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Rodger JG, Bennett JM, Razanajatovo M, Knight TM, van Kleunen M, Ashman TL, Steets JA, Hui C, Arceo-Gómez G, Burd M, Burkle LA, Burns JH, Durka W, Freitas L, Kemp JE, Li J, Pauw A, Vamosi JC, Wolowski M, Xia J, Ellis AG. Widespread vulnerability of flowering plant seed production to pollinator declines. Sci Adv 2021; 7:eabd3524. [PMID: 34644118 PMCID: PMC8514087 DOI: 10.1126/sciadv.abd3524] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Despite evidence of pollinator declines from many regions across the globe, the threat this poses to plant populations is not clear because plants can often produce seeds without animal pollinators. Here, we quantify pollinator contribution to seed production by comparing fertility in the presence versus the absence of pollinators for a global dataset of 1174 plant species. We estimate that, without pollinators, a third of flowering plant species would produce no seeds and half would suffer an 80% or more reduction in fertility. Pollinator contribution to plant reproduction is higher in plants with tree growth form, multiple reproductive episodes, more specialized pollination systems, and tropical distributions, making these groups especially vulnerable to reduced service from pollinators. These results suggest that, without mitigating efforts, pollinator declines have the potential to reduce reproduction for most plant species, increasing the risk of population declines.
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Affiliation(s)
- James G. Rodger
- Department of Botany and Zoology, Stellenbosch University, Matieland 7602, South Africa
- Biodiversity Informatics Unit, Department of Mathematical Sciences, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
- Department of Ecology and Genetics, Uppsala University, Uppsala, Sweden
- Corresponding author.
| | - Joanne M. Bennett
- Institute of Biology, Martin Luther University Halle-Wittenberg, Am Kirchtor 1, 06108, Halle (Saale), Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstraße 4, 04103 Leipzig, Germany
- Centre for Applied Water Science, Institute for Applied Ecology, Faculty of Science and Technology, University of Canberra, Canberra, ACT, Australia
| | - Mialy Razanajatovo
- Ecology, Department of Biology, University of Konstanz, Universitätsstrasse 10, 78457 Konstanz, Germany
| | - Tiffany M. Knight
- Institute of Biology, Martin Luther University Halle-Wittenberg, Am Kirchtor 1, 06108, Halle (Saale), Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstraße 4, 04103 Leipzig, Germany
- Department of Community Ecology, Helmholtz Centre for Environmental Research—UFZ, Theodor-Lieser-Straße 4, 06120 Halle (Saale), Germany
| | - Mark van Kleunen
- Ecology, Department of Biology, University of Konstanz, Universitätsstrasse 10, 78457 Konstanz, Germany
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou 318000, China
| | - Tia-Lynn Ashman
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh PA 15260, USA
| | - Janette A. Steets
- Department of Plant Biology, Ecology and Evolution, Oklahoma State University, Stillwater, OK 74078, USA
- Illumination Works, 2689 Commons Blvd., Suite 120, Beavercreek, OH 45431, USA
| | - Cang Hui
- Centre for Invasion Biology, Department of Mathematical Sciences, Stellenbosch University, Matieland 7602, South Africa
- Biodiversity Informatics Unit, African Institute for Mathematical Sciences, Cape Town 7945, South Africa
- International Initiative for Theoretical Ecology, Unit 10, 317 Essex Road, London N1 2EE, UK
| | - Gerardo Arceo-Gómez
- Department of Biological Sciences, East Tennessee State University, Johnson City, TN 37614, USA
| | - Martin Burd
- School of Biological Sciences, Monash University, Melbourne, VIC, Australia
| | - Laura A. Burkle
- Department of Ecology, Montana State University, Bozeman, MT 59717, USA
| | - Jean H. Burns
- Department of Biology, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Walter Durka
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstraße 4, 04103 Leipzig, Germany
- Department of Community Ecology, Helmholtz Centre for Environmental Research—UFZ, Theodor-Lieser-Straße 4, 06120 Halle (Saale), Germany
| | | | - Jurene E. Kemp
- Department of Botany and Zoology, Stellenbosch University, Matieland 7602, South Africa
| | - Junmin Li
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou 318000, China
| | - Anton Pauw
- Department of Botany and Zoology, Stellenbosch University, Matieland 7602, South Africa
| | - Jana C. Vamosi
- Department of Biological Sciences, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Marina Wolowski
- Institute of Natural Sciences, Federal University of Alfenas, Alfenas, Brazil
| | - Jing Xia
- College of Life Sciences, South-Central University for Nationalities, Wuhan, Hubei, China
| | - Allan G. Ellis
- Department of Botany and Zoology, Stellenbosch University, Matieland 7602, South Africa
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2
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Latombe G, Richardson DM, McGeoch MA, Altwegg R, Catford JA, Chase JM, Courchamp F, Esler KJ, Jeschke JM, Landi P, Measey J, Midgley GF, Minoarivelo HO, Rodger JG, Hui C. Mechanistic reconciliation of community and invasion ecology. Ecosphere 2021; 12:e03359. [PMID: 34938590 PMCID: PMC8647914 DOI: 10.1002/ecs2.3359] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 08/30/2020] [Indexed: 11/10/2022] Open
Abstract
Community and invasion ecology have mostly grown independently. There is substantial overlap in the processes captured by different models in the two fields, and various frameworks have been developed to reduce this redundancy and synthesize information content. Despite broad recognition that community and invasion ecology are interconnected, a process-based framework synthesizing models across these two fields is lacking. Here we review 65 representative community and invasion models and propose a common framework articulated around six processes (dispersal, drift, abiotic interactions, within-guild interactions, cross-guild interactions, and genetic changes). The framework is designed to synthesize the content of the two fields, provide a general perspective on their development, and enable their comparison. The application of this framework and of a novel method based on network theory reveals some lack of coherence between the two fields, despite some historical similarities. Community ecology models are characterized by combinations of multiple processes, likely reflecting the search for an overarching theory to explain community assembly and structure, drawing predominantly on interaction processes, but also accounting largely for the other processes. In contrast, most models in invasion ecology invoke fewer processes and focus more on interactions between introduced species and their novel biotic and abiotic environment. The historical dominance of interaction processes and their independent developments in the two fields is also reflected in the lower level of coherence for models involving interactions, compared to models involving dispersal, drift, and genetic changes. It appears that community ecology, with a longer history than invasion ecology, has transitioned from the search for single explanations for patterns observed in nature to investigate how processes may interact mechanistically, thereby generating and testing hypotheses. Our framework paves the way for a similar transition in invasion ecology, to better capture the dynamics of multiple alien species introduced in complex communities. Reciprocally, applying insights from invasion to community ecology will help us understand and predict the future of ecological communities in the Anthropocene, in which human activities are weakening species' natural boundaries. Ultimately, the successful integration of the two fields could advance a predictive ecology that is urgently required in a rapidly changing world.
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Affiliation(s)
- Guillaume Latombe
- BioInvasions, Global ChangeMacroecology‐GroupDepartment of Botany and Biodiversity ResearchUniversity ViennaRennweg 14Vienna1030Austria
- Centre for Invasion BiologyDepartment of Botany and ZoologyStellenbosch UniversityStellenbosch7600South Africa
| | - David M. Richardson
- Centre for Invasion BiologyDepartment of Botany and ZoologyStellenbosch UniversityStellenbosch7600South Africa
| | - Melodie A. McGeoch
- School of Biological SciencesMonash UniversityClaytonVictoria3800Australia
| | - Res Altwegg
- Statistics in Ecology, Environment and ConservationDepartment of Statistical SciencesUniversity of Cape TownRondebosch7701South Africa
| | - Jane A. Catford
- Department of GeographyKing’s College LondonWC2B 4BGLondonUK
| | - Jonathan M. Chase
- German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐LeipzigDeutscherplatz 5eLeipzigGermany
- Department of Computer SciencesMartin Luther UniversityHalle (Saale)Germany
| | - Franck Courchamp
- Université Paris‐SaclayEcologie Systématique et EvolutionCNRSAgroParisTechOrsay91405France
| | - Karen J. Esler
- Department of Conservation Ecology & Entomology and Centre for Invasion BiologyStellenbosch UniversityPrivate Bag x1Matieland7602South Africa
| | - Jonathan M. Jeschke
- Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB)Müggelseedamm 310Berlin12587Germany
- Freie Universität BerlinDepartment of Biology, Chemistry, PharmacyInstitute of BiologyKönigin‐Luise‐Str. 1‐3Berlin14195Germany
- Berlin‐Brandenburg Institute of Advanced Biodiversity Research (BBIB)Königin‐Luise‐Str. 2‐4Berlin14195Germany
| | - Pietro Landi
- Centre for Invasion BiologyDepartment of Mathematical SciencesStellenbosch UniversityStellenbosch7600South Africa
| | - John Measey
- Centre for Invasion BiologyDepartment of Botany and ZoologyStellenbosch UniversityStellenbosch7600South Africa
| | - Guy F. Midgley
- Global Change Biology GroupDepartment of Botany and ZoologyStellenbosch UniversityStellenbosch7600South Africa
| | - Henintsoa O. Minoarivelo
- Centre for Invasion BiologyDepartment of Mathematical SciencesStellenbosch UniversityStellenbosch7600South Africa
| | - James G. Rodger
- Centre for Invasion BiologyDepartment of Mathematical SciencesStellenbosch UniversityStellenbosch7600South Africa
| | - Cang Hui
- Centre for Invasion BiologyDepartment of Mathematical SciencesStellenbosch UniversityStellenbosch7600South Africa
- Biodiversity Informatics UnitAfrican Institute for Mathematical SciencesCape Town7945South Africa
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3
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Burns JH, Bennett JM, Li J, Xia J, Arceo-Gómez G, Burd M, Burkle LA, Durka W, Ellis AG, Freitas L, Rodger JG, Vamosi JC, Wolowski M, Ashman TL, Knight TM, Steets JA. Plant traits moderate pollen limitation of introduced and native plants: a phylogenetic meta-analysis of global scale. New Phytol 2019; 223:2063-2075. [PMID: 31116447 DOI: 10.1111/nph.15935] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [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: 03/15/2019] [Accepted: 05/03/2019] [Indexed: 06/09/2023]
Abstract
The role of pollination in the success of invasive plants needs to be understood because invasives have substantial effects on species interactions and ecosystem functions. Previous research has shown both that reproduction of invasive plants is often pollen limited and that invasive plants can have high seed production, motivating the questions: How do invasive populations maintain reproductive success in spite of pollen limitation? What species traits moderate pollen limitation for invaders? We conducted a phylogenetic meta-analysis with 68 invasive, 50 introduced noninvasive and 1931 native plant populations, across 1249 species. We found that invasive populations with generalist pollination or pollinator dependence were less pollen limited than natives, but invasives and introduced noninvasives did not differ. Invasive species produced 3× fewer ovules/flower and >250× more flowers per plant, compared with their native relatives. While these traits were negatively correlated, consistent with a tradeoff, this did not differ with invasion status. Invasive plants that produce many flowers and have floral generalisation are able to compensate for or avoid pollen limitation, potentially helping to explain the invaders' reproductive successes.
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Affiliation(s)
- Jean H Burns
- Department of Biology, Case Western Reserve University, Cleveland, OH, 44106-7080, USA
| | - Joanne M Bennett
- Institute of Biology, 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, Leipzig, 04103, Germany
| | - Junmin Li
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou City, 318000, China
| | - Jing Xia
- College of Life Sciences, South-Central University for Nationalities, Wuhan, 430074, China
| | - Gerardo Arceo-Gómez
- Department of Biological Sciences, East Tennessee State University, Johnson City, TN, 37614,, USA
| | - Martin Burd
- School of Biological Sciences, Monash University, Melbourne, Victoria, 3800, Australia
| | - Laura A Burkle
- Department of Ecology, Montana State University, Bozeman, MT, 59717, USA
| | - Walter Durka
- German Centre for Integrative Biodiversity Research (iDiv), Halle-Jena-Leipzig, Deutscher Platz 5e, Leipzig, 04103, Germany
- Department of Community Ecology, Helmholtz Centre for Environmental Research - UFZ, Theodor-Lieser-Straße 4, Halle (Saale), 06120, Germany
| | - Allan G Ellis
- Department of Botany and Zoology, University of Stellenbosch, Private Bag X1, Matieland, 7602, South Africa
| | - Leandro Freitas
- Rio de Janeiro Botanical Garden, Rio de Janeiro, 22460-030, Brazil
| | - James G Rodger
- Department of Botany and Zoology, University of Stellenbosch, Private Bag X1, Matieland, 7602, South Africa
- Department of Plant Ecology and Evolution, Evolutionary Biology Centre, Uppsala University, Norbyvägen 18 D, Uppsala, SE-752 36, Sweden
| | - Jana C Vamosi
- Department of Biological Sciences, University of Calgary, Calgary, AB, T2N1N4, Canada
| | - Marina Wolowski
- Institute of Natural Sciences, Federal University of Alfenas, Alfenas, Minas Gerais, 37130-001, Brazil
| | - Tia-Lynn Ashman
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, 15217, USA
| | - Tiffany M Knight
- Institute of Biology, 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, Leipzig, 04103, Germany
- Department of Community Ecology, Helmholtz Centre for Environmental Research - UFZ, Theodor-Lieser-Straße 4, Halle (Saale), 06120, Germany
| | - Janette A Steets
- Department of Plant Biology, Ecology and Evolution, Oklahoma State University, Stillwater, OK, 74078, USA
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Rodger JG, Landi P, Hui C. Heterogeneity in local density allows a positive evolutionary relationship between self-fertilisation and dispersal. Evolution 2018; 72:1784-1800. [PMID: 30039639 DOI: 10.1111/evo.13562] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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: 10/19/2017] [Revised: 06/28/2018] [Accepted: 07/10/2018] [Indexed: 12/26/2022]
Abstract
Despite empirical evidence for a positive relationship between dispersal and self-fertilization (selfing), theoretical work predicts that these traits should always be negatively correlated, and the Good Coloniser Syndrome of high dispersal and selfing (Cf. Baker's Law) should not evolve. Critically, previous work assumes that adult density is spatiotemporally homogeneous, so selfing results in identical offspring production for all patches, eliminating the benefit of dispersal for escaping from local resource competition. We investigate the joint evolution of dispersal and selfing in a demographically structured metapopulation model where local density is spatiotemporally heterogeneous due to extinction-recolonization dynamics. Selfing alleviates outcrossing failure due to low local density (an Allee effect) while dispersal alleviates competition through dispersal of propagules from high- to low-density patches. Because local density is spatiotemporally heterogeneous in our model, selfing does not eliminate heterogeneity in competition, so dispersal remains beneficial even under full selfing. Hence the Good Coloniser Syndrome is evolutionarily stable under a broad range of conditions, and both negative and positive relationships between dispersal and selfing are possible, depending on the environment. Our model thus accommodates positive empirical relationships between dispersal and selfing not predicted by previous theoretical work and provides additional explanations for negative relationships.
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Affiliation(s)
- James G Rodger
- Theoretical Ecology Group, Department of Mathematical Sciences, Stellenbosch University, Matieland, 7602, South Africa.,Department of Ecology and Evolution, University of Lausanne, Lausanne, 1015, Switzerland
| | - Pietro Landi
- Theoretical Ecology Group, Department of Mathematical Sciences, Stellenbosch University, Matieland, 7602, South Africa.,Evolution and Ecology Program, International Institute for Applied Systems Analysis, Laxenburg, 2361, Austria
| | - Cang Hui
- Theoretical Ecology Group, Department of Mathematical Sciences, Stellenbosch University, Matieland, 7602, South Africa.,Mathematical and Physical Biosciences, African Institute for Mathematical Sciences, Muizenberg, 7945, South Africa
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5
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Rodger JG, Ellis AG. Distinct effects of pollinator dependence and self-incompatibility on pollen limitation in South African biodiversity hotspots. Biol Lett 2016; 12:rsbl.2016.0253. [PMID: 27277954 DOI: 10.1098/rsbl.2016.0253] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [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: 03/26/2016] [Accepted: 05/13/2016] [Indexed: 11/12/2022] Open
Abstract
Global synthesis indicates that limitation of plant fecundity by pollen receipt (pollen limitation) is positively related to regional plant diversity and is higher for self-incompatible than self-compatible species. While self-incompatible species are always dependent on pollinating agents, self-compatible species may be pollinator-dependent or autofertile. This should cause variation in pollen limitation among self-compatible species, with lower pollen limitation in autofertile species because they do not depend on pollinators. We hypothesized that the intensity of pollen limitation in self-incompatible compared with pollinator-dependent self-compatible species should depend on whether pollen limitation is determined more by quantity than quality of pollen received. We compared pollen limitation between these three groups using a dataset of 70 biotically pollinated species from biodiverse regions of South Africa. Comparison with a global dataset indicated that pollen limitation in the South African biodiversity hotspots was generally comparable to other regions, despite expectations of higher pollen limitation based on the global plant diversity-pollen limitation relationship. Pollen limitation was lowest for autofertile species, as expected. It was also higher for pollinator-dependent self-compatible species than self-incompatible species, consistent with increased pollen-quality limitation in the former group due to negative consequences of pollinator-mediated self-pollination. However, there was a higher frequency of plants with zygomorphic flowers, which were also more pollen-limited, among pollinator-dependent self-compatible species. Thus, we could not attribute this difference in pollen limitation exclusively to a difference in pollen quality. Nevertheless, our results indicate that comparative studies should control for both pollinator dependence and self-incompatiblity when evaluating effects of other factors on pollen limitation.
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Affiliation(s)
- James G Rodger
- Department of Botany and Zoology, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
| | - Allan G Ellis
- Department of Botany and Zoology, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
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6
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Dormontt EE, Gardner MG, Breed MF, Rodger JG, Prentis PJ, Lowe AJ. Genetic bottlenecks in time and space: reconstructing invasions from contemporary and historical collections. PLoS One 2014; 9:e106874. [PMID: 25192006 PMCID: PMC4156389 DOI: 10.1371/journal.pone.0106874] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Accepted: 08/09/2014] [Indexed: 02/02/2023] Open
Abstract
Herbarium accession data offer a useful historical botanical perspective and have been used to track the spread of plant invasions through time and space. Nevertheless, few studies have utilised this resource for genetic analysis to reconstruct a more complete picture of historical invasion dynamics, including the occurrence of separate introduction events. In this study, we combined nuclear and chloroplast microsatellite analyses of contemporary and historical collections of Senecio madagascariensis, a globally invasive weed first introduced to Australia c. 1918 from its native South Africa. Analysis of nuclear microsatellites, together with temporal spread data and simulations of herbarium voucher sampling, revealed distinct introductions to south-eastern Australia and mid-eastern Australia. Genetic diversity of the south-eastern invasive population was lower than in the native range, but higher than in the mid-eastern invasion. In the invasive range, despite its low resolution, our chloroplast microsatellite data revealed the occurrence of new haplotypes over time, probably as the result of subsequent introduction(s) to Australia from the native range during the latter half of the 20th century. Our work demonstrates how molecular studies of contemporary and historical field collections can be combined to reconstruct a more complete picture of the invasion history of introduced taxa. Further, our study indicates that a survey of contemporary samples only (as undertaken for the majority of invasive species studies) would be insufficient to identify potential source populations and occurrence of multiple introductions.
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Affiliation(s)
- Eleanor E. Dormontt
- Australian Centre for Evolutionary Biology and Biodiversity, University of Adelaide, Adelaide, South Australia, Australia
| | - Michael G. Gardner
- School of Biological Sciences, Flinders University, Adelaide, South Australia, Australia
- Evolutionary Biology Unit, South Australian Museum, Adelaide, South Australia, Australia
| | - Martin F. Breed
- Australian Centre for Evolutionary Biology and Biodiversity, University of Adelaide, Adelaide, South Australia, Australia
| | - James G. Rodger
- Centre for Invasion Biology, University of KwaZulu-Natal, Pietermaritzburg, South Africa
| | - Peter J. Prentis
- School of Earth, Environmental and Biological Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Andrew J. Lowe
- Australian Centre for Evolutionary Biology and Biodiversity, University of Adelaide, Adelaide, South Australia, Australia
- * E-mail:
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de Waal C, Rodger JG, Anderson B, Ellis AG. Selfing ability and dispersal are positively related, but not affected by range position: a multispecies study on southern African Asteraceae. J Evol Biol 2014; 27:950-9. [PMID: 24735437 DOI: 10.1111/jeb.12368] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [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: 08/12/2013] [Revised: 02/19/2014] [Accepted: 03/07/2014] [Indexed: 11/30/2022]
Abstract
Dispersal and breeding system traits are thought to affect colonization success. As species have attained their present distribution ranges through colonization, these traits may vary geographically. Although several theories predict associations between dispersal ability, selfing ability and the relative position of a population within its geographic range, there is little theoretical or empirical consensus on exactly how these three variables are related. We investigated relationships between dispersal ability, selfing ability and range position across 28 populations of 13 annual, wind-dispersed Asteraceae species from the Namaqualand region of South Africa. Controlling for phylogeny, relative dispersal ability--assessed from vertical fall time of fruits--was positively related to an index of autofertility--determined from hand-pollination experiments. These findings support the existence of two discrete syndromes: high selfing ability associated with good dispersal and obligate outcrossing associated with lower dispersal ability. This is consistent with the hypothesis that selection for colonization success drives the evolution of an association between these traits. However, no general effect of range position on dispersal or breeding system traits was evident. This suggests selection on both breeding system and dispersal traits acts consistently across distribution ranges.
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Affiliation(s)
- C de Waal
- Department of Botany and Zoology, University of Stellenbosch, Matieland, 7601, South Africa
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8
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Rodger JG, van Kleunen M, Johnson SD. Pollinators, mates and Allee effects: the importance of self-pollination for fecundity in an invasive lily. Funct Ecol 2013. [DOI: 10.1111/1365-2435.12093] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- James G. Rodger
- Centre for Invasion Biology; School of Life Sciences; University of KwaZulu-Natal; Pietermaritzburg 3209; South Africa
| | - Mark van Kleunen
- Ecology; Department of Biology; University of Konstanz; Universitätsstrasse 10; D-78457 Konstanz; Germany
| | - Steven D. Johnson
- Centre for Invasion Biology; School of Life Sciences; University of KwaZulu-Natal; Pietermaritzburg 3209; South Africa
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Gibson MR, Richardson DM, Marchante E, Marchante H, Rodger JG, Stone GN, Byrne M, Fuentes-Ramírez A, George N, Harris C, Johnson SD, Roux JJL, Miller JT, Murphy DJ, Pauw A, Prescott MN, Wandrag EM, Wilson JRU. Reproductive biology of Australian acacias: important mediator of invasiveness? DIVERS DISTRIB 2011. [DOI: 10.1111/j.1472-4642.2011.00808.x] [Citation(s) in RCA: 125] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Jordinson R, Arnold S, Hinde B, Miller GF, Rodger JG, Kitchin AH. Steady state transport function analysis of portions of the central circulation in man. Comput Biomed Res 1976; 9:291-305. [PMID: 780048 DOI: 10.1016/0010-4809(76)90008-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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