Jumpponen, A., Trappe, J.M., Mattson, K.G., and Cázares, E. Chronosequence of vascular plants and fungi on a retreating glacier forefront. Unpublished.

Succession is among the most important ecological concepts. Glacier forefronts provide a unique system for studying primary succession of plants and fungi. In this study, we gathered comprehensive data on fungal fruiting on a glacier forefront over a period of nine years and 16 expeditions. Data on chronosequence of vascular plants was also collected to provide data on the communities allowing fruiting of the heterotrophic fungi. Based on frequencies of occurrence, pattern of change in plant communities from an open, non-vegetated community to an ericaceous meadow community was similar to the descriptive model proposed earlier. However, coniferous component, visually dominant in later states, did not appear important. The fruiting of saprophytic fungi took place soon after first clusters of plants had established. As many of the saprobes are fruiting on the nonvegetated, moist pond and stream banks, we hypothesize that these saprophytes may survive on residual organic debris (spores, pollen and algae) from surrounding plant communities accumulating in the water and the pond and stream bank habitats. The mycorrhizal fungi established and reproduced as soon as the first host plants were present. The diversification of the mycorrhizal fungal community resulted likey from increased number of host plants as well as changing physical attributes rather than the increasing age of the host plants.
 
 



The forefront of the receding glacier is a fabulous study system to follow substrate related patterns in fungal communities.

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