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Zhao W, Xue Z, Liu T, Wang H, Han Z. Factors affecting establishment and population growth of the invasive weed Ambrosia artemisiifolia. FRONTIERS IN PLANT SCIENCE 2023; 14:1251441. [PMID: 37810382 PMCID: PMC10556694 DOI: 10.3389/fpls.2023.1251441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Accepted: 09/05/2023] [Indexed: 10/10/2023]
Abstract
Ambrosia artemisiifolia is a highly invasive weed. Identifying the characteristics and the factors influencing its establishment and population growth may help to identify high invasion risk areas and facilitate monitoring and prevention efforts. Six typical habitats: river banks, forests, road margins, farmlands, grasslands, and wastelands, were selected from the main distribution areas of A. artemisiifolia in the Yili Valley, China. Six propagule quantities of A. artemisiifolia at 1, 5, 10, 20, 50, and 100 seeds m-2 were seeded by aggregation, and dispersion in an area without A. artemisiifolia. Using establishment probability models and Allee effect models, we determined the minimum number of seeds and plants required for the establishment and population growth of A. artemisiifolia, respectively. We also assessed the moisture threshold requirements for establishment and survival, and the influence of native species. The influence of propagule pressure on the establishment of A. artemisiifolia was significant. The minimum number of seeds required varied across habitats, with the lowest being 60 seeds m-2 for road margins and the highest being 398 seeds for forests. The minimum number of plants required for population growth in each habitat was 5 and the largest number was 43 in pasture. The aggregation distribution of A. artemisiifolia resulted in a higher establishment and survival rate. The minimum soil volumetric water content required for establishment was significantly higher than that required for survival. The presence of native dominant species significantly reduced the establishment and survival rate of A. artemisiifolia. A. artemisiifolia has significant habitat selectivity and is more likely to establish successfully in a habitat with aggregated seeding with sufficient water and few native species. Establishment requires many seeds but is less affected by the Allee effect after successful establishment, and only a few plants are needed to ensure reproductive success and population growth in the following year. Monitoring should be increased in high invasion risk habitats.
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Affiliation(s)
- Wenxuan Zhao
- College of Life Science, Shihezi University, Shihezi, China
- Xinjiang Production and Construction Corps Key Laboratory of Oasis Town and Mountain-basin System Ecology, Shihezi, China
| | - Zhifang Xue
- College of Life Science, Shihezi University, Shihezi, China
- Xinjiang Production and Construction Corps Key Laboratory of Oasis Town and Mountain-basin System Ecology, Shihezi, China
| | - Tong Liu
- College of Life Science, Shihezi University, Shihezi, China
- Xinjiang Production and Construction Corps Key Laboratory of Oasis Town and Mountain-basin System Ecology, Shihezi, China
| | - Hanyue Wang
- College of Life Science, Shihezi University, Shihezi, China
- Xinjiang Production and Construction Corps Key Laboratory of Oasis Town and Mountain-basin System Ecology, Shihezi, China
| | - Zhiquan Han
- Xinjiang Production and Construction Corps Key Laboratory of Oasis Town and Mountain-basin System Ecology, Shihezi, China
- College of Science, Shihezi University, Shihezi, China
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Carrell JD, Phinney AI, Mueller K, Bean B. Multiscale ecological niche modeling exhibits varying climate change impacts on habitat suitability of Madrean Pine-Oak trees. Front Ecol Evol 2023. [DOI: 10.3389/fevo.2023.1086062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023] Open
Abstract
Anthropogenic climate change and increasing greenhouse gas emissions are expected to globally impact the biological function, community structure, and spatial distribution of biodiversity. Many existing studies explore the effect of climate change on biodiversity, generally at a single spatial scale. This study explores the potential effects of climate change on the habitat suitability of seven tree species at two distinct spatial scales: the Coronado National Forest (CNF), a local management area, and the Sierra Madre Occidental (SMO), an ecoregional extent. Habitat suitability was determined by extrapolating Ecological Niche Models (ENMs) based on citizen-science tree occurrence records into future climatic conditions using projected 30-year normals for two anthropogenic emissions scenarios through the end of the century. These ENMs, examined at a spatial resolution of 1 km2, are constructed using a mean average ensemble of three commonly used machine learning algorithms. The results show that habitat suitability is expected to decrease for all seven tree species at varying degrees. Results also show that climate-forcing scenario choice appears to be far less important for understanding changes in species habitat suitability than the spatial scale of modeling extent. Additionally, we observed non-linear changes in tree species habitat suitability within the SMO and CNF dependent on forest community type, latitude, and elevational gradient. The paper concludes with a discussion of the necessary steps to verify the estimated alters of these tree species under climate change. Most importantly, provides a framework for characterizing habitat suitability across spatial scales.
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Hancock LMS, Stinson KA. Trait variation and long-term population dynamics of the invasive Alliaria petiolata (garlic mustard) across three microhabitats. Biol Invasions 2023. [DOI: 10.1007/s10530-022-02990-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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4
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Rayment J, French K, Bedward M. Understanding patterns and pathways of exotic perennial grass invasion in South‐eastern Australian grassy communities. DIVERS DISTRIB 2022. [DOI: 10.1111/ddi.13520] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Affiliation(s)
- Julia Rayment
- Centre for Sustainable Ecosystem Services School of Earth, Atmospheric and Life Sciences University of Wollongong New South WalesAustralia
| | - Kris French
- Centre for Sustainable Ecosystem Services School of Earth, Atmospheric and Life Sciences University of Wollongong New South WalesAustralia
| | - Michael Bedward
- Centre for Sustainable Ecosystem Services School of Earth, Atmospheric and Life Sciences University of Wollongong New South WalesAustralia
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Moura RF, Queiroga D, Vilela E, Moraes AP. Polyploidy and high environmental tolerance increase the invasive success of plants. JOURNAL OF PLANT RESEARCH 2021; 134:105-114. [PMID: 33155178 DOI: 10.1007/s10265-020-01236-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 10/19/2020] [Indexed: 05/07/2023]
Abstract
Ploidy level and genome size (GS) could affect the invasive capacity of plants, although these parameters can be contradictory. While small GS seems to favor dispersion, polyploidy-which increases the GS-also seems to favor it. Using a phylogenetic path analysis, we evaluated the effects of both factors on the environmental tolerance and invasive success of plants. We selected 99 invasive plant species from public online databases and gathered information about invasive capacity (number of non-original countries in which each species occurs), tolerance to environmental factors, ploidy level, and GS. The invasive capacity varied depending on the ploidy level and tolerance to environmental factors. Polyploids and species with increased tolerance to elevated temperatures and rainfall values exhibited high invasive capacity. We found no evidence that GS affects the invasive capacity of plants. We suggest that the genetic variability provided by polyploidization has a positive impact on plant competitiveness, which may ultimately lead to an increased ability to colonize new environments. In a global warming scenario, integrative approaches using phenotypic, genetic, epigenetic, and ecological traits should be a productive route to unveil the aspects of invasive plants.
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Affiliation(s)
- Renan Fernandes Moura
- Programa de Pós-Graduação em Ecologia e Conservação de Recursos Naturais, Universidade Federal de Uberlândia, Uberlândia, MG, 38402-020, Brazil.
| | - Drielly Queiroga
- Programa de Pós-Graduação em Entomologia, Universidade de São Paulo, Ribeirão Preto, SP, 14040-900, Brazil
| | - Egon Vilela
- Programa de Pós-Graduação em Ecologia e Evolução, Universidade Federal de Goiás, Goiânia, GO, 74690-900, Brazil
| | - Ana Paula Moraes
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, São Bernardo do Campo, SP, 09606-070, Brazil
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Cruzan MB, Hendrickson EC. Landscape Genetics of Plants: Challenges and Opportunities. PLANT COMMUNICATIONS 2020; 1:100100. [PMID: 33367263 PMCID: PMC7748010 DOI: 10.1016/j.xplc.2020.100100] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 06/03/2020] [Accepted: 07/17/2020] [Indexed: 05/06/2023]
Abstract
Dispersal is one of the most important but least understood processes in plant ecology and evolutionary biology. Dispersal of seeds maintains and establishes populations, and pollen and seed dispersal are responsible for gene flow within and among populations. Traditional views of dispersal and gene flow assume models that are governed solely by geographic distance and do not account for variation in dispersal vector behavior in response to heterogenous landscapes. Landscape genetics integrates population genetics with Geographic Information Systems (GIS) to evaluate the effects of landscape features on gene flow patterns (effective dispersal). Surprisingly, relatively few landscape genetic studies have been conducted on plants. Plants present advantages because their populations are stationary, allowing more reliable estimates of the effects of landscape features on effective dispersal rates. On the other hand, plant dispersal is intrinsically complex because it depends on the habitat preferences of the plant and its pollen and seed dispersal vectors. We discuss strategies to assess the separate contributions of pollen and seed movement to effective dispersal and to delineate the effects of plant habitat quality from those of landscape features that affect vector behavior. Preliminary analyses of seed dispersal for three species indicate that isolation by landscape resistance is a better predictor of the rates and patterns of dispersal than geographic distance. Rates of effective dispersal are lower in areas of high plant habitat quality, which may be due to the effects of the shape of the dispersal kernel or to movement behaviors of biotic vectors. Landscape genetic studies in plants have the potential to provide novel insights into the process of gene flow among populations and to improve our understanding of the behavior of biotic and abiotic dispersal vectors in response to heterogeneous landscapes.
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Liu YY, Sun Y, Müller-Schärer H, Yan R, Zhou ZX, Wang YJ, Yu FH. Do invasive alien plants differ from non-invasives in dominance and nitrogen uptake in response to variation of abiotic and biotic environments under global anthropogenic change? THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 672:634-642. [PMID: 30974355 DOI: 10.1016/j.scitotenv.2019.04.024] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Revised: 04/01/2019] [Accepted: 04/01/2019] [Indexed: 06/09/2023]
Abstract
Plant invasion is the outcome of complicated interactions of both biotic and abiotic environments (i.e. eutrophication and human-induced propagules) under global anthropogenic change. Here, we want to know why some alien clonal plant species become invasive and others do not in the introduced range with variations of both abiotic and biotic environments under global anthropogenic change. We selected three invasive alien and three co-occurring, non-invasive alien clonal plant species in China, and grew them under the constant or variable soil nutrient environments in a native community with low or high vegetative propagule pressure (i.e. simulating pressure of anthropogenic alien propagules). Invasive alien species produced more biomass than non-invasives. Interestingly, invasive species benefited significantly greater from high propagule pressure than non-invasives. Biomass and evenness of native communities were greater with non-invasive than with invasive target species. Invasive plants showed a greater increase of leaf N and decrease of leaf C: N ratio when subject to variable nutrients in comparison to constant nutrients than non-invasives. The negative effects of variable nutrients on evenness of native communities were significantly greater under invasive than non-invasive target species. Moreover, biomass of native communities was significantly negatively related to biomass of invasive species. Variable nutrients significantly promoted the negative biomass relationship between non-invasive species and native communities under high propagule pressure and the negative biomass-evenness relationship between invasive species and native communities. Our study suggests that soil nutrient variability and vegetative propagule pressure influence the growth and leaf C and N uptake of alien clonal plant species in native experimental communities, especially under the high propagule pressure and nutrient variability. Invasive alien clonal species have higher performance and advantages over non-invasives. Future studies should also test the mechanisms that invasive and non-invasive or native plants differ in native communities of native or introduced ranges in the field.
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Affiliation(s)
- Yuan-Yuan Liu
- College of Horticulture and Forestry Sciences, Hubei Engineering Technology Research Center for Forestry Information, Huazhong Agricultural University, Wuhan 430070, China
| | - Yan Sun
- Department of Biology, University of Fribourg, Chemin du Musée 10, Fribourg 1700, Switzerland
| | - Heinz Müller-Schärer
- Department of Biology, University of Fribourg, Chemin du Musée 10, Fribourg 1700, Switzerland
| | - Rong Yan
- College of Horticulture and Forestry Sciences, Hubei Engineering Technology Research Center for Forestry Information, Huazhong Agricultural University, Wuhan 430070, China
| | - Zhi-Xiang Zhou
- College of Horticulture and Forestry Sciences, Hubei Engineering Technology Research Center for Forestry Information, Huazhong Agricultural University, Wuhan 430070, China
| | - Yong-Jian Wang
- College of Horticulture and Forestry Sciences, Hubei Engineering Technology Research Center for Forestry Information, Huazhong Agricultural University, Wuhan 430070, China.
| | - Fei-Hai Yu
- Institute of Wetland Ecology & Clone Ecology, Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou 318000, China
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Hovick SM, Whitney KD. Propagule pressure and genetic diversity enhance colonization by a ruderal species: a multi‐generation field experiment. ECOL MONOGR 2019. [DOI: 10.1002/ecm.1368] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Stephen M. Hovick
- Department of Evolution, Ecology, and Organismal Biology The Ohio State University Columbus Ohio 43210 USA
| | - Kenneth D. Whitney
- Department of Biology University of New Mexico Albuquerque New Mexico 87131 USA
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9
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Ribeiro FS, Nichols E, Morato RG, Metzger JP, Pardini R. Disturbance or propagule pressure? Unravelling the drivers and mapping the intensity of invasion of free‐ranging dogs across the Atlantic forest hotspot. DIVERS DISTRIB 2018. [DOI: 10.1111/ddi.12845] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Affiliation(s)
- Fernando S. Ribeiro
- Departamento de Ecologia Instituto de Biociências Universidade de São Paulo São Paulo São Paulo Brazil
| | | | - Ronaldo G. Morato
- Centro Nacional de Pesquisa e Conservação de Mamíferos Carnívoros Instituto Chico Mendes de Conservação da Biodiversidade Atibaia São Paulo Brazil
| | - Jean Paul Metzger
- Departamento de Ecologia Instituto de Biociências Universidade de São Paulo São Paulo São Paulo Brazil
| | - Renata Pardini
- Departamento de Zoologia Instituto de Biociências Universidade de São Paulo São Paulo São Paulo Brazil
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10
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Influence of seed size on performance of non-native annual plant species in a novel community at two planting densities. ACTA OECOLOGICA 2018. [DOI: 10.1016/j.actao.2018.05.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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11
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Goczal J, Rossa R, Nawrocka A, Sweeney JD, Tofilski A. Developmental Costs of Biological Invasion: The Exotic Wood Borer Tetropium fuscum (Coleoptera: Cerambycidae) is More Asymmetric and Smaller in Invaded Area. ENVIRONMENTAL ENTOMOLOGY 2018; 47:982-989. [PMID: 29684113 DOI: 10.1093/ee/nvy059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Indexed: 06/08/2023]
Abstract
Biological invasions provide a unique opportunity to gain insight into basic biological processes occurring under new circumstances. During the process of establishment, exotic species are exposed to various stressors which may affect their development. Presence of the stressors is often detected by measurements of left-right body asymmetry, which consists of two main components: fluctuating asymmetry and directional asymmetry. Fluctuating asymmetry constitutes random differences between the two body sides, whereas directional asymmetry occurs when a particular trait is bigger on one of the sides. The relation between these two asymmetry components is still not fully understood. Our goal was to investigate the potential differences in asymmetry patterns between native and invasive populations of Tetropium fuscum (Fabr. 1787) (Coleoptera: Cerambycidae), a harmful forest pest native to Europe and introduced to North America. Wing asymmetry assessment was based on the geometric morphometrics of hind wings. We found that specimens from invaded area were markedly smaller and have more asymmetric wings than individuals from native population, suggesting some unfavorable conditions in the invaded area. Moreover, we found significant directional asymmetry in the native but not in the invasive population. On the other hand, differences between left and right hind wings were similar in the native and invasive populations, in terms of direction. This suggests that a high level of fluctuating asymmetry in the invasive population may blur the intrinsic directional asymmetry and hinder its detection. Our data show that fluctuating asymmetry has a potential as an indicator of developmental stress in invasive species.
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Affiliation(s)
- Jakub Goczal
- Institute of Forest Ecosystem Protection, University of Agriculture in Krakow, Krakow, Poland
| | - Robert Rossa
- Institute of Forest Ecosystem Protection, University of Agriculture in Krakow, Krakow, Poland
| | - Anna Nawrocka
- Department of Pomology and Apiculture, University of Agriculture in Krakow, Krakow, Poland
| | - Jon David Sweeney
- Natural Resources Canada, Canadian Forest Service, Fredericton, NB, Canada
| | - Adam Tofilski
- Department of Pomology and Apiculture, University of Agriculture in Krakow, Krakow, Poland
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12
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Uyà M, Bulleri F, Gribben PE. Propagules are not all equal: traits of vegetative fragments and disturbance regulate invasion success. Ecology 2018; 99:957-965. [DOI: 10.1002/ecy.2168] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 11/09/2017] [Accepted: 01/16/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Marc Uyà
- Dipartimento di Biologia Università di Pisa Via Derna 1 Pisa 56126 Italy
- Centre for Marine Bio‐Innovation School of Biological, Earth and Environmental Sciences University of New South Wales New South Wales 2052 Australia
| | - Fabio Bulleri
- Dipartimento di Biologia Università di Pisa Via Derna 1 Pisa 56126 Italy
- CoNISMa Consorzio Nazionale Interuniversitario per le Scienze del Mare Piazzale Flaminio 9 Roma 00196 Italy
| | - Paul E. Gribben
- Centre for Marine Bio‐Innovation School of Biological, Earth and Environmental Sciences University of New South Wales New South Wales 2052 Australia
- Sydney Institute of Marine Science 19 Chowder Bay Road Mosman New South Wales 2088 Australia
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13
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14
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Byun C, de Blois S, Brisson J. Management of invasive plants through ecological resistance. Biol Invasions 2017. [DOI: 10.1007/s10530-017-1529-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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Craig ME, Fraterrigo JM. Plant-microbial competition for nitrogen increases microbial activities and carbon loss in invaded soils. Oecologia 2017; 184:583-596. [PMID: 28421325 DOI: 10.1007/s00442-017-3861-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Accepted: 03/31/2017] [Indexed: 11/25/2022]
Abstract
Many invasive plant species show high rates of nutrient acquisition relative to their competitors. Yet the mechanisms underlying this phenomenon, and its implications for ecosystem functioning, are poorly understood, particularly in nutrient-limited systems. Here, we test the hypothesis that an invasive plant species (Microstegium vimineum) enhances its rate of nitrogen (N) acquisition by outcompeting soil organic matter-degrading microbes for N, which in turn accelerates soil N and carbon (C) cycling. We estimated plant cover as an indicator of plant N acquisition rate and quantified plant tissue N, soil C and N content and transformations, and extracellular enzyme activities in invaded and uninvaded plots. Under low ambient N availability, invaded plots had 77% higher plant cover and lower tissue C:N ratios, suggesting that invasion increased rates of plant N acquisition. Concurrent with this pattern, we observed significantly higher mass-specific enzyme activities in invaded plots as well as 71% higher long-term N availability, 21% lower short-term N availability, and 16% lower particulate organic matter N. A structural equation model showed that these changes were interrelated and associated with 27% lower particulate organic matter C in invaded areas. Our findings suggest that acquisition of N by this plant species enhances microbial N demand, leading to an increased flux of N from organic to inorganic forms and a loss of soil C. We conclude that high N acquisition rates by invasive plants can drive changes in soil N cycling that are linked to effects on soil C.
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Affiliation(s)
- Matthew E Craig
- Department of Natural Resources and Environmental Sciences, University of Illinois at Urbana-Champaign, 1102 S Goodwin, Urbana, IL, 61801, USA.
- Department of Biology, Indiana University, 1001 E Third St, Bloomington, IN, 47405, USA.
| | - Jennifer M Fraterrigo
- Department of Natural Resources and Environmental Sciences, University of Illinois at Urbana-Champaign, 1102 S Goodwin, Urbana, IL, 61801, USA
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Lewis JS, Farnsworth ML, Burdett CL, Theobald DM, Gray M, Miller RS. Biotic and abiotic factors predicting the global distribution and population density of an invasive large mammal. Sci Rep 2017; 7:44152. [PMID: 28276519 PMCID: PMC5343451 DOI: 10.1038/srep44152] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 02/03/2017] [Indexed: 12/02/2022] Open
Abstract
Biotic and abiotic factors are increasingly acknowledged to synergistically shape broad-scale species distributions. However, the relative importance of biotic and abiotic factors in predicting species distributions is unclear. In particular, biotic factors, such as predation and vegetation, including those resulting from anthropogenic land-use change, are underrepresented in species distribution modeling, but could improve model predictions. Using generalized linear models and model selection techniques, we used 129 estimates of population density of wild pigs (Sus scrofa) from 5 continents to evaluate the relative importance, magnitude, and direction of biotic and abiotic factors in predicting population density of an invasive large mammal with a global distribution. Incorporating diverse biotic factors, including agriculture, vegetation cover, and large carnivore richness, into species distribution modeling substantially improved model fit and predictions. Abiotic factors, including precipitation and potential evapotranspiration, were also important predictors. The predictive map of population density revealed wide-ranging potential for an invasive large mammal to expand its distribution globally. This information can be used to proactively create conservation/management plans to control future invasions. Our study demonstrates that the ongoing paradigm shift, which recognizes that both biotic and abiotic factors shape species distributions across broad scales, can be advanced by incorporating diverse biotic factors.
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Affiliation(s)
- Jesse S. Lewis
- Conservation Science Partners, 5 Old Town Sq, Suite 205, Fort Collins, Colorado, 80524, USA
| | - Matthew L. Farnsworth
- Conservation Science Partners, 5 Old Town Sq, Suite 205, Fort Collins, Colorado, 80524, USA
| | - Chris L. Burdett
- Colorado State University, Department of Biology, Fort Collins, Colorado, 80524, USA
| | - David M. Theobald
- Conservation Science Partners, 5 Old Town Sq, Suite 205, Fort Collins, Colorado, 80524, USA
| | - Miranda Gray
- Conservation Science Partners, 11050 Pioneer Trail, Suite 202, Truckee, California, 96161, USA
| | - Ryan S. Miller
- United States Department of Agriculture, Animal and Plant Health Inspection Service, Veterinary Services, Center for Epidemiology and Animal Health, Fort Collins, Colorado, 80524, USA
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17
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Abiotic barriers limit tree invasion but do not hamper native shrub recruitment in invaded stands. Biol Invasions 2016. [DOI: 10.1007/s10530-016-1267-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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18
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19
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Oldfather MF, Britton MN, Papper PD, Koontz MJ, Halbur MM, Dodge C, Flint AL, Flint LE, Ackerly DD. Effects of topoclimatic complexity on the composition of woody plant communities. AOB PLANTS 2016; 8:plw049. [PMID: 27339048 PMCID: PMC4972463 DOI: 10.1093/aobpla/plw049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 06/10/2016] [Indexed: 06/06/2023]
Abstract
Topography can create substantial environmental variation at fine spatial scales. Shaped by slope, aspect, hill-position and elevation, topoclimate heterogeneity may increase ecological diversity, and act as a spatial buffer for vegetation responding to climate change. Strong links have been observed between climate heterogeneity and species diversity at broader scales, but the importance of topoclimate for woody vegetation across small spatial extents merits closer examination. We established woody vegetation monitoring plots in mixed evergreen-deciduous woodlands that spanned topoclimate gradients of a topographically heterogeneous landscape in northern California. We investigated the association between the structure of adult and regenerating size classes of woody vegetation and multidimensional topoclimate at a fine scale. We found a significant effect of topoclimate on both single-species distributions and community composition. Effects of topoclimate were evident in the regenerating size class for all dominant species (four Quercus spp., Umbellularia californica and Pseudotsuga menziesii) but only in two dominant species (Quercus agrifolia and Quercus garryana) for the adult size class. Adult abundance was correlated with water balance parameters (e.g. climatic water deficit) and recruit abundance was correlated with an interaction between the topoclimate parameters and conspecific adult abundance (likely reflecting local seed dispersal). However, in all cases, the topoclimate signal was weak. The magnitude of environmental variation across our study site may be small relative to the tolerance of long-lived woody species. Dispersal limitations, management practices and patchy disturbance regimes also may interact with topoclimate, weakening its influence on woody vegetation distributions. Our study supports the biological relevance of multidimensional topoclimate for mixed woodland communities, but highlights that this relationship might be mediated by interacting factors at local scales.
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Affiliation(s)
- Meagan F Oldfather
- Department of Integrative Biology, University of California, Berkeley, CA 94720, USA
| | - Matthew N Britton
- Department of Biological Sciences and Bolus Herbarium, University of Cape Town, Private Bag, Rondebosch 7700, South Africa
| | - Prahlad D Papper
- Department of Integrative Biology, University of California, Berkeley, CA 94720, USA
| | - Michael J Koontz
- Department of Plant Sciences, University of California Davis, Davis, CA 95618, USA
| | - Michelle M Halbur
- Pepperwood Preserve, 2130 Pepperwood Preserve Road Santa Rosa, CA 95404, USA
| | - Celeste Dodge
- Pepperwood Preserve, 2130 Pepperwood Preserve Road Santa Rosa, CA 95404, USA
| | - Alan L Flint
- Water Resources Discipline, U.S. Geological Survey, Placer Hall, 6000 J Street, Sacramento, CA 95819, USA
| | - Lorriane E Flint
- Water Resources Discipline, U.S. Geological Survey, Placer Hall, 6000 J Street, Sacramento, CA 95819, USA
| | - David D Ackerly
- Department of Integrative Biology, University of California, Berkeley, CA 94720, USA Jepson Herbarium, University of California, Berkeley, CA 94720, USA
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20
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Pereyra PJ. Revisiting the use of the invasive species concept: An empirical approach. AUSTRAL ECOL 2016. [DOI: 10.1111/aec.12340] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Patricio Javier Pereyra
- Instituto de Biología Marina y Pesquera Almirante Storni (IBMPAS); San Antonio Oeste Río Negro Argentina
- CONICET; Ciudad Autónoma de Buenos Aires Argentina
- Escuela Superior de Ciencias Marinas; Universidad Nacional del Comahue; Río Negro Argentina
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Stricker KB, Harmon PF, Goss EM, Clay K, Luke Flory S. Emergence and accumulation of novel pathogens suppress an invasive species. Ecol Lett 2016; 19:469-77. [DOI: 10.1111/ele.12583] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 01/05/2016] [Accepted: 01/22/2016] [Indexed: 11/29/2022]
Affiliation(s)
| | - Philip F. Harmon
- Plant Pathology Department; University of Florida; Gainesville FL 32611
| | - Erica M. Goss
- Plant Pathology Department; University of Florida; Gainesville FL 32611
- Emerging Pathogens Institute; University of Florida; Gainesville FL 32610
| | - Keith Clay
- Department of Biology; Indiana University; Bloomington IN 47405
| | - S. Luke Flory
- Agronomy Department; University of Florida; Gainesville FL 32611
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You WH, Han CM, Fang LX, Du DL. Propagule Pressure, Habitat Conditions and Clonal Integration Influence the Establishment and Growth of an Invasive Clonal Plant, Alternanthera philoxeroides. FRONTIERS IN PLANT SCIENCE 2016; 7:568. [PMID: 27200041 PMCID: PMC4853405 DOI: 10.3389/fpls.2016.00568] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 04/13/2016] [Indexed: 05/17/2023]
Abstract
Many notorious invasive plants are clonal, spreading mainly by vegetative propagules. Propagule pressure (the number of propagules) may affect the establishment, growth, and thus invasion success of these clonal plants, and such effects may also depend on habitat conditions. To understand how propagule pressure, habitat conditions and clonal integration affect the establishment and growth of the invasive clonal plants, an 8-week greenhouse with an invasive clonal plant, Alternanthera philoxeroides was conducted. High (five fragments) or low (one fragment) propagule pressure was established either in bare soil (open habitat) or dense native vegetation of Jussiaea repens (vegetative habitat), with the stolon connections either severed from or connected to the relatively older ramets. High propagule pressure greatly increased the establishment and growth of A. philoxeroides, especially when it grew in vegetative habitats. Surprisingly, high propagule pressure significantly reduced the growth of individual plants of A. philoxeroides in open habitats, whereas it did not affect the individual growth in vegetative habitats. A shift in the intraspecific interaction on A. philoxeroides from competition in open habitats to facilitation in vegetative habitats may be the main reason. Moreover, clonal integration significantly improved the growth of A. philoxeroides only in open habitats, especially with low propagule pressure, whereas it had no effects on the growth and competitive ability of A. philoxeroides in vegetative habitats, suggesting that clonal integration may be of most important for A. philoxeroides to explore new open space and spread. These findings suggest that propagule pressure may be crucial for the invasion success of A. philoxeroides, and such an effect also depends on habitat conditions.
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Affiliation(s)
| | | | | | - Dao-Lin Du
- *Correspondence: Wen-Hua You, ; Dao-Lin Du,
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23
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Synergistic effects of propagule pressure and trophic subsidies overcome biotic resistance to a non-native fish. Biol Invasions 2015. [DOI: 10.1007/s10530-015-0938-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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25
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Wilson CH, Caughlin TT, Civitello DJ, Flory SL. Combining mesocosm and field experiments to predict invasive plant performance: a hierarchical Bayesian approach. Ecology 2015; 96:1084-92. [PMID: 26230028 DOI: 10.1890/14-0797.1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Invasive plant fecundity underlies propagule pressure and ultimately range expansion. Predicting fecundity across large spatial scales, from regions to landscapes, is critical for understanding invasion dynamics and optimizing management. However, to accurately predict fecundity and other demographic processes, improved models that scale individual plant responses to abiotic drivers across heterogeneous environments are needed. Here we combine two experimental data sets to predict fecundity of a widespread and problematic invasive grass over large spatial scales. First, we analyzed seed production as a function of plant biomass in a small-scale mesocosm experiment with manipulated light levels. Then, in a field introduction experiment, we tracked plant performance across 21 common garden sites that differed widely in available light and other factors. We jointly analyzed these data using a Bayesian hierarchical model (BHM) framework to predict fecundity as a function of light in the field. Our analysis reveals that the invasive species is likely to produce sufficient seed to overwhelm establishment resistance, even in deeply shaded environments, and is likely seed-limited across much of its range. Finally, we extend this framework to address the general problem of how to scale up plant demographic processes and analyze the factors that control plant distribution and abundance at large scales.
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Roth AM, Whitfeld TJS, Lodge AG, Eisenhauer N, Frelich LE, Reich PB. Invasive earthworms interact with abiotic conditions to influence the invasion of common buckthorn (Rhamnus cathartica). Oecologia 2014; 178:219-30. [PMID: 25481818 DOI: 10.1007/s00442-014-3175-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Accepted: 11/25/2014] [Indexed: 12/01/2022]
Abstract
Common buckthorn (Rhamnus cathartica L.) is one of the most abundant and ecologically harmful non-native plants in forests of the Upper Midwest United States. At the same time, European earthworms are invading previously glaciated areas in this region, with largely anecdotal evidence suggesting they compound the negative effects of buckthorn and influence the invasibility of these forests. Germination and seedling establishment are important control points for colonization by any species, and manipulation of the conditions influencing these life history stages may provide insight into why invasive species are successful in some environments and not others. Using a greenhouse microcosm experiment, we examined the effects of important biotic and abiotic factors on the germination and seedling establishment of common buckthorn. We manipulated light levels, leaf litter depth and earthworm presence to investigate the independent and interactive effects of these treatments on buckthorn establishment. We found that light and leaf litter depth were significant predictors of buckthorn germination but that the presence of earthworms was the most important factor; earthworms interacted with light and leaf litter to increase the number and biomass of buckthorn across all treatments. Path analysis suggested both direct and moisture-mediated indirect mechanisms controlled these processes. The results suggest that the action of earthworms may provide a pathway through which buckthorn invades forests of the Upper Midwest United States. Hence, researchers and managers should consider co-invasion of plants and earthworms when investigating invasibility and creating preemptive or post-invasion management plans.
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Affiliation(s)
- Alexander M Roth
- Department of Forest Resources, University of Minnesota, 1530 Cleveland Avenue North, St Paul, MN, 55108-6112, USA,
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27
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Abstract
Ephemeral disturbances are common in many systems. Often, these brief events are assumed to be a nuisance with little long-term ecological impact. We quantified the impact of the ephemeral forest disturbance caused by gypsy moth canopy defoliation on exotic plant invasion in eight hardwood forests in the Delaware Water Gap National Recreation Area, USA. Six years following the gypsy moth disturbance, we were able to predict 59% of the increase in Alliaria petiolata abundance and 42% of the increase in Microstegium vimineum abundance with models incorporating an interaction between disturbance severity and propagule pressure. In addition, we found that the disturbance timing had substantial impacts on the invasion dynamics of Alliaria petiolata. Our results suggest that ephemeral disturbances can have important and long-lasting impacts on plant communities, and highlight the need to account for variations in disturbance characteristics and the role of propagule pressure in determining the disturbance-invasion relationship.
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Effects of vegetative propagule pressure on the establishment of an introduced clonal plant, Hydrocotyle vulgaris. Sci Rep 2014; 4:5507. [PMID: 24981102 PMCID: PMC4076911 DOI: 10.1038/srep05507] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Accepted: 06/09/2014] [Indexed: 11/11/2022] Open
Abstract
Some introduced clonal plants spread mainly by vegetative (clonal) propagules due to the absence of sexual reproduction in the introduced range. Propagule pressure (i.e. total number of propagules) may affect the establishment and thus invasion success of introduced clonal plants, and such effects may also depend on habitat conditions. A greenhouse experiment with an introduced plant, Hydrocotyle vulgaris was conducted to investigate the role of propagule pressure on its invasion process. High (five ramets) or low (one ramet) propagule pressure was established either in bare soil or in an experimental plant community consisting of four grassland species. H. vulgaris produced more total biomass under high than under low propagule pressure in both habitat conditions. Interestingly, the size of the H. vulgaris individuals was smaller under high than under low propagule pressure in bare soil, whereas it did not differ between the two propagule pressure treatments in the grassland community. The results indicated that high propagule pressure can ensure the successful invasion in either the grass community or bare soil, and the shift in the intraspecific interaction of H. vulgaris from competition in the bare soil to facilitation in the grassland community may be a potential mechanism.
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Britton JR, Gozlan RE. How many founders for a biological invasion? Predicting introduction outcomes from propagule pressure. Ecology 2014; 94:2558-66. [PMID: 24400507 DOI: 10.1890/13-0527.1] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Ecological theory on biological invasions attempts to characterize the predictors of invasion success and the relative importance of the different drivers of population establishment. An outstanding question is how propagule pressure determines the probability of population establishment, where propagule pressure is the number of individuals of a species introduced into a specific location (propagule size) and their frequency of introduction (propagule number). Here, we used large-scale replicated mesocosm ponds over three reproductive seasons to identify how propagule size and number predict the probability of establishment of one of world's most invasive fish, Pseudorasbora parva, as well as its effect on the somatic growth of individuals during establishment. We demonstrated that, although a threshold of 11 introduced pairs of fish (a pair is 1 male, 1 female) was required for establishment probability to exceed 95%, establishment also occurred at low propagule size (1-5 pairs). Although single introduction events were as effective as multiple events at enabling establishment, the propagule sizes used in the multiple introductions were above the detected threshold for establishment. After three reproductive seasons, population abundance was also a function of propagule size, with rapid increases in abundance only apparent when propagule size exceeded 25 pairs. This was initially assisted by adapted biological traits, including rapid individual somatic growth that helped to overcome demographic bottlenecks.
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Affiliation(s)
- John Robert Britton
- Centre for Conservation Ecology and Environmental Science, School of Applied Sciences, Bournemouth University, Poole BH12 5BB, United Kingdom.
| | - Rodolphe Elie Gozlan
- Centre for Conservation Ecology and Environmental Science, School of Applied Sciences, Bournemouth University, Poole BH12 5BB, United Kingdom
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30
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Yeo HHT, Chong KY, Yee ATK, Giam X, Corlett RT, Tan HTW. Leaf litter depth as an important factor inhibiting seedling establishment of an exotic palm in tropical secondary forest patches. Biol Invasions 2013. [DOI: 10.1007/s10530-013-0527-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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31
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Sheffer E, Canham CD, Kigel J, Perevolotsky A. Landscape-scale density-dependent recruitment of oaks in planted forests: More is not always better. Ecology 2013; 94:1718-28. [PMID: 24015516 DOI: 10.1890/12-2121.1] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Efrat Sheffer
- Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot Campus, P.O. Box 12, Rehovot 76100, Israel.
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Oldfield EE, Warren RJ, Felson AJ, Bradford MA. FORUM: Challenges and future directions in urban afforestation. J Appl Ecol 2013. [DOI: 10.1111/1365-2664.12124] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Emily E. Oldfield
- School of Forestry and Environmental Studies Yale University 370 Prospect Street New Haven CT 06511 USA
| | - Robert J. Warren
- Department of Biology SUNY Buffalo State 1300 Elmwood Avenue Buffalo NY 14222 USA
| | - Alexander J. Felson
- School of Forestry and Environmental Studies Yale University 370 Prospect Street New Haven CT 06511 USA
- Yale School of Architecture 180 York Street New Haven CT 06511 USA
| | - Mark A. Bradford
- School of Forestry and Environmental Studies Yale University 370 Prospect Street New Haven CT 06511 USA
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Erfmeier A, Hantsch L, Bruelheide H. The role of propagule pressure, genetic diversity and microsite availability for Senecio vernalis invasion. PLoS One 2013; 8:e57029. [PMID: 23437301 PMCID: PMC3577778 DOI: 10.1371/journal.pone.0057029] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Accepted: 01/20/2013] [Indexed: 11/18/2022] Open
Abstract
Genetic diversity is supposed to support the colonization success of expanding species, in particular in situations where microsite availability is constrained. Addressing the role of genetic diversity in plant invasion experimentally requires its manipulation independent of propagule pressure. To assess the relative importance of these components for the invasion of Senecio vernalis, we created propagule mixtures of four levels of genotype diversity by combining seeds across remote populations, across proximate populations, within single populations and within seed families. In a first container experiment with constant Festuca rupicola density as matrix, genotype diversity was crossed with three levels of seed density. In a second experiment, we tested for effects of establishment limitation and genotype diversity by manipulating Festuca densities. Increasing genetic diversity had no effects on abundance and biomass of S. vernalis but positively affected the proportion of large individuals to small individuals. Mixtures composed from proximate populations had a significantly higher proportion of large individuals than mixtures composed from within seed families only. High propagule pressure increased emergence and establishment of S. vernalis but had no effect on individual growth performance. Establishment was favoured in containers with Festuca, but performance of surviving seedlings was higher in open soil treatments. For S. vernalis invasion, we found a shift in driving factors from density dependence to effects of genetic diversity across life stages. While initial abundance was mostly linked to the amount of seed input, genetic diversity, in contrast, affected later stages of colonization probably via sampling effects and seemed to contribute to filtering the genotypes that finally grew up. In consequence, when disentangling the mechanistic relationships of genetic diversity, seed density and microsite limitation in colonization of invasive plants, a clear differentiation between initial emergence and subsequent survival to juvenile and adult stages is required.
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Affiliation(s)
- Alexandra Erfmeier
- Institute of Biology/Geobotany and Botanical Garden, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.
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Warren RJ, Ursell T, Keiser AD, Bradford MA. Habitat, dispersal and propagule pressure control exotic plant infilling within an invaded range. Ecosphere 2013. [DOI: 10.1890/es12-00393.1] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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35
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Predicting Microstegium vimineum invasion in natural plant communities of the southern Blue Ridge Mountains, USA. Biol Invasions 2012. [DOI: 10.1007/s10530-012-0361-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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36
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