Functional Traits and Reproductive Allocation Strategy of Conyza canadensis as they Vary by Invasion Degree Along a Latitude Gradient

Wang, Congyan; Zhou, Jiawei; Liu, Jun; Xiao, Hongguang; Wang, Lei

doi:10.15244/pjoes/66175

Cited by 23 publications

(15 citation statements)

References 27 publications

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“…Field data from four Chinese populations showed that growth performance of C. canadensis can vary substantially among climatic conditions within a small geographical region (Wang et al. ), which might indicate broad adaptive abilities to climatic gradients.…”

Section: Methodsmentioning

confidence: 99%

“…In some parts of its nonnative range (e.g., China), C. canadensis forms highly dominant stands (Weber et al 2008), but such high impact does not occur in the native ranges nor in most parts of its nonnative ranges (C. Rosche and M. A. Shah, personal observations). Field data from four Chinese populations showed that growth performance of C. canadensis can vary substantially among climatic conditions within a small geographical region (Wang et al 2017), which might indicate broad adaptive abilities to climatic gradients.…”

Section: Study Speciesmentioning

confidence: 99%

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Climate outweighs native vs. nonnative range‐effects for genetics and common garden performance of a cosmopolitan weed

Rosche

Hensen

Schaar

et al. 2019

Ecological Monographs

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Comparing genetic diversity, genetic differentiation, and performance between native and nonnative populations has advanced our knowledge of contemporary evolution and its ecological consequences. However, such between‐range comparisons can be complicated by high among‐population variation within native and nonnative ranges. For example, native vs. nonnative comparisons between small and non‐representative subsets of populations for species with very large distributions have the potential to mislead because they may not sufficiently account for within‐range adaptation to climatic conditions, and demographic history that may lead to non‐adaptive evolution. We used the cosmopolitan weed Conyza canadensis to study the interplay of adaptive and demographic processes across, to our knowledge, the broadest climatic gradient yet investigated in this context. To examine the distribution of genetic diversity, we genotyped 26 native and 26 nonnative populations at 12 microsatellite loci. Furthermore, we recorded performance traits for 12 native and 13 nonnative populations in the field and in the common garden. To analyze how performance was related to range and/or climate, we fit pedigree mixed‐effects models. These models weighed the population random effect for co‐ancestry to account for the influence of demographic history on phenotypic among‐population differentiation. Genetic diversity was very low, selfing rates were very high, and both were comparable between native and nonnative ranges. Nonnative populations out‐performed native populations in the field. However, our most salient result was that both neutral genetic differentiation and common garden performance were far more correlated with the climatic conditions from which populations originated than native vs. nonnative range affiliation. Including co‐ancestry of our populations in our models greatly increased explained variance and our ability to detect significant main effects for among‐population variation in performance. High propagule pressure and high selfing rates, in concert with the ability to adapt rapidly to climatic gradients, may have facilitated the global success of this weed. Neither native nor nonnative populations were homogeneous groups but responded comparably to similar environments in each range. We suggest that studies of contemporary evolution should consider widely distributed and genotyped populations to disentangle native vs. nonnative range effects from varying adaptive processes within ranges and from potentially confounding effects of demographic history.

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Section: Methodsmentioning

confidence: 99%

Section: Study Speciesmentioning

confidence: 99%

Climate outweighs native vs. nonnative range‐effects for genetics and common garden performance of a cosmopolitan weed

Rosche

Hensen

Schaar

et al. 2019

Ecological Monographs

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“…; Wilson & Pinno ; Wang et al . ,c). More importantly, the successful establishment of one invasive species could create a microenvironment in the invaded ecosystems that might increase the possibility of successful colonisation of subsequent invaders (Flory & Bauer ; Kuebbing et al .…”

Section: Introductionmentioning

confidence: 99%

Responses of the soil fungal communities to the co‐invasion of two invasive species with different cover classes

et al. 2017

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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.

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“…Invasive alien species (IAS) are known to induce distinct variations in both the structure and function of native ecosystems (Powell, Chase, & Knight, ; Vilà et al, ; Wang, Jiang, Liu, Zhou, & Wu, ; Wang, Jiang, Zhou, & Wu, ; Wang, Zhou, Liu, & Xiao, ). IAS and native plant species (natives) share the same habitat and experience similar or even identical environmental selection pressures, but differences in functional traits between IAS and coexisting natives have been suggested as key factors for successful invasions (Gross, Börger, Duncan, & Hulme, ; Hulme & Bernard‐Verdier, , ; van Kleunen, Weber, & Fischer, ).…”

Section: Introductionmentioning

confidence: 99%

“…IAS and native plant species (natives) share the same habitat and experience similar or even identical environmental selection pressures, but differences in functional traits between IAS and coexisting natives have been suggested as key factors for successful invasions (Gross, Börger, Duncan, & Hulme, ; Hulme & Bernard‐Verdier, , ; van Kleunen, Weber, & Fischer, ). Furthermore, an IAS may spread across multiple climate zones (Wang, Zhou, Liu, et al, ; Weber, Sun, & Li, 2008; Yan et al, ). Thus, understanding the differences of functional traits between IAS and coexisting natives in different climate zones is important for an understanding of the mechanisms underlying successful plant invasions.…”

Section: Introductionmentioning

confidence: 99%

Erigeron canadensis affects the taxonomic and functional diversity of plant communities in two climate zones in the North of China

Zhang²,

Jiang

et al. 2019

Ecological Research

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Plant communities across multiple climate zones are at risk of invasive species. Understanding the effects of invasive alien species on both the taxonomic and functional diversities of plant communities in different climate zones enables insight into the mechanisms underlying successful invasions. This study investigated the effects of Erigeron canadensis at different degrees of invasion on both the plant taxonomic and functional diversities in the Chinese zones of Jinan (warm temperate climate) and Zhenjiang (north subtropical climate). A high degree of E. canadensis invasion resulted in a stronger decrease of plant diversity compared to a light degree of E. canadensis invasion. This may be because E. canadensis invasion can lead to a decrease in the number of native species via competition and subsequent local extinction. A high degree of E. canadensis invasion increased the Rao's quadratic entropy of plant height and ground cover. This may be because both the plant height and ground cover of E. canadensis and natives increased with increasing degree of E. canadensis invasion. The number of plant species in plant communities was lower in Jinan than in Zhenjiang. This is presumably because E. canadensis grows better in Jinan than in Zhenjiang and therefore, rare species are more likely to go extinct there. A small number of functional diversity indices of Jinan plant communities were higher than those of Zhenjiang. This may be due to the higher value of functional traits of E. canadensis in Jinan.

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Functional Traits and Reproductive Allocation Strategy of Conyza canadensis as they Vary by Invasion Degree Along a Latitude Gradient

Cited by 23 publications

References 27 publications

Climate outweighs native vs. nonnative range‐effects for genetics and common garden performance of a cosmopolitan weed

Climate outweighs native vs. nonnative range‐effects for genetics and common garden performance of a cosmopolitan weed

Responses of the soil fungal communities to the co‐invasion of two invasive species with different cover classes

Erigeron canadensis affects the taxonomic and functional diversity of plant communities in two climate zones in the North of China

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