1
|
Chen Y, Li Y, Wang L, Duan Y, Cao W, Wang X, Li Y. Heterogeneity of leaf stoichiometry of different life forms along environmental transects in typical ecologically fragile areas of China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 910:168495. [PMID: 37977372 DOI: 10.1016/j.scitotenv.2023.168495] [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: 06/30/2023] [Revised: 10/20/2023] [Accepted: 11/09/2023] [Indexed: 11/19/2023]
Abstract
The coupling between carbon (C):nitrogen (N):phosphorus (P) stoichiometry in plant leaves is closely related to ecological functions such as photosynthesis, growth, and biogeochemical cycling. To explore the biogeographic patterns, nutrient limitations, and the relationships between leaf and soil stoichiometry, as well as the factors influencing leaf stoichiometry, we quantified community-level leaf C:N:P stoichiometry in trees, shrubs, and herbs along transects with a total length of about 4300 km. The leaf C:N:P ratios of trees, shrubs, and herbs were approximately 349:13:1, 267:14:1, and 226:12:1, respectively. Leaf C:N:P stoichiometry differed significantly (p < 0.05) among the life forms. Compared with global and Chinese scales, the C, N, and P concentrations were higher and C:N, C:P, and N:P ratios were lower. The leaf C:N:P stoichiometry patterns along a latitude gradient differed among life forms. There was no significant correlation between leaf N and soil total N, whereas leaf P of all three life forms increased significantly with increasing soil total P. Those results suggested a community-level N limitation for trees, shrubs, and herbs growth. Environmental factors explained 43.9, 26.5, and 6.1 % of leaf stoichiometric variations for trees, shrubs, and herbs, respectively. However, the key environmental driving factors gradually changed from climatic factors for trees and shrubs to soil factors for herbs. The results provide new insights into community-level biogeographical patterns and potential factors of leaf stoichiometry among plant life forms.
Collapse
Affiliation(s)
- Yun Chen
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; Naiman Desertification Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Tongliao 028300, China
| | - Yuqiang Li
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; Naiman Desertification Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Tongliao 028300, China; University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Strategic Mineral Resources of the Upper Yellow River, Ministry of Natural Resources, Lanzhou 730000, China.
| | - Lilong Wang
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; Naiman Desertification Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Tongliao 028300, China
| | - Yulong Duan
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; Naiman Desertification Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Tongliao 028300, China
| | - Wenjie Cao
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; Naiman Desertification Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Tongliao 028300, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xuyang Wang
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; Naiman Desertification Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Tongliao 028300, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yulin Li
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; Naiman Desertification Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Tongliao 028300, China
| |
Collapse
|
2
|
Rodríguez V, Bartholomäus A, Witzgall K, Riveras-Muñoz N, Oses R, Liebner S, Kallmeyer J, Rach O, Mueller CW, Seguel O, Scholten T, Wagner D. Microbial impact on initial soil formation in arid and semiarid environments under simulated climate change. Front Microbiol 2024; 15:1319997. [PMID: 38298893 PMCID: PMC10827993 DOI: 10.3389/fmicb.2024.1319997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 01/02/2024] [Indexed: 02/02/2024] Open
Abstract
The microbiota is attributed to be important for initial soil formation under extreme climate conditions, but experimental evidence for its relevance is scarce. To fill this gap, we investigated the impact of in situ microbial communities and their interrelationship with biocrust and plants compared to abiotic controls on soil formation in initial arid and semiarid soils. Additionally, we assessed the response of bacterial communities to climate change. Topsoil and subsoil samples from arid and semiarid sites in the Chilean Coastal Cordillera were incubated for 16 weeks under diurnal temperature and moisture variations to simulate humid climate conditions as part of a climate change scenario. Our findings indicate that microorganism-plant interaction intensified aggregate formation and stabilized soil structure, facilitating initial soil formation. Interestingly, microorganisms alone or in conjunction with biocrust showed no discernible patterns compared to abiotic controls, potentially due to water-masking effects. Arid soils displayed reduced bacterial diversity and developed a new community structure dominated by Proteobacteria, Actinobacteriota, and Planctomycetota, while semiarid soils maintained a consistently dominant community of Acidobacteriota and Proteobacteria. This highlighted a sensitive and specialized bacterial community in arid soils, while semiarid soils exhibited a more complex and stable community. We conclude that microorganism-plant interaction has measurable impacts on initial soil formation in arid and semiarid regions on short time scales under climate change. Additionally, we propose that soil and climate legacies are decisive for the present soil microbial community structure and interactions, future soil development, and microbial responses.
Collapse
Affiliation(s)
- Victoria Rodríguez
- GFZ German Research Centre for Geosciences, Section Geomicrobiology, Potsdam, Germany
| | | | - Kristina Witzgall
- Soil Science, TUM School of Life Sciences, Technical University of Munich, Freising-Weihenstephan, Germany
| | - Nicolás Riveras-Muñoz
- Department of Geosciences, Soil Science and Geomorphology, University of Tübingen, Tübingen, Germany
| | - Romulo Oses
- Centro Regional de Investigación y Desarrollo Sustentable de Atacama (CRIDESAT), Universidad de Atacama, Copiapó, Chile
| | - Susanne Liebner
- GFZ German Research Centre for Geosciences, Section Geomicrobiology, Potsdam, Germany
- Institute of Biochemistry and Biology, University of Potsdam, Potsdam, Germany
| | - Jens Kallmeyer
- GFZ German Research Centre for Geosciences, Section Geomicrobiology, Potsdam, Germany
| | - Oliver Rach
- GFZ German Research Centre for Geosciences, Section Geomorphology, Potsdam, Germany
| | - Carsten W. Mueller
- Institute for Ecology, Chair of Soil Science, Technische Universitaet Berlin, Berlin, Germany
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark
| | - Oscar Seguel
- Facultad de Ciencias Agronómicas, Universidad de Chile, Santiago, Chile
| | - Thomas Scholten
- Department of Geosciences, Soil Science and Geomorphology, University of Tübingen, Tübingen, Germany
| | - Dirk Wagner
- GFZ German Research Centre for Geosciences, Section Geomicrobiology, Potsdam, Germany
- Institute of Geosciences, University of Potsdam, Potsdam, Germany
| |
Collapse
|
3
|
Marasco R, Fusi M, Coscolín C, Barozzi A, Almendral D, Bargiela R, Nutschel CGN, Pfleger C, Dittrich J, Gohlke H, Matesanz R, Sanchez-Carrillo S, Mapelli F, Chernikova TN, Golyshin PN, Ferrer M, Daffonchio D. Enzyme adaptation to habitat thermal legacy shapes the thermal plasticity of marine microbiomes. Nat Commun 2023; 14:1045. [PMID: 36828822 PMCID: PMC9958047 DOI: 10.1038/s41467-023-36610-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Accepted: 02/08/2023] [Indexed: 02/26/2023] Open
Abstract
Microbial communities respond to temperature with physiological adaptation and compositional turnover. Whether thermal selection of enzymes explains marine microbiome plasticity in response to temperature remains unresolved. By quantifying the thermal behaviour of seven functionally-independent enzyme classes (esterase, extradiol dioxygenase, phosphatase, beta-galactosidase, nuclease, transaminase, and aldo-keto reductase) in native proteomes of marine sediment microbiomes from the Irish Sea to the southern Red Sea, we record a significant effect of the mean annual temperature (MAT) on enzyme response in all cases. Activity and stability profiles of 228 esterases and 5 extradiol dioxygenases from sediment and seawater across 70 locations worldwide validate this thermal pattern. Modelling the esterase phase transition temperature as a measure of structural flexibility confirms the observed relationship with MAT. Furthermore, when considering temperature variability in sites with non-significantly different MATs, the broadest range of enzyme thermal behaviour and the highest growth plasticity of the enriched heterotrophic bacteria occur in samples with the widest annual thermal variability. These results indicate that temperature-driven enzyme selection shapes microbiome thermal plasticity and that thermal variability finely tunes such processes and should be considered alongside MAT in forecasting microbial community thermal response.
Collapse
Affiliation(s)
- Ramona Marasco
- Biological and Environmental Sciences and Engineering Division (BESE), Red Sea Research Centre (RSRC), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Marco Fusi
- Biological and Environmental Sciences and Engineering Division (BESE), Red Sea Research Centre (RSRC), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- Centre for Conservation and Restoration Science, Edinburgh Napier University Sighthill Campus, Edinburgh, UK
| | | | - Alan Barozzi
- Biological and Environmental Sciences and Engineering Division (BESE), Red Sea Research Centre (RSRC), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - David Almendral
- Instituto de Catalisis y Petroleoquimica (ICP), CSIC, Madrid, Spain
| | - Rafael Bargiela
- Centre for Environmental Biotechnology, School of Natural Sciences, Bangor University, Deiniol Rd, Bangor, UK
| | | | - Christopher Pfleger
- Mathematisch-Naturwissenschaftliche Fakultät, Institut für Pharmazeutische und Medizinische Chemie, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - Jonas Dittrich
- Mathematisch-Naturwissenschaftliche Fakultät, Institut für Pharmazeutische und Medizinische Chemie, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - Holger Gohlke
- Institute of Bio- and Geosciences (IBG-4: Bioinformatics), Forschungszentrum Jülich GmbH, Jülich, Germany
- Mathematisch-Naturwissenschaftliche Fakultät, Institut für Pharmazeutische und Medizinische Chemie, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
- John von Neumann Institute for Computing (NIC) and Jülich Supercomputing Centre (JSC), Forschungszentrum Jülich GmbH, Jülich, Germany
| | - Ruth Matesanz
- Spectroscopy Laboratory, Centro de Investigaciones Biologicas Margarita Salas (CIB), CSIC, Madrid, Spain
| | - Sergio Sanchez-Carrillo
- Instituto de Catalisis y Petroleoquimica (ICP), CSIC, Madrid, Spain
- Centro de Biologia Molecular Severo Ochoa (CBM), CSIC-UAM, Madrid, Spain
| | - Francesca Mapelli
- Department of Food Environmental and Nutritional Sciences, University of Milan, Milan, Italy
| | - Tatyana N Chernikova
- Centre for Environmental Biotechnology, School of Natural Sciences, Bangor University, Deiniol Rd, Bangor, UK
| | - Peter N Golyshin
- Centre for Environmental Biotechnology, School of Natural Sciences, Bangor University, Deiniol Rd, Bangor, UK
| | - Manuel Ferrer
- Instituto de Catalisis y Petroleoquimica (ICP), CSIC, Madrid, Spain.
| | - Daniele Daffonchio
- Biological and Environmental Sciences and Engineering Division (BESE), Red Sea Research Centre (RSRC), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia.
| |
Collapse
|
4
|
Tedersoo L, Mikryukov V, Zizka A, Bahram M, Hagh‐Doust N, Anslan S, Prylutskyi O, Delgado‐Baquerizo M, Maestre FT, Pärn J, Öpik M, Moora M, Zobel M, Espenberg M, Mander Ü, Khalid AN, Corrales A, Agan A, Vasco‐Palacios A, Saitta A, Rinaldi AC, Verbeken A, Sulistyo BP, Tamgnoue B, Furneaux B, Ritter CD, Nyamukondiwa C, Sharp C, Marín C, Gohar D, Klavina D, Sharmah D, Dai DQ, Nouhra E, Biersma EM, Rähn E, Cameron E, De Crop E, Otsing E, Davydov EA, Albornoz F, Brearley FQ, Buegger F, Zahn G, Bonito G, Hiiesalu I, Barrio IC, Heilmann‐Clausen J, Ankuda J, Kupagme JY, Maciá‐Vicente JG, Fovo JD, Geml J, Alatalo JM, Alvarez‐Manjarrez J, Põldmaa K, Runnel K, Adamson K, Bråthen KA, Pritsch K, Tchan KI, Armolaitis K, Hyde KD, Newsham K, Panksep K, Lateef AA, Tiirmann L, Hansson L, Lamit LJ, Saba M, Tuomi M, Gryzenhout M, Bauters M, Piepenbring M, Wijayawardene N, Yorou NS, Kurina O, Mortimer PE, Meidl P, Kohout P, Nilsson RH, Puusepp R, Drenkhan R, Garibay‐Orijel R, Godoy R, Alkahtani S, Rahimlou S, Dudov SV, Põlme S, Ghosh S, Mundra S, Ahmed T, Netherway T, Henkel TW, Roslin T, Nteziryayo V, Fedosov VE, Onipchenko V, Yasanthika WAE, Lim YW, Soudzilovskaia NA, Antonelli A, Kõljalg U, Abarenkov K. Global patterns in endemicity and vulnerability of soil fungi. GLOBAL CHANGE BIOLOGY 2022; 28:6696-6710. [PMID: 36056462 PMCID: PMC9826061 DOI: 10.1111/gcb.16398] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 08/09/2022] [Indexed: 05/29/2023]
Abstract
Fungi are highly diverse organisms, which provide multiple ecosystem services. However, compared with charismatic animals and plants, the distribution patterns and conservation needs of fungi have been little explored. Here, we examined endemicity patterns, global change vulnerability and conservation priority areas for functional groups of soil fungi based on six global surveys using a high-resolution, long-read metabarcoding approach. We found that the endemicity of all fungi and most functional groups peaks in tropical habitats, including Amazonia, Yucatan, West-Central Africa, Sri Lanka, and New Caledonia, with a negligible island effect compared with plants and animals. We also found that fungi are predominantly vulnerable to drought, heat and land-cover change, particularly in dry tropical regions with high human population density. Fungal conservation areas of highest priority include herbaceous wetlands, tropical forests, and woodlands. We stress that more attention should be focused on the conservation of fungi, especially root symbiotic arbuscular mycorrhizal and ectomycorrhizal fungi in tropical regions as well as unicellular early-diverging groups and macrofungi in general. Given the low overlap between the endemicity of fungi and macroorganisms, but high conservation needs in both groups, detailed analyses on distribution and conservation requirements are warranted for other microorganisms and soil organisms.
Collapse
Affiliation(s)
- Leho Tedersoo
- Mycology and Microbiology CenterUniversity of TartuTartuEstonia
| | | | | | - Mohammad Bahram
- Department of EcologySwedish University of Agricultural SciencesUppsalaSweden
| | | | - Sten Anslan
- Institute of Ecology and Earth SciencesUniversity of TartuTartuEstonia
| | - Oleh Prylutskyi
- Department of Mycology and Plant Resistance, School of BiologyV.N. Karazin Kharkiv National UniversityKharkivUkraine
| | - Manuel Delgado‐Baquerizo
- Laboratorio de Biodiversidad y Funcionamiento Ecosistémico, Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS), CSIC, and Unidad Asociada CSIC‐UPO (BioFun)Universidad Pablo de OlavideSevillaSpain
| | - Fernando T. Maestre
- Departamento de Ecología, Instituto Multidisciplinar para el Estudio del Medio ‘Ramón Margalef’Universidad de AlicanteAlicanteSpain
| | - Jaan Pärn
- Institute of Ecology and Earth SciencesUniversity of TartuTartuEstonia
| | - Maarja Öpik
- Institute of Ecology and Earth SciencesUniversity of TartuTartuEstonia
| | - Mari Moora
- Institute of Ecology and Earth SciencesUniversity of TartuTartuEstonia
| | - Martin Zobel
- Institute of Ecology and Earth SciencesUniversity of TartuTartuEstonia
| | - Mikk Espenberg
- Institute of Ecology and Earth SciencesUniversity of TartuTartuEstonia
| | - Ülo Mander
- Institute of Ecology and Earth SciencesUniversity of TartuTartuEstonia
| | | | - Adriana Corrales
- Centro de Investigaciones en Microbiología y Biotecnología‐UR (CIMBIUR)Universidad del RosarioBogotáColombia
| | - Ahto Agan
- Institute of Forestry and EngineeringEstonian University of Life SciencesTartuEstonia
| | - Aída‐M. Vasco‐Palacios
- BioMicro, Escuela de MicrobiologíaUniversidad de Antioquia UdeAMedellinAntioquiaColombia
| | - Alessandro Saitta
- Department of Agricultural, Food and Forest SciencesUniversity of PalermoPalermoItaly
| | - Andrea C. Rinaldi
- Department of Biomedical SciencesUniversity of CagliariCagliariItaly
| | | | - Bobby P. Sulistyo
- Department of BiomedicineIndonesia International Institute for Life SciencesJakartaIndonesia
| | - Boris Tamgnoue
- Department of Crop ScienceUniversity of DschangDschangCameroon
| | - Brendan Furneaux
- Department of Ecology and GeneticsUppsala UniversityUppsalaSweden
| | | | - Casper Nyamukondiwa
- Department of Biological Sciences and BiotechnologyBotswana International University of Science and TechnologyPalapyeBotswana
| | - Cathy Sharp
- Natural History Museum of ZimbabweBulawayoZimbabwe
| | - César Marín
- Centro de Investigación e Innovación para el Cambio Climático (CiiCC)Universidad SantoTomásSantiagoChile
| | - Daniyal Gohar
- Mycology and Microbiology CenterUniversity of TartuTartuEstonia
| | - Darta Klavina
- Latvian State Forest Research Insitute SilavaSalaspilsLatvia
| | - Dipon Sharmah
- Department of Botany, Jawaharlal Nehru Rajkeeya MahavidyalayaPondicherry UniversityPort BlairIndia
| | - Dong Qin Dai
- College of Biological Resource and Food EngineeringQujing Normal UniversityQujingChina
| | - Eduardo Nouhra
- Instituto Multidisciplinario de Biología Vegetal (CONICET)Universidad Nacional de CórdobaCordobaArgentina
| | | | - Elisabeth Rähn
- Institute of Forestry and EngineeringEstonian University of Life SciencesTartuEstonia
| | - Erin K. Cameron
- Department of Environmental ScienceSaint Mary's UniversityHalifaxCanada
| | | | - Eveli Otsing
- Mycology and Microbiology CenterUniversity of TartuTartuEstonia
| | | | | | - Francis Q. Brearley
- Department of Natural SciencesManchester Metropolitan UniversityManchesterUK
| | | | | | - Gregory Bonito
- Plant, Soil and Microbial SciencesMichigan State UniversityEast LansingMichiganUSA
| | - Inga Hiiesalu
- Institute of Ecology and Earth SciencesUniversity of TartuTartuEstonia
| | - Isabel C. Barrio
- Faculty of Natural and Environmental SciencesAgricultural University of IcelandHvanneyriIceland
| | | | - Jelena Ankuda
- Department of Silviculture and EcologyInstitute of Forestry of Lithuanian Research Centre for Agriculture and Forestry (LAMMC)GirionysLithuania
| | - John Y. Kupagme
- Mycology and Microbiology CenterUniversity of TartuTartuEstonia
| | - Jose G. Maciá‐Vicente
- Plant Ecology and Nature ConservationWageningen University & ResearchWageningenThe Netherlands
| | | | - József Geml
- ELKH‐EKKE Lendület Environmental Microbiome Research GroupEszterházy Károly Catholic UniversityEgerHungary
| | | | | | - Kadri Põldmaa
- Institute of Ecology and Earth SciencesUniversity of TartuTartuEstonia
| | - Kadri Runnel
- Institute of Ecology and Earth SciencesUniversity of TartuTartuEstonia
| | - Kalev Adamson
- Institute of Forestry and EngineeringEstonian University of Life SciencesTartuEstonia
| | - Kari Anne Bråthen
- Department of Arctic and Marine BiologyThe Arctic University of NorwayTromsøNorway
| | | | - Kassim I. Tchan
- Research Unit Tropical Mycology and Plants‐Soil Fungi InteractionsUniversity of ParakouParakouBenin
| | - Kęstutis Armolaitis
- Department of Silviculture and EcologyInstitute of Forestry of Lithuanian Research Centre for Agriculture and Forestry (LAMMC)GirionysLithuania
| | - Kevin D. Hyde
- Center of Excellence in Fungal ResearchMae Fah Luang UniversityChiang RaiThailand
| | | | - Kristel Panksep
- Chair of Hydrobiology and FisheryEstonian University of Life SciencesTartuEstonia
| | | | - Liis Tiirmann
- Mycology and Microbiology CenterUniversity of TartuTartuEstonia
| | - Linda Hansson
- Gothenburg Centre for Sustainable DevelopmentGothenburgSweden
| | - Louis J. Lamit
- Department of BiologySyracuse UniversitySyracuseNew YorkUSA
- Department of Environmental and Forest BiologyState University of New York College of Environmental Science and ForestrySyracuseNew YorkUSA
| | - Malka Saba
- Department of Plant SciencesQuaid‐i‐Azam UniversityIslamabadPakistan
| | - Maria Tuomi
- Department of Arctic and Marine BiologyThe Arctic University of NorwayTromsøNorway
| | - Marieka Gryzenhout
- Department of GeneticsUniversity of the Free StateBloemfonteinSouth Africa
| | | | - Meike Piepenbring
- Mycology Working GroupGoethe University Frankfurt am MainFrankfurt am MainGermany
| | - Nalin Wijayawardene
- College of Biological Resource and Food EngineeringQujing Normal UniversityQujingChina
| | - Nourou S. Yorou
- Research Unit Tropical Mycology and Plants‐Soil Fungi InteractionsUniversity of ParakouParakouBenin
| | - Olavi Kurina
- Institute of Agricultural and Environmental SciencesEstonian University of Life SciencesTartuEstonia
| | - Peter E. Mortimer
- Center For Mountain Futures, Kunming Institute of BotanyChinese Academy of SciencesKunmingChina
| | - Peter Meidl
- Institut für BiologieFreie Universität BerlinBerlinGermany
| | - Petr Kohout
- Institute of MicrobiologyCzech Academy of SciencesPragueCzech Republic
| | - Rolf Henrik Nilsson
- Gothenburg Global Biodiversity CentreUniversity of GothenburgGothenburgSweden
| | - Rasmus Puusepp
- Mycology and Microbiology CenterUniversity of TartuTartuEstonia
| | - Rein Drenkhan
- Institute of Forestry and EngineeringEstonian University of Life SciencesTartuEstonia
| | | | - Roberto Godoy
- Instituto Ciencias Ambientales y EvolutivasUniversidad Austral de ChileValdiviaChile
| | - Saad Alkahtani
- College of ScienceKing Saud UniversityRiyadhSaudi Arabia
| | - Saleh Rahimlou
- Mycology and Microbiology CenterUniversity of TartuTartuEstonia
| | - Sergey V. Dudov
- Department of Ecology and Plant GeographyMoscow Lomonosov State UniversityMoscowRussia
| | - Sergei Põlme
- Mycology and Microbiology CenterUniversity of TartuTartuEstonia
| | - Soumya Ghosh
- Department of GeneticsUniversity of the Free StateBloemfonteinSouth Africa
| | - Sunil Mundra
- Department of Biology, College of ScienceUnited Arab Emirates UniversityAbu DhabiUAE
| | - Talaat Ahmed
- Environmental Science CenterQatar UniversityDohaQatar
| | - Tarquin Netherway
- Department of EcologySwedish University of Agricultural SciencesUppsalaSweden
| | - Terry W. Henkel
- Department of Biological SciencesCalifornia State Polytechnic UniversityArcataCaliforniaUSA
| | - Tomas Roslin
- Department of EcologySwedish University of Agricultural SciencesUppsalaSweden
| | - Vincent Nteziryayo
- Department of Food Science and TechnologyUniversity of BurundiBujumburaBurundi
| | - Vladimir E. Fedosov
- Department of Ecology and Plant GeographyMoscow Lomonosov State UniversityMoscowRussia
| | | | | | - Young Woon Lim
- School of Biological Sciences and Institute of MicrobiologySeoul National UniversitySeoulSouth Korea
| | | | | | - Urmas Kõljalg
- Institute of Ecology and Earth SciencesUniversity of TartuTartuEstonia
| | | |
Collapse
|
5
|
Pescador DS, Delgado-Baquerizo M, Fiore-Donno AM, Singh BK, Bonkowski M, Maestre FT. Ecological clusters of soil taxa within bipartite networks are highly sensitive to climatic conditions in global drylands. Philos Trans R Soc Lond B Biol Sci 2022; 377:20210387. [PMID: 35757878 PMCID: PMC9234812 DOI: 10.1098/rstb.2021.0387] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 01/19/2022] [Indexed: 12/18/2022] Open
Abstract
Determining the influence of climate in driving the global distribution of soil microbial communities is fundamental to help predict potential shifts in soil food webs and ecosystem functioning under global change scenarios. Herein, we used a global survey including 80 dryland ecosystems from six continents, and found that the relative abundance of ecological clusters formed by taxa involved in bacteria-fungi and bacteria-cercozoa bipartite networks was highly sensitive to changes in temperature and aridity. Importantly, such a result was maintained when controlling for soil, geographical location and vegetation attributes, being pH and soil organic carbon important determinants of the relative abundance of the ecological clusters. We also identified potential global associations between important soil microbial taxa, which can be useful to support the conservation of terrestrial ecosystems under global change scenarios. Our results suggest that increases in temperature and aridity such as those forecasted for the next decades in drylands could potentially lead to drastic changes in the community composition of functionally important bipartite networks within soil food webs. This could have important but unknown implications for the provision of key ecosystem functions and associated services driven by the organisms forming these networks if other taxa cannot cope with them. This article is part of the theme issue 'Ecological complexity and the biosphere: the next 30 years'.
Collapse
Affiliation(s)
- David S. Pescador
- Departamento de Farmacología, Farmacognosia y Botánica, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid, Spain
- Departamento de Biología y Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, Móstoles, Madrid, Spain
| | - Manuel Delgado-Baquerizo
- Laboratorio de Biodiversidad y Funcionamiento Ecosistémico, Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS), CSIC, Av. Reina Mercedes 10, E-41012, Sevilla, Spain
- Unidad Asociada CSIC-UPO (BioFun), Universidad Pablo de Olavide, 41013 Sevilla, Spain
| | - Anna Maria Fiore-Donno
- Department of Biology, Institute of Zoology, University of Cologne, 50674 Cologne, Germany
| | - Brajesh K. Singh
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia
- Global Centre for Land-Based Innovation, Western Sydney University, Penrith, NSW, Australia
| | - Michael Bonkowski
- Department of Biology, Institute of Zoology, University of Cologne, 50674 Cologne, Germany
| | - Fernando T. Maestre
- Instituto Multidisciplinar para el Estudio del Medio ‘Ramón Margalef’, Universidad de Alicante, San Vicente del Raspeig, Spain
- Departamento de Ecología, Universidad de Alicante, San Vicente del Raspeig, Spain
| |
Collapse
|
6
|
Guirado E, Delgado-Baquerizo M, Martínez-Valderrama J, Tabik S, Alcaraz-Segura D, Maestre FT. Climate legacies drive the distribution and future restoration potential of dryland forests. NATURE PLANTS 2022; 8:879-886. [PMID: 35879606 PMCID: PMC7613308 DOI: 10.1038/s41477-022-01198-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 06/15/2022] [Indexed: 06/15/2023]
Abstract
Knowing the extent and environmental drivers of forests is key to successfully restore degraded ecosystems, and to mitigate climate change and desertification impacts using tree planting. Water availability is the main limiting factor for the development of forests in drylands, yet the importance of groundwater resources and palaeoclimate as drivers of their current distribution has been neglected. Here we report that mid-Holocene climates and aquifer trends are key predictors of the distribution of dryland forests worldwide. We also updated the global extent of dryland forests to 1,283 million hectares and showed that failing to consider past climates and aquifers has resulted in ignoring or misplacing up to 130 million hectares of forests in drylands. Our findings highlight the importance of a wetter past and well-preserved aquifers to explain the current distribution of dryland forests, and can guide restoration actions by avoiding unsuitable areas for tree establishment in a drier world.
Collapse
Affiliation(s)
- Emilio Guirado
- Instituto Multidisciplinar para el Estudio del Medio 'Ramón Margalef', Universidad de Alicante, Alicante, Spain.
| | - Manuel Delgado-Baquerizo
- Laboratorio de Biodiversidad y Funcionamiento Ecosistémico, Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS), CSIC, Sevilla, Spain
- Unidad Asociada CSIC-UPO (BioFun), Universidad Pablo de Olavide, Sevilla, Spain
| | - Jaime Martínez-Valderrama
- Instituto Multidisciplinar para el Estudio del Medio 'Ramón Margalef', Universidad de Alicante, Alicante, Spain
| | - Siham Tabik
- Department of Computer Science and Artificial Intelligence, Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Granada, Spain
| | - Domingo Alcaraz-Segura
- iecolab. Inter-University Institute for Earth System Research, University of Granada, Granada, Spain
- Department of Botany, Faculty of Science, University of Granada, Granada, Spain
- Andalusian Center for the Assessment and Monitoring of Global Change -CAESCG-, University of Almeria, Almeria, Spain
| | - Fernando T Maestre
- Instituto Multidisciplinar para el Estudio del Medio 'Ramón Margalef', Universidad de Alicante, Alicante, Spain
- Departamento de Ecología, Universidad de Alicante, Alicante, Spain
| |
Collapse
|
7
|
Zhang J, Li M, Xu L, Zhu J, Dai G, He N. C:N:P stoichiometry in terrestrial ecosystems in China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 795:148849. [PMID: 34246133 DOI: 10.1016/j.scitotenv.2021.148849] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 05/05/2021] [Accepted: 06/30/2021] [Indexed: 06/13/2023]
Abstract
Ecological stoichiometry is an efficient tool for exploring the balance and cycling of coupled elements (e.g., carbon [C], nitrogen [N], and phosphorus [P]). Therefore, C:N:P ratios are essential input parameters in most ecological models of productivity or C cycling. However, previous C:N:P ratios estimated using the species arithmetic means exhibit high uncertainty when used as direct model parameters. In this study, we comprehensively calculated C:N:P ratios from organs to ecosystems for 66 typical natural ecosystems in China (e.g., forests, grasslands, and deserts) using the community biomass-weighted mean (CWM), with the consistently measured element data of 3229 site-species combination. The C:N:P ratios were 427:19:1, 885:13:1, 9549:33:1, and 797:18:1 in the leaves, branches, trunks, and roots of terrestrial ecosystems, respectively. Furthermore, the ratios were 91:4:1, 919:17:1, 1121:25:1, and 55:4:1 in ecosystems, plant communities, litter, and soils, respectively. Significant differences were observed in C:N:P ratios among different ecosystem types and biomes, with generally higher ratios in forests. Moreover, the latitudinal patterns of C:N ratios exhibited no obvious trends, whereas both C:P and N:P ratios decreased significantly with increasing latitude, especially in forests. Environmental conditions explained 15.4-86.6% of the spatial variation of C:N:P ratios from organs to ecosystems. In summary, this study systematically demonstrates the variations in biome-scale C:N:P stoichiometry in terrestrial ecosystems, as well as their influencing factors, using the CWM. More importantly, this study provides a systematic dataset of C:N:P ratios from plot to biome scale that can be used to improve relevant ecological models.
Collapse
Affiliation(s)
- Jiahui Zhang
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mingxu Li
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.
| | - Li Xu
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Jianxing Zhu
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Guanhua Dai
- Research Station of Changbai Mountain Forest Ecosystems, Chinese Academy of Sciences, Antu 133613, China
| | - Nianpeng He
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China; Institute of Grassland Science, Northeast Normal University, Key Laboratory of Vegetation Ecology, Ministry of Education, Changchun 130024, China.
| |
Collapse
|
8
|
The Assessment of Climate Change on Rainfall-Runoff Erosivity in the Chirchik–Akhangaran Basin, Uzbekistan. SUSTAINABILITY 2020. [DOI: 10.3390/su12083369] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Changes in the frequency or intensity of rainfall due to climate always affect the conservation of soil resources, which leads to land degradation. The importance of assessing past and future climate differences plays an important role in future planning in relation to climate change. The spatiotemporal variability of erosivity depending on precipitation using the rainfall erosivity (R) of Universal Soil Loss Equation under the global circulation model (GCM) scenarios in the Chirchik–Akhangaran Basin (CHAB), which is in the northeastern part of the Republic of Uzbekistan, was statistically downscaled by using the delta method in Representative Concentration Pathways (RCPs) 4.5 and 8.5 during the periods of the 2030s, 2050s and 2070s. The (R) was used to determine the erosivity of precipitation, and the Revised Universal Soil Loss Equation (RUSLE) itself determined the effects of changes in erosivity. Ten weather station observational data points for the period from 1990 to 2016 were used to validate the global circulation models (GCMs) and erosion model. The assessment results showed an increase in precipitation from the baseline by an average of 11.8%, 14.1% and 16.3% for all models by 2030, 2050 and 2070, respectively, while at the same time, soil loss increased in parallel with precipitation by 17.1%, 20.5 % and 23.3%, respectively, in certain scenarios. The highest rainfall was observed for the models ACCESS1–3 and CanESM2 on both RCPs and periods, while more intense rainfall was the main reason for the increase in the spatial and temporal erosion activity of the rainfall-runoff. This study is a useful reference for improving soil conservation, preventing water erosion and ensuring the future sustainability of agricultural products, as well as improving the operational management and planning of agriculture.
Collapse
|
9
|
Wang P, Li S, Yang X, Zhou J, Shu W, Jiang L. Mechanisms of soil bacterial and fungal community assembly differ among and within islands. Environ Microbiol 2019; 22:1559-1571. [DOI: 10.1111/1462-2920.14864] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Revised: 11/10/2019] [Accepted: 11/14/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Pandeng Wang
- State Key Laboratory of Biocontrol, Guangdong Key Laboratory of Plant Resources and Conservation of Guangdong Higher Education Institutes, School of Life Sciences Sun Yat‐sen University Guangzhou 510275 People's Republic of China
- School of Biological Sciences, Georgia Institute of Technology Atlanta GA 30332 USA
| | - Shao‐Peng Li
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, School of Ecological and Environmental Sciences East China Normal University Shanghai 200241 China
- Institute of Eco‐Chongming (IEC) Shanghai 200062 China
| | - Xian Yang
- School of Biological Sciences, Georgia Institute of Technology Atlanta GA 30332 USA
| | - Jizhong Zhou
- Department of Microbiology and Plant Biology, Institute for Environmental Genomics, and School of Civil Engineering and Environmental Sciences University of Oklahoma Norman OK 73019 USA
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment Tsinghua University Beijing 100084 People's Republic of China
| | - Wensheng Shu
- School of Life Sciences, South China Normal University Guangzhou 510631 People's Republic of China
| | - Lin Jiang
- School of Biological Sciences, Georgia Institute of Technology Atlanta GA 30332 USA
| |
Collapse
|
10
|
Zhao XR, Wu HY, Song XD, Yang SH, Dong Y, Yang JL, Zhang GL. Intra-horizon differentiation of the bacterial community and its co-occurrence network in a typical Plinthic horizon. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 678:692-701. [PMID: 31078860 DOI: 10.1016/j.scitotenv.2019.04.305] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 04/20/2019] [Accepted: 04/20/2019] [Indexed: 06/09/2023]
Abstract
Subsurface soil bacterial community composition and the controlling factors remain largely unknown, especially the micro-zone differentiation of community composition within a horizon. We studied a plinthic horizon to determine how different micro-zones in a horizon affect the bacterial community. The plinthic horizon is a net-like horizon characterized by the segregation of iron forms as shown by contrasting red matrix and white veins, which share common macro-environmental conditions such as climate and land use but differ only in physical and chemical compositions. The studied horizon is typical of the red soils of southeastern China and is an important layer in the red soil Critical Zone. The plinthite is considered to have been formed in the Quaternary and thus is a record of the paleo-environment. We evaluated the difference in the bacterial community composition between the red matrix and white veins and explored the possible assembly mechanisms of their co-occurrence patterns. Compared to the eutrophic environments of a red matrix, higher relative abundances of Acidobacteria and Nitrospirae were observed in the white veins. Similarly, more niches led to a higher density of bacterial co-occurrence patterns in the red matrix. The differences in the bacterial community composition and association networks are due to environmental selection, including the legacy of the paleoclimate that is represented by major element contents and contemporary hydrological properties that are mainly controlled by the soil texture. Our study shows that micro-zones even within a same plinthic horizon can provide different habitats and thus select for specific bacterial communities. Furthermore, this study could improve our understanding of the differentiation of bacterial communities among microenvironments caused by both historical and contemporary processes and help to predict how these communities may respond to future environmental changes.
Collapse
Affiliation(s)
- Xiao-Rui Zhao
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hua-Yong Wu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Xiao-Dong Song
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shun-Hua Yang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yue Dong
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jin-Ling Yang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Gan-Lin Zhang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| |
Collapse
|
11
|
Marquart A, Eldridge DJ, Travers SK, Val J, Blaum N. Large shrubs partly compensate negative effects of grazing on hydrological function in a semi-arid savanna. Basic Appl Ecol 2019. [DOI: 10.1016/j.baae.2019.06.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
12
|
Ye JS, Delgado-Baquerizo M, Soliveres S, Maestre FT. Multifunctionality debt in global drylands linked to past biome and climate. GLOBAL CHANGE BIOLOGY 2019; 25:2152-2161. [PMID: 30924573 DOI: 10.1111/gcb.14631] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 03/20/2019] [Indexed: 06/09/2023]
Abstract
Past vegetation and climatic conditions are known to influence current biodiversity patterns. However, whether their legacy effects affect the provision of multiple ecosystem functions, that is, multifunctionality, remains largely unknown. Here we analyzed soil nutrient stocks and their transformation rates in 236 drylands from six continents to evaluate the associations between current levels of multifunctionality and legacy effects of the Last Glacial Maximum (LGM) desert biome distribution and climate. We found that past desert distribution and temperature legacy, defined as increasing temperature from LGM, were negatively correlated with contemporary multifunctionality even after accounting for predictors such as current climate, soil texture, plant species richness, and site topography. Ecosystems that have been deserts since the LGM had up to 30% lower contemporary multifunctionality compared with those that were nondeserts during the LGM. In addition, ecosystems that experienced higher warming rates since the LGM had lower contemporary multifunctionality than those suffering lower warming rates, with a ~9% reduction per extra degree Celsius. Past desert distribution and temperature legacies had direct negative effects, while temperature legacy also had indirect (via soil sand content) negative effects on multifunctionality. Our results indicate that past biome and climatic conditions have left a strong "functionality debt" in global drylands. They also suggest that ongoing warming and expansion of desert areas may leave a strong fingerprint in the future functioning of dryland ecosystems worldwide that needs to be considered when establishing management actions aiming to combat land degradation and desertification.
Collapse
Affiliation(s)
- Jian-Sheng Ye
- State Key Laboratory of Grassland Agro-ecosystems, School of Life Sciences, Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, Lanzhou University, Lanzhou, China
| | - Manuel Delgado-Baquerizo
- Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, Colorado
- Departamento de Biología y Geología, Física y Química Inorgánica, Escuela Superior de Ciencias Experimentales y Tecnología, Universidad Rey Juan Carlos, Calle Tulipán Sin Número, Móstoles, Spain
| | - Santiago Soliveres
- Departamento de Ecología, Universidad de Alicante, San Vicente del Raspeig (Alicante), Spain
| | - Fernando T Maestre
- Departamento de Biología y Geología, Física y Química Inorgánica, Escuela Superior de Ciencias Experimentales y Tecnología, Universidad Rey Juan Carlos, Calle Tulipán Sin Número, Móstoles, Spain
| |
Collapse
|
13
|
Hinojosa MB, Laudicina VA, Parra A, Albert-Belda E, Moreno JM. Drought and its legacy modulate the post-fire recovery of soil functionality and microbial community structure in a Mediterranean shrubland. GLOBAL CHANGE BIOLOGY 2019; 25:1409-1427. [PMID: 30681232 DOI: 10.1111/gcb.14575] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 01/15/2019] [Accepted: 01/17/2019] [Indexed: 06/09/2023]
Abstract
The effects of drought on soil dynamics after fire are poorly known, particularly its long-term (i.e., years) legacy effects once rainfall returns to normal. Understanding this is particularly important for nutrient-poor soils in semi-arid regions affected by fire, in which rainfall is projected to decrease with climate change. Here, we studied the effects of post-fire drought and its legacy on soil microbial community structure and functionality in a Cistus-Erica shrubland (Spain). Rainfall total and patterns were experimentally modified to produce an unburned control (natural rainfall) and four burned treatments: control (natural rainfall), historical control (long-term average rainfall), moderate drought (percentile 8 historical rainfall, 5 months of drought per year), and severe drought (percentile 2, 7 months of drought). Soil nutrients and microbial community composition (ester-linked fatty acid approach) and functionality (enzyme activities and C mineralization rate) were monitored during the first 4 years after fire under rainfall treatments, plus two additional ones without them (six post-fire years). We found that the recovery of burned soils was lower under drought. Post-fire drought increased nitrate in the short term and reduced available phosphorus, exchangeable potassium, soil organic matter, enzyme activities, and carbon mineralization rate. Moreover, drought decreased soil total microbial biomass and fungi, with bacteria becoming relatively more abundant. Two years after discontinuing the drought treatments, the drought legacy was significant for available phosphorus and enzyme activities. Although microbial biomass did not show any drought legacy effect, the proportion of fungi and bacteria (mainly gram-positive) did, being lower and higher, respectively, in former drought-treated plots. We show that drought has an important impact on soil processes, and that some of its effects persist for at least 2 years after the drought ended. Therefore, drought and its legacy effects can be important for modeling biogeochemical processes in burned soils under future climate change.
Collapse
Affiliation(s)
- María Belén Hinojosa
- Departamento de Ciencias Ambientales, Universidad de Castilla-La Mancha, Campus Fábrica de Armas, Toledo, Spain
| | - Vito Armando Laudicina
- Dipartimento Scienze Agrarie, Alimentari e Forestali, Università degli Studi di Palermo, Viale delle Scienze, Palermo, Italy
| | - Antonio Parra
- Departamento de Ciencias Ambientales, Universidad de Castilla-La Mancha, Campus Fábrica de Armas, Toledo, Spain
| | - Enrique Albert-Belda
- Departamento de Ciencias Ambientales, Universidad de Castilla-La Mancha, Campus Fábrica de Armas, Toledo, Spain
| | - José Manuel Moreno
- Departamento de Ciencias Ambientales, Universidad de Castilla-La Mancha, Campus Fábrica de Armas, Toledo, Spain
| |
Collapse
|
14
|
Eldridge DJ, Delgado-Baquerizo M. The influence of climatic legacies on the distribution of dryland biocrust communities. GLOBAL CHANGE BIOLOGY 2019; 25:327-336. [PMID: 30376206 DOI: 10.1111/gcb.14506] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 10/16/2018] [Accepted: 10/23/2018] [Indexed: 06/08/2023]
Abstract
Predicting the distribution of biocrust species, mosses, lichens and liverworts associated with surface soils is difficult, but climatic legacies (changes in climate over the last 20 k years) can improve our prediction of the distribution of biocrust species. To provide empirical support for this hypothesis, we used a combination of network analyses and structural equation modelling to identify the role of climatic legacies in predicting the distribution of ecological clusters formed by species of mosses, lichens and liverworts using data from 282 large sites distributed across 0.6 million km2 of eastern Australia. Two ecological clusters contained 87% of the 120 moss, lichen and liverwort species. Both clusters contained lichen, moss and liverwort species, but were dominated by different families. Sites where the air temperature increased the most over 20k years (positive temperature legacies) were associated with reductions in the relative abundance of species from the lichen (Peltulaceae and Teloschistaceae) and moss (Bryaceae) families (Cluster A species), greater groundstorey plant cover and lower soil pH. Sites where precipitation has increased over the past 20k years (positive precipitation legacy) were associated with increases in the relative abundance of lichen (Cladoniaceae, Lecideaceae and Thelotremataceae) and moss (Pottiaceae) families (Cluster B species) and lower levels of soil pH. Sites where temperatures have increased the most in the past 20k years suppressed the negative effects of plant cover on Cluster B by reducing plant cover. Increased intensity of grazing suppressed the negative effect of soil pH and the positive effect of soil carbon, on the relative abundance of Cluster B taxa. Finally, increasing temperature and precipitation legacies reduced the negative effect of soil pH on Cluster B. Understanding of the importance of climatic legacies improves our ability to predict how biocrust assemblies might respond to ongoing global environmental change associated with increasing land use intensification, increasing temperature and reduced rainfall.
Collapse
Affiliation(s)
- David J Eldridge
- Centre for Ecosystem Science, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, New South Wales, Australia
| | - Manuel Delgado-Baquerizo
- Departamento de Biología y Geología, Física y Química Inorgánica, Escuela Superior de Ciencias Experimentales y Tecnología, Universidad Rey Juan Carlos, Móstoles, Spain
- Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, Colorado
| |
Collapse
|
15
|
Liu YR, Delgado-Baquerizo M, Bi L, Zhu J, He JZ. Consistent responses of soil microbial taxonomic and functional attributes to mercury pollution across China. MICROBIOME 2018; 6:183. [PMID: 30336790 PMCID: PMC6194565 DOI: 10.1186/s40168-018-0572-7] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 10/08/2018] [Indexed: 05/24/2023]
Abstract
BACKGROUND The ecological consequences of mercury (Hg) pollution-one of the major pollutants worldwide-on microbial taxonomic and functional attributes remain poorly understood and largely unexplored. Using soils from two typical Hg-impacted regions across China, here, we evaluated the role of Hg pollution in regulating bacterial abundance, diversity, and co-occurrence network. We also investigated the associations between Hg contents and the relative abundance of microbial functional genes by analyzing the soil metagenomes from a subset of those sites. RESULTS We found that soil Hg largely influenced the taxonomic and functional attributes of microbial communities in the two studied regions. In general, Hg pollution was negatively related to bacterial abundance, but positively related to the diversity of bacteria in two separate regions. We also found some consistent associations between soil Hg contents and the community composition of bacteria. For example, soil total Hg content was positively related to the relative abundance of Firmicutes and Bacteroidetes in both paddy and upland soils. In contrast, the methylmercury (MeHg) concentration was negatively correlated to the relative abundance of Nitrospirae in the two types of soils. Increases in soil Hg pollution correlated with drastic changes in the relative abundance of ecological clusters within the co-occurrence network of bacterial communities for the two regions. Using metagenomic data, we were also able to detect the effect of Hg pollution on multiple functional genes relevant to key soil processes such as element cycles and Hg transformations (e.g., methylation and reduction). CONCLUSIONS Together, our study provides solid evidence that Hg pollution has predictable and significant effects on multiple taxonomic and functional attributes including bacterial abundance, diversity, and the relative abundance of ecological clusters and functional genes. Our results suggest an increase in soil Hg pollution linked to human activities will lead to predictable shifts in the taxonomic and functional attributes in the Hg-impacted areas, with potential implications for sustainable management of agricultural ecosystems and elsewhere.
Collapse
Affiliation(s)
- Yu-Rong Liu
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China.
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
- College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China.
| | - Manuel Delgado-Baquerizo
- Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, 80309, USA
- Departamento de Biología, Geología, Física y Química Inorgánica, Escuela Superior de Ciencias Experimentales y Tecnología, Universidad Rey Juan Carlos, c/Tulipán s/n, 28933, Móstoles, Spain
| | - Li Bi
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Jun Zhu
- College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Ji-Zheng He
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
- Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, Victoria, 3010, Australia
| |
Collapse
|