Numbers and viability of vesicular-arbuscular fungal propagules in field soil samples after wildfire

Vilariño, A.; Arines, J.

doi:10.1016/0038-0717(91)90048-o

Cited by 56 publications

(22 citation statements)

References 11 publications

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“…The general relationships discussed above have been documented by several studies that show a decline in the formation of both ectomycorrhizae (Harvey and others 1980b, Schoenberger and Perry 1982, Parke and others 1984 and vesicular arbuscular mycorrhizae others 1988, Vilariño andArines 1991) within the first growing season following fire. Mycorrhizae were not per se eliminated by fire in these studies.…”

Section: Soil Microorganismsmentioning

confidence: 64%

Wildland fire in ecosystems: effects of fire on soils and water

Neary¹,

Ryan²,

DeBano³

2005

450

369

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_____________________________________ Neary, Daniel G.; Ryan, Kevin C.; DeBano, Leonard F., eds. 2005. (revised 2008This state-of-knowledge review about the effects of fire on soils and water can assist land and fire managers with information on the physical, chemical, and biological effects of fire needed to successfully conduct ecosystem management, and effectively inform others about the role and impacts of wildland fire. Chapter topics include the soil resource, soil physical properties and fire, soil chemistry effects, soil biology responses, the hydrologic cycle and water resources, water quality, aquatic biology, fire effects on wetland and riparian systems, fire effects models, and watershed rehabilitation.

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Section: Soil Microorganismsmentioning

confidence: 64%

Wildland fire in ecosystems: effects of fire on soils and water

Neary¹,

Ryan²,

DeBano³

2005

450

369

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“…Therefore, the high number of spores in areas of anthropic impact may also be a response of AMF to the physiological impact that the fire caused to the trees, as a reaction to a stress situation and to guarantee higher survival rates. Although several authors (Vilariño & Arines, 1991;Bellgard et al, 1994;Rashid et al, 1997) found reduction in root colonization and number of spores due to the action of fire, this did not occur in the Araucaria areas.…”

Section: Resultsmentioning

confidence: 99%

Spore density and root colonization by arbuscular mycorrhizal fungi in preserved or disturbed Araucaria angustifolia (Bert.) O. Ktze. ecosystems

Moreira

Baretta²,

Tsai³

et al. 2006

Sci. agric. (Piracicaba, Braz.)

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Araucaria angustifolia (Bert.) O. Ktze., a native forest tree from Brazil, is under extinction risk. This tree depends on arbuscular mycorrhizal fungi for growth and development, especially in tropical low-P soils but, despite being a conifer, Araucaria does not form ectomycorrhiza, but only the arbuscular endomycorrhiza. This study aimed at surveying data on the spore density and root colonization (CR) by arbuscular mycorrhizal fungi (AMF) in Araucaria angustifolia forest ecosystems, in order to discriminate natural, implemented, and anthropic action-impacted ecosystems, by means of Canonical Discriminant Analysis (CDA). Three ecosystems representative of the Campos do Jordão (SP, Brazil) region were selected: 1. a native forest (FN); 2. a replanted Araucaria forest (R); and 3. a replanted Araucaria forest, submitted to accidental fire (RF). Rhizosphere soil and roots were sampled in May and October, 2002, for root colonization, AMF identification, and spores counts. Root percent colonization rates at first collection date were relatively low and did not differ amongst ecosystems. At the second period, FN presented higher colonization than the other two areas, with much higher figures than during the first period, for all areas. Spore density was lower in FN than in the other areas. A total of 26 AMF species were identified. The percent root colonization and spore numbers were inversely related to each other in all ecosystems. CDA indicated that there is spatial distinction among the three ecosystems in regard to the evaluated parameters. Key words: Brazil pine, biodiversity, species richness, reforestation DENSIDADE DE ESPOROS E COLONIZAÇÃO RADICULAR POR FUNGOS MICORRÍZICOS ARBUSCULARES EM ECOSSISTEMAS DE Araucaria angustifolia (Bert.) O. Ktze. PRESERVADOS E IMPACTADOSRESUMO: A Araucaria angustifolia (Bert.) O. Ktze. é uma espécie florestal nativa do Brasil e encontrase ameaçada de extinção. É altamente dependente de fungos micorrízicos arbusculares para seu desenvolvimento, principalmente em solos com baixos teores de fósforo. Embora sendo uma conífera, esta árvore não forma ectomicorriza, mas sim a endomicorriza arbuscular. O presente estudo teve como objetivo levantar dados sobre a densidade de esporos e a colonização radicular de fungos micorrízicos arbusculares (FMAs) em ecossistemas florestais de Araucaria angustifolia, visando discriminar os ecossistemas natural, implantado e impactado pela ação antrópica, através da Análise Canônica Discriminante (ACD). Foram selecionados três ecossistemas representativos da região de Campos do Jordão (SP): 1. floresta nativa (FN); 2. floresta replantada de araucária (R); e 3. floresta replantada de araucária, submetida a uma queima acidental (RF

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“…In soils under Pinus, Torres and Honrubia (1997) showed that fire causes a particularly marked decrease in basidiomycetes and a selective enrichment of species typically carbonicolous among ascomycetes. The fragile symbiosis between vascular plants and mycorrhizae generally suffers under heat (Vilarin˜o and Arines 1991). In burnt soils under P. edulis/J.…”

Section: Microorganismsmentioning

confidence: 99%

Effects of fire on properties of forest soils: a review

2005

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Many physical, chemical, mineralogical, and biological soil properties can be affected by forest fires. The effects are chiefly a result of burn severity, which consists of peak temperatures and duration of the fire. Climate, vegetation, and topography of the burnt area control the resilience of the soil system; some fire-induced changes can even be permanent. Low to moderate severity fires, such as most of those prescribed in forest management, promote renovation of the dominant vegetation through elimination of undesired species and transient increase of pH and available nutrients. No irreversible ecosystem change occurs, but the enhancement of hydrophobicity can render the soil less able to soak up water and more prone to erosion. Severe fires, such as wildfires, generally have several negative effects on soil. They cause significant removal of organic matter, deterioration of both structure and porosity, considerable loss of nutrients through volatilisation, ash entrapment in smoke columns, leaching and erosion, and marked alteration of both quantity and specific composition of microbial and soil-dwelling invertebrate communities. However, despite common perceptions, if plants succeed in promptly recolonising the burnt area, the pre-fire level of most properties can be recovered and even enhanced. This work is a review of the up-to-date literature dealing with changes imposed by fires on properties of forest soils. Ecological implications of these changes are described.

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Numbers and viability of vesicular-arbuscular fungal propagules in field soil samples after wildfire

Cited by 56 publications

References 11 publications

Wildland fire in ecosystems: effects of fire on soils and water

Wildland fire in ecosystems: effects of fire on soils and water

Spore density and root colonization by arbuscular mycorrhizal fungi in preserved or disturbed Araucaria angustifolia (Bert.) O. Ktze. ecosystems

Effects of fire on properties of forest soils: a review

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