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We examined the genetic population structure of Spartina alterniflora in Jamaica Bay, Queens, NY and the surrounding area in order to assist the ongoing restoration of Jamaica Bay. AMOVA (Analysis of Molecular Variance) indicated that population differences accounted for 15% of molecular variance (ΦPT = 0.15, p = 0.001). Observed heterozygosity (Ho) ranged from 0.61 to 0.73 among populations. A Mantel...
Efforts to manage or prevent Phragmites australis invasion in salt and brackish marshes are complicated by the lack of a general causal role for specific human activities. The pattern of invasion within a marsh differs among sites, and each may have different causal histories. A review of the literature finds three establishment/invasion patterns: (1) from stands established on ditch- or creek-bank...
Finding environmental constraints on the establishment in salt marshes of Phragmites australis may help elucidate human activities that facilitated its invasion. We tested the effects of rhizome burial, salinity, anoxia, and sulfides on emergence, survival, growth, biomass production, and spread. In greenhouse and field experiments, rhizome burial facilitated initial emergence in well-drained soils...
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