Contrasting trait responses to latitudinal climate variation in two lineages of an invasive grass

Mozdzer, Thomas J.; Caplan, Joshua S.; Hager, Rachel Nia; Meyerson, Laura A.

doi:10.1007/s10530-016-1218-y

Cited by 14 publications

(19 citation statements)

References 39 publications

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“…3 Planted species (a) relative percent of cover (i.e., percent of total cover that is the planted species) and (b) maximum stem height (cm). Bars indicate the standard error of the mean values superior competitive performance of the M haplotype identified conflicts with findings from a common garden study conducted in freshwater conditions with individually potted plants (Mozdzer et al 2016). In that study, haplotype I had greater total, aboveground, and belowground biomass and maximum stem height compared to haplotype M, but lower stem density (Mozdzer et al 2016).…”

Section: Discussionmentioning

confidence: 62%

Plant Community Establishment in a Coastal Marsh Restored Using Sediment Additions

2019

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A goal of wetland restoration is the establishment of resilient plant communities that persist under a variety of environmental conditions. We investigated the role of intraspecific and interspecific variation on plant community establishment in a brackish marsh that had been restored by sediment addition. Plant growth, sediment accretion, and surface elevation change in planted, not-planted, and nearby reference sites (treatments) were compared. Four perennial macrophytes were planted: Bolboschoenus robustus, Distichlis spicata, Phragmites australis, and Schoenoplectus californicus. There was 100% survival of the planted species, and all exhibited rapid vegetative spread. Intraspecific variation in stem height and cover was identified, and interspecific comparisons also indicated differences in species cover. Treatment comparisons revealed that final total cover at not-planted sites was equivalent to that at reference sites, and was highest at planted sites where P. australis became dominant. Species richness was initially highest at the reference sites, but final richness was equivalent among treatments. Soil surface elevation was greater at planted compared to not-planted and reference sites. Because of the rapid cover and increased surface elevation generated by planted species, the resiliency of restored coastal marshes may be enhanced by plantings in areas where natural colonization is slow and subsidence is high.

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Section: Discussionmentioning

confidence: 62%

Plant Community Establishment in a Coastal Marsh Restored Using Sediment Additions

2019

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“…Other environmental factors had more important effects. This was a surprising result given that earlier studies in the field and in common gardens found latitude of origin to also influence multiple traits of P. australis such as stem height, stem density, plant biomass, nutritional condition, plant defense, and herbivory (Cronin et al 2015, Mozdzer et al 2016). For example, Cronin et al (2015) conducted a field study which found that environmental factors and genetic factors combined to influence plant traits.…”

Section: Discussionmentioning

confidence: 95%

Plant genome size influences stress tolerance of invasive and native plants via plasticity

et al. 2020

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Citation: Meyerson, L. A., P. Py sek, M. Lu canov a, S. Wigginton, C.-T. Tran, and J. T. Cronin. 2020. Plant genome size influences stress tolerance of invasive and native plants via plasticity. Ecosphere 11(5):Abstract. Plant genome size influences the functional relationships between cellular and whole-plant physiology, but we know little about its importance to plant tolerance of environmental stressors and how it contributes to range limits and invasion success. We used native and invasive lineages of a wetland plant to provide the first experimental test of the Large Genome Constraint Hypothesis (LGCH)-that plants with large genomes are less tolerant of environmental stress and less plastic under stress gradients than plants with small genomes. We predicted that populations with larger genomes would have a lower tolerance and less plasticity to a stress gradient than populations with smaller genomes. In replicated experiments in northern and southern climates in the United States, we subjected plants from 35 populations varying in genome size and lineage to two salinity treatments. We measured traits associated with growth, physiology, nutrition, defense, and plasticity. Using AICc model selection, we found all plant traits, except stomatal conductance, were influenced by environmental stressors and genome size. Increasing salinity was stressful to plants and affected most plant traits. Notably, biomass in the high-salinity treatment was 3.0 and 4.9 times lower for the invasive and native lineages, respectively. Plants in the warmer southern greenhouse had higher biomass, stomate density, stomatal conductance, leaf toughness, and lower aboveground percentage of N and total phenolics than in the northern greenhouse. Moreover, responses to the salinity gradient were generally much stronger in the southern than northern greenhouse. Aboveground biomass increased significantly with genome size for the invasive lineage (43% across genome sizes) but not for the native. For 8 of 20 lineage trait comparisons, greenhouse location 9 genome size interaction was also significant. Interestingly, the slope of the relationship between genome size and trait means was in the opposite direction for some traits between the gardens providing mixed support for LGCH. Finally, for 30% of the comparisons, plasticity was significantly related to genome size-for some plant traits, the relationship was positive, and in others, it was negative. Overall, we found mixed support for LGCH and for the first time found that genome size is associated with plasticity, a trait widely regarded as important to invasion success.

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“…australis, and create niche differentiation among P. australis and resident wetland plants (Mozdzer et al, 2016).…”

Section: Effects On Vegetation Communitiesmentioning

confidence: 99%

Long-term effects of a Phragmites australis invasion on birds in a Lake Erie coastal marsh

Robichaud

Rooney

2017

Journal of Great Lakes Research

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Contrasting trait responses to latitudinal climate variation in two lineages of an invasive grass

Cited by 14 publications

References 39 publications

Plant Community Establishment in a Coastal Marsh Restored Using Sediment Additions

Plant Community Establishment in a Coastal Marsh Restored Using Sediment Additions

Plant genome size influences stress tolerance of invasive and native plants via plasticity

Long-term effects of a Phragmites australis invasion on birds in a Lake Erie coastal marsh

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