, the climate data used to model their distributions often have a coarse spatial resolution. This is problematic because the local climate experienced by individuals might deviate substantially from the regional average. This problem is likely to be particularly important for sessile organisms like plants and in environments where small-scale variation in climate is large. To quantify the effect of local temperature on vital rates and population growth rates, we used temperature values measured at the local scale (in situ logger measures) and integral projection models with demographic data from 37 populations of the forest herb Lathyrus vernus across a wide latitudinal gradient in Sweden. To assess how the spatial resolution of temperature data influences assessments of climate effects, we compared effects from models using local data with models using regionally aggregated temperature data at several spatial resolutions (≥1 km). Using local temperature data, we found that spring frost reduced the asymptotic population growth rate in the first of two annual transitions and influenced survival in both transitions. Only one of the four regional estimates showed a similar negative effect of spring frost on population growth rate. Our results for a perennial forest herb show that analyses using regionally aggregated data often fail to identify the effects of climate on population dynamics. This emphasizes the importance of using organism-relevant estimates of climate when examining effects on individual performance and population dynamics, as well as when modeling species distributions. For sessile organisms that experience the environment over small spatial scales, this will require climate data at high spatial resolutions.
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Affiliation(s)
- Ditte M Christiansen
- Department of Ecology, Environment and Plant Sciences, Stockholm University, Stockholm, Sweden
- Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden
| | - Gesa Römer
- Interdisciplinary Centre on Population Dynamics (CPop), University of Southern Denmark, Odense M, Denmark
- Department of Biology, University of Southern Denmark, Odense M, Denmark
| | - Johan P Dahlgren
- Interdisciplinary Centre on Population Dynamics (CPop), University of Southern Denmark, Odense M, Denmark
- Department of Biology, University of Southern Denmark, Odense M, Denmark
| | - Malin Borg
- Department of Ecology, Environment and Plant Sciences, Stockholm University, Stockholm, Sweden
| | - Owen R Jones
- Interdisciplinary Centre on Population Dynamics (CPop), University of Southern Denmark, Odense M, Denmark
- Department of Biology, University of Southern Denmark, Odense M, Denmark
| | - Sonia Merinero
- Department of Ecology, Environment and Plant Sciences, Stockholm University, Stockholm, Sweden
- Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden
| | - Kristoffer Hylander
- Department of Ecology, Environment and Plant Sciences, Stockholm University, Stockholm, Sweden
- Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden
| | - Johan Ehrlén
- Department of Ecology, Environment and Plant Sciences, Stockholm University, Stockholm, Sweden
- Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden
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7
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Yan T, Wang L, Wang P, Zhong T. Stability in the leaf functional traits of understory herbaceous species after 12-yr of nitrogen addition in temperate larch plantations. FRONTIERS IN PLANT SCIENCE 2023; 14:1282884. [PMID: 38116147 PMCID: PMC10728480 DOI: 10.3389/fpls.2023.1282884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 11/20/2023] [Indexed: 12/21/2023]
Abstract
Leaf functional traits play critical roles in plant functioning. Although the functional traits of overstory trees have been extensively studied, minimal research has been conducted regarding understory species, despite the understory layer is an important component of temperate forests. Such insufficiency limit the broader understanding of processes and functions in forest ecosystems, particularly when under the increasing atmospheric nitrogen (N) deposition. Here, we investigated the responses of 18 leaf functional traits in six understory herbaceous species within young and mature stands (three species per stand) in larch (Larix principis-rupprechtii) plantations that subjected to 12 years of anthropogenic N addition. We found that N addition did not significantly impact the photosynthetic traits of understory herbaceous species in either stand; it only led to increased chlorophyll content in Geum aleppicum Jacq. Similarly, with the exception of decreases in the predawn leaf water potential of Sanguisorba officinalis L., N addition did not significantly affect leaf hydraulic traits. With the exception of changes to adaxial epidermis thickness in Potentilla chinensis Ser. (decreased) and G. aleppicum (increased), N addition had negligible effects on leaf anatomical traits and specific leaf area, however, interspecific variations in the plasticity of leaf anatomical traits were observed. Stable responses to N addition were also observed for nonstructural carbohydrates (NSC) and their components (soluble sugars and starch), with the exception of Polygonum divaricatum L., which exhibited increases in NSC. Overall, our results suggest that the functional traits of understory herbaceous species exhibit stability under conditions of long-term N enrichment in temperate plantations.
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Affiliation(s)
- Tao Yan
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
- Qingyuan Forest CERN, National Observation and Research Station, Shenyang, China
| | - Liying Wang
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Peilin Wang
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Tianyu Zhong
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
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8
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Torresani M, Rocchini D, Alberti A, Moudrý V, Heym M, Thouverai E, Kacic P, Tomelleri E. LiDAR GEDI derived tree canopy height heterogeneity reveals patterns of biodiversity in forest ecosystems. ECOL INFORM 2023; 76:102082. [PMID: 37662896 PMCID: PMC10316066 DOI: 10.1016/j.ecoinf.2023.102082] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/21/2023] [Accepted: 03/22/2023] [Indexed: 09/05/2023]
Abstract
The "Height Variation Hypothesis" is an indirect approach used to estimate forest biodiversity through remote sensing data, stating that greater tree height heterogeneity (HH) measured by CHM LiDAR data indicates higher forest structure complexity and tree species diversity. This approach has traditionally been analyzed using only airborne LiDAR data, which limits its application to the availability of the dedicated flight campaigns. In this study we analyzed the relationship between tree species diversity and HH, calculated with four different heterogeneity indices using two freely available CHMs derived from the new space-borne GEDI LiDAR data. The first, with a spatial resolution of 30 m, was produced through a regression tree machine learning algorithm integrating GEDI LiDAR data and Landsat optical information. The second, with a spatial resolution of 10 m, was created using Sentinel-2 images and a deep learning convolutional neural network. We tested this approach separately in 30 forest plots situated in the northern Italian Alps, in 100 plots in the forested area of Traunstein (Germany) and successively in all the 130 plots through a cross-validation analysis. Forest density information was also included as influencing factor in a multiple regression analysis. Our results show that the GEDI CHMs can be used to assess biodiversity patterns in forest ecosystems through the estimation of the HH that is correlated to the tree species diversity. However, the results also indicate that this method is influenced by different factors including the GEDI CHMs dataset of choice and their related spatial resolution, the heterogeneity indices used to calculate the HH and the forest density. Our finding suggest that GEDI LIDAR data can be a valuable tool in the estimation of forest tree heterogeneity and related tree species diversity in forest ecosystems, which can aid in global biodiversity estimation.
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Affiliation(s)
- Michele Torresani
- Free University of Bolzano/Bozen, Faculty of Agricultural, Environmental and Food Sciences, Piazza Universitá/Universitätsplatz 1, 39100 Bolzano/Bozen, Italy
| | - Duccio Rocchini
- BIOME Lab, Department of Biological, Geological and Environmental Sciences, Alma Mater Studiorum University of Bologna, via Irnerio 42, 40126, Bologna, Italy
- Czech University of Life Sciences Prague, Faculty of Environmental Sciences, Department of Spatial Sciences, Kamýcka 129, Praha - Suchdol 16500, Czech Republic
| | - Alessandro Alberti
- Free University of Bolzano/Bozen, Faculty of Agricultural, Environmental and Food Sciences, Piazza Universitá/Universitätsplatz 1, 39100 Bolzano/Bozen, Italy
| | - Vítězslav Moudrý
- Czech University of Life Sciences Prague, Faculty of Environmental Sciences, Department of Spatial Sciences, Kamýcka 129, Praha - Suchdol 16500, Czech Republic
| | - Michael Heym
- Bavarian State Institute of Forestry (LWF), Hans-Carl-von-Carlowitz-Platz-1, 85354 Freising, Germany
| | - Elisa Thouverai
- BIOME Lab, Department of Biological, Geological and Environmental Sciences, Alma Mater Studiorum University of Bologna, via Irnerio 42, 40126, Bologna, Italy
| | - Patrick Kacic
- Department of Remote Sensing, Institute of Geography and Geology, University of Würzburg, Würzburg, Germany
| | - Enrico Tomelleri
- Free University of Bolzano/Bozen, Faculty of Agricultural, Environmental and Food Sciences, Piazza Universitá/Universitätsplatz 1, 39100 Bolzano/Bozen, Italy
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9
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Pradhan K, Ettinger AK, Case MJ, Hille Ris Lambers J. Applying climate change refugia to forest management and old-growth restoration. GLOBAL CHANGE BIOLOGY 2023; 29:3692-3706. [PMID: 37029763 DOI: 10.1111/gcb.16714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 03/09/2023] [Indexed: 06/06/2023]
Abstract
Recent studies highlight the potential of climate change refugia (CCR) to support the persistence of biodiversity in regions that may otherwise become unsuitable with climate change. However, a key challenge in using CCR for climate resilient management lies in how CCR may intersect with existing forest management strategies, and subsequently influence how landscapes buffer species from negative impacts of warming climate. We address this challenge in temperate coastal forests of the Pacific Northwestern United States, where declines in the extent of late-successional forests have prompted efforts to restore old-growth forest structure. One common approach for doing so involves selectively thinning forest stands to enhance structural complexity. However, dense canopy is a key forest feature moderating understory microclimate and potentially buffering organisms from climate change impacts, raising the possibility that approaches for managing forests for old-growth structure may reduce the extent and number of CCR. We used remotely sensed vegetation indices to identify CCR in an experimental forest with control and thinned (restoration) treatments, and explored the influence of biophysical variables on buffering capacity. We found that remotely sensed vegetation indices commonly used to identify CCR were associated with understory temperature and plant community composition, and thus captured aspects of landscape buffering that might instill climate resilience and be of interest to management. We then examined the interaction between current restoration strategies and CCR, and found that selective thinning for promoting old-growth structure had only very minor, if any, effects on climatic buffering. In all, our study demonstrates that forest management approaches aimed at restoring old-growth structure through targeted thinning do not greatly decrease buffering capacity, despite a known link between dense canopy and CCR. More broadly, this study illustrates the value of using remote sensing approaches to identify CCR, facilitating the integration of climate change adaptation with other forest management approaches.
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Affiliation(s)
- Kavya Pradhan
- Department of Biology, University of Washington, Seattle, Washington, USA
| | | | | | - Janneke Hille Ris Lambers
- Department of Biology, University of Washington, Seattle, Washington, USA
- Plant Ecology, Institute of Integrative Biology, d-USYS, Zürich, Switzerland
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10
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Fang D, Xian J, Chen G, Zhang Y, Qin H, Fu X, Lin L, Ai Y, Yang Z, Xu X, Yang Y, Cheng Z. Rapid Adaptation of Chimonobambusa opienensis Leaves to Crown-Thinning in Giant Panda Ecological Corridor, Niba Mountain. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12112109. [PMID: 37299088 DOI: 10.3390/plants12112109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 05/19/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023]
Abstract
Leaf traits reflect the ecological strategy in heterogeneous contexts and are widely used to explore the adaption of plant species to environmental change. However, the knowledge of short-term effect of canopy management on understorey plant leaf traits is still limited. Here, we studied the short-term effect of crown-thinning on the leaf morphological traits of bamboo (Chimonobambusa opienensis), an important understorey plant and staple food for the giant panda (Ailuropoda melanoleuca) of Niba Mountain. Our treatments were two crown-thinnings (spruce plantation, CS, and deciduous broad-leaved forest, CB) and two controls (broad-leaved forest canopy, FC, and the bamboo grove of clearcutting, BC). The results showed that: the CS enhanced the annual leaf length, width, area, and thickness, CB decreased almost all annual leaf traits, and perennial leaf traits in CS and CB were the opposite. The log-transformed allometric relationships of length vs. width, biomass vs. area were significantly positive while those of specific leaf area vs. thickness were significantly negative, which varied largely in treatments and age. The leaf traits and allometric relationships suggested that the CS created a more suitable habitat for bamboo growth. This study highlighted that the understorey bamboo leaf traits could adapt the improved light environment induced by crown-thinning rapidly.
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Affiliation(s)
- Di Fang
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu 611130, China
| | - Junren Xian
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu 611130, China
| | - Guopeng Chen
- College of Forestry, Gansu Agricultural University, Lanzhou 730070, China
| | - Yuanbin Zhang
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China
| | - Hantang Qin
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu 611130, China
- School of Ecological and Environmental Sciences, East China Normal University, Shanghai 201100, China
| | - Xin Fu
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu 611130, China
| | - Liyang Lin
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu 611130, China
| | - Yuxuan Ai
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu 611130, China
| | - Zhanbiao Yang
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu 611130, China
| | - Xiaoxun Xu
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu 611130, China
| | - Yuanxiang Yang
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu 611130, China
| | - Zhang Cheng
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu 611130, China
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11
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Chen M, Shi Z, Liu S, Xu G, Cao X, Chen J, Zhang M, Feng Q, Centritto M, Cao J. Leaf functional traits have more contributions than climate to the variations of leaf stable carbon isotope of different plant functional types on the eastern Qinghai-Tibetan Plateau. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 871:162036. [PMID: 36746282 DOI: 10.1016/j.scitotenv.2023.162036] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 01/23/2023] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
Elucidating the mechanisms that control the leaf stable carbon isotope values (δ13Cleaf) is the prerequisite for the widespread application of δ13Cleaf. However, the competing effects of physiological and environmental factors on δ13Cleaf variations of the different plant functional types (PFTs) have not been disentangled, and the corresponding mechanisms remain unclear. Based on large-scale δ13Cleaf measurements on the eastern Qinghai-Tibetan Plateau, the relative contributions and regulatory pathways of leaf functional traits (LFTs) and climatic factors to δ13Cleaf variations of the different PFTs were investigated. We found that δ13Cleaf of the different PFTs was correlated with annual mean precipitation negatively, but not a simple linear relationship with annual mean temperature and varied by PFTs. Leaf nitrogen content per unit area and leaf mass per area (correlated with δ13Cleaf positively) had more substantial effects on the δ13Cleaf variations of the different PFTs than other LFTs. The relative contributions of LFTs to the δ13Cleaf variations were greater than that of climatic factors, and the direct and indirect effects of climatic factors on δ13Cleaf variations varied by PFTs. Our findings provide new insights into understanding key drivers of δ13Cleaf variations at the PFT level on a regional scale.
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Affiliation(s)
- Miao Chen
- Key Laboratory of Forest Ecology and Environment of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing 100091, China; Miyaluo Research Station of Alpine Forest Ecosystem, Lixian County, Sichuan 623100, China
| | - Zuomin Shi
- Key Laboratory of Forest Ecology and Environment of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing 100091, China; Miyaluo Research Station of Alpine Forest Ecosystem, Lixian County, Sichuan 623100, China; Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China; Institute for Sustainable Plant Protection, National Research Council of Italy, Torino 10135, Italy.
| | - Shun Liu
- Key Laboratory of Forest Ecology and Environment of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing 100091, China; Miyaluo Research Station of Alpine Forest Ecosystem, Lixian County, Sichuan 623100, China
| | - Gexi Xu
- Key Laboratory of Forest Ecology and Environment of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing 100091, China; Miyaluo Research Station of Alpine Forest Ecosystem, Lixian County, Sichuan 623100, China
| | - Xiangwen Cao
- Key Laboratory of Forest Ecology and Environment of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing 100091, China; Miyaluo Research Station of Alpine Forest Ecosystem, Lixian County, Sichuan 623100, China
| | - Jian Chen
- Key Laboratory of Forest Ecology and Environment of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing 100091, China; Miyaluo Research Station of Alpine Forest Ecosystem, Lixian County, Sichuan 623100, China
| | - Miaomiao Zhang
- Key Laboratory of Forest Ecology and Environment of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing 100091, China; Miyaluo Research Station of Alpine Forest Ecosystem, Lixian County, Sichuan 623100, China
| | - Qiuhong Feng
- Ecological Restoration and Conservation on Forest and Wetland Key Laboratory of Sichuan Province, Sichuan Academy of Forestry, Chengdu 610081, China
| | - Mauro Centritto
- Institute for Sustainable Plant Protection, National Research Council of Italy, Torino 10135, Italy
| | - Jiahao Cao
- Institute of Forestry Science of Bailongjiang in Gansu Province, Lanzhou 730046, China
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12
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Wu N, Guo K, Zou Y, He F, Riis T. SER: An R package to characterize environmental regimes. Ecol Evol 2023; 13:e9882. [PMID: 36919015 PMCID: PMC10008288 DOI: 10.1002/ece3.9882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 02/12/2023] [Accepted: 02/20/2023] [Indexed: 03/13/2023] Open
Abstract
Environmental regimes (or environmental legacy or historical legacy) are the dynamics of environmental characteristics over a given (either long or short) time period, such as frequency of mean or extreme events and rate of change, which might be absent by using only contemporary variables. We present SER, an R package for estimating environmental regimes for different environmental variables. Using the data included in the package, several examples are shown. SER is suitable for any type of environmental or biotic variables, including nutrient concentration, light, and dissolved oxygen. In addition, by changing the argument "days_bf," it is possible to compute environmental regimes over any time period, such as days, months, or years. Our case study showed that the inclusion of environmental regimes increased the explained variation of temporal β-diversity and its components. Environmental regimes are expected to advance the "environment-community" relationships in ecological studies. They can further be implemented in other subjects such as social science, socioeconomics, and epidemiology.
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Affiliation(s)
- Naicheng Wu
- Department of Geography and Spatial Information Techniques Ningbo University Ningbo China
| | - Kun Guo
- School of Ecological and Environmental Sciences East China Normal University Shanghai China
| | - Yi Zou
- Department of Health and Environmental Sciences Xi'an Jiaotong-Liverpool University Suzhou China
| | - Fengzhi He
- Leibniz Institute of Freshwater Ecology and Inland Fisheries Berlin Germany
| | - Tenna Riis
- Department of Biology Aarhus University Aarhus C Denmark
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13
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Michalet R, Nemer D, Delerue F. Canopy buffering effects against climatic extremes of deciduous broad‐leaved forests are higher on calcareous than siliceous bedrocks. OIKOS 2023. [DOI: 10.1111/oik.09755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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14
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Heskel M, Pengra J, Kruper A, Anderson MD, Dosch JJ, Goldstein L, Hahn S, Hoffman S. Age and phenology control photosynthesis and leaf traits in the understory woody species, Rhamnus cathartica and Prunus serotina. AOB PLANTS 2022; 14:plac044. [PMID: 36380818 PMCID: PMC9639396 DOI: 10.1093/aobpla/plac044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 09/23/2022] [Indexed: 06/16/2023]
Abstract
Understory plants are often inadequately represented or neglected within analyses of forest ecosystem productivity. Further, the potential impacts of the biological factors of age class and growth form on carbon cycling physiology, and how it may vary across the growing season and amongst species of different native/non-native status, have not been thoroughly considered. Our study examines photosynthesis and associated physical leaf traits in two understory woody species, Rhamnus cathartica, introduced and invasive in North America, and Prunus serotina, a common subcanopy species native to North America. We estimated leaf-level photosynthesis as measured through light and carbon dioxide response curves, dark-adapted chlorophyll fluorescence and leaf traits (leaf mass per area and stomatal density) for each combination of species and age class at plots in the understory of a temperate deciduous research forest in the US Upper Midwest at two time points during the growing season, late spring (late May) and mid-summer (mid-July). Carbon assimilation rates from light response curves (A sat, A 400) and fluorescence capacity estimate F v/F m all increased between the two measurement points in both species and age class. Estimates of carbon reaction capacity (V cmax and J max) exhibited a different directional response to seasonal development, declining in seedlings of both species and P. serotina trees (~8-37 % reduction in V cmax, ~9-34 % reduction in J max), though increased in trees of R. cathartica (+24 % in V cmax, +9 % in J max). Divergent responses in photosynthetic parameters amongst these factors may be explained by species differences in leaf mass per area and stomatal density, which together are likely influenced by both growth form, canopy position and ontogeny. Overall, we believe our findings suggest complex, varied influences on photosynthesis that indicate environmental and biological plasticity which may contribute to the historic and continued expansion of R. cathartica in the US Upper Midwest region.
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Affiliation(s)
| | - Jean Pengra
- Department of Biology, Macalester College, Saint Paul, MN 55105, USA
| | - Ally Kruper
- Department of Biology, Macalester College, Saint Paul, MN 55105, USA
| | | | - Jerald J Dosch
- Department of Biology, Macalester College, Saint Paul, MN 55105, USA
| | - Lianna Goldstein
- Department of Biology, Macalester College, Saint Paul, MN 55105, USA
| | - Shannon Hahn
- Department of Biology, Macalester College, Saint Paul, MN 55105, USA
| | - Sarah Hoffman
- Department of Biology, Macalester College, Saint Paul, MN 55105, USA
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15
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Meeussen C, De Pauw K, Sanczuk P, Brunet J, Cousins SAO, Gasperini C, Hedwall PO, Iacopetti G, Lenoir J, Plue J, Selvi F, Spicher F, Uria Diez J, Verheyen K, Vangansbeke P, De Frenne P. Initial oak regeneration responses to experimental warming along microclimatic and macroclimatic gradients. PLANT BIOLOGY (STUTTGART, GERMANY) 2022; 24:745-757. [PMID: 35373433 DOI: 10.1111/plb.13412] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 01/27/2022] [Accepted: 02/13/2022] [Indexed: 06/14/2023]
Abstract
Quercus spp. are one of the most important tree genera in temperate deciduous forests in terms of biodiversity, economic and cultural perspectives. However, natural regeneration of oaks, depending on specific environmental conditions, is still not sufficiently understood. Oak regeneration dynamics are impacted by climate change, but these climate impacts will depend on local forest management and light and temperature conditions. Here, we studied germination, survival and seedling performance (i.e. aboveground biomass, height, root collar diameter and specific leaf area) of four oak species (Q. cerris, Q. ilex, Q. robur and Q. petraea). Acorns were sown across a wide latitudinal gradient, from Italy to Sweden, and across several microclimatic gradients located within and beyond the species' natural ranges. Microclimatic gradients were applied in terms of forest structure, distance to the forest edge and experimental warming. We found strong interactions between species and latitude, as well as between microclimate and latitude or species. The species thus reacted differently to local and regional changes in light and temperature ; in southern regions the temperate Q. robur and Q. petraea performed best in plots with a complex structure, whereas the Mediterranean Q. ilex and Q. cerris performed better in simply structured forests with a reduced microclimatic buffering capacity. The experimental warming treatment only enhanced height and aboveground biomass of Mediterranean species. Our results show that local microclimatic gradients play a key role in the initial stages of oak regeneration; however, one needs to consider the species-specific responses to forest structure and the macroclimatic context.
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Affiliation(s)
- C Meeussen
- Forest & Nature Lab, Department of Environment, Faculty of Bioscience Engineering, Ghent University, Melle-Gontrode, Belgium
| | - K De Pauw
- Forest & Nature Lab, Department of Environment, Faculty of Bioscience Engineering, Ghent University, Melle-Gontrode, Belgium
| | - P Sanczuk
- Forest & Nature Lab, Department of Environment, Faculty of Bioscience Engineering, Ghent University, Melle-Gontrode, Belgium
| | - J Brunet
- Southern Swedish Forest Research Centre, Swedish University of Agricultural Sciences, Lomma, Sweden
| | - S A O Cousins
- Biogeography and Geomatics, Department of Physical Geography, Stockholm University, Stockholm, Sweden
| | - C Gasperini
- Forest & Nature Lab, Department of Environment, Faculty of Bioscience Engineering, Ghent University, Melle-Gontrode, Belgium
- Department of Agriculture, Food, Environment and Forestry, University of Florence, Florence, Italy
| | - P-O Hedwall
- Southern Swedish Forest Research Centre, Swedish University of Agricultural Sciences, Lomma, Sweden
| | - G Iacopetti
- Department of Agriculture, Food, Environment and Forestry, University of Florence, Florence, Italy
| | - J Lenoir
- UMR CNRS 7058 « Ecologie et Dynamique des Systèmes Anthropisés » (EDYSAN), Université de Picardie Jules Verne, Amiens, France
| | - J Plue
- Biogeography and Geomatics, Department of Physical Geography, Stockholm University, Stockholm, Sweden
| | - F Selvi
- Department of Agriculture, Food, Environment and Forestry, University of Florence, Florence, Italy
| | - F Spicher
- UMR CNRS 7058 « Ecologie et Dynamique des Systèmes Anthropisés » (EDYSAN), Université de Picardie Jules Verne, Amiens, France
| | - J Uria Diez
- Biogeography and Geomatics, Department of Physical Geography, Stockholm University, Stockholm, Sweden
| | - K Verheyen
- Forest & Nature Lab, Department of Environment, Faculty of Bioscience Engineering, Ghent University, Melle-Gontrode, Belgium
| | - P Vangansbeke
- Forest & Nature Lab, Department of Environment, Faculty of Bioscience Engineering, Ghent University, Melle-Gontrode, Belgium
| | - P De Frenne
- Forest & Nature Lab, Department of Environment, Faculty of Bioscience Engineering, Ghent University, Melle-Gontrode, Belgium
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