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Mao Z, Zhao Z, Da J, Tao Y, Li H, Zhao B, Xing P, Wu Q. The selection of copiotrophs may complicate biodiversity-ecosystem functioning relationships in microbial dilution-to-extinction experiments. Environ Microbiome 2023; 18:19. [PMID: 36932455 PMCID: PMC10024408 DOI: 10.1186/s40793-023-00478-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 03/07/2023] [Indexed: 06/18/2023]
Abstract
The relationships between biodiversity-ecosystem functioning (BEF) for microbial communities are poorly understood despite the important roles of microbes acting in natural ecosystems. Dilution-to-extinction (DTE), a method to manipulate microbial diversity, helps to fill the knowledge gap of microbial BEF relationships and has recently become more popular with the development of high-throughput sequencing techniques. However, the pattern of community assembly processes in DTE experiments is less explored and blocks our further understanding of BEF relationships in DTE studies. Here, a microcosm study and a meta-analysis of DTE studies were carried out to explore the dominant community assembly processes and their potential effect on exploring BEF relationships. While stochastic processes were dominant at low dilution levels due to the high number of rare species, the deterministic processes became stronger at a higher dilution level because the microbial copiotrophs were selected during the regrowth phase and rare species were lost. From the view of microbial functional performances, specialized functions, commonly carried by rare species, are more likely to be impaired in DTE experiments while the broad functions seem to be less impacted due to the good performance of copiotrophs. Our study indicated that shifts in the prokaryotic community and its assembly processes induced by dilutions result in more complex BEF relationships in DTE experiments. Specialized microbial functions could be better used for defining BEF. Our findings may be helpful for future studies to design, explore, and interpret microbial BEF relationships using DTE.
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Affiliation(s)
- Zhendu Mao
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zifan Zhao
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Jun Da
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China
- College of Life Science, Anhui Normal University, Wuhu, 241002, China
| | - Ye Tao
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Huabing Li
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Biying Zhao
- International Genome Center, Jiangsu University, Zhenjiang, 212013, China
| | - Peng Xing
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Qinglong Wu
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China.
- Center for Evolution and Conservation Biology, Southern Marine Sciences and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, 511458, China.
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2
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Rubio-Ríos J, Pérez J, Salinas MJ, Fenoy E, López-Rojo N, Boyero L, Casas JJ. Key plant species and detritivores drive diversity effects on instream leaf litter decomposition more than functional diversity: A microcosm study. Sci Total Environ 2021; 798:149266. [PMID: 34340079 DOI: 10.1016/j.scitotenv.2021.149266] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 07/19/2021] [Accepted: 07/22/2021] [Indexed: 06/13/2023]
Abstract
Anthropogenic impacts on freshwater ecosystems cause critical losses of biodiversity that can in turn impair key processes such as decomposition and nutrient cycling. Forest streams are mainly subsidized by terrestrial organic detritus, so their functioning and conservation status can be altered by changes in forest biodiversity and composition, particularly if these changes involve the replacement of functional groups or the loss of key species. We examined this issue using a microcosm experiment where we manipulated plant functional diversity (FD) (monocultures and low-FD and high-FD mixtures, resulting from different combinations of deciduous and evergreen Quercus species) and the presence of a key species (Alnus glutinosa), all in presence and absence of detritivores, and assessed effects on litter decomposition, nutrient cycling, and fungal and detritivore biomass. We found (i) positive diversity effects on detritivore-mediated decomposition, litter nutrient losses and detritivore biomass exclusively when A. glutinosa was present; and (ii) negative effects on the same processes when microbially mediated and on fungal biomass. Most positive trends could be explained by the higher litter palatability and litter trait variability obtained with the inclusion of alder leaves in the mixture. Our results support the hypothesis of a consistent slowing down of the decomposition process as a result of plant biodiversity loss, and hence effects on stream ecosystem functioning, especially when a key (N-fixing) species is lost; and underscore the importance of detritivores as drivers of plant diversity effects in the studied ecosystem processes.
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Affiliation(s)
- J Rubio-Ríos
- Department of Biology and Geology, University of Almeria (UAL), 04120 Almería, Spain; Andalusian Centre for the Evaluation and Monitoring of Global Change, CAESCG, Almería, Spain.
| | - J Pérez
- Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain
| | - M J Salinas
- Department of Biology and Geology, University of Almeria (UAL), 04120 Almería, Spain; Andalusian Centre for the Evaluation and Monitoring of Global Change, CAESCG, Almería, Spain
| | - E Fenoy
- Department of Biology and Geology, University of Almeria (UAL), 04120 Almería, Spain; Andalusian Centre for the Evaluation and Monitoring of Global Change, CAESCG, Almería, Spain
| | - N López-Rojo
- Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain
| | - L Boyero
- Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain; IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
| | - J J Casas
- Department of Biology and Geology, University of Almeria (UAL), 04120 Almería, Spain; Andalusian Centre for the Evaluation and Monitoring of Global Change, CAESCG, Almería, Spain
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3
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Baudy P, Zubrod JP, Konschak M, Röder N, Nguyen TH, Schreiner VC, Baschien C, Schulz R, Bundschuh M. Environmentally relevant fungicide levels modify fungal community composition and interactions but not functioning. Environ Pollut 2021; 285:117234. [PMID: 33962304 DOI: 10.1016/j.envpol.2021.117234] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 04/16/2021] [Accepted: 04/21/2021] [Indexed: 05/25/2023]
Abstract
Aquatic hyphomycetes (AHs), a group of saprotrophic fungi adapted to submerged leaf litter, play key functional roles in stream ecosystems as decomposers and food source for higher trophic levels. Fungicides, controlling fungal pathogens, target evolutionary conserved molecular processes in fungi and contaminate streams via their use in agricultural and urban landscapes. Thus fungicides pose a risk to AHs and the functions they provide. To investigate the impacts of fungicide exposure on the composition and functioning of AH communities, we exposed four AH species in monocultures and mixed cultures to increasing fungicide concentrations (0, 5, 50, 500, and 2500 μg/L). We assessed the biomass of each species via quantitative real-time PCR. Moreover, leaf decomposition was investigated. In monocultures, none of the species was affected at environmentally relevant fungicide levels (5 and 50 μg/L). The two most tolerant species were able to colonize and decompose leaves even at very high fungicide levels (≥500 μg/L), although less efficiently. In mixed cultures, changes in leaf decomposition reflected the response pattern of the species most tolerant in monocultures. Accordingly, the decomposition process may be safeguarded by tolerant species in combination with functional redundancy. In all fungicide treatments, however, sensitive species were displaced and interactions between fungi changed from complementarity to competition. As AH community composition determines leaves' nutritional quality for consumers, the data suggest that fungicide exposures rather induce bottom-up effects in food webs than impairments in leaf decomposition.
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Affiliation(s)
- Patrick Baudy
- iES Landau, Institute for Environmental Sciences, University of Koblenz-Landau, Fortstraße 7, D-76829, Landau, Germany
| | - Jochen P Zubrod
- iES Landau, Institute for Environmental Sciences, University of Koblenz-Landau, Fortstraße 7, D-76829, Landau, Germany; Eußerthal Ecosystem Research Station, University of Koblenz-Landau, Birkenthalstraße 13, D-76857, Eußerthal, Germany
| | - Marco Konschak
- iES Landau, Institute for Environmental Sciences, University of Koblenz-Landau, Fortstraße 7, D-76829, Landau, Germany
| | - Nina Röder
- iES Landau, Institute for Environmental Sciences, University of Koblenz-Landau, Fortstraße 7, D-76829, Landau, Germany
| | - Thu Huyen Nguyen
- iES Landau, Institute for Environmental Sciences, University of Koblenz-Landau, Fortstraße 7, D-76829, Landau, Germany
| | - Verena C Schreiner
- iES Landau, Institute for Environmental Sciences, University of Koblenz-Landau, Fortstraße 7, D-76829, Landau, Germany
| | - Christiane Baschien
- Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Inhoffenstraße 7B, D-38124, Braunschweig, Germany
| | - Ralf Schulz
- iES Landau, Institute for Environmental Sciences, University of Koblenz-Landau, Fortstraße 7, D-76829, Landau, Germany; Eußerthal Ecosystem Research Station, University of Koblenz-Landau, Birkenthalstraße 13, D-76857, Eußerthal, Germany
| | - Mirco Bundschuh
- iES Landau, Institute for Environmental Sciences, University of Koblenz-Landau, Fortstraße 7, D-76829, Landau, Germany; Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Lennart Hjelms Väg 9, SWE-75007, Uppsala, Sweden.
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4
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Ferlian O, Lintzel EM, Bruelheide H, Guerra CA, Heklau H, Jurburg S, Kühn P, Martinez-Medina A, Unsicker SB, Eisenhauer N, Schädler M. Nutrient status not secondary metabolites drives herbivory and pathogen infestation across differently mycorrhized tree monocultures and mixtures. Basic Appl Ecol 2021; 55:110-123. [PMID: 34493930 PMCID: PMC7611625 DOI: 10.1016/j.baae.2020.09.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Research on tree diversity and antagonists often neglects plant complementarity. We studied species richness/mycorrhizal type effects on leaf herbivory/pathogens. Mycorrhizal type had different effects on herbivory and pathogen infestation. Elemental not metabolite concentrations determined leaf damage.ld.
Research aimed at understanding the mechanisms underlying the relationship between tree diversity and antagonist infestation is often neglecting resource-use complementarity among plant species. We investigated the effects of tree species identity, species richness, and mycorrhizal type on leaf herbivory and pathogen infestation. We used a tree sapling experiment manipulating the two most common mycorrhizal types, arbuscular mycorrhiza and ectomycorrhiza, via respective tree species in monocultures and two-species mixtures. We visually assessed leaf herbivory and pathogen infestation rates, and measured concentrations of a suite of plant metabolites (amino acids, sugars, and phenolics), leaf elemental concentrations (carbon, nitrogen, and phosphorus), and tree biomass. Tree species and mycorrhizal richness had no significant effect on herbivory and pathogen infestation, whereas species identity and mycorrhizal type had. Damage rates were higher in arbuscular mycorrhizal (AM) than in ectomycorrhizal (EM) trees. Our structural equation model (SEM) indicated that elemental, but not metabolite concentrations, determined herbivory and pathogen infestation, suggesting that the investigated chemical defence strategies may not have been involved in the effects found in our study with tree saplings. Other chemical and physical defence strategies as well as species identity as its determinant may have played a more crucial role in the studied saplings. Furthermore, the SEM indicated a direct positive effect of AM trees on herbivory rates, suggesting that other dominant mechanisms, not considered here, were involved as well. We found differences in the attribution of elemental concentrations between the two rates. This points to the fact that herbivory and pathogen infestation are driven by distinct mechanisms. Our study highlights the importance of biotic contexts for understanding the mechanisms underlying the effects of biodiversity on tree-antagonist interactions.
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Affiliation(s)
- Olga Ferlian
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, 04103 Leipzig, Germany.,Institute of Biology, Leipzig University, Deutscher Platz 5e, 04103 Leipzig, Germany
| | - Esther-Marie Lintzel
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, 04103 Leipzig, Germany.,Institute of Biology, Leipzig University, Deutscher Platz 5e, 04103 Leipzig, Germany
| | - Helge Bruelheide
- Institute of Biology/Geobotany and Botanical Garden, Martin Luther University Halle-Wittenberg, Am Kirchtor 1, 06108 Halle (Saale), Germany.,German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, 04103 Leipzig, Germany
| | - Carlos A Guerra
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, 04103 Leipzig, Germany.,Institute of Biology/Geobotany and Botanical Garden, Martin Luther University Halle-Wittenberg, Am Kirchtor 1, 06108 Halle (Saale), Germany
| | - Heike Heklau
- Institute of Biology/Geobotany and Botanical Garden, Martin Luther University Halle-Wittenberg, Am Kirchtor 1, 06108 Halle (Saale), Germany
| | - Stephanie Jurburg
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, 04103 Leipzig, Germany.,Institute of Biology, Leipzig University, Deutscher Platz 5e, 04103 Leipzig, Germany
| | - Paul Kühn
- Institute of Biology/Geobotany and Botanical Garden, Martin Luther University Halle-Wittenberg, Am Kirchtor 1, 06108 Halle (Saale), Germany
| | - Ainhoa Martinez-Medina
- Plant-Microorganism Interaction Unit, Institute of Natural Resources and Agrobiology of Salamanca (IRNASA-CSIC), Calle Cordel de Merinas, 40, 37008 Salamanca, Spain
| | - Sybille B Unsicker
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, Hans-Knöll-Straße 8, 07745 Jena, Germany
| | - Nico Eisenhauer
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, 04103 Leipzig, Germany.,Institute of Biology, Leipzig University, Deutscher Platz 5e, 04103 Leipzig, Germany
| | - Martin Schädler
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, 04103 Leipzig, Germany.,Department of Community Ecology, Helmholtz Centre for Environmental Research - UFZ, Theodor-Lieser-Str. 4, 06120 Halle (Saale), Germany
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5
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Baudy P, Zubrod JP, Konschak M, Kolbenschlag S, Pollitt A, Baschien C, Schulz R, Bundschuh M. Fungal-fungal and fungal-bacterial interactions in aquatic decomposer communities: bacteria promote fungal diversity. Ecology 2021; 102:e03471. [PMID: 34260739 DOI: 10.1002/ecy.3471] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 01/19/2021] [Accepted: 03/15/2021] [Indexed: 11/07/2022]
Abstract
Fungi produce a variety of extracellular enzymes making recalcitrant substrates bioavailable. Thus, fungi are central for decomposition of dead organic matter such as leaf litter. Despite their ecological importance, our understanding of relationships between fungal species diversity and ecosystem functioning is limited, especially with regard to aquatic habitats. Moreover, fungal interactions with other groups of microorganisms such as bacteria are rarely investigated. This lack of information may be attributed to methodological limitations in tracking the biomass of individual fungal species in communities, impeding a detailed assessment of deviations from the overall performance expected from the sum of individual species' performances, so-called net diversity effects (NDEs). We used fungal species-specific biomolecular tools to target fungal-fungal and fungal-bacterial interactions on submerged leaves using four cosmopolitan aquatic fungal species and a stream microbial community dominated by bacteria. In microcosms, we experimentally manipulated fungal diversity and bacterial absence/presence and assessed functional performances and fungal community composition after 14 days of incubation. Fungal community data was used to evaluate NDEs on leaf colonization. The individual fungal species were functionally distinct and fungal cultures were on average more efficient than the bacterial culture. In absence of bacteria, NDEs correlated with growth rate (negatively) and genetic divergence (positively), but were predominantly negative, suggesting that higher fungal diversity led to a lower colonization success (niche overlap). In both absence and presence of bacteria, the overall functional performances of the communities were largely defined by their composition (i.e., no interactions at the functional level). In presence of bacteria, NDEs correlated with genetic divergence (positively) and were largely positive, suggesting higher fungal diversity stimulated colonization (niche complementarity). This stimulation may be driven by a bacteria-induced inhibition of fungal growth, alleviating competition among fungi. Resulting feedback loops eventually promote fungal coexistence and synergistic interactions. Nonetheless, overall functional performances are reduced compared to bacteria-free cultures. These findings highlight the necessity to conduct future studies, investigating biodiversity-ecosystem functioning relationships using artificial systems, without exclusion of key organisms naturally co-occurring in the compartment of interest. Otherwise, study outcomes might not reflect true ecological relationships and ultimately misguide conservation strategies.
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Affiliation(s)
- Patrick Baudy
- iES Landau, Institute for Environmental Sciences, University of Koblenz-Landau, Fortstraße 7, Landau, D-76829, Germany
| | - Jochen P Zubrod
- iES Landau, Institute for Environmental Sciences, University of Koblenz-Landau, Fortstraße 7, Landau, D-76829, Germany
- Eußerthal Ecosystem Research Station, University of Koblenz-Landau, Birkenthalstraße 13, Eußerthal, D-76857, Germany
| | - Marco Konschak
- iES Landau, Institute for Environmental Sciences, University of Koblenz-Landau, Fortstraße 7, Landau, D-76829, Germany
| | - Sara Kolbenschlag
- iES Landau, Institute for Environmental Sciences, University of Koblenz-Landau, Fortstraße 7, Landau, D-76829, Germany
| | - Annika Pollitt
- iES Landau, Institute for Environmental Sciences, University of Koblenz-Landau, Fortstraße 7, Landau, D-76829, Germany
| | - Christiane Baschien
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures GmbH, Inhoffenstraße 7B, Braunschweig, D-38124, Germany
| | - Ralf Schulz
- iES Landau, Institute for Environmental Sciences, University of Koblenz-Landau, Fortstraße 7, Landau, D-76829, Germany
- Eußerthal Ecosystem Research Station, University of Koblenz-Landau, Birkenthalstraße 13, Eußerthal, D-76857, Germany
| | - Mirco Bundschuh
- iES Landau, Institute for Environmental Sciences, University of Koblenz-Landau, Fortstraße 7, Landau, D-76829, Germany
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Box 7050, Uppsala, SWE-75007, Sweden
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6
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Guo Y, Xu T, Cheng J, Wei G, Lin Y. Above- and belowground biodiversity drives soil multifunctionality along a long-term grassland restoration chronosequence. Sci Total Environ 2021; 772:145010. [PMID: 33578173 DOI: 10.1016/j.scitotenv.2021.145010] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 12/29/2020] [Accepted: 12/30/2020] [Indexed: 06/12/2023]
Abstract
Restoring degraded land is an efficient strategy for improving biodiversity and ecosystem functioning. However, the effects of aboveground and belowground biodiversity on multiple ecosystem functions (multifunctionality) during ecological restoration are not well understood. Here, the relationships between plant and microbial communities and soil multifunctionality were assessed in a 30-year natural grassland restoration chronosequence on the Loess Plateau, China. Soil multifunctionality, in relation to the carbon, nitrogen, phosphorus, and sulfur cycles, was quantified. Soil bacterial and fungal communities were analyzed by high-throughput sequencing using the Illumina HiSeq platform. The results showed that soil multifunctionality was significantly increased with the increasing period of grassland restoration. Plant and bacterial diversity, rather than fungal diversity, were significantly and positively correlated with soil multifunctionality based on single functions, averaging, and multiple threshold approaches. Random forest and structural equation modeling analyses showed that soil multifunctionality was affected by both biotic and abiotic factors. Plant diversity and bacterial community composition had direct effects, whereas plant community composition had both direct and indirect effects on soil multifunctionality. Restoration period and soil pH indirectly affected soil multifunctionality by altering plant and bacterial communities. This work demonstrates the importance of aboveground and belowground biodiversity in driving soil multifunctionality during grassland restoration. The results provide empirical evidence that conserving biodiversity is crucial for maintaining ecosystem functions in restored areas.
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Affiliation(s)
- Yanqing Guo
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Tengqi Xu
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Jimin Cheng
- Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, PR China
| | - Gehong Wei
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, PR China.
| | - Yanbing Lin
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, PR China
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Ganault P, Nahmani J, Hättenschwiler S, Gillespie LM, David JF, Henneron L, Iorio E, Mazzia C, Muys B, Pasquet A, Prada-Salcedo LD, Wambsganss J, Decaëns T. Relative importance of tree species richness, tree functional type, and microenvironment for soil macrofauna communities in European forests. Oecologia 2021; 196:455-468. [PMID: 33959812 DOI: 10.1007/s00442-021-04931-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 04/26/2021] [Indexed: 11/25/2022]
Abstract
Soil fauna communities are major drivers of many forest ecosystem processes. Tree species diversity and composition shape soil fauna communities, but their relationships are poorly understood, notably whether or not soil fauna diversity depends on tree species diversity. Here, we characterized soil macrofauna communities from forests composed of either one or three tree species, located in four different climate zones and growing on different soil types. Using multivariate analysis and model averaging we investigated the relative importance of tree species richness, tree functional type (deciduous vs. evergreen), litter quality, microhabitat and microclimatic characteristics as drivers of soil macrofauna community composition and structure. We found that macrofauna communities in mixed forest stands were represented by a higher number of broad taxonomic groups that were more diverse and more evenly represented. We also observed a switch from earthworm-dominated to predator-dominated communities with increasing evergreen proportion in forest stands, which we interpreted as a result of a lower litter quality and a higher forest floor mass. Finally, canopy openness was positively related to detritivore abundance and biomass, leading to higher predator species richness and diversity probably through trophic cascade effects. Interestingly, considering different levels of taxonomic resolution in the analyses highlighted different facets of macrofauna response to tree species richness, likely a result of both different ecological niche range and methodological constraints. Overall, our study supports the positive effects of tree species richness on macrofauna diversity and abundance through multiple changes in resource quality and availability, microhabitat, and microclimate modifications.
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Affiliation(s)
- Pierre Ganault
- CEFE, Univ Montpellier, CNRS, EPHE, IRD, Univ Paul Valéry Montpellier 3, Montpellier, France.
| | - Johanne Nahmani
- CEFE, Univ Montpellier, CNRS, EPHE, IRD, Univ Paul Valéry Montpellier 3, Montpellier, France
| | - Stephan Hättenschwiler
- CEFE, Univ Montpellier, CNRS, EPHE, IRD, Univ Paul Valéry Montpellier 3, Montpellier, France
| | | | - Jean-François David
- CEFE, Univ Montpellier, CNRS, EPHE, IRD, Univ Paul Valéry Montpellier 3, Montpellier, France
| | - Ludovic Henneron
- Normandie University, UNIROUEN, ECODIV, Place E. Blondel, UFR Sciences et Techniques, 76821, Mont Saint Aignan cedex, France.,Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, 901 83, Umeå, Sweden
| | - Etienne Iorio
- EI, Entomologie and Myriapodologie, 522 chemin Saunier, 13690, Graveson, France
| | - Christophe Mazzia
- UAPV UMR 7263 CNRS IRD, Institut Méditerranéen de Biodiversité et Ecologie, 301 rue Baruch de Spinoza, BP21239, 84916, Avignon cedex 09, France
| | - Bart Muys
- Division Forest, Nature and Landscape, Department of Earth and Environmental Sciences, KU Leuven, Celestijnenlaan 200E, Box 2411, 3001, Leuven, Belgium
| | - Alain Pasquet
- CNRS, University of Lorrain, Faculté Des Sciences Et Technologies, UR AFPA,, BP 239, F-54504, Vandoeuvre les Nancy Cedex, France
| | - Luis Daniel Prada-Salcedo
- Helmholtz-Centre for Environmental Research, UFZ, Department of Soil Ecology, Theodor-Lieser-Straße 4, D-06120, Halle (Saale), Germany.,University of Leipzig, Department of Biology, Johannisallee 21, D-04103, Leipzig, Germany
| | - Janna Wambsganss
- Univeristy of Freiburg, Chair of Silviculture, Faculty of Environment and Natural Resources, Tennenbacherstr. 4D, D-79085, Freiburg, Germany
| | - Thibaud Decaëns
- CEFE, Univ Montpellier, CNRS, EPHE, IRD, Univ Paul Valéry Montpellier 3, Montpellier, France
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8
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Mori AS. Advancing nature-based approaches to address the biodiversity and climate emergency. Ecol Lett 2020; 23:1729-1732. [PMID: 32959975 DOI: 10.1111/ele.13594] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 07/21/2020] [Accepted: 07/23/2020] [Indexed: 01/11/2023]
Abstract
Biodiversity loss and climate change are often considered as intertwined issues. However, they do not receive equal attention. Even in the context of nature-based climate solutions, which consider ecosystems to be crucial to mitigate and adapt to the impacts of climate change, the potential role of biodiversity has received little attention. Here this essay emphasizes biodiversity as the cause-not only the consequence-to help society and nature face challenges associated with the changing climate. Reconsidering and emphasizing the linkages between these twin environmental crises is urgently needed to make collective efforts for the environment truly effective.
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Affiliation(s)
- Akira S Mori
- Graduate School of Environment and Information Sciences, Yokohama National University, 79-7 Tokiwadai, Hodogaya, Yokohama, Kanagawa, 240-8501, Japan
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Chacón‐Labella J, García Palacios P, Matesanz S, Schöb C, Milla R. Plant domestication disrupts biodiversity effects across major crop types. Ecol Lett 2019; 22:1472-1482. [PMID: 31270929 PMCID: PMC7163516 DOI: 10.1111/ele.13336] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 04/08/2019] [Accepted: 06/12/2019] [Indexed: 01/20/2023]
Abstract
Plant diversity fosters productivity in natural ecosystems. Biodiversity effects might increase agricultural yields at no cost in additional inputs. However, the effects of diversity on crop assemblages are inconsistent, probably because crops and wild plants differ in a range of traits relevant to plant-plant interactions. We tested whether domestication has changed the potential of crop mixtures to over-yield by comparing the performance and traits of major crop species and those of their wild progenitors under varying levels of diversity. We found stronger biodiversity effects in mixtures of wild progenitors, due to larger selection effects. Variation in selection effects was partly explained by within-mixture differences in leaf size. Our results indicate that domestication might disrupt the ability of crops to benefit from diverse neighbourhoods via reduced trait variance. These results highlight potential limitations of current crop mixtures to over-yield and the potential of breeding to re-establish variance and increase mixture performance.
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Affiliation(s)
- Julia Chacón‐Labella
- Universidad Rey Juan Carlos. C/ Tulipán s/n. Móstoles C.P. 28933MadridSpain
- Department of Environmental Systems ScienceSwiss Federal Institute of Technology, ETH Zürich8092ZürichSwitzerland
- Department of Environment and AgronomyINIA, Avda. A Coruña km 7.5, C.P. 28040MadridSpain
| | | | - Silvia Matesanz
- Universidad Rey Juan Carlos. C/ Tulipán s/n. Móstoles C.P. 28933MadridSpain
| | - Christian Schöb
- Department of Environmental Systems ScienceSwiss Federal Institute of Technology, ETH Zürich8092ZürichSwitzerland
| | - Rubén Milla
- Universidad Rey Juan Carlos. C/ Tulipán s/n. Móstoles C.P. 28933MadridSpain
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10
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Passy SI. Framework for community functioning: synthesis of stress gradient and resource partitioning concepts. PeerJ 2017; 5:e3885. [PMID: 29018618 PMCID: PMC5628606 DOI: 10.7717/peerj.3885] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Accepted: 09/13/2017] [Indexed: 11/20/2022] Open
Abstract
To understand how communities function and generate abundance, I develop a framework integrating elements from the stress gradient and resource partitioning concepts. The framework suggests that guild abundance depends on environmental and spatial factors but also on inter-guild interactions (competitor or facilitator richness), which can alter the fundamental niche of constituent species in negative (competition) or positive direction (facilitation). Consequently, the environmental and spatial mechanisms driving guild abundance would differ across guilds and interaction modes. Using continental data on stream diatoms and physico-chemistry, the roles of these mechanisms were tested under three interaction modes—shared preference, distinct preference, and facilitative, whereby pairs of guilds exhibited, respectively, a dominance-tolerance tradeoff along a eutrophication gradient, specialization along a pH gradient, or a donor-recipient relationship along a nitrogen gradient. Representative of the shared preference mode were the motile (dominant) and low profile (tolerant) guilds, of the distinct preference mode—the acidophilous and alkaliphilous (low profile) guilds, and of the facilitative mode—nitrogen fixers (donors) and motile species (recipients). In each mode, the influences of environment, space (latitude and longitude), and competitor or facilitator richness on guild density were assessed by variance partitioning. Pure environment constrained most strongly the density of the dominant, the acidophilous, and the recipient guild in the shared preference, distinct preference, and facilitative mode, respectively, while spatial effects were important only for the low profile guild. Higher competitor richness was associated with lower density of the tolerant guild in the shared preference mode, both guilds in the distinct preference mode, and the donor guild in the facilitative mode. Conversely, recipient density in the facilitative mode increased with donor richness in stressful nitrogen-poor environments. Thus, diatom guild abundance patterns were determined primarily by biotic and/or environmental impacts and, with the exception of the low profile guild, were insensitive to spatial effects. This framework identifies major sources of variability in diatom guild abundance with implications for the understanding of biodiversity-ecosystem functioning.
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Affiliation(s)
- Sophia I Passy
- Department of Biology, University of Texas at Arlington, Arlington, TX, United States of America
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11
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Martin EA, Reineking B, Seo B, Steffan-Dewenter I. Pest control of aphids depends on landscape complexity and natural enemy interactions. PeerJ 2015; 3:e1095. [PMID: 26734497 PMCID: PMC4699780 DOI: 10.7717/peerj.1095] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 06/18/2015] [Indexed: 12/04/2022] Open
Abstract
Aphids are a major concern in agricultural crops worldwide, and control by natural enemies is an essential component of the ecological intensification of agriculture. Although the complexity of agricultural landscapes is known to influence natural enemies of pests, few studies have measured the degree of pest control by different enemy guilds across gradients in landscape complexity. Here, we use multiple natural-enemy exclosures replicated in 18 fields across a gradient in landscape complexity to investigate (1) the strength of natural pest control across landscapes, measured as the difference between pest pressure in the presence and in the absence of natural enemies; (2) the differential contributions of natural enemy guilds to pest control, and the nature of their interactions across landscapes. We show that natural pest control of aphids increased up to six-fold from simple to complex landscapes. In the absence of pest control, aphid population growth was higher in complex than simple landscapes, but was reduced by natural enemies to similar growth rates across all landscapes. The effects of enemy guilds were landscape-dependent. Particularly in complex landscapes, total pest control was supplied by the combined contribution of flying insects and ground-dwellers. Birds had little overall impact on aphid control. Despite evidence for intraguild predation of flying insects by ground-dwellers and birds, the overall effect of enemy guilds on aphid control was complementary. Understanding pest control services at large spatial scales is critical to increase the success of ecological intensification schemes. Our results suggest that, where aphids are the main pest of concern, interactions between natural enemies are largely complementary and lead to a strongly positive effect of landscape complexity on pest control. Increasing the availability of seminatural habitats in agricultural landscapes may thus benefit not only natural enemies, but also the effectiveness of aphid natural pest control.
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Affiliation(s)
- Emily A Martin
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg , Am Hubland, Würzburg , Germany
| | - Björn Reineking
- Irstea, UR EMGR, St-Martin-d'Hères, France; Université Grenoble Alpes, Grenoble, France; Biogeographical Modelling, Bayreuth Center of Ecology and Environmental Research BayCEER, University of Bayreuth, Bayreuth, Germany
| | - Bumsuk Seo
- Biogeographical Modelling, Bayreuth Center of Ecology and Environmental Research BayCEER, University of Bayreuth, Bayreuth, Germany; Department of Plant Ecology, University of Bayreuth, Bayreuth, Germany
| | - Ingolf Steffan-Dewenter
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg , Am Hubland, Würzburg , Germany
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12
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Allan E, Manning P, Alt F, Binkenstein J, Blaser S, Blüthgen N, Böhm S, Grassein F, Hölzel N, Klaus VH, Kleinebecker T, Morris EK, Oelmann Y, Prati D, Renner SC, Rillig MC, Schaefer M, Schloter M, Schmitt B, Schöning I, Schrumpf M, Solly E, Sorkau E, Steckel J, Steffen-Dewenter I, Stempfhuber B, Tschapka M, Weiner CN, Weisser WW, Werner M, Westphal C, Wilcke W, Fischer M. Land use intensification alters ecosystem multifunctionality via loss of biodiversity and changes to functional composition. Ecol Lett 2015; 18:834-843. [PMID: 26096863 PMCID: PMC4744976 DOI: 10.1111/ele.12469] [Citation(s) in RCA: 263] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Revised: 03/12/2015] [Accepted: 03/27/2015] [Indexed: 11/24/2022]
Abstract
Global change, especially land‐use intensification, affects human well‐being by impacting the delivery of multiple ecosystem services (multifunctionality). However, whether biodiversity loss is a major component of global change effects on multifunctionality in real‐world ecosystems, as in experimental ones, remains unclear. Therefore, we assessed biodiversity, functional composition and 14 ecosystem services on 150 agricultural grasslands differing in land‐use intensity. We also introduce five multifunctionality measures in which ecosystem services were weighted according to realistic land‐use objectives. We found that indirect land‐use effects, i.e. those mediated by biodiversity loss and by changes to functional composition, were as strong as direct effects on average. Their strength varied with land‐use objectives and regional context. Biodiversity loss explained indirect effects in a region of intermediate productivity and was most damaging when land‐use objectives favoured supporting and cultural services. In contrast, functional composition shifts, towards fast‐growing plant species, strongly increased provisioning services in more inherently unproductive grasslands.
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Affiliation(s)
- Eric Allan
- Institute of Plant Sciences, University of Bern, Altenbergrain 21, 3013, Bern, Switzerland.,Centre for Development and Environment, University of Bern, Hallerstrasse 10, 3012, Bern, Switzerland
| | - Pete Manning
- Institute of Plant Sciences, University of Bern, Altenbergrain 21, 3013, Bern, Switzerland
| | - Fabian Alt
- Geocology, University of Tuebingen, Ruemelinstr. 19-23, 72070, Tuebingen, Germany
| | - Julia Binkenstein
- Department of Ecology and Evolutionary Biology, Faculty of Biology, University of Freiburg, Hauptstraße 1, 79104, Freiburg i. Br, Germany
| | - Stefan Blaser
- Institute of Plant Sciences, University of Bern, Altenbergrain 21, 3013, Bern, Switzerland
| | - Nico Blüthgen
- Ecological Networks, Biology, Technische Universität Darmstadt, Schnittspahnstr. 3, 64287, Darmstadt, Germany
| | - Stefan Böhm
- Institute of Experimental Ecology, University of Ulm, Albert-Einstein-Allee 11, 89069, Ulm, Germany
| | - Fabrice Grassein
- Institute of Plant Sciences, University of Bern, Altenbergrain 21, 3013, Bern, Switzerland
| | - Norbert Hölzel
- Institute of Landscape Ecology, University of Münster, Heisenbergstr. 2, 48149, Münster, Germany
| | - Valentin H Klaus
- Institute of Landscape Ecology, University of Münster, Heisenbergstr. 2, 48149, Münster, Germany
| | - Till Kleinebecker
- Institute of Landscape Ecology, University of Münster, Heisenbergstr. 2, 48149, Münster, Germany
| | - E Kathryn Morris
- Xavier University, 3800 Victory Parkway, Cincinnati, OH, 45207, USA
| | - Yvonne Oelmann
- Geocology, University of Tuebingen, Ruemelinstr. 19-23, 72070, Tuebingen, Germany
| | - Daniel Prati
- Institute of Plant Sciences, University of Bern, Altenbergrain 21, 3013, Bern, Switzerland
| | - Swen C Renner
- Institute of Experimental Ecology, University of Ulm, Albert-Einstein-Allee 11, 89069, Ulm, Germany.,Institute for Biology I (Zoology), University of Freiburg, Freiburg, Germany.,Smithsonian Conservation Biology Center at the National Zoological Park, Front Royal, 1500 Remount Road, VA, 22630, USA
| | - Matthias C Rillig
- Freie Universität Berlin, Plant Ecology, Altensteinstr. 6, 14195, Berlin, Germany.,Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB), 14195, Berlin, Germany
| | - Martin Schaefer
- Department of Ecology and Evolutionary Biology, Faculty of Biology, University of Freiburg, Hauptstraße 1, 79104, Freiburg i. Br, Germany
| | - Michael Schloter
- Research Unit for Environmental Genomics, Helmholtz Zentrum München, Ingolstädter Landstr. 1, 85758, Oberschleissheim, Germany
| | - Barbara Schmitt
- Institute of Plant Sciences, University of Bern, Altenbergrain 21, 3013, Bern, Switzerland
| | - Ingo Schöning
- Max Planck Institute for Biogeochemistry, Hans-Knöll-Str. 10, 07745, Jena, Germany
| | - Marion Schrumpf
- Max Planck Institute for Biogeochemistry, Hans-Knöll-Str. 10, 07745, Jena, Germany
| | - Emily Solly
- Max Planck Institute for Biogeochemistry, Hans-Knöll-Str. 10, 07745, Jena, Germany
| | - Elisabeth Sorkau
- Geocology, University of Tuebingen, Ruemelinstr. 19-23, 72070, Tuebingen, Germany
| | - Juliane Steckel
- Department of Animal Ecology and Tropical Biology, Biocentre, University of Würzburg, Am Hubland, 97974, Würzburg, Germany
| | - Ingolf Steffen-Dewenter
- Department of Animal Ecology and Tropical Biology, Biocentre, University of Würzburg, Am Hubland, 97974, Würzburg, Germany
| | - Barbara Stempfhuber
- Helmholtz Zentrum München, German Research Centre for Environmental Health, Environmental Genomics, Ingolstädter Landstraße 1, 85764, Neuherberg, Germany
| | - Marco Tschapka
- Institute of Experimental Ecology, University of Ulm, Albert-Einstein-Allee 11, 89069, Ulm, Germany.,Smithsonian Tropical Research Institute, P.O. Box 0843-03092, Balboa Ancón, Panama
| | - Christiane N Weiner
- Department of Animal Ecology and Tropical Biology, Biocentre, University of Würzburg, Am Hubland, 97974, Würzburg, Germany
| | - Wolfgang W Weisser
- Institute of Ecology, Friedrich-Schiller-University Jena, Dornburger Straße 159, D-07743, Jena, Germany.,Terrestrial Ecology Research Group, Department of Ecology and Ecosystem Management, Center for Food and Life Sciences Weihenstephan, Technische Universität München, Hans-Carl-von-Carlowitz-Platz 2, 85354, Freising, Germany
| | - Michael Werner
- Department of Animal Ecology and Tropical Biology, Biocentre, University of Würzburg, Am Hubland, 97974, Würzburg, Germany
| | - Catrin Westphal
- Agroecology, Department of Crop Sciences, Georg-August-University Göttingen, Grisebachstr. 6, 37077, Göttingen, Germany
| | - Wolfgang Wilcke
- Geographic Institute, University of Bern, Hallerstrasse 12, 3012, Bern, Switzerland.,Institute of Geography and Geoecology, Karlsruhe Institute of Technology (KIT), Reinhard-Baumeister-Platz 1, 76131, Karlsruhe, Germany
| | - Markus Fischer
- Institute of Plant Sciences, University of Bern, Altenbergrain 21, 3013, Bern, Switzerland.,Senckenberg Gesellschaft für Naturforschung, Biodiversity and Climate Research Centre BIK-F, Senckenberganlage 25, 60325, Frankfurt, Germany.,Biodiversity Research/Systematic Botany, University of Potsdam, Maulbeerallee 1, D-14469, Potsdam, Germany
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13
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Winfree R, Fox JW, Williams NM, Reilly JR, Cariveau DP. Abundance of common species, not species richness, drives delivery of a real-world ecosystem service. Ecol Lett 2015; 18:626-35. [PMID: 25959973 DOI: 10.1111/ele.12424] [Citation(s) in RCA: 258] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 10/24/2014] [Accepted: 01/30/2015] [Indexed: 10/23/2022]
Abstract
Biodiversity-ecosystem functioning experiments have established that species richness and composition are both important determinants of ecosystem function in an experimental context. Determining whether this result holds for real-world ecosystem services has remained elusive, however, largely due to the lack of analytical methods appropriate for large-scale, associational data. Here, we use a novel analytical approach, the Price equation, to partition the contribution to ecosystem services made by species richness, composition and abundance in four large-scale data sets on crop pollination by native bees. We found that abundance fluctuations of dominant species drove ecosystem service delivery, whereas richness changes were relatively unimportant because they primarily involved rare species that contributed little to function. Thus, the mechanism behind our results was the skewed species-abundance distribution. Our finding that a few common species, not species richness, drive ecosystem service delivery could have broad generality given the ubiquity of skewed species-abundance distributions in nature.
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Affiliation(s)
- Rachael Winfree
- Department of Ecology, Evolution and Natural Resources, Rutgers University, New Brunswick, NJ, USA
| | - Jeremy W Fox
- Department of Biological Sciences, University of Calgary, Calgary, Canada
| | - Neal M Williams
- Department of Entomology and Nematology, University of California, Davis, CA, USA
| | - James R Reilly
- Department of Ecology, Evolution and Natural Resources, Rutgers University, New Brunswick, NJ, USA
| | - Daniel P Cariveau
- Department of Ecology, Evolution and Natural Resources, Rutgers University, New Brunswick, NJ, USA
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