1
|
Kempthorne CJ, St Pierre M, Le A, Livingstone S, McNulty J, Cadotte MW, Liscombe DK. Mass spectrometry-based metabolomics for the elucidation of alkaloid biosynthesis and function in invasive Vincetoxicum rossicum populations. PHYTOCHEMISTRY 2024; 221:114051. [PMID: 38452878 DOI: 10.1016/j.phytochem.2024.114051] [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: 10/04/2023] [Revised: 02/23/2024] [Accepted: 03/02/2024] [Indexed: 03/09/2024]
Abstract
The genus Vincetoxicum includes a couple of highly invasive vines in North America that threaten biodiversity and challenge land management strategies. Vincetoxicum species are known to produce bioactive phenanthroindolizidine alkaloids that might play a role in the invasiveness of these plants via chemical interactions with other organisms. Untargeted, high-resolution mass spectrometry-based metabolomics approaches were used to explore specialized metabolism in Vincetoxicum plants collected from invaded sites in Ontario, Canada. All metabolites corresponding to alkaloids in lab and field samples of V. rossicum and V. nigrum were identified, which collectively contained 25 different alkaloidal features. The biosynthesis of these alkaloids was investigated by the incorporation of the stable isotope-labelled phenylalanine precursor providing a basis for an updated biosynthetic pathway accounting for the rapid generation of chemical diversity in invasive Vincetoxicum. Aqueous extracts of aerial Vincetoxicum rossicum foliage had phytotoxic activity against seedlings of several species, resulting in identification of tylophorine as a phytotoxin; tylophorine and 14 other alkaloids from Vincetoxicum accumulated in soils associated with full-sun and a high-density of V. rossicum. Using desorption-electrospray ionization mass spectrometry, 15 alkaloids were found to accumulate at wounded sites of V. rossicum leaves, a chemical cocktail that would be encountered by feeding herbivores. Understanding the specialized metabolism of V. rossicum provides insight into the roles and influences of phenanthroindolizidine alkaloids in ecological systems and enables potential, natural product-based approaches for the control of invasive Vincetoxicum and other weedy species.
Collapse
Affiliation(s)
- Christine J Kempthorne
- Vineland Research and Innovation Centre, 4890 Victoria Ave North, Box 4000, Vineland Station, Ontario, L0R 2E0, Canada; Centre for Biotechnology, Brock University, 1812 Sir Isaac Brock Way, St Catharines, Ontario, L2S 3A1, Canada
| | - Max St Pierre
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main St W, Hamilton, Ontario, L8S 4L8, Canada
| | - Andrew Le
- Department of Biological Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, Ontario, M1C 1A4, Canada
| | - Stuart Livingstone
- Department of Biological Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, Ontario, M1C 1A4, Canada
| | - James McNulty
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main St W, Hamilton, Ontario, L8S 4L8, Canada
| | - Marc W Cadotte
- Department of Biological Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, Ontario, M1C 1A4, Canada
| | - David K Liscombe
- Vineland Research and Innovation Centre, 4890 Victoria Ave North, Box 4000, Vineland Station, Ontario, L0R 2E0, Canada; Department of Biological Sciences, Brock University, 1812 Sir Isaac Brock Way, St Catharines, Ontario, L2S 3A1, Canada.
| |
Collapse
|
2
|
Kharouba HM. Shifting the paradigm: The role of introduced plants in the resiliency of terrestrial ecosystems to climate change. GLOBAL CHANGE BIOLOGY 2024; 30:e17319. [PMID: 38804095 DOI: 10.1111/gcb.17319] [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: 07/13/2023] [Revised: 04/25/2024] [Accepted: 05/01/2024] [Indexed: 05/29/2024]
Abstract
Current ecological communities are in a constant state of flux from climate change and from species introductions. Recent discussion has focused on the positive roles introduced species can play in ecological communities and on the importance of conserving resilient ecosystems, but not how these two ideas intersect. There has been insufficient work to define the attributes needed to support ecosystem resilience to climate change in modern communities. Here, I argue that non-invasive, introduced plant species could play an important role in supporting the resilience of terrestrial ecosystems to climate change. Using examples from multiple taxonomic groups and ecosystems, I discuss how introduced plants can contribute to ecosystem resilience via their roles in plant and insect communities, as well as their associated ecosystem functions. I highlight the current and potential contributions of introduced plants and where there are critical knowledge gaps. Determining when and how introduced plants are contributing to the resilience of ecosystems to climate change will contribute to effective conservation strategies.
Collapse
|
3
|
Shen K, He Y, Xia T, Guo Y, Wu B, Han X, Chen H, Zhao Y, Wu P, Liu Y. Arbuscular mycorrhizal fungi improve the competitive advantage of a native plant relative to a congeneric invasive plant in growth and nutrition. Ecol Evol 2024; 14:e11459. [PMID: 38774145 PMCID: PMC11106688 DOI: 10.1002/ece3.11459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 02/22/2024] [Accepted: 05/08/2024] [Indexed: 05/24/2024] Open
Abstract
Plant invasions severely threaten natural ecosystems, and invasive plants often outcompete native plants across various ecosystems. Arbuscular mycorrhizal (AM) fungi, serving as beneficial microorganisms for host plants, can greatly influence the competitive outcomes of invasive plants against native plants. However, it remains unclear how AM fungi alter the competitive balance between native and invasive species. A competitive experiment was conducted using an invasive Eupatorium adenophorum paired with a native congener Eupatorium lindleyanum. Specifically, both species were inoculated with (M+) or without (M-) the fungus Glomus etunicatum under intraspecific (Intra-) and interspecific (Inter-) competition. Plant traits were measured and analyzed regarding the growth and nutrition of both species. The results exhibited that the AM fungus significantly increased the height, diameter, biomass, C, N, and P acquisition of both the invasive E. adenophorum and the native E. lindleyanum. The root mycorrhizal colonization and the mycorrhizal dependency of native E. lindleyanum were greater than those of invasive E. adenophorum. Under M+, the Inter-competition inhibited the growth and nutrition of invasive E. adenophorum compared to the Intra- competition. Further, native E. lindleyanum exhibited higher competitiveness than invasive E. adenophorum in growth and nutrition. Meanwhile, the AM fungus significantly improved the competitiveness of native E. lindleyanum over invasive E. adenophorum. In conclusion, AM fungus improved the competitive advantage of native E. lindleyanum over invasive E. adenophorum in growth and nutrition, potentially contributing to native species competitively resisting the invasion of exotic species. These findings emphasize the importance of AM fungi in helping native plants resist the invasion of exotic plants and further contribute to understanding plant invasion prevention mechanisms.
Collapse
Affiliation(s)
- Kaiping Shen
- Forestry College, Research Center of Forest EcologyGuizhou UniversityGuiyangChina
| | - Yuejun He
- Forestry College, Research Center of Forest EcologyGuizhou UniversityGuiyangChina
| | - Tingting Xia
- Forestry College, Research Center of Forest EcologyGuizhou UniversityGuiyangChina
| | - Yun Guo
- Forestry College, Research Center of Forest EcologyGuizhou UniversityGuiyangChina
- College of Eco‐Environmental EngineeringGuizhou Minzu UniversityGuiyangChina
| | - Bangli Wu
- Forestry College, Research Center of Forest EcologyGuizhou UniversityGuiyangChina
| | - Xu Han
- Forestry College, Research Center of Forest EcologyGuizhou UniversityGuiyangChina
| | - Hongchun Chen
- College of Resources and Environmental EngineeringGuizhou UniversityGuiyangChina
- Guizhou Provincial Water Conservancy Research InstituteGuiyangChina
| | - Yan Zhao
- College of Resources and Environmental EngineeringGuizhou UniversityGuiyangChina
| | - Pan Wu
- College of Resources and Environmental EngineeringGuizhou UniversityGuiyangChina
| | - Yuan Liu
- College of Life ScienceGuizhou UniversityGuiyangChina
| |
Collapse
|
4
|
Wu H, Liu Y, Zhang T, Xu M, Rao B. Impacts of Soil Properties on Species Diversity and Structure in Alternanthera philoxeroides-Invaded and Native Plant Communities. PLANTS (BASEL, SWITZERLAND) 2024; 13:1196. [PMID: 38732411 PMCID: PMC11085794 DOI: 10.3390/plants13091196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 04/21/2024] [Accepted: 04/24/2024] [Indexed: 05/13/2024]
Abstract
Soil properties can affect plant population dynamics and the coexistence of native and invasive plants, thus potentially affecting community structure and invasion trends. However, the different impacts of soil physicochemical properties on species diversity and structure in native and invaded plant communities remain unclear. In this study, we established a total of 30 Alternanthera philoxeroides-invaded plots and 30 control plots in an area at the geographical boundary between North and South China. We compared the differences in species composition between the invaded and native plant communities, and we then used the methods of regression analysis, redundancy analysis (RDA), and canonical correspondence analysis (CCA) to examine the impacts of soil physicochemical properties on four α-diversity indices and the species distribution of these two types of communities. We found that A. philoxeroides invasion increased the difference between the importance values of dominant plant species, and the invasion coverage had a negative relationship with the soil-available potassium (R2 = 0.135; p = 0.046) and Patrick richness index (R2 = 0.322; p < 0.001). In the native communities, the species diversity was determined with soil chemical properties, the Patrick richness index, the Simpson dominance index, and the Shannon-Wiener diversity index, which all decreased with the increase in soil pH value, available potassium, organic matter, and ammonium nitrogen. However, in the invaded communities, the species diversity was determined by soil physical properties; the Pielou evenness index increased with increasing non-capillary porosity but decreased with increasing capillary porosity. The determinants of species distribution in the native communities were soil porosity and nitrate nitrogen, while the determinants in the invaded communities were soil bulk density and available potassium. In addition, compared with the native communities, the clustering degree of species distribution in the invaded communities intensified. Our study indicates that species diversity and distribution have significant heterogeneous responses to soil physicochemical properties between A. philoxeroides-invaded and native plant communities. Thus, we need to intensify the monitoring of soil properties in invaded habitats and conduct biotic replacement strategies based on the heterogeneous responses of native and invaded communities to effectively prevent the biotic homogenization that is caused by plant invasions under environmental changes.
Collapse
Affiliation(s)
- Hao Wu
- College of Life Sciences, Xinyang Normal University, Xinyang 464000, China; (Y.L.); (T.Z.); (M.X.)
- Henan Dabieshan National Field Observation and Research Station of Forest Ecosystem, Zhengzhou 450046, China
- Xinyang Academy of Ecological Research, Xinyang 464000, China
- Dabie Mountain Laboratory, Xinyang 464000, China
| | - Yuxin Liu
- College of Life Sciences, Xinyang Normal University, Xinyang 464000, China; (Y.L.); (T.Z.); (M.X.)
| | - Tiantian Zhang
- College of Life Sciences, Xinyang Normal University, Xinyang 464000, China; (Y.L.); (T.Z.); (M.X.)
| | - Mingxia Xu
- College of Life Sciences, Xinyang Normal University, Xinyang 464000, China; (Y.L.); (T.Z.); (M.X.)
| | - Benqiang Rao
- College of Life Sciences, Xinyang Normal University, Xinyang 464000, China; (Y.L.); (T.Z.); (M.X.)
- Dabie Mountain Laboratory, Xinyang 464000, China
| |
Collapse
|
5
|
Lortie CJ, Brown C, Haas-Desmarais S, Lucero J, Callaway R, Braun J, Filazzola A. Plant networks are more connected by invasive brome and native shrub facilitation in Central California drylands. Sci Rep 2024; 14:8958. [PMID: 38637667 PMCID: PMC11026385 DOI: 10.1038/s41598-024-59868-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 04/15/2024] [Indexed: 04/20/2024] Open
Abstract
Dominant vegetation in many ecosystems is an integral component of structure and habitat. In many drylands, native shrubs function as foundation species that benefit other plants and animals. However, invasive exotic plant species can comprise a significant proportion of the vegetation. In Central California drylands, the facilitative shrub Ephedra californica and the invasive Bromus rubens are widely dispersed and common. Using comprehensive survey data structured by shrub and open gaps for the region, we compared network structure with and without this native shrub canopy and with and without the invasive brome. The presence of the invasive brome profoundly shifted the network measure of centrality in the microsites structured by a shrub canopy (centrality scores increased from 4.3 under shrubs without brome to 6.3, i.e. a relative increase of 42%). This strongly suggests that plant species such as brome can undermine the positive and stabilizing effects of native foundation plant species provided by shrubs in drylands by changing the frequency that the remaining species connect to one another. The net proportion of positive and negative associations was consistent across all microsites (approximately 50% with a total of 14% non-random co-occurrences on average) suggesting that these plant-plant networks are rewired but not more negative. Maintaining resilience in biodiversity thus needs to capitalize on protecting native shrubs whilst also controlling invasive grass species particularly when associated with shrubs.
Collapse
Affiliation(s)
- C J Lortie
- Department of Biology, York University, Toronto, ON, M3J1P3, Canada
| | - Charlotte Brown
- Département de Biologie, Université de Sherbrooke, Voie 9, Sherbrooke, Québec, J1K 2R1, Canada
| | | | - Jacob Lucero
- Texas A & M, Department of Rangeland, Wildlife and Fisheries Management, 495 Horticulture Rd #305, College Station, TX, 77843-2183, USA
| | - Ragan Callaway
- Division of Biological Sciences, University of Montana, Missoula, MT, 59812, USA
| | - Jenna Braun
- Department of Biology, York University, Toronto, ON, M3J1P3, Canada
| | - Alessandro Filazzola
- Apex Resource Management Solutions, Ottawa, ON, Canada.
- Department of Biology, University of Western Ontario, London, ON, N6A 5B7, Canada.
| |
Collapse
|
6
|
Zhang X, Wang G, Peng P, Zhou Y, Chen Z, Feng Y, Wang Y, Shi S, Li J. Influences of environment, human activity, and climate on the invasion of Ageratina adenophora (Spreng.) in Southwest China. PeerJ 2023; 11:e14902. [PMID: 36919167 PMCID: PMC10008309 DOI: 10.7717/peerj.14902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 01/24/2023] [Indexed: 03/11/2023] Open
Abstract
With economic and social globalization, invasive alien species have significantly threatened local ecological security. Identifying the invasive mechanisms of invasive alien species can aid in preventing species invasions and protecting local ecological and economic security. As a globally invasive plant, Ageratina adenophora (Asteraceae) has spread to many parts of the world and had a seriously impacted the ecology and economy of its invaded areas. Using observational data and Landsat OLI images in an arid valley region in southwest China, this study examined how climate, human activity and environmental factors influence the invasion of A. adenophora and its underlying mechanism. Our results showed that the invasion abundance of A. adenophora was significantly affected by environmental factors (the relative importance was 87.2%), but was less influenced by human activity and climate factors (the relative importance was 2% and 10.8%, respectively). The A. adenophora abundance significantly decreased with aspect, community canopy density, shrub layer coverage, herb layer coverage, Simpson diversity index of shrub and herb layers, the shortest distance to residential areas and temperature seasonality, whereas it increased with soil moisture, temperature annual range, precipitation of wettest month and precipitation of driest month. We conclude that biotic competition is the most influential factor in the invasion of this plant in the arid valley regions. Our results are of great significance for invasion prevention and forest conservation and management in southwest China. Our work emphasized that optimizing the community structure, such as by increasing canopy and shrub coverage and species biodiversity, may help control and mitigate the A. adenophora invasion in southwest China.
Collapse
Affiliation(s)
- Xiaojuan Zhang
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of TechnologyChengdu, Sichuan, China
- College of Earth Sciences, Chengdu University of Technology, Chengdu, Sichuan, China
- Institute of Ecological Resources and Landscape, Chengdu University of Technology, Chengdu, Sichuan, China
| | - Guoyan Wang
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of TechnologyChengdu, Sichuan, China
- Institute of Ecological Resources and Landscape, Chengdu University of Technology, Chengdu, Sichuan, China
| | - Peihao Peng
- College of Earth Sciences, Chengdu University of Technology, Chengdu, Sichuan, China
- Institute of Ecological Resources and Landscape, Chengdu University of Technology, Chengdu, Sichuan, China
- College of Tourism and Urban-Rural Planning, Chengdu University of Technology, Chengdu, Sichuan, China
| | - Yongxiu Zhou
- College of Geophysics, Chengdu University of Technolog, Chengdu, Sichuan, China
| | - Zhuo Chen
- College of Earth Sciences, Chengdu University of Technology, Chengdu, Sichuan, China
- Institute of Ecological Resources and Landscape, Chengdu University of Technology, Chengdu, Sichuan, China
| | - Yu Feng
- College of Earth Sciences, Chengdu University of Technology, Chengdu, Sichuan, China
| | - Yanru Wang
- College of Earth Sciences, Chengdu University of Technology, Chengdu, Sichuan, China
| | - Songlin Shi
- College of Earth Sciences, Chengdu University of Technology, Chengdu, Sichuan, China
- Institute of Ecological Resources and Landscape, Chengdu University of Technology, Chengdu, Sichuan, China
| | - Jingji Li
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of TechnologyChengdu, Sichuan, China
- Institute of Ecological Resources and Landscape, Chengdu University of Technology, Chengdu, Sichuan, China
| |
Collapse
|
7
|
Chen J, Liu Z, Cui H, Song H, Wang J, Gao H, Chen S, Liu K, Yang Z, Wang Y, Wang X, Yang X, Meng L, An L, Xiao S, Le Bagousse-Pinguet Y. Direct and indirect effects of dominant plants on ecosystem multifunctionality. FRONTIERS IN PLANT SCIENCE 2023; 14:1117903. [PMID: 36938009 PMCID: PMC10017997 DOI: 10.3389/fpls.2023.1117903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 02/17/2023] [Indexed: 06/18/2023]
Abstract
Biodiversity is essential for the provision of multiple ecosystem functions simultaneously (ecosystem multifunctionality EMF). Yet, it remains unclear whether and how dominant plant species impact EMF. Here, we aimed at disentangling the direct from indirect above- and belowground pathways by which dominant plant species influence EMF. We evaluated the effects of two dominant plant species (Dasiphora fruticosa, and the toxic perennial plant Ligularia virgaurea) with expected positive and negative impacts on the abiotic environment (soil water content and pH), surrounding biological communities (plant and nematode richness, biomass, and abundance in the vicinity), and on the EMF of alpine meadows, respectively. We found that the two dominant plants enhanced EMF, with a positive effect of L. virgaurea on EMF greater than that of D. fruticosa. We also observed that dominant plants impacted on EMF through changes in soil water content and pH (indirect abiotic effects), but not through changes in biodiversity of surrounding plants and nematodes (indirect biotic pathway). Our study suggests that dominant plants may play an important role in promoting EMF, thus expanding the pervasive mass-ratio hypothesis originally framed for individual functions, and could mitigate the negative impacts of vegetation changes on EMF in the alpine meadows.
Collapse
Affiliation(s)
- Jingwei Chen
- State Key Laboratory of Grassland and Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou, Gansu, China
| | - Ziyang Liu
- State Key Laboratory of Grassland and Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou, Gansu, China
| | - Hanwen Cui
- State Key Laboratory of Grassland and Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou, Gansu, China
| | - Hongxian Song
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu, China
| | - Jiajia Wang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu, China
| | - Haining Gao
- College of Life Science and Engineering, Hexi University, Zhangye, Gansu, China
| | - Shuyan Chen
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu, China
| | - Kun Liu
- State Key Laboratory of Grassland and Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou, Gansu, China
| | - Zi Yang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu, China
| | - Yajun Wang
- State Key Laboratory of Grassland and Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou, Gansu, China
| | - Xiangtai Wang
- State Key Laboratory of Grassland and Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou, Gansu, China
| | - Xiaoli Yang
- State Key Laboratory of Grassland and Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou, Gansu, China
| | - Lihua Meng
- State Key Laboratory of Grassland and Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou, Gansu, China
| | - Lizhe An
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu, China
| | - Sa Xiao
- State Key Laboratory of Grassland and Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou, Gansu, China
| | - Yoann Le Bagousse-Pinguet
- Aix Marseille Univ, Centre national de la recherche scientifique, Avignon Université, Institut de Recherche pour le Développement, Institut Méditerranéen de Biodiversité et d’Écologie marine et continentale, Technopôle Arbois-Méditerranée, Aix-en-Provence, France
| |
Collapse
|
8
|
Cadotte MW. Quantifying and linking mechanism scenarios to invasive species impact. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2023; 33:e2777. [PMID: 36377921 DOI: 10.1002/eap.2777] [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: 08/14/2022] [Accepted: 09/12/2022] [Indexed: 06/16/2023]
Abstract
Plant species invasion represents one of the major drivers of biodiversity change globally, yet there is confusion about the nature of nonindigenous species (NIS) impact. This confusion stems from differing notions of what constitutes invasive species impact and the scales at which it should be assessed. At local scales, the mechanisms of the impact on local competitors can be classified into four scenarios: (1) minimal impact from NIS inhabiting unique niches; (2) neutral impact spread across the community and proportional to NIS abundance; (3) targeted impact on a small number of competitors with overlapping niches; and (4) pervasive impact that is disproportionate to NIS abundance and caused by modifications that filter out other species. I developed a statistical test to distinguish these four mechanism scenarios based on plant community rank-abundance curves and then created a scale-independent standardized impact score. Using an example long-term dataset with high native plant diversity and an abundance gradient of the invasive vine, Vincetoxicum rossicum, I show that the impact resulted in either targeted or pervasive extirpations. Regardless of whether the NIS impact is neutral, targeted, or pervasive, the net outcome will be the homogenization of ecosystems and reduced biodiversity at larger scales, perhaps reducing ecosystem resilience. The framework and statistical evaluation of impact presented in this paper provide researchers and managers with an objective approach to quantifying NIS impact and prioritizing species for further management actions.
Collapse
Affiliation(s)
- Marc William Cadotte
- Department of Biological Sciences, University of Toronto-Scarborough, Toronto, Ontario, Canada
| |
Collapse
|
9
|
Wasan JPM, Pyle LA, Bennett JA. Disturbance and nutrient availability drive absinthe ( Artemisia absinthium) invasion in a native rough fescue grassland. ECOSCIENCE 2023. [DOI: 10.1080/11956860.2023.2165283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- John Paul M Wasan
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK, Canada
| | - Lysandra A. Pyle
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK, Canada
- Alberta Biodiversity Monitoring Institute, University of Alberta, Edmonton, AB, Canada
| | - Jonathan A. Bennett
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK, Canada
| |
Collapse
|
10
|
Xian X, Zhao H, Wang R, Zhang H, Chen B, Liu W, Wan F. Evidence of the niche expansion of crofton weed following invasion in China. Ecol Evol 2023; 13:e9708. [PMID: 36620415 PMCID: PMC9817199 DOI: 10.1002/ece3.9708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 12/15/2022] [Accepted: 12/16/2022] [Indexed: 01/09/2023] Open
Abstract
Niche dynamics of invasive alien plants (IAPs) play pivotal roles in biological invasion. Ageratina adenophora-one of the most aggressive IAPs in China and some parts of the world-poses severe ecological and socioeconomic threats. However, the spatiotemporal niche dynamics of A. adenophora in China remain unknown, which we aimed to elucidate in the present study. China, Mexico; using a unifying framework, we reconstructed the climate niche dynamics of A. adenophora and applied the optimal MaxEnt model to predict its potential geographical distribution in China. Furthermore, we compared the heterogeneity of A. adenophora niche between Mexico (native) and China (invasive). We observed a low niche overlap between Mexico (native) and China (invasive). Specifically, the niche of A. adenophora in China has distinctly expanded compared to that in Mexico, enhancing the invasion risk of this IAP in the former country. In fact, the climatic niche of A. adenophora in Mexico is a subset of that in China. The potential geographical distribution of A. adenophora is concentrated in the tropical and subtropical zones of Southwest China, and its geographical distribution pattern in China is shaped by the combination of precipitation and temperature variables. The niche dynamics of A. adenophora follow the hypothesis of niche shift and conservatism. The present work provides a unifying framework for studies on the niche dynamics of other IAPs worldwide.
Collapse
Affiliation(s)
- Xiaoqing Xian
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant Protection, Chinese Academy of Agricultural ScienceBeijingChina
| | - Haoxiang Zhao
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant Protection, Chinese Academy of Agricultural ScienceBeijingChina
| | - Rui Wang
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant Protection, Chinese Academy of Agricultural ScienceBeijingChina
| | - Hongbin Zhang
- Rural Energy and Environment AgencyMinistry of Agriculture and Rural AffairsBeijingChina
| | - Baoxiong Chen
- Rural Energy and Environment AgencyMinistry of Agriculture and Rural AffairsBeijingChina
| | - Wanxue Liu
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant Protection, Chinese Academy of Agricultural ScienceBeijingChina
| | - Fanghao Wan
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant Protection, Chinese Academy of Agricultural ScienceBeijingChina
| |
Collapse
|
11
|
Chen L, Wang M, Shi Y, Ma P, Xiao Y, Yu H, Ding J. Soil phosphorus form affects the advantages that arbuscular mycorrhizal fungi confer on the invasive plant species, Solidago canadensis, over its congener. Front Microbiol 2023; 14:1160631. [PMID: 37125154 PMCID: PMC10140316 DOI: 10.3389/fmicb.2023.1160631] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 03/28/2023] [Indexed: 05/02/2023] Open
Abstract
Interactions between plants and arbuscular mycorrhizal fungi (AMF) are strongly affected by soil phosphorus (P) availability. However, how P forms impact rhizosphere AMF diversity, community composition, and the co-occurrence network associated with native and invasive plants, and whether these changes in turn influence the invasiveness of alien species remain unclear. In this work, we performed a greenhouse experiment with the invasive species Solidago canadensis and its native congener S. decurrens to investigate how different forms of P altered the AMF community and evaluate how these changes were linked with the growth advantage of S. canadensis relative to S. decurrens. Plants were subjected to five different P treatments: no P addition (control), simple inorganic P (sodium dihydrogen phosphate, NaP), complex inorganic P (hydroxyapatite, CaP), simple organic P (adenosine monophosphate, AMP) and complex organic P (myo-inositol hexakisphosphate, PA). Overall, invasive S. canadensis grew larger than native S. decurrens across all P treatments, and this growth advantage was strengthened when these species were grown in CaP and AMP treatments. The two Solidago species harbored divergent AMF communities, and soil P treatments significantly shifted AMF community composition. In particular, the differences in AMF diversity, community composition, topological features and keystone taxa of the co-occurrence networks between S. canadensis and S. decurrens were amplified when the dominant form of soil P was altered. Despite significant correlations between AMF alpha diversity, community structure, co-occurrence network composition and plant performance, we found that alpha diversity and keystone taxa of the AMF co-occurrence networks were the primary factors influencing plant growth and the growth advantage of invasive S. canadensis between soil P treatments. These results suggest that AMF could confer invasive plants with greater advantages over native congeners, depending on the forms of P in the soil, and emphasize the important roles of multiple AMF traits in plant invasion.
Collapse
Affiliation(s)
- Li Chen
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
| | - Mengqi Wang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
| | - Yu Shi
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
| | - Pinpin Ma
- College of Life Sciences, Jiangxi Science and Technology Normal University, Nanchang, China
| | - Yali Xiao
- School of Life Sciences and Agricultural Engineering, Nanyang Normal University, Nanyang, China
| | - Hongwei Yu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
- *Correspondence: Hongwei Yu, ; Jianqing Ding,
| | - Jianqing Ding
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
- *Correspondence: Hongwei Yu, ; Jianqing Ding,
| |
Collapse
|
12
|
Liu Y, Li W, Sui X, Li A, Li K, Gong Y. An exotic plant successfully invaded as a passenger driven by light availability. FRONTIERS IN PLANT SCIENCE 2022; 13:1047670. [PMID: 36570959 PMCID: PMC9767969 DOI: 10.3389/fpls.2022.1047670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 11/17/2022] [Indexed: 06/17/2023]
Abstract
Invasive exotic plant species (IEPs) are widely distributed across the globe, but whether IEPs are drivers or passengers of habitat change in the invaded spaces remains unclear. Here, we carried out a vegetation and soil survey in 2018 and two independent field experiments (Pedicularis kansuensis removal in 2014 and 2015, and fertilization experiment since 2012) and found that the invasive annual P. kansuensis was at a disadvantage in light competition compared with perennial native grasses, but the successful invasion of P. kansuensis was due to the sufficient light resources provided by the reduced coverage of the native species. Conversely, nitrogen enrichment can effectively inhibit P. kansuensis invasion by increasing the photocompetitive advantage of the native species. sP. kansuensis invasion did not reduce species richness, but did increase plant community coverage, productivity and soil nutrients. Furthermore, the removal of P. kansuensis had little effect on the plant community structure and soil properties. Our results suggest that the passenger model perfectly explains the benign invasive mechanism of P. kansuensis. The invasion "ticket" of P. kansuensis is a spare ecological niche for light resources released by overgrazing.
Collapse
Affiliation(s)
- Yanyan Liu
- Bayinbuluk Grassland Ecosystem Research Station, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
- Chinese Academy of Sciences (CAS) Research Center for Ecology and Environment of Central Asia, Urumqi, China
| | - Wenjun Li
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
| | - Xiaolin Sui
- Yunnan Key Laboratory for Wild Plant Resources, Department of Economic Plants and Biotechnology, Chinese Academy of Sciences, Kunming, China
| | - Airong Li
- Yunnan Key Laboratory for Wild Plant Resources, Department of Economic Plants and Biotechnology, Chinese Academy of Sciences, Kunming, China
| | - Kaihui Li
- Bayinbuluk Grassland Ecosystem Research Station, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
- Chinese Academy of Sciences (CAS) Research Center for Ecology and Environment of Central Asia, Urumqi, China
| | - Yanming Gong
- Bayinbuluk Grassland Ecosystem Research Station, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
- Chinese Academy of Sciences (CAS) Research Center for Ecology and Environment of Central Asia, Urumqi, China
| |
Collapse
|
13
|
Potgieter LJ, Shrestha N, Cadotte MW. Prioritizing terrestrial invasive alien plant species for management in urban ecosystems. J Appl Ecol 2021. [DOI: 10.1111/1365-2664.14103] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Luke J. Potgieter
- Department of Biological Sciences University of Toronto‐Scarborough Toronto ON Canada
| | | | - Marc W. Cadotte
- Department of Biological Sciences University of Toronto‐Scarborough Toronto ON Canada
| |
Collapse
|
14
|
Antoł A, Sniegula S. Damselfly eggs alter their development rate in the presence of an invasive alien cue but not a native predator cue. Ecol Evol 2021; 11:9361-9369. [PMID: 34306627 PMCID: PMC8293780 DOI: 10.1002/ece3.7729] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 04/19/2021] [Accepted: 05/12/2021] [Indexed: 11/10/2022] Open
Abstract
Biological invasions are a serious problem in natural ecosystems. Local species that are potential prey of invasive alien predators can be threatened by their inability to recognize invasive predator cues. Such an inability of prey to recognize the presence of the predator supports the naïve prey hypothesis. We exposed eggs of a damselfly, Ischnura elegans, to four treatments: water with no predator cue (control), water with a native predator cue (perch), water with an invasive alien predator cue (spinycheek crayfish) that is present in the damselfly sampling site, and water with an invasive alien predator cue (signal crayfish) that is absent in the damselfly sampling site but is expected to invade it. We measured egg development time, mortality between ovipositing and hatching, and hatching synchrony. Eggs took longer to develop in the signal crayfish group (however, in this group, we also observed high green algae growth), and there was a trend of shorter egg development time in the spinycheek crayfish group than in the control group. There was no difference in egg development time between the perch and the control group. Neither egg mortality nor hatching synchrony differed between groups. We suggest that egg response to signal crayfish could be a general stress reaction to an unfamiliar cue or an artifact due to algae development in this group. The egg response to the spinycheek crayfish cue could be caused by the predation of crayfish on damselfly eggs in nature. The lack of egg response to the perch cue could be caused by perch predation on damselfly larvae rather than on eggs. Such differences in egg responses to alternative predator cues can have important implications for understanding how this group of insects responds to biological invasions, starting from the egg stage.
Collapse
Affiliation(s)
- Andrzej Antoł
- Institute of Nature ConservationPolish Academy of SciencesKrakówPoland
| | - Szymon Sniegula
- Institute of Nature ConservationPolish Academy of SciencesKrakówPoland
| |
Collapse
|
15
|
Potgieter LJ, Cadotte MW. The application of selected invasion frameworks to urban ecosystems. NEOBIOTA 2020. [DOI: 10.3897/neobiota.62.50661] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Urbanization is a major driver of global change. Profound human-mediated changes to urban environments have provided increased opportunities for species to invade. The desire to understand and manage biological invasions has led to an upsurge in frameworks describing the mechanisms underpinning the invasion process and the ecological and socio-economic impacts of invading taxa. This paper assesses the applicability of three commonly used invasion frameworks to urban ecosystems. The first framework describes the mechanisms leading to invasion; the second and third frameworks assess individual species, and their associated environmental and socio-economic impacts, respectively.
In urban areas, the relative effectiveness of the barriers to invasion is diminished (to varying degrees) allowing a greater proportion of species to move through each subsequent invasion stage, i.e. “the urban effect” on invasion. Impact classification schemes inadequately circumscribe the full suite of impacts (negative and positive) associated with invasions in urban areas. We suggest ways of modifying these frameworks to improve their applicability to understanding and managing urban invasions.
Collapse
|