e-journal

Moving from a regional to a continental perspective of Phragmites australis invasion in North America

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Abstract.
Aims:
We use a regional comparison of Phragmites australis (common reed) subsp. americanus,
P. australis subsp. berlandieri and introduced P. australis (possibly five sublineages) in the
Chesapeake Bay, the St Lawrence River, Utah and the Gulf Coast to inform a North American
perspective on P. australis invasion patterns, drivers, impacts and research needs.

Findings and research needs:
Our regional assessments reveal substantial diversity within and between the three main lineages of P. australis in terms of mode of reproduction and the types of environment
occupied. For introduced P. australis, the timing of introduction also differed between the
regions. Nevertheless, a common finding in these regions reinforces the notion that introduced
P. australis is opportunistic and thrives in disturbed habitats. Thus, we expect to see substantial
expansion of introduced P. australis with increasing anthropogenic disturbances in each of these
regions. Although there have been some studies documenting the negative impacts of introduced
P. australis, it also plays a beneficial role in some regions, and in some cases, the purported
negative impacts are unproven. There is also a broader need to clarify the genetic and ecological
relationships between the different introduced sublineages observed in North America, and
their relative competitive ability and potential for admixture. This may be done through regional
studies that use similar methodologies and share results to uncover common patterns and processes.
To our knowledge, such studies have not been performed on P. australis in spite of the
broad attention given to this species. Such research could advance theoretical knowledge on
biological invasion by helping to determine the extent to which the patterns observed can be
generalized or are sublineage specific or region specific.

Synthesis:
Given what appears to be sometimes idiosyncratic invasion patterns when interpreted in isolation
in the regions that we analysed, it may be time to consider initiatives on a continental
(if not intercontinental) scale to tackle unresolved issues about P. australis.

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Informasi Detail

Judul Seri

AoB PLANTS

No. Panggil

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Penerbit

Oxford : Oxford University Press on behalf of the Annals of Botany Company., 2012

Deskripsi Fisik

AoB PLANTS 2012: pls040; doi:10.1093/aobpla/pls040

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

2012: pls040

Subjek

EKOLOGI TANAMAN

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

Versi lain/terkait

Lampiran Berkas

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