Beyond Single Invaders: Disentangling the Effects of Co-Invading Alien Forbs on Sandy Old-Fields

IF 2.7 3区环境科学与生态学 Q2 ECOLOGY

Journal of Vegetation Science Pub Date : 2025-09-23 DOI:10.1111/jvs.70068

Attila Lengyel

{"title":"Beyond Single Invaders: Disentangling the Effects of Co-Invading Alien Forbs on Sandy Old-Fields","authors":"Attila Lengyel","doi":"10.1111/jvs.70068","DOIUrl":null,"url":null,"abstract":"<div>\n \n \n <section>\n \n <h3> Aims</h3>\n \n <p>Invasive alien plants can severely impact ecosystem diversity and function. While the effects of individual species are often studied, interactions between multiple invasive species are less understood. This study examines how <i>Asclepias syriaca</i> and <i>Solidago</i> spp. (including <i>Solidago gigantea</i> and <i>S. canadensis</i>) influence taxonomic and functional diversity in sandy old-fields. The aims are to: (1) assess the individual and combined impacts of <i>Asclepias</i> and <i>Solidago</i> on resident plant diversity and (2) determine whether interactions between these species alter their effects on the invaded community.</p>\n </section>\n \n <section>\n \n <h3> Location</h3>\n \n <p>Gödöllő Hills, Central Hungary.</p>\n </section>\n \n <section>\n \n <h3> Methods</h3>\n \n <p>I sampled 80 plots (2 m × 2 m) on sandy old-fields with varying levels of <i>Asclepias</i> and <i>Solidago</i> cover. Plant species cover was visually estimated, and trait data were obtained from databases. Species richness, community completeness, and community-weighted means (CWM) for plant traits, along with Rao functional diversity, were analyzed. Generalized linear and mixed models were used to evaluate the effect of invasive cover on resident diversity and traits, both with and without considering the invasives' traits in community indices.</p>\n </section>\n \n <section>\n \n <h3> Results</h3>\n \n <p>While <i>Asclepias</i> had no significant effect, <i>Solidago</i> cover significantly reduced species richness and community completeness. When invasive species traits were excluded from the analysis, only the CWM and Rao's diversity of the bud bank index were significantly related to <i>Solidago</i> cover. Including the invasives' traits revealed that their trait values influenced community indices significantly. <i>Asclepias</i> and <i>Solidago</i> cover were negatively correlated, but did not alter each other's effects.</p>\n </section>\n \n <section>\n \n <h3> Conclusions</h3>\n \n <p><i>Solidago</i> has a stronger negative impact on resident species richness than <i>Asclepias</i>, which appears neutral. Trait-based mechanisms underlying reduced species richness under <i>Solidago</i> dominance require further investigation. The lack of interaction between these invaders suggests their individual impacts dominate over potential synergies or antagonisms.</p>\n </section>\n </div>","PeriodicalId":49965,"journal":{"name":"Journal of Vegetation Science","volume":"36 5","pages":""},"PeriodicalIF":2.7000,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jvs.70068","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Vegetation Science","FirstCategoryId":"93","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/jvs.70068","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ECOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

Aims

Invasive alien plants can severely impact ecosystem diversity and function. While the effects of individual species are often studied, interactions between multiple invasive species are less understood. This study examines how Asclepias syriaca and Solidago spp. (including Solidago gigantea and S. canadensis) influence taxonomic and functional diversity in sandy old-fields. The aims are to: (1) assess the individual and combined impacts of Asclepias and Solidago on resident plant diversity and (2) determine whether interactions between these species alter their effects on the invaded community.

Location

Gödöllő Hills, Central Hungary.

Methods

I sampled 80 plots (2 m × 2 m) on sandy old-fields with varying levels of Asclepias and Solidago cover. Plant species cover was visually estimated, and trait data were obtained from databases. Species richness, community completeness, and community-weighted means (CWM) for plant traits, along with Rao functional diversity, were analyzed. Generalized linear and mixed models were used to evaluate the effect of invasive cover on resident diversity and traits, both with and without considering the invasives' traits in community indices.

Results

While Asclepias had no significant effect, Solidago cover significantly reduced species richness and community completeness. When invasive species traits were excluded from the analysis, only the CWM and Rao's diversity of the bud bank index were significantly related to Solidago cover. Including the invasives' traits revealed that their trait values influenced community indices significantly. Asclepias and Solidago cover were negatively correlated, but did not alter each other's effects.

Conclusions

Solidago has a stronger negative impact on resident species richness than Asclepias, which appears neutral. Trait-based mechanisms underlying reduced species richness under Solidago dominance require further investigation. The lack of interaction between these invaders suggests their individual impacts dominate over potential synergies or antagonisms.

Abstract Image

查看原文本刊更多论文

超越单一入侵者：解开共同入侵的外星Forbs对Sandy Old-Fields的影响

目的外来植物入侵严重影响生态系统的多样性和功能。虽然个体物种的影响经常被研究，但多种入侵物种之间的相互作用却鲜为人知。本研究探讨了叙利亚黄花苜蓿（Asclepias syriaca）和加拿大黄花苜蓿（Solidago gigantea和S. canadensis）对沙质老田植物分类和功能多样性的影响。研究的目的是：(1)评估金牛花和一枝黄花对入侵植物多样性的单独和联合影响；(2)确定这两种植物之间的相互作用是否会改变它们对入侵群落的影响。位置Gödöllő匈牙利中部山丘。方法在沙质老田取样80个样地（面积2 m × 2 m），样地覆盖不同程度的牛膝草和一枝黄花。目测植物物种盖度，从数据库中获取性状数据。分析了植物物种丰富度、群落完整性、群落加权平均值（CWM）和Rao功能多样性。采用广义线性模型和混合模型，在考虑和不考虑群落指数中入侵物种特征的情况下，评价了入侵覆盖对生物多样性和生物性状的影响。结果黄花蒿覆盖对植物群落的丰富度和完整性影响不显著，黄花蒿覆盖显著降低了植物群落的丰富度和完整性。在排除入侵物种特征的情况下，只有CWM和Rao's芽库多样性指数与黄花盖度显著相关。包括入侵物种的性状，表明其性状值对群落指数有显著影响。黄花和黄花覆被呈负相关，但不改变彼此的影响。结论一枝黄花对常住物种丰富度的负向影响强于牛蒡草，呈中性。一枝黄花优势下物种丰富度降低的性状机制有待进一步研究。这些入侵者之间缺乏相互作用，表明它们的个体影响比潜在的协同作用或对抗作用更重要。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Vegetation Science 环境科学-林学

CiteScore

6.00

自引率

3.60%

发文量

审稿时长

2 months

期刊介绍： The Journal of Vegetation Science publishes papers on all aspects of plant community ecology, with particular emphasis on papers that develop new concepts or methods, test theory, identify general patterns, or that are otherwise likely to interest a broad international readership. Papers may focus on any aspect of vegetation science, e.g. community structure (including community assembly and plant functional types), biodiversity (including species richness and composition), spatial patterns (including plant geography and landscape ecology), temporal changes (including demography, community dynamics and palaeoecology) and processes (including ecophysiology), provided the focus is on increasing our understanding of plant communities. The Journal publishes papers on the ecology of a single species only if it plays a key role in structuring plant communities. Papers that apply ecological concepts, theories and methods to the vegetation management, conservation and restoration, and papers on vegetation survey should be directed to our associate journal, Applied Vegetation Science journal.