1
|
Pérez-Diz M, Rodríguez-Addesso B, Hussain MI, Rodríguez J, Novoa A, González L. Carbon and nitrogen stable isotope compositions provide new insights into the phenotypic plasticity of the invasive species Carpobrotus sp. pl. in different coastal habitats. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 873:162470. [PMID: 36842586 DOI: 10.1016/j.scitotenv.2023.162470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 02/13/2023] [Accepted: 02/21/2023] [Indexed: 06/18/2023]
Abstract
The genus Carpobrotus N.E.Br. comprises several aggressive invasive species that threaten biodiversity in coastal areas worldwide. We studied the phenotypic plasticity of Carpobrotus sp. pl. invading four coastal habitats in the north-western Iberian Peninsula (coastal cliffs, disturbed areas, dunes and coastal forests). We measured morphological traits and carbon (δ13C) and nitrogen (δ15N) stable isotope compositions of Carpobrotus sp. pl. individuals collected in each habitat. Our results indicated that leaf carbon content (% C) and dry shoot weight were higher on cliffs and lower in mixed forests. In contrast, leaf hydration was higher in mixed forests and lower on cliffs. Leaf nitrogen content (% N) was higher in forests, which might be due to the presence of Acacia longifolia, an alien tree that accumulates N in the soil through symbiotic associations with N fixing bacteria. Differences in δ15N showed the use of different N sources in each habitat. Values were higher in disturbed areas with greater human activity and lower on cliffs and forests. δ13C was higher in cliffs and dunes, suggesting CAM activity where drought and salinity are more intense. Water use efficiency (iWUE) and δ13C were higher on cliffs and dunes, suggesting an adaptation and high tolerance of Carpobrotus sp. pl. to unfavourable conditions such as drought or salinity in the invaded areas.
Collapse
Affiliation(s)
- Marta Pérez-Diz
- Department of Plant Biology and Soil Sciences, Faculty of Biology, Universidade de Vigo, 36310 Vigo, Spain.
| | - Berea Rodríguez-Addesso
- Department of Plant Biology and Soil Sciences, Faculty of Biology, Universidade de Vigo, 36310 Vigo, Spain.
| | - Muhammad Iftikhar Hussain
- Department of Plant Biology and Soil Sciences, Faculty of Biology, Universidade de Vigo, 36310 Vigo, Spain.
| | - Jonatan Rodríguez
- Department of Invasion Ecology, Institute of Botany of the Czech Academy of Sciences, CZ-252 43 Průhonice, Czech Republic; CRETUS, Department of Functional Biology, Faculty of Biology, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - Ana Novoa
- Department of Invasion Ecology, Institute of Botany of the Czech Academy of Sciences, CZ-252 43 Průhonice, Czech Republic.
| | - Luís González
- Department of Plant Biology and Soil Sciences, Faculty of Biology, Universidade de Vigo, 36310 Vigo, Spain.
| |
Collapse
|
2
|
Fallopia japonica and Impatiens glandulifera are colonized by species-poor root-associated fungal communities but have minor impacts on soil properties in riparian habitats. Biol Invasions 2023. [DOI: 10.1007/s10530-023-03034-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
AbstractFallopia japonica and Impatiens glandulifera are major plant invaders on a global scale that often become dominant in riparian areas. However, little is known about how these species affect interactions in soil–plant systems. The aim of this study was to investigate the impact of both species on abiotic and biotic soil properties, with a special focus on fungi. We investigated eight sites along small streams invaded by F. japonica and I. glandulifera, respectively, and compared each with nearby sites dominated by the native species Urtica dioica. Three different types of samples were collected: bulk soil, rhizosphere soil and roots from invasive and native stands at each site. Bulk soil samples were analysed for soil physicochemical, microbial properties (soil microbial respiration and ergosterol) and soil arthropod abundance (Acari and Collembola). Soil respiration was also evaluated in rhizosphere samples. The fungal community composition of both bulk soil and roots were analysed using a metabarcoding approach. Soil physicochemical properties as well as soil microbial activity, fungal biomass and soil fungal operational unit taxonomic unit (OTU) richness did not differ between invaded and native riparian habitats, indicating only minor belowground impacts of the two invasive plant species. Soil microbial activity, fungal biomass and soil fungal OTU richness were rather related to the soil physicochemical properties. In contrast, Acari abundance decreased by 68% in the presence of F. japonica, while Collembola abundance increased by 11% in I. glandulifera sites. Moreover, root-associated fungal communities differed between the invasive and native plants. In F. japonica roots, fungal OTU richness of all investigated ecological groups (mycorrhiza, endophytes, parasites, saprobes) were lower compared to U. dioica. However, in I. glandulifera roots only the OTU richness of mycorrhiza and saprobic fungi was lower. Overall, our findings show that F. japonica and I. glandulifera can influence the abundance of soil arthropods and are characterized by lower OTU richness of root-associated fungi.
Collapse
|
3
|
Nitrate Nitrogen and pH Correlate with Changes in Rhizosphere Microbial Community Assemblages during Invasion of Ambrosia artemisiifolia and Bidens pilosa. Microbiol Spectr 2023; 11:e0364922. [PMID: 36511663 PMCID: PMC9927480 DOI: 10.1128/spectrum.03649-22] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The rhizosphere of invasive plants presumably develops different soil microbial assemblages compared with native plants, which may hinder or promote their invasion. However, to date, no studies have clearly explored rhizosphere microbial community assemblages during invasion. The invasive species Ambrosia artemisiifolia L. and Bidens pilosa L. are widely distributed in China and are known to reduce local biodiversity and cause agricultural losses. Monoculture of A. artemisiifolia or B. pilosa, a mixture of each invasive and native species, and monoculture of native species were established to simulate different degrees of invasion. Metagenomic sequencing techniques were used to test microbial community structure and function. The aim was to explore the drivers of the assembly of peculiar functional microbes in the rhizosphere soil of invasive species during the long-term invasive-native species interaction. Compared with the native species, the relative abundance of 34 microbial genera was higher in the rhizosphere soil of the invasive species. The NO3-N concentration in the rhizosphere soil from the A. artemisiifolia and B. pilosa monocultures was lower than that from monocultures of the three native plants, whereas pH followed the opposite trend. The NO3-N concentration was significantly and negatively correlated with Sporichthya, Afipia, Actinokineospora, and Pseudolabrys. pH was positively correlated with Bradyrhizobium, Actinoplanes, Micromonospora, Steroidobacter, Burkholderia, and Labilithrix. The differences in soil microbes, NO3-N concentrations, and pH between native and invasive species suggest that the rhizosphere soil microbial assemblages may vary. The reduced NO3-N concentration and increased pH corelated with changes in rhizosphere microbial community during A. artemisiifolia and B. pilosa invasion. IMPORTANCE Soil microbial communities play a vital role in the growth of invasive plants. Invasive species may shape peculiar functional microbes in the rhizosphere soil of an invasive species to benefit its growth. However, the drivers of the assembly of soil microbial communities in the rhizosphere soil of invasive species remain unclear. Our study established the relationship between soil microbial communities and soil chemical properties during invasion by A. artemisiifolia and B. pilosa. Additionally, it showed that the presence of the invasive plants correlated with changes in NO3-N and pH, as well as in rhizosphere microbial community assemblage. Furthermore, the study provided important insights into the difference in the microbial community assembly between native and invasive plant species.
Collapse
|
4
|
Variation in defensive traits against herbivores of native and invasive populations of Carpobrotus edulis. Biol Invasions 2022. [DOI: 10.1007/s10530-022-02970-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
5
|
Novoa A, Foxcroft LC, Keet JH, Pyšek P, Le Roux JJ. The invasive cactus Opuntia stricta creates fertility islands in African savannas and benefits from those created by native trees. Sci Rep 2021; 11:20748. [PMID: 34675315 PMCID: PMC8531129 DOI: 10.1038/s41598-021-99857-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 09/27/2021] [Indexed: 01/05/2023] Open
Abstract
The patchy distribution of trees typical of savannas often results in a discontinuous distribution of water, nutrient resources, and microbial communities in soil, commonly referred to as "islands of fertility". We assessed how this phenomenon may affect the establishment and impact of invasive plants, using the invasion of Opuntia stricta in South Africa's Kruger National Park as case study. We established uninvaded and O. stricta-invaded plots under the most common woody tree species in the study area (Vachellia nilotica subsp. kraussiana and Spirostachys africana) and in open patches with no tree cover. We then compared soil characteristics, diversity and composition of the soil bacterial communities, and germination performance of O. stricta and native trees between soils collected in each of the established plots. We found that the presence of native trees and invasive O. stricta increases soil water content and nutrients, and the abundance and diversity of bacterial communities, and alters soil bacterial composition. Moreover, the percentage and speed of germination of O. stricta were higher in soils conditioned by native trees compared to soils collected from open patches. Finally, while S. africana and V. nilotica trees appear to germinate equally well in invaded and uninvaded soils, O. stricta had lower and slower germination in invaded soils, suggesting the potential release of phytochemicals by O. stricta to avoid intraspecific competition. These results suggest that the presence of any tree or shrub in savanna ecosystems, regardless of origin (i.e. native or alien), can create favourable conditions for the establishment and growth of other plants.
Collapse
Affiliation(s)
- Ana Novoa
- grid.418095.10000 0001 1015 3316Department of Invasion Ecology, Institute of Botany, Czech Academy of Sciences, 252 43 Průhonice, Czech Republic ,grid.11956.3a0000 0001 2214 904XDepartment of Botany and Zoology, Centre for Invasion Biology, Stellenbosch University, Stellenbosch, South Africa ,grid.452736.10000 0001 2166 5237Invasive Species Programme, South African National Biodiversity Institute, Kirstenbosch Research Centre, Claremont, South Africa
| | - Llewellyn C. Foxcroft
- grid.11956.3a0000 0001 2214 904XDepartment of Botany and Zoology, Centre for Invasion Biology, Stellenbosch University, Stellenbosch, South Africa ,grid.463628.d0000 0000 9533 5073Scientific Services, South African National Parks, P/Bag X402, Skukuza, 1350 South Africa
| | - Jan-Hendrik Keet
- grid.11956.3a0000 0001 2214 904XDepartment of Botany and Zoology, Centre for Invasion Biology, Stellenbosch University, Stellenbosch, South Africa ,grid.11956.3a0000 0001 2214 904XDepartment of Botany and Zoology, Stellenbosch University, Stellenbosch, South Africa
| | - Petr Pyšek
- grid.418095.10000 0001 1015 3316Department of Invasion Ecology, Institute of Botany, Czech Academy of Sciences, 252 43 Průhonice, Czech Republic ,grid.4491.80000 0004 1937 116XDepartment of Ecology, Faculty of Science, Charles University, Viničná 7, 128 44 Prague, Czech Republic
| | - Johannes J. Le Roux
- grid.11956.3a0000 0001 2214 904XDepartment of Botany and Zoology, Centre for Invasion Biology, Stellenbosch University, Stellenbosch, South Africa ,grid.11956.3a0000 0001 2214 904XDepartment of Botany and Zoology, Stellenbosch University, Stellenbosch, South Africa ,grid.1004.50000 0001 2158 5405Department of Biological Sciences, Macquarie University, Sydney, NSW 2109 Australia
| |
Collapse
|
6
|
Keet JH, Ellis AG, Hui C, Novoa A, Le Roux JJ. Impacts of Invasive Australian Acacias on Soil Bacterial Community Composition, Microbial Enzymatic Activities, and Nutrient Availability in Fynbos Soils. MICROBIAL ECOLOGY 2021; 82:704-721. [PMID: 33515051 DOI: 10.1007/s00248-021-01683-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 01/05/2021] [Indexed: 06/12/2023]
Abstract
Invasive plants often impact soil conditions, notably through changes in soil chemistry and microbial community composition, potentially leading to altered soil functionality. We determine the impacts of invasive nitrogen-fixing Australian Acacia trees on soil chemistry and function (carbon, nitrogen, and phosphorus cycling) in South Africa's Core Cape Subregion, and whether any differences in soil function are linked to differences in soil chemical properties and bacterial community composition between neighbouring acacia-invaded and uninvaded sites. We do so by using Illumina MiSeq sequencing data together with soil chemistry and soil enzyme activity profiles. Acacias significantly increased levels of soil nitrogen (NO3-, NH4+, and total N), C, and pH. Although we did not find evidence that acacias affected soil bacterial community diversity, we did find them to alter bacterial community composition. Acacias also significantly elevated microbial phosphatase activity, but not β-glucosidase, whilst having contrasting effects on urease. Changes in soil chemical properties under acacia invasion were found to correlate with changes in enzyme activities for urease and phosphatase. Similarly, changes in soil bacterial community composition were correlated to changes in phosphatase enzymatic activity levels under acacia invasion. Whilst we found evidence for acacias altering soil function by changing soil chemical properties and bacterial community composition, these impacts appear to be specific to local site conditions.
Collapse
Affiliation(s)
- Jan-Hendrik Keet
- Department of Botany and Zoology, Stellenbosch University, Matieland, 7602, South Africa.
- Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Matieland, 7602, South Africa.
| | - Allan G Ellis
- Department of Botany and Zoology, Stellenbosch University, Matieland, 7602, South Africa
| | - Cang Hui
- Centre for Invasion Biology, Department of Mathematical Sciences, Stellenbosch University, Matieland, 7602, South Africa
- Mathematical and Physical Biosciences, African Institute for Mathematical Sciences, Cape Town, 7945, South Africa
| | - Ana Novoa
- Czech Academy of Sciences, Institute of Botany, Department of Invasion Ecology, CZ-252 43, Průhonice, Czech Republic
| | - Johannes J Le Roux
- Department of Botany and Zoology, Stellenbosch University, Matieland, 7602, South Africa
- Department of Biological Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| |
Collapse
|
7
|
Gutiérrez JL. Invader to invader facilitation: ice plant mats prompt increased densities and grazing impacts of white garden snails in a Pampean coastal dune system. Biol Invasions 2021. [DOI: 10.1007/s10530-021-02529-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
8
|
Yu H, Le Roux JJ, Jiang Z, Sun F, Peng C, Li W. Soil nitrogen dynamics and competition during plant invasion: insights from Mikania micrantha invasions in China. THE NEW PHYTOLOGIST 2021; 229:3440-3452. [PMID: 33259063 DOI: 10.1111/nph.17125] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Accepted: 11/12/2020] [Indexed: 06/12/2023]
Abstract
Invasive plants often change a/biotic soil conditions to increase their competitiveness. We compared the microbially mediated soil nitrogen (N) cycle of invasive Mikania micrantha and two co-occurring native competitors, Persicaria chinensis and Paederia scandens. We assessed how differences in plant tissue N content, soil nutrients, N cycling rates, microbial biomass and activity, and diversity and abundance of N-cycling microbes associated with these species impact their competitiveness. Mikania micrantha outcompeted both native species by transferring more N to plant tissue (37.9-55.8% more than natives). We found total soil N to be at lowest, and available N highest, in M. micrantha rhizospheres, suggesting higher N cycling rates compared with both natives. Higher microbial biomass and enzyme activities in M. micrantha rhizospheres confirmed this, being positively correlated with soil N mineralization rates and available N. Mikania micrantha rhizospheres harbored highly diverse N-cycling microbes, including N-fixing, ammonia-oxidizing and denitrifying bacteria and ammonia-oxidizing archaea (AOA). Structural equation models indicated that M. micrantha obtained available N via AOA-mediated nitrification mainly. Field data mirrored our experimental findings. Nitrogen availability is elevated under M. micrantha invasion through enrichment of microbes that participate in N cycling, in turn increasing available N for plant growth, facilitating high interspecific competition.
Collapse
Affiliation(s)
- Hanxia Yu
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, Guangzhou Key laboratory of Subtropical Biodiversity and Biomonitoring, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Johannes J Le Roux
- Department of Biological Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Zhaoyang Jiang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, Guangzhou Key laboratory of Subtropical Biodiversity and Biomonitoring, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Feng Sun
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, Guangzhou Key laboratory of Subtropical Biodiversity and Biomonitoring, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Changlian Peng
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, Guangzhou Key laboratory of Subtropical Biodiversity and Biomonitoring, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Weihua Li
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, Guangzhou Key laboratory of Subtropical Biodiversity and Biomonitoring, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| |
Collapse
|
9
|
Phenotypic plasticity of invasive Carpobrotus edulis modulates tolerance against herbivores. Biol Invasions 2021. [DOI: 10.1007/s10530-021-02475-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
10
|
Novoa A, Keet JH, Lechuga-Lago Y, Pyšek P, Roux JJL. Urbanization and Carpobrotus edulis invasion alter the diversity and composition of soil bacterial communities in coastal areas. FEMS Microbiol Ecol 2020; 96:5848193. [PMID: 32463431 DOI: 10.1093/femsec/fiaa106] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 05/27/2020] [Indexed: 11/13/2022] Open
Abstract
Coastal dunes are ecosystems of high conservation value that are strongly impacted by human disturbances and biological invasions in many parts of the world. Here, we assessed how urbanization and Carpobrotus edulis invasion affect soil bacterial communities on the north-western coast of Spain, by comparing the diversity, structure and composition of soil bacterial communities in invaded and uninvaded soils from urban and natural coastal dune areas. Our results suggest that coastal dune bacterial communities contain large numbers of rare taxa, mainly belonging to the phyla Actinobacteria and Proteobacteria. We found that the presence of the invasive C. edulis increased the diversity of soil bacteria and changed community composition, while urbanization only influenced bacterial community composition. Furthermore, the effects of invasion on community composition were conditional on urbanization. These results were contrary to predictions, as both C. edulis invasion and urbanization have been shown to affect soil abiotic conditions of the studied coastal dunes in a similar manner, and therefore were expected to have similar effects on soil bacterial communities. Our results suggest that other factors (e.g. pollution) might be influencing the impact of urbanization on soil bacterial communities, preventing an increase in the diversity of soil bacteria in urban areas.
Collapse
Affiliation(s)
- Ana Novoa
- Department of Invasion Ecology, Institute of Botany, Czech Academy of Sciences, CZ-252 43 Průhonice, Czech Republic.,Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, 7602 Matieland, South Africa.,Invasive Species Programme, South African National Biodiversity Institute, Kirstenbosch Research Centre, 7735 Claremont, South Africa
| | - Jan-Hendrik Keet
- Department of Botany and Zoology, Stellenbosch University, 7602 Matieland, South Africa
| | - Yaiza Lechuga-Lago
- Laboratorio de investigación n21, Ecofisioloxía, Departamento de Bioloxía Vexetal e Ciencias do Solo, Edificio de Ciencias Experimentais, University of Vigo, Campus Universitario, As Lagoas Marcosende, 36310 Vigo, Pontevedra, Spain
| | - Petr Pyšek
- Department of Invasion Ecology, Institute of Botany, Czech Academy of Sciences, CZ-252 43 Průhonice, Czech Republic.,Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, 7602 Matieland, South Africa.,Department of Ecology, Faculty of Science, Charles University, Viničná 7, CZ-128 44 Prague, Czech Republic
| | - Johannes J Le Roux
- Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, 7602 Matieland, South Africa.,Department of Botany and Zoology, Stellenbosch University, 7602 Matieland, South Africa.,Department of Biological Sciences, Macquarie University, Sydney, NSW 2109, Australia
| |
Collapse
|
11
|
Invasive Nicotiana glauca shifts the soil microbial community composition and functioning of harsh and disturbed semiarid Mediterranean environments. Biol Invasions 2020. [DOI: 10.1007/s10530-020-02299-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
|
12
|
Rodríguez-Caballero G, Caravaca F, Díaz G, Torres P, Roldán A. The invader Carpobrotus edulis promotes a specific rhizosphere microbiome across globally distributed coastal ecosystems. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 719:137347. [PMID: 32120096 DOI: 10.1016/j.scitotenv.2020.137347] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 02/13/2020] [Accepted: 02/14/2020] [Indexed: 06/10/2023]
Abstract
The importance of plant-microbe interactions to the success of invasive plants has rarely been studied at a global scale. Carpobrotus edulis (L.) N. E. Br is an aggressive invader in many areas around the world, forming dense mats in coastal environments. In an approach at a large geographical scale, over a wide latitudinal and climatic range, we tested the ability of C. edulis to alter the local bacterial and fungal community structure and microbial activity in eight invaded coastal locations. The factors invasiveness and geographical location had a significant effect on the soil microbiota, the microbial community composition and structure from the rhizosphere of native and C. edulis plants being distinct in every location. The effect of the invader on all the chemical, physico-chemical, and microbiological properties studied depended on the invaded location. The soil bacterial and fungal community composition and structure were related to the soil available nutrients and mean annual rainfall, and those of the soil bacterial community were also linked to the soil respiration and latitude. Overall, our results reveal that the ability of the invader C. edulis to alter soil microbial community structure harboring a specific microbiome was widespread across a large invaded range - leading to concurring changes in the rhizosphere microbial functioning, such as nutrient cycling.
Collapse
Affiliation(s)
- G Rodríguez-Caballero
- CSIC-Centro de Edafología y Biología Aplicada del Segura, Department of Soil and Water Conservation. P.O. Box 164, Campus de Espinardo, 30100 Murcia, Spain
| | - F Caravaca
- CSIC-Centro de Edafología y Biología Aplicada del Segura, Department of Soil and Water Conservation. P.O. Box 164, Campus de Espinardo, 30100 Murcia, Spain.
| | - G Díaz
- Universidad Miguel Hernández de Elche. Department of Applied Biology, Avda. Ferrocarril, s/n. Edf. Laboratorios, 03202 Elche, Alicante, Spain
| | - P Torres
- Universidad Miguel Hernández de Elche. Department of Applied Biology, Avda. Ferrocarril, s/n. Edf. Laboratorios, 03202 Elche, Alicante, Spain
| | - A Roldán
- CSIC-Centro de Edafología y Biología Aplicada del Segura, Department of Soil and Water Conservation. P.O. Box 164, Campus de Espinardo, 30100 Murcia, Spain
| |
Collapse
|
13
|
Wang C, Wei M, Wang S, Wu B, Du D. Cadmium influences the litter decomposition of Solidago canadensis L. and soil N-fixing bacterial communities. CHEMOSPHERE 2020; 246:125717. [PMID: 31918081 DOI: 10.1016/j.chemosphere.2019.125717] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 12/18/2019] [Accepted: 12/19/2019] [Indexed: 06/10/2023]
Abstract
It is important to illuminate the effects of litter decomposition of invasive alien species on soil N-fixing bacterial communities (SoNiBa), especially under heavy metal pollution to better outline the mechanisms for invasion success of invasive alien species. This study attempts to identify the effects of litter decomposition of Solidago canadensis L. on SoNiBa under cadmium (Cd) pollution with different concentrations (i.e., low concentration, 7.5 mg/kg soil; high concentration, 15 mg/kg soil) via a polyethylene litterbags-experiment. Electrical conductivity and total N of soil were the most important environmental factors for determining the variations of SoNiBa composition. S. canadensis did not significantly affect the alpha diversity of SoNiBa but significantly affect the beta diversity of SoNiBa and SoNiBa composition. Thus, SoNiBa composition, rather than alpha diversity of SoNiBa, was the most important determinant of the invasion success of S. canadensis. Cd with 15 mg/kg soil did not address distinct effects on alpha diversity of SoNiBa, but Cd with 7.5 mg/kg soil noticeably raised the number of species and species richness of SoNiBa mainly due to the hormonal effects. The combined S. canadensis and Cd with 15 mg/kg soil obviously decreased cumulative mass losses and the rate of litter decomposition (k) of S. canadensis, but the combined S. canadensis and Cd with 7.5 mg/kg soil evidently accelerated cumulative mass losses and k of S. canadensis. Thus, Cd with 7.5 mg/kg soil can accelerate litter decomposition of S. canadensis, but Cd with 15 mg/kg soil can decline litter decomposition of S. canadensis.
Collapse
Affiliation(s)
- Congyan Wang
- Institute of Environment and Ecology & School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, PR China; State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, 200092, PR China.
| | - Mei Wei
- Institute of Environment and Ecology & School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Shu Wang
- Institute of Environment and Ecology & School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Bingde Wu
- Institute of Environment and Ecology & School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Daolin Du
- Institute of Environment and Ecology & School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| |
Collapse
|
14
|
Souza-Alonso P, Lechuga-Lago Y, Guisande-Collazo A, Pereiro Rodríguez D, Rosón Porto G, González Rodríguez L. Drifting away. Seawater survival and stochastic transport of the invasive Carpobrotus edulis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 712:135518. [PMID: 31806303 DOI: 10.1016/j.scitotenv.2019.135518] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 11/11/2019] [Accepted: 11/12/2019] [Indexed: 06/10/2023]
Abstract
Coastal areas are vulnerable and fluctuating habitats that include highly valuable spaces for habitat and species conservation and, at the same time, they are among the most invaded ecosystems worldwide. Occupying large areas within Mediterranean-climate coastlines, the "ecosystem engineer" Carpobrotus edulis appears as a menace for coastal biodiversity and ecosystem services. By combining the observation, current distribution, glasshouse experiment, and dispersion modeling, we aim to achieve a better understanding of the successful invasion process and potential dispersion patterns of C. edulis. We analyzed the response of plant propagules (seeds and plant fragments) to seawater immersion during increasing periods of time (up to 144 h). After 2 months of growth, plant fragments showed a total survival rate (100%) indicating high tolerance to salinity. During this time, fragment length was increased (up to 60%) and root length was higher than control in all cases. Also, immersed fragments consistently accumulated more biomass than control fragments. After two months of growth, photosynthetic parameters (Fv'/Fm', ΦNO, and ΦII) remained stable compared to control fragments. Physiologically, osmolyte and pigment content did not evidence significant changes regardless of immersion time. Based on the capacity of propagules to survive seawater immersion, we modeled the potential transport of C. edulis by combining an oceanic model (ROMS-AGRIF) with a particle-tracking model. Results indicated that propagules may travel variable distances maintaining physiological viability. Our model suggested that short-scale circulation would be the dominant process, however, long-scale circulation of propagules may be successfully accomplished in <6 days. Furthermore, under optimal conditions (southerly winds dominance), propagules may even travel large distances (250 km alongshore). Modeling transport processes, in combination with the dynamics of introduction and expansion, will contribute to a better understanding of the invasive mechanisms of C. edulis and, consequently, to design preventive strategies to reduce the impact of plant invasion.
Collapse
Affiliation(s)
- Pablo Souza-Alonso
- Centre for Functional Ecology - Science for People & the Planet, Department of Life Sciences, Faculty of Sciences and Technology, University of Coimbra, Coimbra, Portugal; Laboratory of Plant Ecophysiology, Department of Plant Biology and Soil Science, Faculty of Biology, University of Vigo, Spain.
| | - Yaiza Lechuga-Lago
- Laboratory of Plant Ecophysiology, Department of Plant Biology and Soil Science, Faculty of Biology, University of Vigo, Spain
| | - Alejandra Guisande-Collazo
- Laboratory of Plant Ecophysiology, Department of Plant Biology and Soil Science, Faculty of Biology, University of Vigo, Spain
| | - Diego Pereiro Rodríguez
- Physical Oceanography Group (GOFUVI), Department of Applied Physics, University of Vigo, Spain
| | - Gabriel Rosón Porto
- Physical Oceanography Group (GOFUVI), Department of Applied Physics, University of Vigo, Spain
| | - Luís González Rodríguez
- Laboratory of Plant Ecophysiology, Department of Plant Biology and Soil Science, Faculty of Biology, University of Vigo, Spain
| |
Collapse
|
15
|
Parsons LS, Sayre J, Ender C, Rodrigues JLM, Barberán A. Soil microbial communities in restored and unrestored coastal dune ecosystems in California. Restor Ecol 2020. [DOI: 10.1111/rec.13101] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
| | - Jordan Sayre
- Department of Land, Air and Water Resources University of California Davis CA 95616 U.S.A
| | - Cody Ender
- Point Reyes National Seashore Point Reyes Station CA 94956 U.S.A
| | - Jorge L. M. Rodrigues
- Department of Land, Air and Water Resources University of California Davis CA 95616 U.S.A
| | - Albert Barberán
- Department of Environmental Science University of Arizona Tucson AZ 85721 U.S.A
| |
Collapse
|
16
|
Nievas RP, Calderon MR, Moglia MM. Environmental factors affecting the success of exotic plant invasion in a wildland-urban ecotone in temperate South America. NEOTROPICAL BIOLOGY AND CONSERVATION 2019. [DOI: 10.3897/neotropical.14.e37633] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Urbanization is one of the main causes driving changes in biodiversity patterns and it is regarded as a major threat to native biota. Successful exotic plant invasion depends on invasiveness and invasibility. Invasiveness is related to the characteristics of exotic plants and invasibility to the features of the sites. The objective of this study was to identify the invasibility environmental factors affecting the success of exotic plant invasion in a wildland-urban ecotone of the central region of Argentina (Potrero de los Funes Village, San Luis). Fifty phytosociological inventories were recorded in an area of 700 ha during spring and summer seasons (2013–2015). Abundance-coverage values of plants and environmental variables such as soil characteristics, anthropogenic disturbance, and altitude of the sites were assessed. Soil moisture, electrical conductivity (EC), acidity (pH), organic matter content, and nitrates were determined as part of the soil analysis. A Nonmetric Multidimensional Scaling analysis was used to identify the possible relationship between abundance-coverage of the vegetation and environmental variables. Abundance-coverage of exotic plants was positively influenced by anthropogenic disturbance and nitrate levels, and negatively affected by altitude. However, no significant correlation was found between percentage of exotic plants and pH, EC, or soil moisture. Thus, urbanization and touristic activities influenced the success of exotic plant invasion.
Collapse
|
17
|
Wang W, Sardans J, Wang C, Zeng C, Tong C, Chen G, Huang J, Pan H, Peguero G, Vallicrosa H, Peñuelas J. The response of stocks of C, N, and P to plant invasion in the coastal wetlands of China. GLOBAL CHANGE BIOLOGY 2019; 25:733-743. [PMID: 30346103 DOI: 10.1111/gcb.14491] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 10/08/2018] [Accepted: 10/01/2018] [Indexed: 06/08/2023]
Abstract
The increasing success of invasive plant species in wetland areas can threaten their capacity to store carbon, nitrogen, and phosphorus (C, N, and P). Here, we have investigated the relationships between the different stocks of soil organic carbon (SOC), and total C, N, and P pools in the plant-soil system from eight different wetland areas across the South-East coast of China, where the invasive tallgrass Spartina alterniflora has replaced the native tall grasses Phragmites australis and the mangrove communities, originally dominated by the native species Kandelia obovata and Avicennia marina. The invasive success of Spartina alterniflora replacing Phragmites australis did not greatly influence soil traits, biomass accumulation or plant-soil C and N storing capacity. However, the resulting higher ability to store P in both soil and standing plant biomass (approximately more than 70 and 15 kg P by ha, respectively) in the invasive than in the native tall grass communities suggesting the possibility of a decrease in the ecosystem N:P ratio with future consequences to below- and aboveground trophic chains. The results also showed that a future advance in the native mangrove replacement by Spartina alterniflora could constitute a serious environmental problem. This includes enrichment of sand in the soil, with the consequent loss of nutrient retention capacity, as well as a sharp decrease in the stocks of C (2.6 and 2.2 t C ha-1 in soil and stand biomass, respectively), N, and P in the plant-soil system. This should be associated with a worsening of the water quality by aggravating potential eutrophication processes. Moreover, the loss of carbon and nutrient decreases the potential overall fertility of the system, strongly hampering the reestablishment of woody mangrove communities in the future.
Collapse
Affiliation(s)
- Weiqi Wang
- Key Laboratory of Humid Subtropical Eco-geographical Process, Ministry of Education, Fujian Normal University, Fuzhou, China
- Institute of Geography, Fujian Normal University, Fuzhou, China
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Catalonia, Spain
- CREAF, Catalonia, Spain
| | - Jordi Sardans
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Catalonia, Spain
- CREAF, Catalonia, Spain
| | - Chun Wang
- Key Laboratory of Humid Subtropical Eco-geographical Process, Ministry of Education, Fujian Normal University, Fuzhou, China
- Institute of Geography, Fujian Normal University, Fuzhou, China
| | - Congsheng Zeng
- Key Laboratory of Humid Subtropical Eco-geographical Process, Ministry of Education, Fujian Normal University, Fuzhou, China
- Institute of Geography, Fujian Normal University, Fuzhou, China
| | - Chuan Tong
- Key Laboratory of Humid Subtropical Eco-geographical Process, Ministry of Education, Fujian Normal University, Fuzhou, China
- Institute of Geography, Fujian Normal University, Fuzhou, China
| | - Guixiang Chen
- Key Laboratory of Humid Subtropical Eco-geographical Process, Ministry of Education, Fujian Normal University, Fuzhou, China
- Institute of Geography, Fujian Normal University, Fuzhou, China
| | - Jiafang Huang
- Key Laboratory of Humid Subtropical Eco-geographical Process, Ministry of Education, Fujian Normal University, Fuzhou, China
- Institute of Geography, Fujian Normal University, Fuzhou, China
| | - Haoran Pan
- Guangxi Mangrove Research Center, Guangxi Academy of Sceinces, Beihai, China
| | - Guille Peguero
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Catalonia, Spain
- CREAF, Catalonia, Spain
| | - Helena Vallicrosa
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Catalonia, Spain
- CREAF, Catalonia, Spain
| | - Josep Peñuelas
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Catalonia, Spain
- CREAF, Catalonia, Spain
| |
Collapse
|
18
|
Herbivore accumulation on invasive alien plants increases the distribution range of generalist herbivorous insects and supports proliferation of non-native insect pests. Biol Invasions 2019. [DOI: 10.1007/s10530-019-01913-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
19
|
Wang C, Jiang K, Zhou J, Wu B. Solidago canadensis invasion affects soil N-fixing bacterial communities in heterogeneous landscapes in urban ecosystems in East China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 631-632:702-713. [PMID: 29544175 DOI: 10.1016/j.scitotenv.2018.03.061] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 03/06/2018] [Accepted: 03/06/2018] [Indexed: 06/08/2023]
Abstract
Soil nitrogen-fixing bacterial communities (SNB) can increase the level of available soil N via biological N-fixation to facilitate successful invasion of several invasive plant species (IPS). Meanwhile, landscape heterogeneity can greatly enhance regional invasibility and increase the chances of successful invasion of IPS. Thus, it is important to understand the soil micro-ecological mechanisms driving the successful invasion of IPS in heterogeneous landscapes. This study performed cross-site comparisons, via metagenomics, to comprehensively analyze the effects of Solidago canadensis invasion on SNB in heterogeneous landscapes in urban ecosystems. Rhizospheric soil samples of S. canadensis were obtained from nine urban ecosystems [Three replicate quadrats (including uninvaded sites and invaded sites) for each type of urban ecosystem]. S. canadensis invasion did not significantly affect soil physicochemical properties, the taxonomic diversity of plant communities, or the diversity and richness of SNB. However, some SNB taxa (i.e., f_Micromonosporaceae, f_Oscillatoriaceae, and f_Bacillaceae) changed significantly with S. canadensis invasion. Thus, S. canadensis invasion may alter the community structure, rather than the diversity and richness of SNB, to facilitate its invasion process. Of the nine urban ecosystems, the diversity and richness of SNB was highest in farmland wasteland. Accordingly, the community invasibility of farmland wasteland may be higher than that of the other types of urban ecosystem. In brief, landscape heterogeneity, rather than S. canadensis invasion, was the strongest controlling factor for the diversity and richness of SNB. One possible reason may be the differences in soil electrical conductivity and the taxonomic diversity of plant communities in the nine urban ecosystems, which can cause notable shifts in the diversity and richness of SNB.
Collapse
Affiliation(s)
- Congyan Wang
- Institute of Environment and Ecology, Academy of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China; Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science, Fudan University, Shanghai 200433, PR China.
| | - Kun Jiang
- Institute of Environment and Ecology, Academy of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Jiawei Zhou
- Institute of Environment and Ecology, Academy of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Bingde Wu
- Institute of Environment and Ecology, Academy of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China
| |
Collapse
|
20
|
Vieites-Blanco C, González-Prieto SJ. Effects of Carpobrotus edulis invasion on soil gross N fluxes in rocky coastal habitats. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 619-620:966-976. [PMID: 29734642 DOI: 10.1016/j.scitotenv.2017.11.154] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 11/13/2017] [Accepted: 11/14/2017] [Indexed: 06/08/2023]
Abstract
The effects of alien plants on whole nutrient cycles have been scarcely studied, despite the increasing evidence on their impact on nutrient pools and fluxes. Carpobrotus edulis, a dangerous invasive plant in coastal areas worldwide, is considered an ecosystems engineer which, by changing many soil properties, benefits its own invasion and hampers the restoration of the invaded habitats. To study, for the first time, the 'true' impact of C. edulis on the soil N cycle, we used a paired 15N labelling experiment and a Ntrace compartment model to estimate the gross N fluxes in the 0-5cm and 5-10cm soil layers of non-invaded and C. edulis invaded areas of two temperate-humid coastal rocky locations. Carpobrotus edulis invasion generally increased NH4+ immobilization (INH4, 1.19-4.48×), presumably due to a lower N availability for the microbiota. The invasion also decreased autotrophic nitrification (ONH4, 0.20-0.79×), either by a direct effect over soil microbiota or by the acidification triggered by C. edulis. Unexpectedly, the dissimilatory nitrate reduction (DNRA) was the exclusive NO3- consuming process modelled on most of the studied soils, although the incubation was aerobic. Apparently, the high organic C content of these soils induced a higher O2 consumption and the formation of anaerobic microsites where the DNRA could have taken place. The lower NO3- availability of invaded soils could explain their lower DNRA rates (0.04-0.70×) compared to native soils. Both DNRA and ONH4 were more affected in the 0-5cm layer, but the invasion also significantly affected N rates in the 5-10cm layer. Overall, net nitrification and mineralization generally decreased in the invaded soils. This study shows that the invasion of C. edulis alters soil gross and net N fluxes in a 0-10cm depth through its effects on soil properties and microbiota.
Collapse
Affiliation(s)
- Cristina Vieites-Blanco
- Instituto de Investigaciones Agrobiológicas de Galicia, IIAG-CSIC, Apartado 122, E-15780 Santiago de Compostela, Spain; Departamento de Bioloxía Funcional, Universidade de Santiago de Compostela, R/Lope Gómez de Marzoa, s/n, 15782 Santiago de Compostela, Spain
| | - Serafín J González-Prieto
- Instituto de Investigaciones Agrobiológicas de Galicia, IIAG-CSIC, Apartado 122, E-15780 Santiago de Compostela, Spain.
| |
Collapse
|
21
|
Species-Specific Impacts of Invasive Plant Success on Vertical Profiles of Soil Carbon Accumulation and Nutrient Retention in the Minjiang River Tidal Estuarine Wetlands of China. SOIL SYSTEMS 2018. [DOI: 10.3390/soils2010005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
22
|
Wang C, Zhou J, Liu J, Jiang K, Xiao H, Du D. Responses of the soil fungal communities to the co-invasion of two invasive species with different cover classes. PLANT BIOLOGY (STUTTGART, GERMANY) 2018; 20:151-159. [PMID: 29030899 DOI: 10.1111/plb.12646] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 10/09/2017] [Indexed: 06/07/2023]
Abstract
Soil fungal communities play an important role in the successful invasion of non-native species. It is common for two or more invasive plant species to co-occur in invaded ecosystems. This study aimed to determine the effects of co-invasion of two invasive species (Erigeron annuus and Solidago canadensis) with different cover classes on soil fungal communities using high-throughput sequencing. Invasion of E. annuus and/or S. canadensis had positive effects on the sequence number, operational taxonomic unit (OTU) richness, Shannon diversity, abundance-based cover estimator (ACE index) and Chao1 index of soil fungal communities, but negative effects on the Simpson index. Thus, invasion of E. annuus and/or S. canadensis could increase diversity and richness of soil fungal communities but decrease dominance of some members of these communities, in part to facilitate plant further invasion, because high soil microbial diversity could increase soil functions and plant nutrient acquisition. Some soil fungal species grow well, whereas others tend to extinction after non-native plant invasion with increasing invasion degree and presumably time. The sequence number, OTU richness, Shannon diversity, ACE index and Chao1 index of soil fungal communities were higher under co-invasion of E. annuus and S. canadensis than under independent invasion of either individual species. The co-invasion of the two invasive species had a positive synergistic effect on diversity and abundance of soil fungal communities, partly to build a soil microenvironment to enhance competitiveness of the invaders. The changed diversity and community under co-invasion could modify resource availability and niche differentiation within the soil fungal communities, mediated by differences in leaf litter quality and quantity, which can support different fungal/microbial species in the soil.
Collapse
Affiliation(s)
- C Wang
- Institute of Environment and Ecology, Academy of Environmental Health and Ecological Security & School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
| | - J Zhou
- Institute of Environment and Ecology, Academy of Environmental Health and Ecological Security & School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
| | - J Liu
- Institute of Environment and Ecology, Academy of Environmental Health and Ecological Security & School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
| | - K Jiang
- Institute of Environment and Ecology, Academy of Environmental Health and Ecological Security & School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
| | - H Xiao
- Institute of Environment and Ecology, Academy of Environmental Health and Ecological Security & School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
| | - D Du
- Institute of Environment and Ecology, Academy of Environmental Health and Ecological Security & School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
| |
Collapse
|
23
|
Understanding the influence of urbanization on invasibility: Carpobrotus edulis as an exemplar. Biol Invasions 2017. [DOI: 10.1007/s10530-017-1593-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
24
|
Nsikani MM, Novoa A, van Wilgen BW, Keet JH, Gaertner M. Acacia saligna
's soil legacy effects persist up to 10 years after clearing: Implications for ecological restoration. AUSTRAL ECOL 2017. [DOI: 10.1111/aec.12515] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mlungele M. Nsikani
- Centre for Invasion Biology; Department of Botany and Zoology; Stellenbosch University; Private Bag X1 Matieland 7602 Stellenbosch South Africa
| | - Ana Novoa
- Centre for Invasion Biology; Department of Botany and Zoology; Stellenbosch University; Private Bag X1 Matieland 7602 Stellenbosch South Africa
- Invasive Species Programme; South African National Biodiversity Institute; Kirstenbosch Research Centre; Claremont South Africa
- Department of Invasion Ecology; Institute of Botany; The Czech Academy of Sciences; Průhonice Czech Republic
| | - Brian W. van Wilgen
- Centre for Invasion Biology; Department of Botany and Zoology; Stellenbosch University; Private Bag X1 Matieland 7602 Stellenbosch South Africa
| | - Jan-Hendrik Keet
- Centre for Invasion Biology; Department of Botany and Zoology; Stellenbosch University; Private Bag X1 Matieland 7602 Stellenbosch South Africa
| | - Mirijam Gaertner
- Centre for Invasion Biology; Department of Botany and Zoology; Stellenbosch University; Private Bag X1 Matieland 7602 Stellenbosch South Africa
- Invasive Species Unit (ISU); Environmental Resource Management Department (ERMD); City of Cape Town, Westlake Conservation Office; Tokai South Africa
- Nürtingen-Geislingen University of Applied Sciences (HFWU); Nürtingen Germany
| |
Collapse
|
25
|
Don’t leave me behind: viability of vegetative propagules of the clonal invasive Carpobrotus edulis and implications for plant management. Biol Invasions 2017. [DOI: 10.1007/s10530-017-1429-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
26
|
Germination Response of Four Alien Congeneric Amaranthus Species to Environmental Factors. PLoS One 2017; 12:e0170297. [PMID: 28107495 PMCID: PMC5249158 DOI: 10.1371/journal.pone.0170297] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 01/03/2017] [Indexed: 11/19/2022] Open
Abstract
Seed germination is the key step for successful establishment, growth and further expansion of population especially for alien plants with annual life cycle. Traits like better adaptability and germination response were thought to be associated with plant invasion. However, there are not enough empirical studies correlating adaptation to environmental factors with germination response of alien invasive plants. In this study, we conducted congeneric comparisons of germination response to different environmental factors such as light, pH, NaCl, osmotic and soil burials among four alien amaranths that differ in invasiveness and have sympatric distribution in Jiangsu Province, China. The data were used to create three-parameter sigmoid and exponential decay models, which were fitted to cumulative germination and emergence curves. The results showed higher maximum Germination (Gmax), shorter time for 50% germination (G50) and the rapid slope (Grate) for Amaranthus blitum (low-invasive) and A. retroflexus (high-invasive) compare to intermediately invasive A. spinosus and A. viridis in all experimental regimes. It indicated that germination potential does not necessarily constitute a trait that can efficiently distinguish highly invasive and low invasive congeners in four Amaranthus species. However, it was showed that the germination performances of four amaranth species were more or less correlated with their worldwide distribution area. Therefore, the germination performance can be used as a reference indicator, but not an absolute trait for invasiveness. Our results also confirmed that superior germination performance in wide environmental conditions supplementing high seed productivity in highly invasive A. retroflexus might be one of the reasons for its prolific growth and wide distribution. These findings lay the foundation to develop more efficient weed management practice like deep burial of seeds by turning over soil and use of tillage agriculture to control these invasive weed species.
Collapse
|
27
|
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]
|
28
|
Lechuga-Lago Y, Sixto-Ruiz M, Roiloa SR, González L. Clonal integration facilitates the colonization of drought environments by plant invaders. AOB PLANTS 2016; 8:plw023. [PMID: 27154623 PMCID: PMC4925925 DOI: 10.1093/aobpla/plw023] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 04/02/2016] [Indexed: 06/01/2023]
Abstract
Biological invasion represents one of the main threats for biodiversity conservation at the global scale. Identifying the mechanisms underlying the process of biological invasions is a crucial objective in the prediction of scenarios of future invasions and the mitigation of their impacts. In this sense, some plant attributes might better explain the success of invasive plant species than others. Recently, clonal growth has been identified as an attribute that could contribute to the invasiveness of plants. In this experiment, we aim to determine the effect of physiological integration (one of the most striking attributes associated with clonal growth) in the performance (at morphological and physiological levels) of the aggressive invader Carpobrotus edulis, when occupying stressful environments. To achieve this objective we performed a greenhouse experiment in which apical ramets of C. edulis were water-stressed and the connection with the basal ramets was either left intact (physiological integration is allowed) or severed (physiological integration is impeded). Our results show that clonal integration allowed apical ramets to buffer drought stress in terms of photochemical activity, and as a consequence, to increase their growth in comparison with severed apical ramets. Interestingly, this increase in biomass was mainly due to the production of aboveground structures, increasing the spread along the soil surface, and consequently having important implications for the colonization success of new environments by this aggressive invader.
Collapse
Affiliation(s)
- Yaiza Lechuga-Lago
- Department of Plant Biology and Soil Science, University of Vigo, Vigo 36310, Spain
| | - Marta Sixto-Ruiz
- Department of Plant Biology and Soil Science, University of Vigo, Vigo 36310, Spain
| | - Sergio R Roiloa
- BioCost Group, Department of Animal Biology, Plant Biology and Ecology, Faculty of Sciences, Universidade da Coruña, A Coruña 15071, Spain
| | - Luís González
- Department of Plant Biology and Soil Science, University of Vigo, Vigo 36310, Spain
| |
Collapse
|
29
|
Wang C, Xiao H, Liu J, Wang L, Du D. Insights into Ecological Effects of Invasive Plants on Soil Nitrogen Cycles. ACTA ACUST UNITED AC 2015. [DOI: 10.4236/ajps.2015.61005] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
30
|
Impacts of Carpobrotus edulis (L.) N.E.Br. on the germination, establishment and survival of native plants: a clue for assessing its competitive strength. PLoS One 2014; 9:e107557. [PMID: 25210924 PMCID: PMC4161477 DOI: 10.1371/journal.pone.0107557] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Accepted: 08/14/2014] [Indexed: 11/19/2022] Open
Abstract
Does Carpobrotus edulis have an impact on native plants? How do C. edulis' soil residual effects affect the maintenance of native populations? What is the extent of interspecific competition in its invasion process? In order to answer those questions, we established pure and mixed cultures of native species and C. edulis on soil collected from invaded and native areas of Mediterranean coastal dunes in the Iberian Peninsula. We examined the impact of the invader on the germination, growth and survival of seeds and adult plants of two native plant species (Malcolmia littorea (L.) R.Br, and Scabiosa atropurpurea L.) growing with ramets or seeds of C. edulis. Residual effects of C. edulis on soils affected the germination process and early growth of native plants in different ways, depending on plant species and density. Interspecific competition significantly reduced the germination and early growth of native plants but this result was soil, density, timing and plant species dependent. Also, at any density of adult individuals of C. edulis, established native adult plants were not competitive. Moreover, ramets of C. edulis had a lethal effect on native plants, which died in a short period of time. Even the presence of C. edulis seedlings prevents the recruitment of native species. In conclusion, C. edulis have strong negative impacts on the germination, growth and survival of the native species M. littorea and S. atropurpurea. These impacts were highly depended on the development stages of native and invasive plants. Our findings are crucial for new strategies of biodiversity conservation in coastal habitats.
Collapse
|