Tracing the origin of Gulf Coast <i>Phragmites</i> (Poaceae): A story of long‐distance dispersal and hybridization

Lambertini, Carla; Mendelssohn, Irving A.; Hellström, Magnus; Olesen, Birgit; Riis, Tenna; Sorrell, Brian K.; Brix, Hans

doi:10.3732/ajb.1100396

Cited by 121 publications

(227 citation statements)

References 44 publications

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“…Introduced European genotypes have long been considered invasive with widespread detrimental impacts (Marks et al 1994), while populations of native genotypes are lost (Saltonstall 2002) and are considered of conservation concern in some eastern states. The status of the Gulf Coast lineage as native or introduced remains unresolved (Lambertini et al 2012;Colin and Eguiarte 2016). Recently the existence of hybrids between European and North American lineages, long suspected due to common garden evidence (Meyerson et al 2008), has been confirmed in wetlands in New York and Nevada (Saltonstall et al 2014.…”

Section: Study Speciesmentioning

confidence: 99%

Management of invasive Phragmites australis in the Adirondacks: a cautionary tale about prospects of eradication

et al. 2017

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Invasive plant management (largely mechanical and chemical) consumes an ever-increasing portion of budgets for land management organizations, but metrics of success, other than extent of areas treated or resources expended is rarely available. Here we assess success of managing 346 populations of invasive Phragmites australis (range 0.36-4134 m 2 ; cover 37-75%) in the Adirondack Park in upstate New York, USA. We began by treating 18 patches in 2010 using herbicide; gradually adding patches treated annually or intermittently for a total of 334 by the end of the project period. We monitored each population annually and if P. australis was present mapped its spatial extent and estimated cover. We considered P. australis eradicated when live stems were absent from a site for at least three consecutive years. Our treatments reduced size and cover of P. australis populations and eradication was achieved at 104 of 294 sites. However, probability of eradicating P. australis over a 7-year project timeframe was 0.83 for the smallest patches (0.36 m 2 ), whereas at medium (45 m 2 ) and large patches ([3000 m 2 ) probability of eradication decreased to 0.26 and 0.02, respectively. Our results question efficacy of managing large P. australis populations with the goal of eradication. We urge conservation organizations to clearly articulate management objectives beyond short-term suppression of target plants and to promote accountability by providing quantitative measurements of outcomes.

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Section: Study Speciesmentioning

confidence: 99%

Management of invasive Phragmites australis in the Adirondacks: a cautionary tale about prospects of eradication

et al. 2017

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“…This assumption is also supported by the little genetic and epigenetic differentiation between the DELTA and MED groups. Genetic diversity seems to be a key factor explaining its broad ecological adaptation (Kettenring, McCormick, Baron, & Whigham, 2011; Lambertini, Mendelssohn et al., 2012). Compared with LAND group, the DELTA group can adapt to wetter and slightly more saline habitats.…”

Section: Discussionmentioning

confidence: 99%

“…One, known as Haplotype M (hereafter “INT”), has spread dramatically across much of the North America, especially in the Great Lakes regions (Saltonstall, 2002). The other, represented by Haplotype M1 and I (hereafter “DELTA” and “LAND”), was native to Mediterranean region, sub‐Saharan Africa, and the Middle East and has expanded along the Gulf Coast of the United States and in the northwest of South America (Lambertini, Sorrell, Riis, Olesen, & Brix, 2012; Lambertini, Mendelssohn et al., 2012). The introduced population of P. australis had a higher level of genetic diversity and heritable phenotypic variation in its invasive range than in parts of its native range, as multiple and uncontrolled immigration events may have occurred from different European regions to North American (Lavergne & Molofsky, 2007).…”

Section: Introductionmentioning

confidence: 99%

Genetic and epigenetic changes during the invasion of a cosmopolitan species (Phragmites australis)

Liu

Cuiping

Liu

et al. 2018

Ecology and Evolution

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While many introduced invasive species can increase genetic diversity through multiple introductions and/or hybridization to colonize successfully in new environments, others with low genetic diversity have to persist by alternative mechanisms such as epigenetic variation. Given that Phragmites australis is a cosmopolitan reed growing in a wide range of habitats and its invasion history, especially in North America, has been relatively well studied, it provides an ideal system for studying the role and relationship of genetic and epigenetic variation in biological invasions. We used amplified fragment length polymorphism (AFLP) and methylation‐sensitive (MS) AFLP methods to evaluate genetic and epigenetic diversity and structure in groups of the common reed across its range in the world. Evidence from analysis of molecular variance (AMOVA) based on AFLP and MS‐AFLP data supported the previous conclusion that the invasive introduced populations of P. australis in North America were from European and Mediterranean regions. In the Gulf Coast region, the introduced group harbored a high level of genetic variation relative to originating group from its native location, and it showed epigenetic diversity equal to that of the native group, if not higher, while the introduced group held lower genetic diversity than the native. In the Great Lakes region, the native group displayed very low genetic and epigenetic variation, and the introduced one showed slightly lower genetic and epigenetic diversity than the original one. Unexpectedly, AMOVA and principal component analysis did not demonstrate any epigenetic convergence between native and introduced groups before genetic convergence. Our results suggested that intertwined changes in genetic and epigenetic variation were involved in the invasion success in North America. Although our study did not provide strong evidence proving the importance of epigenetic variation prior to genetic, it implied the similar role of stable epigenetic diversity to genetic diversity in the adaptation of P. australis to local environment.

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“…For grasses, the best-studied example of hybridization is in Spartina spp., which has occurred in both San Francisco Bay and in the United Kingdom (Ayres et al 2008;Ainouche et al 2009). In Florida, ancient hybridization may have played a role in the spread of Phragmites Adans., as Lambertini et al (2012) recently demonstrated that the dominant population in the Gulf Coast, including Florida, is very likely a hybrid of the European P. australis (Cav.) Trin.…”

Section: Why Are African Forage Grasses Prone To Invasiveness?mentioning

confidence: 99%

Understanding specifics in generalist diets of carnivorans by analyzing stable carbon isotope values in Pleistocene mammals of Florida

Feranec¹,

DeSantis²

2014

Paleobiology

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Within ancient ecosystems, it is generally difficult to determine the specific diets of species from higher trophic levels, which in turn hinders our understanding of trophic relationships and energy flow through these systems. To better understand the ecology of taxa at higher trophic levels, we used analysis of tooth enamel stable carbon isotope values to infer the dietary preferences of Canis edwardii and Smilodon gracilis from the Leisey Shell Pit 1A (LSP 1A) and Inglis 1A, two Pleistocene localities in Florida. The goals of the analyses were to (1) determine whether these carnivorans specialized in particular prey types or maintained a generalist diet; (2) ascertain whether carbon isotope values support what was previously suggested about the ecology of these species; and (3) establish what ecological details of ancient food webs can be discovered by carbon isotope analyses at higher trophic levels. Results show that the sampled carnivoran carbon isotope values are distributed among suspected prey isotope values, suggesting that varied prey were taken at the study localities. Prey compositions were modeled for each carnivoran species by using Stable Isotope Analysis in R (SIAR). The modeled diets indicate that each studied carnivoran had a generalist diet; however, there are differences in how these taxa achieved dietary generalization. At the glacial Inglis 1A locality, sampled individuals of C. edwardii and S. gracilis show similar isotope values and modeled dietary prey proportions, although both carnivorans do show a preference for grazing prey species. The similar isotopic values, and calculated prey proportions, observed between these species may imply greater interspecific competition for food. At the interglacial LSP 1A locality, C. edwardii shows values similar to those observed at Inglis 1A. In contrast, the data for S. gracilis shows a preference for consuming browsing prey species. Further, its restricted range of carbon isotope values suggests that S. gracilis may have concentrated its feeding within a particular habitat. Examination of stable carbon isotope values among species at higher trophic levels reveals that some intricacies of ancient food webs can be discerned.

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Tracing the origin of Gulf Coast Phragmites (Poaceae): A story of long‐distance dispersal and hybridization

Cited by 121 publications

References 44 publications

Management of invasive Phragmites australis in the Adirondacks: a cautionary tale about prospects of eradication

Management of invasive Phragmites australis in the Adirondacks: a cautionary tale about prospects of eradication

Genetic and epigenetic changes during the invasion of a cosmopolitan species (Phragmites australis)

Understanding specifics in generalist diets of carnivorans by analyzing stable carbon isotope values in Pleistocene mammals of Florida

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