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Cantwell-Jones A, Tylianakis JM, Larson K, Gill RJ. Using individual-based trait frequency distributions to forecast plant-pollinator network responses to environmental change. Ecol Lett 2024; 27:e14368. [PMID: 38247047 DOI: 10.1111/ele.14368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 01/02/2024] [Accepted: 01/04/2024] [Indexed: 01/23/2024]
Abstract
Determining how and why organisms interact is fundamental to understanding ecosystem responses to future environmental change. To assess the impact on plant-pollinator interactions, recent studies have examined how the effects of environmental change on individual interactions accumulate to generate species-level responses. Here, we review recent developments in using plant-pollinator networks of interacting individuals along with their functional traits, where individuals are nested within species nodes. We highlight how these individual-level, trait-based networks connect intraspecific trait variation (as frequency distributions of multiple traits) with dynamic responses within plant-pollinator communities. This approach can better explain interaction plasticity, and changes to interaction probabilities and network structure over spatiotemporal or other environmental gradients. We argue that only through appreciating such trait-based interaction plasticity can we accurately forecast the potential vulnerability of interactions to future environmental change. We follow this with general guidance on how future studies can collect and analyse high-resolution interaction and trait data, with the hope of improving predictions of future plant-pollinator network responses for targeted and effective conservation.
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Affiliation(s)
- Aoife Cantwell-Jones
- Georgina Mace Centre for The Living Planet, Department of Life Sciences, Silwood Park, Imperial College London, Ascot, UK
| | - Jason M Tylianakis
- Georgina Mace Centre for The Living Planet, Department of Life Sciences, Silwood Park, Imperial College London, Ascot, UK
- Bioprotection Aotearoa, School of Biological Sciences, Private Bag 4800, University of Canterbury, Christchurch, New Zealand
| | - Keith Larson
- Climate Impacts Research Centre, Department of Ecology and Environmental Sciences, Umeå University, Umeå, Sweden
| | - Richard J Gill
- Georgina Mace Centre for The Living Planet, Department of Life Sciences, Silwood Park, Imperial College London, Ascot, UK
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Patelli A, Napolitano L, Cimini G, Pugliese E, Gabrielli A. Capability accumulation patterns across economic, innovation, and knowledge-production activities. Sci Rep 2023; 13:12988. [PMID: 37563177 PMCID: PMC10415385 DOI: 10.1038/s41598-023-29979-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 02/14/2023] [Indexed: 08/12/2023] Open
Abstract
The evolution of economic and innovation systems at the national scale is shaped by a complex dynamics related to the multi-layer network connecting countries to the activities in which they are proficient. Each layer represents a different domain, related to the production of knowledge and goods: scientific research, technology innovation, industrial production and trade. Nestedness, a footprint of a complex dynamics, emerges as a persistent feature across these multiple kinds of activities (i.e. network layers). We observe that, in the layers of innovation and trade, the competitiveness of countries correlates unambiguously with their diversification, while the science layer shows some peculiar features. The evolution of the scientific domain leads to an increasingly modular structure, in which the most developed countries become relatively less active in the less advanced scientific fields, where emerging countries acquire prominence. This observation is in line with a capability-based view of the evolution of economic systems, but with a slight twist. Indeed, while the accumulation of specific know-how and skills is a fundamental step towards development, resource constraints force countries to acquire competitiveness in the more complex research fields at the expense of more basic, albeit less visible (or more crowded) ones. This tendency towards a relatively specialized basket of capabilities leads to a trade-off between the need to diversify in order to evolve and the need to allocate resources efficiently. Collaborative patterns among developed countries reduce the necessity to be competitive in the less sophisticated research fields, freeing resources for the more complex ones.
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Affiliation(s)
| | - Lorenzo Napolitano
- European Commission, Joint Research Centre (JRC-Seville), Seville, Spain.
| | - Giulio Cimini
- Enrico Fermi Research Center, Rome, Italy
- Physics Department and INFN, University of Rome Tor Vergata, Rome, Italy
| | - Emanuele Pugliese
- European Commission, Joint Research Centre (JRC-Seville), Seville, Spain
| | - Andrea Gabrielli
- Enrico Fermi Research Center, Rome, Italy
- Department of Civil, Computer Science and Aeronautical Technologies Engineering, Università degli Studi "Roma Tre", Rome, Italy
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3
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Braun J, Lortie CJ. Drivers of plant individual-based pollinator visitation network topology in an arid ecosystem. ECOLOGICAL COMPLEXITY 2022. [DOI: 10.1016/j.ecocom.2022.101003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Lv ZY, Yusupov Z, Zhang DG, Zhang YZ, Zhang XS, Lin N, Tojibaev K, Sun H, Deng T. Oreocharis xieyongii, an unusual new species of Gesneriaceae from western Hunan, China. PLANT DIVERSITY 2022; 44:222-230. [PMID: 35505983 PMCID: PMC9043400 DOI: 10.1016/j.pld.2021.11.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 11/28/2021] [Accepted: 11/29/2021] [Indexed: 06/14/2023]
Abstract
A new species, Oreocharis xieyongii T. Deng, D.G. Zhang & H. Sun, from Hunan Province, central China, is described. The combination of purple zygomorphic corolla with longer adaxial lobes and exserted stamens defines the species and discriminates it from all other current Oreocharis species. Morphological traits of the new species were compared to those of two similar species, Oreocharis xiangguiensis and O. rubrostriata. Phylogenetic analysis indicates that the new species is nested within the Oreocharis. Although only half of Oreocharis species were included in our study, evolutionary character analysis indicates that the ancestral states of the genus are likely the purple corolla, longer abaxial lip and inserted stamens. The longer adaxial lip is perhaps an apomorphy and only present in O. xieyongii and O. rubrostriata. Both morphological and molecular evidence suggest that O. xieyongii is a taxon new to science.
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Affiliation(s)
- Zhen-Yu Lv
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, Yunnan, China
- School of Life Sciences, Yunnan Normal University, Kunming 650500, Yunnan, China
| | - Ziyoviddin Yusupov
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, Yunnan, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Institute of Botany, Academy of Sciences of Uzbekistan, Tashkent 100053, Uzbekistan
| | - Dai-Gui Zhang
- Key Laboratory of Plant Resources Conservation and Utilization, Jishou University, Jishou 416000, Hunan, China
| | - Ya-Zhou Zhang
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, Yunnan, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiao-Shuang Zhang
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, Yunnan, China
- Key Laboratory of Plant Resources Conservation and Utilization, Jishou University, Jishou 416000, Hunan, China
| | - Nan Lin
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, Yunnan, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Komiljon Tojibaev
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, Yunnan, China
- Institute of Botany, Academy of Sciences of Uzbekistan, Tashkent 100053, Uzbekistan
| | - Hang Sun
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, Yunnan, China
| | - Tao Deng
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, Yunnan, China
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da Silva AR, Rodrigues GF, Paluski GB, Vieira NR, Gregati RA. Downscaling hermit crab-gastropod network to demographic groups unveils recurrent patterns. ETHOL ECOL EVOL 2022. [DOI: 10.1080/03949370.2021.1989052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Alexandre R. da Silva
- NEBECC (Núcleo de Estudos em Biologia, Ecologia e Cultivo de Crustáceos), Departamento de Zoologia, Instituto de Biociências de Botucatu, Universidade Estadual Paulista (UNESP), Botucatu, Brazil
| | - Gabriel F.B. Rodrigues
- NEBECC (Núcleo de Estudos em Biologia, Ecologia e Cultivo de Crustáceos), Departamento de Zoologia, Instituto de Biociências de Botucatu, Universidade Estadual Paulista (UNESP), Botucatu, Brazil
| | - Geovana Bastos Paluski
- Laboratório de Biologia Aquática, Universidade Estadual do Centro-Oeste (UNICENTRO), Guarapuava, Brazil
| | - Neida Rodrigues Vieira
- Laboratório de Biologia Aquática, Universidade Estadual do Centro-Oeste (UNICENTRO), Guarapuava, Brazil
| | - Rafael A. Gregati
- Laboratório de Biologia Aquática, Universidade Estadual do Centro-Oeste (UNICENTRO), Guarapuava, Brazil
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Friedemann P, Côrtes MC, de Castro ER, Galetti M, Jordano P, Guimarães Jr PR. The individual‐based network structure of palm‐seed dispersers is explained by a rainforest gradient. OIKOS 2021. [DOI: 10.1111/oik.08384] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pâmela Friedemann
- Depto de Ecologia, Inst. de Biociências, Univ. de São Paulo São Paulo Brazil
| | - Marina Corrêa Côrtes
- Depto de Biodiversidade, Inst. de Biociências, Univ. Estadual Paulista (UNESP) São Paulo Brazil
| | | | - Mauro Galetti
- Depto de Biodiversidade, Inst. de Biociências, Univ. Estadual Paulista (UNESP) São Paulo Brazil
- Dept of Biology, Univ. of Miami Coral Gables FL USA
| | - Pedro Jordano
- Estación Biológica de Doñana, Consejo Superior de Investigaciones Científicas (EBD‐CSIC) Seville Spain
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Llaberia-Robledillo M, Balbuena JA, Sarabeev V, Llopis-Belenguer C. Changes in native and introduced host–parasite networks. Biol Invasions 2021. [DOI: 10.1007/s10530-021-02657-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AbstractIntroduced species can alter the dynamics and structure of a native community. Network analysis provides a tool to study host–parasite interactions that can help to predict the possible impact of biological invasions or other disturbances. In this study, we used weighted bipartite networks to assess differences in the interaction patterns between hosts and helminth parasites of native (Sea of Japan) and invasive (Black Sea and Sea of Azov) populations of Planiliza haematocheilus (Teleostei: Mugilidae). We employed three quantitative network descriptors, connectance, weighted nestedness and modularity, to gain insight into the structure of the host–parasite networks in the native and invaded areas. The role of parasite species in the networks was assessed using the betweenness centrality index. We analyzed networks encompassing the whole helminth community and subsets of species classified by their transmission strategy. The analyses were downscaled to host individual-level to consider intraspecific variation in parasite communities. We found significant differences between networks in the native and invaded areas. The latter presented a higher value of nestedness, which may indicate a co-occurrence between parasite species with many connections in the network and species with fewer interactions within the same individual-host. In addition, modularity was higher in the native area’s networks than those of the invaded area, with subgroups of host individuals that interact more frequently with certain parasite species than with others. Only the networks composed of actively transmitted parasites and ectoparasites did not show significant differences in modularity between the Sea of Azov and the Sea of Japan, which could be due to the introduction of a part of the native community into the invaded environment, with a lower diversity and abundance of species. We show that network analysis provides a valuable tool to illuminate the changes that occur in host–parasite interactions when an invasive species and its parasite community are introduced into a new area.
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Silva AR, Rodrigues GFB, Borthagaray AI, Costa RC, Castilho AL. Morphometric traits as drivers for module structures and species specialization: a study about the hermit crab–gastropod networks from three different regions on the Brazilian coast. J Zool (1987) 2021. [DOI: 10.1111/jzo.12935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A. R. Silva
- NEBECC (Núcleo de Estudos em Biologia, Ecologia e Cultivo de Crustáceos) Departamento de Zoologia Instituto de Biociências de Botucatu Universidade Estadual Paulista (UNESP) Botucatu Brasil
| | - G. F. B. Rodrigues
- NEBECC (Núcleo de Estudos em Biologia, Ecologia e Cultivo de Crustáceos) Departamento de Zoologia Instituto de Biociências de Botucatu Universidade Estadual Paulista (UNESP) Botucatu Brasil
| | - A. I. Borthagaray
- Departamento de Ecología y Gestión Ambiental Centro Universitario Regional Este (CURE) Universidad de la República Maldonado Uruguay
| | - R. C. Costa
- Laboratório de Biologia de Camarões Marinhos e de Água Doce (LABCAM) Departamento de Ciências Biológicas Faculdade de Ciências Universidade Estadual Paulista (UNESP) Bauru Brasil
| | - A. L. Castilho
- NEBECC (Núcleo de Estudos em Biologia, Ecologia e Cultivo de Crustáceos) Departamento de Zoologia Instituto de Biociências de Botucatu Universidade Estadual Paulista (UNESP) Botucatu Brasil
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Hinton CR, Peters VE. Plant species with the trait of continuous flowering do not hold core roles in a Neotropical lowland plant-pollinating insect network. Ecol Evol 2021; 11:2346-2359. [PMID: 33717460 PMCID: PMC7920781 DOI: 10.1002/ece3.7203] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 12/15/2020] [Accepted: 12/21/2020] [Indexed: 11/12/2022] Open
Abstract
Plant-animal interaction science repeatedly finds that plant species differ by orders of magnitude in the number of interactions they support. The identification of plant species that play key structural roles in plant-animal networks is a global conservation priority; however, in hyperdiverse systems such as tropical forests, empirical datasets are scarce. Plant species with longer reproductive seasons are posited to support more interactions compared to plant species with shorter reproductive seasons but this hypothesis has not been evaluated for plant species with the longest reproductive season possible at the individual plant level, the continuous reproductive phenology. Resource predictability is also associated with promoting specialization, and therefore, continuous reproduction may instead favor specialist interactions. Here, we use quantitative pollinating insect-plant networks constructed from countryside habitat of the Tropical Wet forest Life Zone and modularity analysis to test whether plant species that share the trait of continuous flowering hold core roles in mutualistic networks. With a few exceptions, most plant species sampled within our network were assigned to the role of peripheral. All but one network had significantly high modularity scores and each continuous flowering plant species was in a different module. Our work reveals that the continuous flowering plant species differed in some networks in their topological role, and that more evidence was found for the phenology to support specialized subsets of interactions. Our findings suggest that the conservation of Neotropical pollinating insect communities may require planting species from each module rather than identifying and conserving network hubs.
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Affiliation(s)
- Chelsea R. Hinton
- Department of Biological SciencesEastern Kentucky UniversityRichmondKYUSA
| | - Valerie E. Peters
- Department of Biological SciencesEastern Kentucky UniversityRichmondKYUSA
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Nikkeshi A, Hiraiwa MK, Ushimaru A, Hoshizaki K, Makita A, Mizuki I. Evaluation of sampling effort required to assess pollen species richness on pollinators using rarefaction. APPLICATIONS IN PLANT SCIENCES 2021; 9:e11411. [PMID: 33680582 PMCID: PMC7910805 DOI: 10.1002/aps3.11411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 12/30/2020] [Indexed: 06/12/2023]
Abstract
PREMISE Understanding the flower visitation history of individual pollinators is key in the study of pollination networks, but direct tracking is labor intensive and, more important, does not capture information about the previous interactions of an individual. Therefore, a protocol to detect most of the pollen species on the body surfaces of an individual pollinator could elucidate its flower visitation history. METHODS AND RESULTS Under a microscope, we observed 6.0-µL droplets from a sample solution (1.0 or 3.0 mL) containing pollen grains collected from individuals of six major pollinator functional groups. To clarify how many droplets need to be observed to detect all pollen species within the solution, we examined up to 10 droplets collected from each individual insect. Sample-based rarefaction curve analyses of the data showed that we could detect ~90% of the pollen species and the plant-pollinator links in the networks by observing six droplets. CONCLUSIONS The rarefaction curve analysis for pollen-on-pollinator studies is a useful preliminary step for minimizing the time and labor required while maximizing the data on the flower visitation history of each individual pollinator and revealing any hidden flower-pollinator interactions.
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Affiliation(s)
- Aoi Nikkeshi
- Division of BiodiversityInstitute for Agro‐environmental ScienceNARO3‐1‐3, KannondaiTsukubaIbaraki305‐8604Japan
- Department of Biological Environment, Faculty of Bioresource SciencesAkita Prefectural UniversityShimoshinjo‐NakanoAkita010‐0195Japan
| | - Masayoshi K. Hiraiwa
- Graduate School of Human Development and EnvironmentKobe UniversityKobeHyogo657‐8501Japan
| | - Atushi Ushimaru
- Graduate School of Human Development and EnvironmentKobe UniversityKobeHyogo657‐8501Japan
| | - Kazuhiko Hoshizaki
- Department of Biological Environment, Faculty of Bioresource SciencesAkita Prefectural UniversityShimoshinjo‐NakanoAkita010‐0195Japan
| | - Akifumi Makita
- Department of Biological Environment, Faculty of Bioresource SciencesAkita Prefectural UniversityShimoshinjo‐NakanoAkita010‐0195Japan
| | - Inoue Mizuki
- Department of BiosciencesCollege of Humanities and SciencesNihon University3‐25‐40 SakurajousuiSetagaya‐kuTokyo156‐8550Japan
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Soares NC, Maruyama PK, Staggemeier VG, Morellato LPC, Araújo MS. The role of individual variation in flowering and pollination in the reproductive success of a crepuscular buzz-pollinated plant. ANNALS OF BOTANY 2021; 127:213-222. [PMID: 32914162 PMCID: PMC7789112 DOI: 10.1093/aob/mcaa163] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Accepted: 09/05/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND AND AIMS Plant individuals within a population differ in their phenology and interactions with pollinators. However, it is still unknown how individual differences affect the reproductive success of plants that have functionally specialized pollination systems. Here, we evaluated whether plant individual specialization in phenology (temporal specialization) and in pollination (pollinator specialization) affect the reproductive success of the crepuscular-bee-pollinated plant Trembleya laniflora (Melastomataceae). METHODS We quantified flowering activity (amplitude, duration and overlap), plant-pollinator interactions (number of flowers visited by pollinators) and reproductive success (fruit set) of T. laniflora individuals from three distinct locations in rupestrian grasslands of southeastern Brazil. We estimated the degree of individual temporal specialization in flowering phenology and of individual specialization in plant-pollinator interactions, and tested their relationship with plant reproductive success. KEY RESULTS Trembleya laniflora presented overlapping flowering, a temporal generalization and specialized pollinator interactions. Flowering overlap among individuals and populations was higher than expected by chance but did not affect the individual interactions with pollinators and nor their reproductive success. In contrast, higher individual generalization in the interactions with pollinators was related to higher individual reproductive success. CONCLUSIONS Our findings suggest that individual generalization in plant-pollinator interaction reduces the potential costs of specialization at the species level, ensuring reproductive success. Altogether, our results highlight the complexity of specialization/generalization of plant-pollinator interactions at distinct levels of organization, from individuals to populations, to species.
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Affiliation(s)
- Natalia Costa Soares
- Laboratório de Fenologia, Departamento de Biodiversidade, Instituto de Biociências, Universidade Estadual Paulista, Rio Claro, SP, Brazil
| | - Pietro Kiyoshi Maruyama
- Centro de Síntese Ecológica e Conservação, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Vanessa Graziele Staggemeier
- Laboratório de Fenologia, Departamento de Biodiversidade, Instituto de Biociências, Universidade Estadual Paulista, Rio Claro, SP, Brazil
- Departamento de Ecologia, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil
| | - Leonor Patrícia Cerdeira Morellato
- Laboratório de Fenologia, Departamento de Biodiversidade, Instituto de Biociências, Universidade Estadual Paulista, Rio Claro, SP, Brazil
| | - Márcio Silva Araújo
- Departamento de Biodiversidade, Instituto de Biociências, Universidade Estadual Paulista, Rio Claro, SP, Brazil
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Guimarães PR. The Structure of Ecological Networks Across Levels of Organization. ANNUAL REVIEW OF ECOLOGY EVOLUTION AND SYSTEMATICS 2020. [DOI: 10.1146/annurev-ecolsys-012220-120819] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Interactions connect the units of ecological systems, forming networks. Individual-based networks characterize variation in niches among individuals within populations. These individual-based networks merge with each other, forming species-based networks and food webs that describe the architecture of ecological communities. Networks at broader spatiotemporal scales portray the structure of ecological interactions across landscapes and over macroevolutionary time. Here, I review the patterns observed in ecological networks across multiple levels of biological organization. A fundamental challenge is to understand the amount of interdependence as we move from individual-based networks to species-based networks and beyond. Despite the uneven distribution of studies, regularities in network structure emerge across scales due to the fundamental architectural patterns shared by complex networks and the interplay between traits and numerical effects. I illustrate the integration of these organizational scales by exploring the consequences of the emergence of highly connected species for network structures across scales.
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Affiliation(s)
- Paulo R. Guimarães
- Departamento de Ecologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, 05508-090, Brazil
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de Manincor N, Hautekèete N, Mazoyer C, Moreau P, Piquot Y, Schatz B, Schmitt E, Zélazny M, Massol F. How biased is our perception of plant-pollinator networks? A comparison of visit- and pollen-based representations of the same networks. ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY 2020. [DOI: 10.1016/j.actao.2020.103551] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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de Oliveira Lima G, Leite AV, Souza CS, Castro CC, de Santana Bezerra EL. A multilayer network in an herbaceous tropical community reveals multiple roles of floral visitors. OIKOS 2020. [DOI: 10.1111/oik.06565] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Geiza de Oliveira Lima
- Programa de Pós‐graduação em Botânica, Depto de Biologia, Univ. Federal Rural de Pernambuco Recife Pernambuco Brazil
| | - Ana Virgínia Leite
- Programa de Pós‐graduação em Botânica, Depto de Biologia, Univ. Federal Rural de Pernambuco Recife Pernambuco Brazil
| | - Camila Silveira Souza
- Campus Centro Politécnico, Depto de Botânica, Programa de Pós‐Graduação em Botânica, Univ. Federal do Paraná Curitiba Paraná Brazil
| | - Cibele Cardoso Castro
- Unidade Acadêmica de Garanhuns, Univ. Federal Rural de Pernambuco Avenida Bom Pastor s/n Garanhuns Pernambuco 55292‐272 Brazil
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Jácome‐Flores ME, Jordano P, Delibes M, Fedriani JM. Interaction motifs variability in a Mediterranean palm under environmental disturbances: the mutualism–antagonism continuum. OIKOS 2019. [DOI: 10.1111/oik.06688] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Miguel E. Jácome‐Flores
- Estación Biológica de Doñana (EBD‐CSIC) Avenida Américo Vespucio 26, Isla de la Cartuja ES‐41092 Sevilla Spain
- Cátedras‐CONACyT, Centro de Cambio Global y Sustentabilidad, c/Centenario del Instituto Juárez s/n Villahermosa Tabasco Mexico
| | - Pedro Jordano
- Estación Biológica de Doñana (EBD‐CSIC) Avenida Américo Vespucio 26, Isla de la Cartuja ES‐41092 Sevilla Spain
| | - Miguel Delibes
- Dept of Conservation Biology, Estación Biológica de Doñana (EBD‐CSIC) Seville Spain
| | - Jose M. Fedriani
- Dept of Conservation Biology, Estación Biológica de Doñana (EBD‐CSIC) Seville Spain
- Centre for Applied Ecology ‘Prof. Baeta Neves’/InBio, Univ. of Lisbon Lisbon Portugal
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Foraging strategies are maintained despite workforce reduction: A multidisciplinary survey on the pollen collected by a social pollinator. PLoS One 2019; 14:e0224037. [PMID: 31693676 PMCID: PMC6834249 DOI: 10.1371/journal.pone.0224037] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 10/03/2019] [Indexed: 01/13/2023] Open
Abstract
The way pollinators gather resources may play a key role for buffering their population declines. Social pollinators like bumblebees could adjust their foraging after significant workforce reductions to keep provisions to the colony optimal, especially in terms of pollen diversity and quantity. To test what effects a workforce reduction causes on the foraging for pollen, commercially-acquired colonies of the bumblebee Bombus terrestris were allowed to forage in the field and they were experimentally manipulated by removing half the number of workers. For each bumblebee, the pollen pellets were taxonomically identified with DNA metabarcoding of the ITS2 region followed by a statistical filtering based on ROC curves to filter out underrepresented OTUs. Video cameras and network analyses were employed to investigate changes in foraging strategies and behaviour. After filtering out the false-positives, HTS metabarcoding yielded a high plant diversity in the pollen pellets; for plant identity and pollen quantity traits no differences emerged between samples from treated and from control colonies, suggesting that plant choice was influenced mainly by external factors such as the plant phenology. The colonies responded to the removal of 50% of their workers by increasing the foraging activity of the remaining workers, while only negligible changes were found in diet breadth and indices describing the structure of the pollen transport network. Therefore, a consistency in the bumblebees’ feeding strategies emerges in the short term despite the lowered workforce.
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Canavero A, Arim M, Pérez F, Jaksic FM, Marquet PA. Phenological modularity in amphibian calling behaviour: Geographic trends and local determinants. AUSTRAL ECOL 2019. [DOI: 10.1111/aec.12819] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Andrés Canavero
- Center of Applied Ecology and Sustainability (CAPES); Santiago Chile
- Departamento de Ecología y Gestión Ambiental; Centro Universitario Regional del Este (CURE); Universidad de la República; Tacuarembó s/n Maldonado Uruguay
| | - Matías Arim
- Departamento de Ecología y Gestión Ambiental; Centro Universitario Regional del Este (CURE); Universidad de la República; Tacuarembó s/n Maldonado Uruguay
| | - Fernanda Pérez
- Departamento de Ecología; Facultad de Ciencias Biológicas; Pontificia Universidad Católica de Chile; Santiago Chile
| | - Fabian M. Jaksic
- Center of Applied Ecology and Sustainability (CAPES); Santiago Chile
- Departamento de Ecología; Facultad de Ciencias Biológicas; Pontificia Universidad Católica de Chile; Santiago Chile
| | - Pablo A. Marquet
- Departamento de Ecología; Facultad de Ciencias Biológicas; Pontificia Universidad Católica de Chile; Santiago Chile
- Instituto de Ecología y Biodiversidad (IEB); Santiago Chile
- The Santa Fe Institute; Santa Fe New Mexico USA
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18
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Pasquaretta C, Jeanson R, Pansanel J, Raine NE, Chittka L, Lihoreau M. A spatial network analysis of resource partitioning between bumblebees foraging on artificial flowers in a flight cage. MOVEMENT ECOLOGY 2019; 7:4. [PMID: 30828455 PMCID: PMC6383269 DOI: 10.1186/s40462-019-0150-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 02/01/2019] [Indexed: 05/21/2023]
Abstract
BACKGROUND Individual bees exhibit complex movement patterns to efficiently exploit small areas within larger plant populations. How such individual spatial behaviours scale up to the collective level, when several foragers visit a common area, has remained challenging to investigate, both because of the low resolution of field movement data and the limited power of the statistical descriptors to analyse them. To tackle these issues we video recorded all flower visits (N = 6205), and every interaction on flowers (N = 628), involving foragers from a bumblebee (Bombus terrestris) colony in a large outdoor flight cage (880 m2), containing ten artificial flowers, collected on five consecutive days, and analysed bee movements using networks statistics. RESULTS Bee-flower visitation networks were significantly more modular than expected by chance, indicating that foragers minimized overlaps in their patterns of flower visits. Resource partitioning emerged from differences in foraging experience among bees, and from outcomes of their interactions on flowers. Less experienced foragers showed lower activity and were more faithful to some flowers, whereas more experienced foragers explored the flower array more extensively. Furthermore, bees avoided returning to flowers from which they had recently been displaced by a nestmate, suggesting that bees integrate memories of past interactions into their foraging decisions. CONCLUSION Our observations, under high levels of competition in a flight cage, suggest that the continuous turnover of foragers observed in colonies can led to efficient resource partitioning among bees in natural conditions.
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Affiliation(s)
- Cristian Pasquaretta
- Research Center on Animal Cognition (CRCA), Center for Integrative Biology (CBI); CNRS, University Paul Sabatier, Toulouse, France
| | - Raphael Jeanson
- Research Center on Animal Cognition (CRCA), Center for Integrative Biology (CBI); CNRS, University Paul Sabatier, Toulouse, France
| | - Jerome Pansanel
- Institut Pluridisciplinaire Hubert Curien, CNRS, Strasbourg, France
| | - Nigel E. Raine
- School of Biological Sciences, Royal Holloway University of London, Egham, TW20 0EX UK
- School of Environmental Sciences, University of Guelph, Guelph, Ontario N1G 2W1 Canada
| | - Lars Chittka
- Department of Biological and Experimental Psychology, School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London, E1 4NS UK
- Wissenschaftskolleg, Institute for Advanced Study, Wallotstrasse 19, 14193 Berlin, Germany
| | - Mathieu Lihoreau
- Research Center on Animal Cognition (CRCA), Center for Integrative Biology (CBI); CNRS, University Paul Sabatier, Toulouse, France
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19
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Zhao Y, Lázaro A, Ren Z, Zhou W, Li H, Tao Z, Xu K, Wu Z, Wolfe LM, Li D, Wang H. The topological differences between visitation and pollen transport networks: a comparison in species rich communities of the Himalaya–Hengduan Mountains. OIKOS 2018. [DOI: 10.1111/oik.05262] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Yan‐Hui Zhao
- Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Inst. of Botany, Chinese Academy of Sciences CN‐650201 Kunming PR China
| | - Amparo Lázaro
- Mediterranean Inst. For Advanced Studies Esporles Spain
| | - Zong‐Xin Ren
- Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Inst. of Botany, Chinese Academy of Sciences CN‐650201 Kunming PR China
| | - Wei Zhou
- Germplasm Bank of Wild Species Kunming Inst. of Botany, Chinese Academy of Sciences Kunming PR China
| | - Hai‐Dong Li
- Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Inst. of Botany, Chinese Academy of Sciences CN‐650201 Kunming PR China
| | - Zhi‐Bin Tao
- Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Inst. of Botany, Chinese Academy of Sciences CN‐650201 Kunming PR China
- Kunming College of Life Sciences Univ. of Chinese Academy of Sciences Kunming PR China
| | - Kun Xu
- Lijiang Forest Ecosystem Research Station Kunming Inst. of Botany, Chinese Academy of Sciences Kunming PR China
| | - Zhi‐Kun Wu
- Lijiang Forest Ecosystem Research Station Kunming Inst. of Botany, Chinese Academy of Sciences Kunming PR China
| | - Lorne M. Wolfe
- Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Inst. of Botany, Chinese Academy of Sciences CN‐650201 Kunming PR China
| | - De‐Zhu Li
- Germplasm Bank of Wild Species Kunming Inst. of Botany, Chinese Academy of Sciences Kunming PR China
| | - Hong Wang
- Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Inst. of Botany, Chinese Academy of Sciences CN‐650201 Kunming PR China
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20
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Rumeu B, Sheath DJ, Hawes JE, Ings TC. Zooming into plant-flower visitor networks: an individual trait-based approach. PeerJ 2018; 6:e5618. [PMID: 30245938 PMCID: PMC6147118 DOI: 10.7717/peerj.5618] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 08/20/2018] [Indexed: 11/20/2022] Open
Abstract
Understanding how ecological communities are structured is a major goal in ecology. Ecological networks representing interaction patterns among species have become a powerful tool to capture the mechanisms underlying plant-animal assemblages. However, these networks largely do not account for inter-individual variability and thus may be limiting our development of a clear mechanistic understanding of community structure. In this study, we develop a new individual-trait based approach to examine the importance of individual plant and pollinator functional size traits (pollinator thorax width and plant nectar holder depth) in mutualistic networks. We performed hierarchical cluster analyses to group interacting individuals into classes, according to their similarity in functional size. We then compared the structure of bee-flower networks where nodes represented either species identity or trait sets. The individual trait-based network was almost twice as nested as its species-based equivalent and it had a more symmetric linkage pattern resulting from of a high degree of size-matching. In conclusion, we show that by constructing individual trait-based networks we can reveal important patterns otherwise difficult to observe in species-based networks and thus improve our understanding of community structure. We therefore recommend using both trait-based and species-based approaches together to develop a clearer understanding of the properties of ecological networks.
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Affiliation(s)
- Beatriz Rumeu
- Applied Ecology Research Group, Department of Biology, Anglia Ruskin University, Cambridge, United Kingdom.,Terrestrial Ecology Group, Mediterranean Institute of Advanced Studies (CSIC-UIB), Mallorca, Balearic Islands, Spain
| | - Danny J Sheath
- Institute of Global Health, Faculty of Medicine, University of Geneva, Geneva, Switzerland.,School of Biological and Chemical Sciences, Queen Mary University of London, London, United Kingdom
| | - Joseph E Hawes
- Applied Ecology Research Group, Department of Biology, Anglia Ruskin University, Cambridge, United Kingdom
| | - Thomas C Ings
- Applied Ecology Research Group, Department of Biology, Anglia Ruskin University, Cambridge, United Kingdom.,School of Biological and Chemical Sciences, Queen Mary University of London, London, United Kingdom
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21
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Phenology drives species interactions and modularity in a plant - flower visitor network. Sci Rep 2018; 8:9386. [PMID: 29925965 PMCID: PMC6010405 DOI: 10.1038/s41598-018-27725-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Accepted: 06/08/2018] [Indexed: 11/17/2022] Open
Abstract
Phenology is often identified as one of the main structural driving forces of plant – flower visitor networks. Nevertheless, we do not yet have a full understanding of the effects of phenology in basic network build up mechanisms such as ecological modularity. In this study, we aimed to identify the effect of within-season temporal variation of plant and flower visitor activity on the network structural conformation. Thus, we analysed the temporal dynamics of a plant – flower visitor network in two Mediterranean alpine communities during one complete flowering season. In our approach, we built quantitative interaction networks and studied the dynamics through temporal beta diversity of species, interaction changes and modularity analysis. Within-season dissimilarity in the identity of interactions was mainly caused by species replacement through time (species turnover). Temporal replacement of species and interactions clearly impacted modularity, to the extent that species phenology emerged as a strong determinant of modularity in our networks. From an applied perspective, our results highlight the importance of considering the temporal variation of species interactions throughout the flowering season and the requirement of making comprehensive temporal sampling when aiming to build functionally consistent interaction networks.
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22
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Miguel MF, Jordano P, Tabeni S, Campos CM. Context-dependency and anthropogenic effects on individual plant-frugivore networks. OIKOS 2018. [DOI: 10.1111/oik.04978] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- M. Florencia Miguel
- Inst. Argentino de Investigaciones de las Zonas Áridas (UNCuyo- Gobierno de Mendoza-CONICET); Av. A. Ruiz Leal s/n, Parque General San Martín CP 5500, CC 507 Mendoza Argentina
- Integrative Ecology Group; Estación Biológica de Doñana EBD-CSIC Sevilla Spain
| | - Pedro Jordano
- Integrative Ecology Group; Estación Biológica de Doñana EBD-CSIC Sevilla Spain
| | - Solana Tabeni
- Inst. Argentino de Investigaciones de las Zonas Áridas (UNCuyo- Gobierno de Mendoza-CONICET); Av. A. Ruiz Leal s/n, Parque General San Martín CP 5500, CC 507 Mendoza Argentina
| | - Claudia M. Campos
- Inst. Argentino de Investigaciones de las Zonas Áridas (UNCuyo- Gobierno de Mendoza-CONICET); Av. A. Ruiz Leal s/n, Parque General San Martín CP 5500, CC 507 Mendoza Argentina
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23
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Giménez-Benavides L, Escudero A, García-Camacho R, García-Fernández A, Iriondo JM, Lara-Romero C, Morente-López J. How does climate change affect regeneration of Mediterranean high-mountain plants? An integration and synthesis of current knowledge. PLANT BIOLOGY (STUTTGART, GERMANY) 2018; 20 Suppl 1:50-62. [PMID: 28985449 DOI: 10.1111/plb.12643] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 09/30/2017] [Indexed: 05/25/2023]
Abstract
Mediterranean mountains are extraordinarily diverse and hold a high proportion of endemic plants, but they are particularly vulnerable to climate change, and most species distribution models project drastic changes in community composition. Retrospective studies and long-term monitoring also highlight that Mediterranean high-mountain plants are suffering severe range contractions. The aim of this work is to review the current knowledge of climate change impacts on the process of plant regeneration by seed in Mediterranean high-mountain plants, by combining available information from observational and experimental studies. We also discuss some processes that may provide resilience against changing environmental conditions and suggest some research priorities for the future. With some exceptions, there is still little evidence of the direct effects of climate change on pollination and reproductive success of Mediterranean high-mountain plants, and most works are observational and/or centred only in the post-dispersal stages (germination and establishment). The great majority of studies agree that the characteristic summer drought and the extreme heatwaves, which are projected to be more intense in the future, are the most limiting factors for the regeneration process. However, there is an urgent need for studies combining elevational gradient approaches with experimental manipulations of temperature and drought to confirm the magnitude and variability of species' responses. There is also limited knowledge about the ability of Mediterranean high-mountain plants to cope with climate change through phenotypic plasticity and local adaptation processes. This could be achieved by performing common garden and reciprocal translocation experiments with species differing in life history traits.
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Affiliation(s)
- L Giménez-Benavides
- Department Biología y Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos-ESCET, C/Tulipán, Móstoles, Madrid, Spain
| | - A Escudero
- Department Biología y Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos-ESCET, C/Tulipán, Móstoles, Madrid, Spain
| | - R García-Camacho
- Department Biología y Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos-ESCET, C/Tulipán, Móstoles, Madrid, Spain
| | - A García-Fernández
- Department Biología y Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos-ESCET, C/Tulipán, Móstoles, Madrid, Spain
| | - J M Iriondo
- Department Biología y Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos-ESCET, C/Tulipán, Móstoles, Madrid, Spain
| | - C Lara-Romero
- Global Change Research Department, Mediterranean Institute of Advanced Studies (CSIC-UIB), Esporles, Mallorca, Balearic Islands, Spain
| | - J Morente-López
- Department Biología y Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos-ESCET, C/Tulipán, Móstoles, Madrid, Spain
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24
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Intraspecific variation in fruit-frugivore interactions: effects of fruiting neighborhood and consequences for seed dispersal. Oecologia 2017; 185:233-243. [PMID: 28875387 DOI: 10.1007/s00442-017-3943-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 08/27/2017] [Indexed: 10/18/2022]
Abstract
The extent of specialization/generalization continuum in fruit-frugivore interactions at the individual level remains poorly explored. Here, we investigated the interactions between the Neotropical treelet Miconia irwinii (Melastomataceae) and its avian seed dispersers in Brazilian campo rupestre. We built an individual-based network to derive plant degree of interaction specialization regarding disperser species. Then, we explored how intraspecific variation in interaction niche breadth relates to fruit availability on individual plants in varying densities of fruiting conspecific neighbors, and how these factors affect the quantity of viable seeds dispersed. We predicted broader interaction niche breadths for individuals with larger fruit crops in denser fruiting neighborhoods. The downscaled network included nine bird species and 15 plants, which varied nearly five-fold in their degree of interaction specialization. We found positive effects of crop size on visitation and fruit removal rates, but not on degree of interaction specialization. Conversely, we found that an increase in the density of conspecific fruiting neighbors both increased visitation rate and reduced plant degree of interaction specialization. We suggest that tracking fruit-rich patches by avian frugivore species is the main driver of density-dependent intraspecific variation in plants' interaction niche breadth. Our study shed some light on the overlooked fitness consequences of intraspecific variation in interaction niches by showing that individuals along the specialization/generalization continuum may have their seed dispersed with similar effectiveness. Our study exemplifies how individual-based networks linking plants to frugivore species that differ in their seed dispersal effectiveness can advance our understanding of intraspecific variation in the outcomes of fruit-frugivore interactions.
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25
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Fagundes R, Dáttilo W, Ribeiro SP, Rico-Gray V, Jordano P, Del-Claro K. Differences among ant species in plant protection are related to production of extrafloral nectar and degree of leaf herbivory. Biol J Linn Soc Lond 2017. [DOI: 10.1093/biolinnean/blx059] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- R Fagundes
- Instituto de Ciências Exatas e da Natureza, Universidade da Integração Internacional da Lusofonia Afro-Brasileira, Acarape, Ceará, Brasil
- Instituto de Biologia, Universidade Federal de Uberlândia, Uberlândia, Minas Gerais, Brasil
- Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brasil
| | - W Dáttilo
- Red de Ecoetologia, Instituto de Ecología A.C., Xalapa, Veracruz, México
| | - S P Ribeiro
- Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brasil
| | - V Rico-Gray
- Instituto de Neuroetologia, Univesidad Veracruzana, Xalapa, Veracruz, México
| | - P Jordano
- Estación Biológica de Doñana, EDB-CSIC, Sevilla, Spain
| | - K Del-Claro
- Instituto de Biologia, Universidade Federal de Uberlândia, Uberlândia, Minas Gerais, Brasil
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26
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Rodríguez-Rodríguez MC, Jordano P, Valido A. Functional consequences of plant-animal interactions along the mutualism-antagonism gradient. Ecology 2017; 98:1266-1276. [PMID: 28135774 DOI: 10.1002/ecy.1756] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 01/17/2017] [Accepted: 01/24/2017] [Indexed: 11/10/2022]
Abstract
Plant-animal interactions are pivotal for ecosystem functioning, and usually form complex networks involving multiple species of mutualists as well as antagonists. The costs and benefits of these interactions show a strong context-dependency directly related to individual variation in partner identity and differential strength. Yet understanding the context-dependency and functional consequences of mutualistic and antagonistic interactions on individuals remains a lasting challenge. We use a network approach to characterize the individual, plant-based pollination interaction networks of the Canarian Isoplexis canariensis (Plantaginaceae) with a mixed assemblage of vertebrate mutualists (birds and lizards) and invertebrate antagonists (florivores, nectar larcenists, and predispersal seed predators). We identify and quantify interaction typologies based on the sign (mutualistic vs. antagonistic) and strength (weak vs. strong) of animal-mediated pollination and test the relationship with individual female reproductive success (FRS). In addition, we document pollinator movement patterns among individual plants to infer events of pollen transfer/receipt that define the plant mating networks and test the relationship with FRS. We identify six interaction typologies along a mutualism-antagonism gradient, with two typologies being over-represented involving both mutualists and antagonists and influencing FRS. Plants showing strong mutualistic interactions, but also (weak or strong) interactions with antagonists are relatively better connected in the mating network (i.e., with higher potential to transfer or receive pollen). Thus, mixed flower visitor assemblages with mutualists and antagonists give plants increased their importance in the mating networks, promote outcrossing and increasing both female and male fitness. Our approach helps characterize plant-animal interaction typologies, the context-specificity of diversified mutualisms, and a better forecasting of their functional consequences.
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Affiliation(s)
- María C Rodríguez-Rodríguez
- Department of Integrative Ecology, Estación Biológica de Doñana (EBD-CSIC), C/Americo Vespucio 26, Isla de la Cartuja, 41092, Sevilla, Spain
| | - Pedro Jordano
- Department of Integrative Ecology, Estación Biológica de Doñana (EBD-CSIC), C/Americo Vespucio 26, Isla de la Cartuja, 41092, Sevilla, Spain
| | - Alfredo Valido
- Department of Integrative Ecology, Estación Biológica de Doñana (EBD-CSIC), C/Americo Vespucio 26, Isla de la Cartuja, 41092, Sevilla, Spain
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27
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Gegear RJ, Burns R, Swoboda-Bhattarai KA. “Hummingbird” floral traits interact synergistically to discourage visitation by bumble bee foragers. Ecology 2017; 98:489-499. [DOI: 10.1002/ecy.1661] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 11/01/2016] [Accepted: 11/07/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Robert J. Gegear
- Department of Biology and Biotechnology; Worcester Polytechnic Institute; Worcester Massachusetts 01609-2280 USA
| | - Rebecca Burns
- Department of Biology and Biotechnology; Worcester Polytechnic Institute; Worcester Massachusetts 01609-2280 USA
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28
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Genrich CM, Mello MAR, Silveira FAO, Bronstein JL, Paglia AP. Duality of interaction outcomes in a plant-frugivore multilayer network. OIKOS 2016. [DOI: 10.1111/oik.03825] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Christiane M. Genrich
- Depto de Biologia Geral; Univ. Federal de Minas Gerais; Avenida Antonio Carlos 6627 31270-901 Belo Horizonte Brazil
| | - Marco A. R. Mello
- Depto de Biologia Geral; Univ. Federal de Minas Gerais; Avenida Antonio Carlos 6627 31270-901 Belo Horizonte Brazil
| | - Fernando A. O. Silveira
- Depto de Botânica; Univ. Federal de Minas Gerais; Avenida Antonio Carlos 6627 31270-901 Belo Horizonte Brazil
| | | | - Adriano P. Paglia
- Depto de Biologia Geral; Univ. Federal de Minas Gerais; Avenida Antonio Carlos 6627 31270-901 Belo Horizonte Brazil
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29
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Modularity in ecological networks between frugivorous birds and congeneric plant species. JOURNAL OF TROPICAL ECOLOGY 2016. [DOI: 10.1017/s0266467416000444] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Abstract:Ecological and evolutionary factors influence the presence of modules in species interaction networks, and these modules usually cluster functional similar species. But whether closely related species form modules is still unknown. We tested whether the interaction networks formed by frugivorous birds and Miconia plants are modular and evaluated how modules were divided. To do so, we gathered from the literature data concerning four networks of Miconia and their frugivorous birds (three from Brazilian savanna and one from a rain forest in Panama). We quantified modularity using binary and weighted algorithms and also tested the relationship between bird traits (body mass, dietary specialization, migratory behaviour and phylogeny) in relation to within- and among-module connectivity indices (c and z values). If considering only binary information, networks did not present distinct modular structure. Nevertheless, by including interaction strength, modules can be detected in all four Miconia-bird networks. None of the bird traits, however, was related with the connectivity indices. The possible fluctuation of frugivorous bird abundance coupled with the asynchronic fruiting period of Miconia might favour the formation of temporal modules comprising birds and plant species with phenological overlap, ensuring seed dispersal and facilitating the coexistence in sympatry. Bird traits had little effect on the role that each species plays within the modular network, probably because the frugivorous assemblages were dominated by small-bodied and opportunistic species.
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30
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Kuppler J, Höfers MK, Wiesmann L, Junker RR. Time-invariant differences between plant individuals in interactions with arthropods correlate with intraspecific variation in plant phenology, morphology and floral scent. THE NEW PHYTOLOGIST 2016; 210:1357-68. [PMID: 26840542 DOI: 10.1111/nph.13858] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 12/09/2015] [Indexed: 05/10/2023]
Abstract
The basic units of ecological and evolutionary processes are individuals. Network studies aiming to infer mechanisms from complex systems, however, usually focus on interactions between species, not individuals. Accordingly, the structure and underlying mechanisms of individual-based interaction networks remain largely unknown. In a common garden, we recorded all interactions on flowers and leaves of 97 Sinapis arvensis individuals from seedling stage to fruit set and related interindividual differences in interactions to the plant individuals' phenotypes. The plant individuals significantly differed in their quantitative and qualitative interactions with arthropods on flowers and leaves. These differences remained stable over the entire season and thus were time-invariant. Variation in interacting arthropod communities could be explained by a pronounced intraspecific variability in flowering phenology, morphology and flower scent, and translated into variation in reproductive success. Interestingly, plant individuals with a similar composition of flower visitors were also visited by a similar assemblage of interaction partners at leaves. Our results show that the nonuniformity of plant species has pronounced effects in community ecology, potentially with implications for the persistence of communities and populations, and their ability to withstand environmental fluctuations.
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Affiliation(s)
- Jonas Kuppler
- Department Biology, Institute of Sensory Ecology, Heinrich-Heine-University, Universitätstrasse 1, Düsseldorf, 40225, Germany
- Department of Ecology and Evolution, University of Salzburg, Hellbrunnerstrasse 34, Salzburg, 5020, Austria
| | - Maren K Höfers
- Department Biology, Institute of Sensory Ecology, Heinrich-Heine-University, Universitätstrasse 1, Düsseldorf, 40225, Germany
- Department of Ecology and Evolution, University of Salzburg, Hellbrunnerstrasse 34, Salzburg, 5020, Austria
| | - Lisa Wiesmann
- Department of Ecology and Evolution, University of Salzburg, Hellbrunnerstrasse 34, Salzburg, 5020, Austria
| | - Robert R Junker
- Department of Ecology and Evolution, University of Salzburg, Hellbrunnerstrasse 34, Salzburg, 5020, Austria
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31
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Valverde J, Gómez JM, Perfectti F. The temporal dimension in individual-based plant pollination networks. OIKOS 2015. [DOI: 10.1111/oik.02661] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
| | - José Maria Gómez
- Dpto de Ecología; Univ. de Granada; ES-18071 Granada Spain
- Dpto de Ecología Funcional y Evolutiva; Estación Experimental de Zonas Áridas (EEZA-CSIC); ES-04120 Almería Spain
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A primer on the history of food web ecology: Fundamental contributions of fourteen researchers. FOOD WEBS 2015. [DOI: 10.1016/j.fooweb.2015.07.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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