Salt tolerance underlies the cryptic invasion of North American salt marshes by an introduced haplotype of the common reed Phragmites australis (Poaceae)

Edward A. Vasquez, Edward P. Glenn, J. Jed Brown, Glenn R. Guntenspergen, Stephen G. Nelson

Research output: Contribution to journalArticlepeer-review

115 Scopus citations

Abstract

A distinct, non-native haplotype of the common reed Phragmites australis has become invasive in Atlantic coastal Spartina marshes. We compared the salt tolerance and other growth characteristics of the invasive M haplotype with 2 native haplotypes (F and AC) in greenhouse experiments. The M haplotype retained 50% of its growth potential up to 0.4 M NaCl, whereas the F and AC haplotypes did not grow above 0.1 M NaCl. The M haplotype produced more shoots per gram of rhizome tissue and had higher relative growth rates than the native haplotypes on both freshwater and saline water treatments. The M haplotype also differed from the native haplotypes in shoot water content and the biometrics of shoots and rhizomes. The results offer an explanation for how the M haplotype is able to spread in coastal salt marshes and support the conclusion of DNA analyses that the M haplotype is a distinct ecotype of P. australis.

Original languageEnglish (US)
Pages (from-to)1-8
Number of pages8
JournalMarine Ecology Progress Series
Volume298
DOIs
StatePublished - Aug 15 2005

Keywords

  • Invasive species
  • Phragmites australis
  • Salinity tolerance
  • Salt marshes

Fingerprint Dive into the research topics of 'Salt tolerance underlies the cryptic invasion of North American salt marshes by an introduced haplotype of the common reed Phragmites australis (Poaceae)'. Together they form a unique fingerprint.

Cite this