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Mata-Guel EO, Soh MCK, Butler CW, Morris RJ, Razgour O, Peh KSH. Impacts of anthropogenic climate change on tropical montane forests: an appraisal of the evidence. Biol Rev Camb Philos Soc 2023; 98:1200-1224. [PMID: 36990691 DOI: 10.1111/brv.12950] [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: 09/29/2022] [Revised: 03/08/2023] [Accepted: 03/10/2023] [Indexed: 03/31/2023]
Abstract
In spite of their small global area and restricted distributions, tropical montane forests (TMFs) are biodiversity hotspots and important ecosystem services providers, but are also highly vulnerable to climate change. To protect and preserve these ecosystems better, it is crucial to inform the design and implementation of conservation policies with the best available scientific evidence, and to identify knowledge gaps and future research needs. We conducted a systematic review and an appraisal of evidence quality to assess the impacts of climate change on TMFs. We identified several skews and shortcomings. Experimental study designs with controls and long-term (≥10 years) data sets provide the most reliable evidence, but were rare and gave an incomplete understanding of climate change impacts on TMFs. Most studies were based on predictive modelling approaches, short-term (<10 years) and cross-sectional study designs. Although these methods provide moderate to circumstantial evidence, they can advance our understanding on climate change effects. Current evidence suggests that increasing temperatures and rising cloud levels have caused distributional shifts (mainly upslope) of montane biota, leading to alterations in biodiversity and ecological functions. Neotropical TMFs were the best studied, thus the knowledge derived there can serve as a proxy for climate change responses in under-studied regions elsewhere. Most studies focused on vascular plants, birds, amphibians and insects, with other taxonomic groups poorly represented. Most ecological studies were conducted at species or community levels, with a marked paucity of genetic studies, limiting understanding of the adaptive capacity of TMF biota. We thus highlight the long-term need to widen the methodological, thematic and geographical scope of studies on TMFs under climate change to address these uncertainties. In the short term, however, in-depth research in well-studied regions and advances in computer modelling approaches offer the most reliable sources of information for expeditious conservation action for these threatened forests.
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Affiliation(s)
- Erik O Mata-Guel
- School of Biological Sciences, University of Southampton, Highfield Campus, Southampton, SO17 1BJ, UK
| | - Malcolm C K Soh
- National Park Boards, 1 Cluny Road, Singapore, 259569, Singapore
| | - Connor W Butler
- School of Biological Sciences, University of Southampton, Highfield Campus, Southampton, SO17 1BJ, UK
| | - Rebecca J Morris
- School of Biological Sciences, University of Southampton, Highfield Campus, Southampton, SO17 1BJ, UK
| | - Orly Razgour
- Biosciences, University of Exeter, Exeter, EX4 4PS, UK
| | - Kelvin S-H Peh
- School of Biological Sciences, University of Southampton, Highfield Campus, Southampton, SO17 1BJ, UK
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Rivera CL, Padilla JF, Ospina Pérez EM, Urbano FM, Guarín DV, Mejía Fontecha IY, Ossa López PA, Rivera Páez FA, Ramírez-Chaves HE. Interaction Networks between Bats (Mammalia: Chiroptera) and Ectoparasitic Flies (Diptera: Hippoboscoidea) in the Colombian Orinoquia Region. ACTA CHIROPTEROLOGICA 2023. [DOI: 10.3161/15081109acc2022.24.2.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Camila López Rivera
- Grupo de Investigación GEBIOME, Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Caldas, Calle 65 No. 26-10, Apartado Aéreo 275, Manizales, Caldas, Colombia
| | - Juliana Florez Padilla
- Grupo de Investigación GEBIOME, Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Caldas, Calle 65 No. 26-10, Apartado Aéreo 275, Manizales, Caldas, Colombia
| | - Erika M. Ospina Pérez
- Grupo de Investigación GEBIOME, Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Caldas, Calle 65 No. 26-10, Apartado Aéreo 275, Manizales, Caldas, Colombia
| | - Freddy Méndez Urbano
- Grupo de Investigación GEBIOME, Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Caldas, Calle 65 No. 26-10, Apartado Aéreo 275, Manizales, Caldas, Colombia
| | - Daniela Velásquez Guarín
- Grupo de Investigación GEBIOME, Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Caldas, Calle 65 No. 26-10, Apartado Aéreo 275, Manizales, Caldas, Colombia
| | - Ingrith Y. Mejía Fontecha
- Grupo de Investigación GEBIOME, Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Caldas, Calle 65 No. 26-10, Apartado Aéreo 275, Manizales, Caldas, Colombia
| | - Paula A. Ossa López
- Grupo de Investigación GEBIOME, Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Caldas, Calle 65 No. 26-10, Apartado Aéreo 275, Manizales, Caldas, Colombia
| | - Fredy A. Rivera Páez
- Grupo de Investigación GEBIOME, Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Caldas, Calle 65 No. 26-10, Apartado Aéreo 275, Manizales, Caldas, Colombia
| | - Héctor E. Ramírez-Chaves
- Grupo de Investigación GEBIOME, Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Caldas, Calle 65 No. 26-10, Apartado Aéreo 275, Manizales, Caldas, Colombia
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Durand‐Bessart C, Cordeiro NJ, Chapman CA, Abernethy K, Forget P, Fontaine C, Bretagnolle F. Trait matching and sampling effort shape the structure of the frugivory network in Afrotropical forests. THE NEW PHYTOLOGIST 2023; 237:1446-1462. [PMID: 36377098 PMCID: PMC10108259 DOI: 10.1111/nph.18619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 10/13/2022] [Indexed: 06/16/2023]
Abstract
Frugivory in tropical forests is a major ecological process as most tree species rely on frugivores to disperse their seeds. However, the underlying mechanisms driving frugivore-plant networks remain understudied. Here, we evaluate the data available on the Afrotropical frugivory network to identify structural properties, as well as assess knowledge gaps. We assembled a database of frugivory interactions from the literature with > 10 000 links, between 807 tree and 285 frugivore species. We analysed the network structure using a block model that groups species with similar interaction patterns and estimates interaction probabilities among them. We investigated the species traits related to this grouping structure. This frugivory network was simplified into 14 tree and 14 frugivore blocks. The block structure depended on the sampling effort among species: Large mammals were better-studied, while smaller frugivores were the least studied. Species traits related to frugivory were strong predictors of the species composition of blocks and interactions among them. Fruits from larger trees were consumed by most frugivores, and large frugivores had higher probabilities to consume larger fruits. To conclude, this large-scale frugivory network was mainly structured by species traits involved in frugivory, and as expected by the distribution areas of species, while still being limited by sampling incompleteness.
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Affiliation(s)
- Clémentine Durand‐Bessart
- Biogeosciences, UMR 6282Université Bourgogne Franche Comte‐CNRS21000DijonFrance
- Centre d'Ecologie et des Sciences de la ConservationCESCO, UMR 7204, MNHN‐CNRS‐SU75005ParisFrance
| | - Norbert J. Cordeiro
- Department of Biology (mc WB 816)Roosevelt University430 S. Michigan AvenueChicagoIL60605USA
- Science & EducationThe Field Museum1400 S. Lake Shore DriveChicagoIL60605USA
| | - Colin A. Chapman
- Wilson Center1300 Pennsylvania Avenue NWWashingtonDC20004USA
- Department of AnthropologyCenter for the Advanced Study of Human Paleobiology, The George Washington UniversityWashingtonDC20037USA
- School of Life SciencesUniversity of KwaZulu‐NatalScottsville3201PietermaritzburgSouth Africa
- Shaanxi Key Laboratory for Animal ConservationNorthwest University710069Xi'anChina
| | - Katharine Abernethy
- African Forest Ecology Group, School of Natural SciencesUniversity of StirlingStirlingFK9 4LAUK
- Institut de Recherches en Ecologie TropicaleCENARESTGros Bouquet2144LibrevilleGabon
| | - Pierre‐Michel Forget
- Muséum National d'Histoire NaturelleUMR 7179 MECADEV CNRS‐MNHN1 Avenue du Petit Château91800BrunoyFrance
| | - Colin Fontaine
- Centre d'Ecologie et des Sciences de la ConservationCESCO, UMR 7204, MNHN‐CNRS‐SU75005ParisFrance
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Teodosio-Faustino IA, Chávez-González E, Ruelas Inzunza E. In a Neotropical Periurban Park, Fruit Consumption by Birds Seems to Be a Random Process. Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.630150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Frugivory interactions between birds and fruit-bearing plants are shaped by the abundance of its interacting species, their temporal overlap, the matching of their morphologies, as well as fruit and seed characteristics. Our study evaluates the role of seven factors of fruits and plants in determining the frequency of whole-fruit consumption by birds. We studied the frugivory network of a Neotropical periurban park in Xalapa, Veracruz, Mexico, and quantified relative abundance and phenology of birds and fruit, as well as fruit morphology, chromatic and achromatic contrast, and nutritional content. Using a maximum likelihood approach, we compared the observed interaction network with 62 single- and multiple-variable probabilistic models. Our network is composed of 11 plants and 17 birds involved in 81 frugivory interactions. This network is nested, modular, and relatively specialized. However, the frequency of pairwise interactions is not explained by the variables examined in our probabilistic models and found the null model has the best performance. This indicates that no single predictor or combination of them is better at explaining the observed frequency of pairwise interactions than the null model. The subsequent four top-ranking models, with ΔAIC values < 100, are single-variable ones: carbohydrate content, lipid content, chromatic contrast, and morphology. Two- and three-variable models show the poorest fit to observed data. The lack of a deterministic pattern does not support any of our predictions nor neutral- or niche-based processes shaping the observed pattern of fruit consumption in our interaction network. It may also mean that fruit consumption by birds in this periurban park is a random process. Although our study failed to find a pattern, our work exemplifies how investigations done in urban settings, poor in species and interactions, can help us understand the role of disturbance in the organization of frugivory networks and the processes governing their structure.
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Heleno RH, Mendes F, Coelho AP, Ramos JA, Palmeirim JM, Rainho A, de Lima RF. The upsizing of the São Tomé seed dispersal network by introduced animals. OIKOS 2021. [DOI: 10.1111/oik.08279] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Ruben H. Heleno
- Centre for Functional Ecology (CFE‐UC), Dept of Life Sciences, Univ. of Coimbra, Calçada Martim de Freitas Coimbra Portugal
| | - Filipa Mendes
- Centre for Functional Ecology (CFE‐UC), Dept of Life Sciences, Univ. of Coimbra, Calçada Martim de Freitas Coimbra Portugal
| | - Ana P. Coelho
- Centre for Ecology, Evolution and Environmental Changes (cE3c) and Dept of Animal Biology, Faculty of Sciences, Univ. of Lisbon Lisboa Portugal
- Dept of Biology and CESAM, Univ. of Aveiro, Campus de Santiago Aveiro Portugal
| | - Jaime A. Ramos
- Centre for Ecology, Evolution and Environmental Changes (cE3c) and Dept of Animal Biology, Faculty of Sciences, Univ. of Lisbon Lisboa Portugal
| | - Jorge M. Palmeirim
- Marine and Environmental Sciences Centre (MARE), Dept of Life Sciences, Univ. of Coimbra Coimbra Portugal
| | - Ana Rainho
- Centre for Ecology, Evolution and Environmental Changes (cE3c) and Dept of Animal Biology, Faculty of Sciences, Univ. of Lisbon Lisboa Portugal
| | - Ricardo F. de Lima
- Centre for Ecology, Evolution and Environmental Changes (cE3c) and Dept of Animal Biology, Faculty of Sciences, Univ. of Lisbon Lisboa Portugal
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6
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Quintero E, Isla J, Jordano P. Methodological overview and data‐merging approaches in the study of plant–frugivore interactions. OIKOS 2021. [DOI: 10.1111/oik.08379] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
| | - Jorge Isla
- Estación Biológica de Doñana, CSIC Sevilla Spain
| | - Pedro Jordano
- Estación Biológica de Doñana, CSIC Sevilla Spain
- Dept Biología Vegetal y Ecología, Univ. de Sevilla Sevilla Spain
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Silva LB, Silva JB, Souza CS, Menck Guimarães M, Sales MF, Castro CC. Plant–animal interactions of understory species in an area of tropical rainforest, north‐eastern Brazil. AUSTRAL ECOL 2021. [DOI: 10.1111/aec.13004] [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)
- Leonardo Barbosa Silva
- Programa de Pós‐Graduação em Ecologia Departamento de Biologia Universidade Federal Rural de Pernambuco (UFRPE) Recife PEBrazil
| | - Jacilene Bezerra Silva
- Programa de Pós‐Graduação em Ecologia Departamento de Biologia Universidade Federal Rural de Pernambuco (UFRPE) Recife PEBrazil
| | - Camila Silveira Souza
- Programa de Pós‐Graduação em Botânica Departamento de Botânica Campus Centro PolitécnicoUniversidade Federal do Paraná Curitiba ParanáCEP 81531‐980Brazil
| | - Murilo Menck Guimarães
- Programa de Pós‐Graduação em Botânica Departamento de Botânica Campus Centro PolitécnicoUniversidade Federal do Paraná Curitiba ParanáCEP 81531‐980Brazil
| | - Margareth Ferreira Sales
- Programa de Pós‐Graduação em Ecologia Departamento de Biologia Universidade Federal Rural de Pernambuco (UFRPE) Recife PEBrazil
| | - Cibele Cardoso Castro
- Universidade Federal do Agreste de Pernambuco/Universidade Federal Rural de Pernambuco Garanhuns PE Brazil
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Salazar‐Rivera GI, Dáttilo W, Castillo‐Campos G, Flores‐Estévez N, Ramírez García B, Ruelas Inzunza E. The frugivory network properties of a simplified ecosystem: Birds and plants in a Neotropical periurban park. Ecol Evol 2020; 10:8579-8591. [PMID: 32884642 PMCID: PMC7452784 DOI: 10.1002/ece3.6481] [Citation(s) in RCA: 5] [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: 03/30/2020] [Revised: 05/11/2020] [Accepted: 05/19/2020] [Indexed: 11/29/2022] Open
Abstract
Frugivory networks exhibit a set of properties characterized by a number of network theory-derived metrics. Their structures often form deterministic patterns that can be explained by the functional roles of interacting species. Although we know lots about how these networks are organized when ecosystems are in a complete, functional condition, we know much less about how incomplete and simplified networks (such as those found in urban and periurban parks) are organized, which features are maintained, which ones are not, and why. In this paper, we examine the properties of a network between frugivorous birds and plants in a small Neotropical periurban park. We found a frugivory network composed of 29 species of birds and 23 of plants. The main roles in this network are played by four species of generalist birds (three resident, one migratory: Myiozetetes similis, Turdus grayi, Chlorospingus flavopectus, and Dumetella carolinensis) and three species of plants (one exotic, two early successional: Phoenix canariensis, Phoradendron sp., and Witheringia stramoniifolia). When compared to reference data from other locations in the Neotropics, species richness is low, one important network-level metric is maintained (modularity) whereas another one is not (nestedness). Nestedness, a metric associated with network specialists, is a feature this network lacks. Species-level metrics such as degree, species strength, and module roles, are not maintained. Our work supports modularity as the most pervasive network-level metric of altered habitats. From a successional point of view, our results suggest that properties revealed by species-level indices may be developed at a later time, lagging the acquisition of structural elements.
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Affiliation(s)
| | - Wesley Dáttilo
- Red de EcoetologíaInstituto de Ecología A.C.XalapaMexico
| | | | - Norma Flores‐Estévez
- Instituto de Biotecnología y Ecología AplicadaUniversidad VeracruzanaXalapaMexico
| | - Brenda Ramírez García
- Instituto de Investigaciones en Ecosistemas y SustentabilidadUniversidad Nacional Autónoma de MéxicoMoreliaMexico
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Carreira DC, Dáttilo W, Bruno DL, Percequillo AR, Ferraz KMPMB, Galetti M. Small vertebrates are key elements in the frugivory networks of a hyperdiverse tropical forest. Sci Rep 2020; 10:10594. [PMID: 32601315 PMCID: PMC7324603 DOI: 10.1038/s41598-020-67326-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 05/19/2020] [Indexed: 11/21/2022] Open
Abstract
The local, global or functional extinction of species or populations of animals, known as defaunation, can erode important ecological services in tropical forests. Many mutualistic interactions, such as seed dispersal of large seeded plants, can be lost in large continuous forests due to the rarity of large-bodied mammalian frugivores. Most of studies that try to elucidate the effects of defaunation on seed dispersal focused on primates or birds, and we lack a detailed understanding on the interactions between ground-dwelling fauna and fleshy fruits. Using camera traps in forest areas with different degrees of defaunation, we described the organization of frugivory networks involving birds, mammals and plants. We recorded 375 frugivory interactions between 21 frugivores and 150 fruiting trees of 30 species of fleshy fruit plants in six sites in continuous Atlantic forest of Brazil. We found that small frugivores-particularly small rodents and birds-were responsible for 72% of the events of frugivory. Large frugivores, such as tapirs and peccaries, were responsible for less than 21% of frugivory events. Our results indicate that the interactions between flesh fruiting plants and frugivores are dominated by small frugivores, an indication of a functional loss of large frugivores in this endangered biome.
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Affiliation(s)
- Daiane C Carreira
- Programa Interunidades de Pós Graduação em Ecologia Aplicada, Escola Superior de Agricultura "Luiz de Queiroz"- Universidade de São Paulo (ESALQ-USP), Piracicaba, São Paulo, CP 13418-900, Brazil.
- Fundação Hermínio Ometto - FHO|Uniararas, Araras, São Paulo, CP 13607-339, Brazil.
| | - Wesley Dáttilo
- Red de Ecoetología, Instituto de Ecología A.C., CP 91070, Xalapa, Veracruz, Mexico
| | - Dáfini L Bruno
- Programa de Pós Graduação em Ecologia e Recursos Naturais - Universidade Federal de São Carlos (UFSCar), São Carlos, São Paulo, CP 13565-905, Brazil
| | - Alexandre Reis Percequillo
- Departamento de Ciências Biológicas, Escola Superior de Agricultura "Luiz de Queiroz" - Universidade de São Paulo (ESALQ-USP), Piracicaba, São Paulo, CP 13418-900, Brazil
| | - Katia M P M B Ferraz
- Departamento de Ciências Florestais, Escola Superior de Agricultura "Luiz de Queiroz" - Universidade de São Paulo (ESALQ-USP), Piracicaba, São Paulo, CP 13418-900, Brazil
| | - Mauro Galetti
- Department of Biology, University of Miami, Coral Gables, FL, CP 33146, USA
- Departamento de Biodiversidade, Universidade Estadual Paulista (UNESP), Rio Claro, São Paulo, CP 13506-900, Brazil
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Rogers HS, Beckman NG, Hartig F, Johnson JS, Pufal G, Shea K, Zurell D, Bullock JM, Cantrell RS, Loiselle B, Pejchar L, Razafindratsima OH, Sandor ME, Schupp EW, Strickland WC, Zambrano J. The total dispersal kernel: a review and future directions. AOB PLANTS 2019; 11:plz042. [PMID: 31579119 PMCID: PMC6757349 DOI: 10.1093/aobpla/plz042] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Accepted: 07/18/2019] [Indexed: 05/22/2023]
Abstract
The distribution and abundance of plants across the world depends in part on their ability to move, which is commonly characterized by a dispersal kernel. For seeds, the total dispersal kernel (TDK) describes the combined influence of all primary, secondary and higher-order dispersal vectors on the overall dispersal kernel for a plant individual, population, species or community. Understanding the role of each vector within the TDK, and their combined influence on the TDK, is critically important for being able to predict plant responses to a changing biotic or abiotic environment. In addition, fully characterizing the TDK by including all vectors may affect predictions of population spread. Here, we review existing research on the TDK and discuss advances in empirical, conceptual modelling and statistical approaches that will facilitate broader application. The concept is simple, but few examples of well-characterized TDKs exist. We find that significant empirical challenges exist, as many studies do not account for all dispersal vectors (e.g. gravity, higher-order dispersal vectors), inadequately measure or estimate long-distance dispersal resulting from multiple vectors and/or neglect spatial heterogeneity and context dependence. Existing mathematical and conceptual modelling approaches and statistical methods allow fitting individual dispersal kernels and combining them to form a TDK; these will perform best if robust prior information is available. We recommend a modelling cycle to parameterize TDKs, where empirical data inform models, which in turn inform additional data collection. Finally, we recommend that the TDK concept be extended to account for not only where seeds land, but also how that location affects the likelihood of establishing and producing a reproductive adult, i.e. the total effective dispersal kernel.
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Affiliation(s)
- Haldre S Rogers
- Department of Ecology, Evolution, and Organismal Biology, Iowa State University, Ames, IA, USA
- Corresponding author’s e-mail address:
| | - Noelle G Beckman
- Department of Biology and Ecology Center, Utah State University, Logan, UT, USA
| | - Florian Hartig
- Theoretical Ecology, Faculty of Biology and Preclinical Medicine, University of Regensburg, Regensburg, Germany
| | - Jeremy S Johnson
- School of Forestry, Northern Arizona University, Flagstaff, AZ, USA
| | - Gesine Pufal
- Department of Nature Conservation and Landscape Ecology, University of Freiburg, Freiburg, Germany
| | - Katriona Shea
- Department of Biology, The Pennsylvania State University, University Park, PA, USA
| | - Damaris Zurell
- Geography Department, Humboldt-University Berlin, Berlin, Germany
- Dynamic Macroecology, Department of Landscape Dynamics, Swiss Federal Research Institute WSL, Birmensdorf, Switzerland
| | - James M Bullock
- Centre for Ecology and Hydrology, Benson Lane, Wallingford, Oxfordshire, UK
| | | | - Bette Loiselle
- Department of Wildlife Ecology and Conservation & Center for Latin American Studies, University of Florida, Gainesville, FL, USA
| | - Liba Pejchar
- Department of Fish, Wildlife and Conservation Biology, Colorado State University, Fort Collins, CO, USA
| | | | - Manette E Sandor
- School of Earth Sciences and Environmental Sustainability, Northern Arizona University, Flagstaff, AZ, USA
| | - Eugene W Schupp
- Department of Wildland Resources and Ecology Center, Utah State University, Logan, UT, USA
| | - W Christopher Strickland
- Department of Mathematics and Department of Ecology & Evolutionary Biology, University of Tennessee, Knoxville, TN, USA
| | - Jenny Zambrano
- Department of Biology, University of Maryland, College Park, MD, USA
- School of Biological Sciences, Washington State University, Pullman WA, USA
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Vizentin-Bugoni J, Tarwater CE, Foster JT, Drake DR, Gleditsch JM, Hruska AM, Kelley JP, Sperry JH. Structure, spatial dynamics, and stability of novel seed dispersal mutualistic networks in Hawaiʻi. Science 2019; 364:78-82. [DOI: 10.1126/science.aau8751] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 11/29/2018] [Accepted: 03/05/2019] [Indexed: 11/02/2022]
Abstract
Increasing rates of human-caused species invasions and extinctions may reshape communities and modify the structure, dynamics, and stability of species interactions. To investigate how such changes affect communities, we performed multiscale analyses of seed dispersal networks on Oʻahu, Hawaiʻi. Networks consisted exclusively of novel interactions, were largely dominated by introduced species, and exhibited specialized and modular structure at local and regional scales, despite high interaction dissimilarity across communities. Furthermore, the structure and stability of the novel networks were similar to native-dominated communities worldwide. Our findings suggest that shared evolutionary history is not a necessary process for the emergence of complex network structure, and interaction patterns may be highly conserved, regardless of species identity and environment. Introduced species can quickly become well integrated into novel networks, making restoration of native ecosystems more challenging than previously thought.
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