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Reestablishment of Endogonaceae on Mount St. Helens: Survival of Residuals

Allen, Michael F. ; MacMahon, James A. ; Andersen, Douglas C.

Mycologia, 1984-11, Vol.76 (6), p.1031 [Periódico revisado por pares]

United States

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Título:
Reestablishment of Endogonaceae on Mount St. Helens: Survival of Residuals
Autor: Allen, Michael F. ; MacMahon, James A. ; Andersen, Douglas C.
Assuntos: 510100 - Environment, Terrestrial- Basic Studies- (-1989) ; 580202 - Geophysics- Volcanology- (1980-1989) ; BIOLOGICAL PATHWAYS ; CASCADE MOUNTAINS ; DATA ; ECOLOGICAL SUCCESSION ; ECOSYSTEMS ; ENVIRONMENTAL EFFECTS ; ENVIRONMENTAL SCIENCES ; ERUPTION ; EXPERIMENTAL DATA ; FEDERAL REGION X ; FUNGI ; GEOSCIENCES ; INFORMATION ; MOUNTAINS ; MT ST HELENS ; MYCORRHIZAS ; NORTH AMERICA ; NUMERICAL DATA ; PLANTS ; POPULATION DYNAMICS ; TERRESTRIAL ECOSYSTEMS ; USA ; VOLCANOES ; WASHINGTON
É parte de: Mycologia, 1984-11, Vol.76 (6), p.1031
Descrição: The 18 May 1980 eruption of Mount St. Helens resulted in the burial of relatively well developed soils under variable depths of sterile tephra and ash. During summer 1982, we examined a series of sites and estimated the numbers of spores of Endogonaceae that had been transported from the buried soil to the new ground surface by either abiotic or biotic vectors. There was no difference between spore counts of Endogone spp. or Glomus spp. in the buried soils of forests and clear-cuts; spores were rare in the tephra at any site. In areas featuring less than or equal to 50 cm of tephra, spores were transported to the surface by gophers (in previous clear-cut areas) and by ants (in previous forest and clear-cut habitats). In the Pumice Plain, an area devoid of gophers and ants, erosion exposed spores to the surface. We found no evidence to suggest that endogonaceous fungi grow back up root systems from buried horizons. We hypothesize that small-scale perturbations (erosion, gopher and ant mounds) following the major volcanic disturbance may drive succession by exposing buried mycorrhizal and decomposer fungi. 26 references, 2 figures, 3 tables.
Editor: United States
Idioma: Inglês

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Reestablishment of Endogonaceae on Mount St. Helens: Survival of Residuals

Allen, Michael F. ; MacMahon, James A. ; Andersen, Douglas C.

United States

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