Biogeographic gradients in ecosystem processes of the invasive ecosystem engineer Phragmites australis

Hughes, A. Randall; Schenck, Forest R.; Bloomberg, Jeanne; Hanley, Torrance C.; Feng, Dongmei; Gouhier, Tarik C.; Beighley, R. Edward; Kimbro, David L.

doi:10.1007/s10530-016-1143-0

Cited by 14 publications

(11 citation statements)

References 61 publications

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“…However, a recent study by Hughes et al . () demonstrated that stem density of the invasive lineage was highest at more northern latitudes, consistent with our findings of stronger enemy release for more northern populations. In contrast, a study of historical aerial imagery from the east coast of North America found no latitudinal variation in the rate of increase of invasive P. australis populations (Bhattarai & Cronin, 2014), suggesting there may be no corresponding variation in invasion success of P. australis .…”

Section: Discussionsupporting

confidence: 91%

“…Moreover, there have been few studies that have quantified the establishment, fitness and spread of P. australis at different latitudes, which could more directly test whether biogeographical gradients in the strength of enemy release translate into gradients in invasion success. However, a recent study by Hughes et al (2016) demonstrated that stem density of the invasive lineage was highest at more northern latitudes, consistent with our findings of stronger enemy release for more northern populations. In contrast, a study of historical aerial imagery from the east coast of North America found no latitudinal variation in the rate of increase of invasive P. australis populations (Bhattarai & Cronin, 2014), suggesting there may be no corresponding variation in invasion success of P. australis.…”

Section: Non-parallel Latitudinal Gradients In L Rufitarsis Herbivorysupporting

confidence: 93%

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Biogeography of a plant invasion: drivers of latitudinal variation in enemy release

Allen

Meyerson

Cummings

et al. 2016

Global Ecol. Biogeogr.

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Aim The relationship between herbivory and latitude may differ between native and invasive plant taxa, which can generate biogeographical heterogeneity in the strength of enemy release. Our aim was to compare latitudinal gradients in herbivory between native and invasive plants and investigate whether gradients are driven by local adaptation or phenotypic plasticity. Location North America. Methods Using sympatric native and invasive lineages of the wetland grass Phragmites australis and the specialist gall‐fly Lipara rufitarsis, we conducted a field survey to examine whether the relationship between herbivory (the proportion of stems galled) and latitude was parallel between lineages. In a subsequent common garden experiment, we assessed whether latitudinal gradients in herbivory were genetically based or driven by phenotypic plasticity. Results In the field, L. rufitarsis herbivory on the native P. australis lineage increased from 27% of stems galled in southern populations (36.5°) to 37% in northern populations (43.6°), whereas there was no relationship for the invasive lineage. Similar relationships were evident in the common garden experiment, indicating a genetic basis to latitudinal variation in herbivory. Moreover, the invasive lineage suffered five times less herbivory than the native lineage on average, supporting the enemy release hypothesis. However, a genetic basis to this pattern was absent in the common garden experiment, suggesting that local environmental conditions were responsible for the enemy release observed in nature. Specifically, stem height, diameter and density during the L. rufitarsis oviposition period appeared to be important drivers of herbivory. Main conclusions Non‐parallel gradients in herbivory may help explain the equivocal results of other studies that examine enemy release and biotic resistance at local scales, and can be an important mechanism promoting biogeographical variation in invasion success. We suggest that these latitudinal patterns in herbivory and other species interactions are likely to be a common phenomenon across a range of invaded systems.

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Section: Discussionsupporting

confidence: 91%

Section: Non-parallel Latitudinal Gradients In L Rufitarsis Herbivorysupporting

confidence: 93%

Biogeography of a plant invasion: drivers of latitudinal variation in enemy release

Allen

Meyerson

Cummings

et al. 2016

Global Ecol. Biogeogr.

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“…In this study the height (cm) of X. strumarium was increased significantly at 41°N and the results were in accordance to the researchers who reported that the stem diameter of the toxic weed increased at north latitudinal patterns (42°N to 32°N) which was consistent to our findings that related to natural enemy abundance at northern populations [59]. These results are in accordance to the scientists who reported that slight variation in temperature resulting in a maximum difference in biological control agents than latitudinal pattern, however, in this situation rainfall and population density were less important than other ecological factors [60].…”

Section: Discussionsupporting

confidence: 93%

Phytochemical screening, GC-MS profiling of invasive cocklebur (Xanthium strumarium)-insect-pathogen interaction and simulated volatile chemical signaling at Northeast China

Iqbal

Feng

2020

Preprint

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Invasive cocklebur (Xanthium strumarium) is characterized by its excellent genetic 10 and ecological plasticity, ability to spread in agriculture crops. There is a dire need to locate 11 useful management strategies to control this invasive weed at diversified latitudinal gradients. In 12 ecology, there is weak evidence that the damage caused by the natural enemy varies with 13 latitudes. Therefore, we investigated this evidence with the help of transect quadratic ecological 14 sampling method which was conducted randomly at ten different sites of Northeast China. 15Overall, significantly high infestation of gall-forming insect (Epiblema strenuana) was observed 16 on Xanthium leaves (21.16%) at 41.51279°N, followed by 40.2241°N latitude. Similarly, there 17 was a significantly high abundance of Epiblema infestation (7.3) with high damage (3.88%) at 18 41.51279°N and 40.12749°N latitude. Likewise, the fungal abundance (5.6) of rust i.e. Puccinia 19 xanthii (presenting 16.23% attack) was dominated significantly at 41.51279°N. Hence, high 20 pathogen infection rate (8.97%) was detected at 40.2241 o N. On the other hand growth 21 parameters, i.e. plant height (cm), stem diameter (mm) vary with latitude and longitudinal trends. 22 In our experiment, of plant natural enemy interaction provides the evidence-based indication the 23 Epiblema abundance, was diversified at 41.51279 o N, and P. xanthii infection was most frequent 24 at 40.22411°N latitudes. This study provides an evidence-based indication that natural enemy 25 pressure varies with latitude, however this investigations gave valuable information that insect 26 and phytopathological fungus having biological control potential against Xanthium strumarium 27 invasive weed. Secondly, phytochemical qualitative and chemical signaling through Gas 28 Chromatography-mass spectrometry (GC-MS) executed the presence of flavonoids, phenols, 29 saponins, alkaloids, terpenoids, nitrogen (N), sulpher (S), silicon (Si) containing compounds in 30 both treated and controlled leaves that defend against Puccinia xanthii. Fascinatingly, all X. 31 strumarium populations collected from different latitudes possess similar compositions. In 32 interaction mechanism, plant known to omit volatile organic compounds in response to attack of 33 natural herbivores. The leave chemical profiling suggested that the influence of fungus attack on 34 invasive weed brought different changes in chemical infrastructure of leave and these chemicals 35 also play a vital role in the food web. After attack of these biological control agents, plants 36 exhibits passionate compound reprogramming within the leaf naturally that act upon in defense 37 systems. 38 Author summary 39 • The study was conducted to observe the environmental impact on the trend of insect, 40 invasive weed and pathogens. 41 • There was a significant dominance of gall-forming insect on invasive Xanthium weed at 42 all locations. 43 • Puccinia xanthii infected more than 16% plantation 44 • Plant growth had significant variation at variou...

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“…Phragmites australis density is positively associated with the percent of surrounding developed land (Hughes et al, 2016), and in newly invaded areas the introduced lineage was found most frequently in areas with urban disturbance near wetlands . In Chesapeake Bay, the prevalence of agriculture was a strong predictor of P. australis invasion at regional and local scales (Sciance et al, 2016).…”

Section: Response To Disturbancementioning

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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Biogeographic gradients in ecosystem processes of the invasive ecosystem engineer Phragmites australis

Cited by 14 publications

References 61 publications

Biogeography of a plant invasion: drivers of latitudinal variation in enemy release

Biogeography of a plant invasion: drivers of latitudinal variation in enemy release

Phytochemical screening, GC-MS profiling of invasive cocklebur (Xanthium strumarium)-insect-pathogen interaction and simulated volatile chemical signaling at Northeast China

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

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