The Incidence of Vesicular-Arbuscular Mycorrhizae in the Dune-Colonizing Vegetation along the Eastern Lake Michigan Shoreline
MetadataShow full item record
The most prominent dune-colonizing plant species indigenous to the eastern Lake Michigan shoreline were examined for evidence of vesicular-arbuscular mycorrhizal colonization. The seven species sampled Ammophila breviligulata. Calamovilfa longlfolia. Lathyrus marltimus. Cakile edentual. Artimisia caudata. Populus deltoides, and Prunus pumila), were selected as subjects for this study because they are known to be successful colonizers of lacustrine dune systems in the Great Lakes region. and because it has been suggested that VAM fungi are partially responsible for the success of several dune-colonizing species indigenous to the marine environment. The goal of the present study was to determine whether or not these lacustrine dune-colonizers are mycorrhizal, and. if so, to determine whether their mycorrhizal condition is related to their ecological success in the dune environment. The majority of the samples were highly mycorrhizal, with respect to both frequency and intensity of infection. This indicates that the VA mycorrhizal symbiosis is an important component of the dune ecosystem. However, the prominence of consistently non-mycorrhizal species in the dune ecosystem precludes the construction of ecological models of the VA mycorrhizal symbiosis in dune-colonizing plants, based on this data alone.