Fire in tropical dry forests: corticolous lichens as indicators of recent ecological changes in Thailand

Wolseley, P. A.; Aguirre-Hudson, Begoña

doi:10.1046/j.1365-2699.1997.00125.x

Cited by 33 publications

(24 citation statements)

References 7 publications

(1 reference statement)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Si el daño al liquen no es total, la porción del talo sobreviviente puede funcionar como colonizador de la nueva comunidad liquénica (Wolseley & Aguirre-Hudson 1997). Entonces, la estructura de la comunidad en el sistema disturbado va a depender de las variables asociadas directamente al disturbio (intensidad del fuego, dirección, frecuencia, localización, etc.)…”

Section: Resultsunclassified

“…En los arbustos de esta zona es importante destacar la ausencia de Physcia spp., siendo especies de ambientes xéricos (Wolseley & Aguirre-Hudson 1997) y la abundancia de Heterodermia spp. que presentan una marcada preferencia por zonas húmedas (Lücking et al 2008).…”

Section: Resultsunclassified

“…El fuego como disturbio en los sistemas forestales estudiados cambia la estructura del bosque generando bordes, dejando parches, modificando la diversidad, eliminando por completo el estrato arbóreo y el arbustivo (Verzino et al 2005). Estos cambios Wolseley & Aguirre Hudson (1997) quienes indican que este grupo tolera ambientes sombríos y húmedos.…”

Section: Discusión Y Conclusiónunclassified

See 2 more Smart Citations

Recuperación post-fuego de la comunidad de líquenes epífitos en la provincia de Córdoba, Argentina

et al. 2009

View full text Add to dashboard Cite

RESUMEN -(Recuperación post-fuego de la comunidad de líquenes epífitos en la provincia de Córdoba, Argentina). Los líquenes son reconocidos bioindicadores de la calidad del ambiente. Estudios de comunidades de líquenes en relación a los incendios forestales, han demostrado como responden al fuego por encima de las variables microambientales que modelan la comunidad en ausencia de este disturbio. El objetivo de la presente contribución es reconocer el efecto del fuego en la comunidad de líquenes del Bosque Serrano en Córdoba. Se seleccionaron dos zonas, una testigo y otra sometida a fuego en 1996. A través de un muestreo sistemático y estandarizado se relevó la presencia y cobertura de especies de líquenes en árboles y arbustos en las dos áreas estudiadas. Entre el área testigo y el incendiado la diversidad y cobertura de líquenes es similar pero varia su composición. Las especies en la zona incendiadas corresponden a líquenes heliófilos y adaptados a situaciones de estrés. El fuego como disturbio frecuente favorece la presencia de pocas especies con importantes coberturas que resistan las condiciones que el disturbio impone. Los incendios de alta intensidad y frecuencia dejan a la comunidad de líquenes sin posibilidades de desarrollo, disminuyendo la diversidad general y la calidad de los sistemas forestales en los que viven. Palabras clave: bosque, comunidad liquénica, disturbio, fuego.ABSTRACT -(Post-fire recovery of the epiphytic-lichen community in Cordoba province, Argentina). Lichens are recognized bioindicators of environmental quality. Studies of lichen communities in relation to forest fires have shown the response to fire over micro-environmental variables that shape the community in the absence of this disturbance. The aim of this contribution is to recognize the effect of fire on the lichen community of Sierra Chaco in Cordoba province. Two areas were selected, one without past fire and the other with fire in 1996. Coverage and presence of lichen species on trees and shrubs were recorded in the two areas using systematic, standardized sampling. Diversity and coverage of lichens is similar between the two areas but composition varies. The lichen species in the burned area are heliophilous and adapted to stress conditions. Fire as a frequent disturbance promotes the growth of few species with high coverage that are resistant to the conditions imposed by disturbance. High intensity and high frequency fires limit development opportunities for the lichen community thus diminishing overall diversity and quality of forest systems in which they live. Key words: disturbance, fire, forest, lichen community IntroducciónEn numerosos ecosistemas naturales el fuego es un factor recurrente que tiene alto impacto en el modelado del paisaje. Su efecto en los ecosistemas es considerable ya que modifica profunda y rápidamente los componentes estructurales del mismo. Este disturbio genera modificaciones en el seno de las comunidades vegetales que están fundamentalmente relacionadas a la resistencia de las distintas espe...

show abstract

Section: Resultsunclassified

Section: Discusión Y Conclusiónunclassified

See 1 more Smart Citation

Recuperación post-fuego de la comunidad de líquenes epífitos en la provincia de Córdoba, Argentina

et al. 2009

View full text Add to dashboard Cite

show abstract

“…Furthermore, fire intensity was lower on the controls compared to the harvested sites, as the control sites lacked easily flammable logging residues. Lower fire intensity and higher structural variety on the control sites could enhance lichen survival rates by increasing the number of unburned refugia, which have previously been found to reduce the mortality of bryophytes (Hylander and Johnson, 2010) and lichens (Wolseley and Aguirre-Hudson, 1997) during a fire.…”

Section: Impact Of Prescribed Burning On Epiphytic Lichensmentioning

confidence: 96%

Retention forestry and intensified biomass harvest: epiphytic lichen assemblages under opposing ecological effects in pine-dominated boreal forests

Hämäläinen¹

2016

Diss. For.

View full text Add to dashboard Cite

Intensive forestry has led to changes in the structure and function of boreal forests and to the endangerment of forest-dwelling species. Different management methods, such as retention forestry, have been developed to counter the negative biodiversity impacts, although forest use has intensified at the same time: for example, stumps and logging residues are commonly harvested for biofuel. This thesis examines the potential impacts of biofuel harvest, retention forestry and prescribed burning on epiphytic lichen assemblages in pine-dominated boreal forests. In addition, post-harvest dynamics of retention trees were studied to assess their capacity to support species diversity in the early successional forests. The study is based on a large, empirical dataset collected in eastern Finland from 24 study sites that were treated experimentally with a combination of retention harvest and prescribed burning, and, additionally, from 13 sites that represent different stages of forest succession.The results show that retention forestry has the potential to maintain pre-harvest legacies and support high lichen diversity on harvested sites: 85 lichen species, including Red-Listed species and dead wood specialists, were recorded on retained Scots pines (Pinus sylvestris L.) or their dead wood legacies 11 years post-harvest. However, the outcome of retention forestry is affected by post-harvest mortality rates and the fall patterns of the retained trees, which in turn differ depending on the retention tree volume, possible application of prescribed burning, and tree-level factors.Prescribed burning of harvested sites increased retention tree mortality rates and decreased epiphytic lichen richness 11-12 years post-fire. However, in combination with high retention volumes, burning created more diverse dead wood habitats than retention forestry alone. Thus, despite the initial negative effect, the application of prescribed burning on part of the harvested sites could eventually increase lichen diversity at the landscape scale.Scots pine stumps on harvested sites hosted 83 lichen species, and may be a valuable habitat resource for wood-dwelling lichens if dead wood volumes in the landscape are otherwise low. Therefore, large-scale stump harvest may decrease lichen diversity. Instead, fine woody debris was found to be a less valuable substrate for epiphytic lichens and could be harvested for biofuel without notable effects on lichen populations.This study shows that retention forestry can be used to enhance lichen species richness in managed forests, while stump harvest has the opposite effect by reducing lichens' habitats. Prescribed burning decreases lichen species richness at the stand scale but may enhance it at the landscape scale, provided that burning is avoided on the most valuable, lichen-rich stands.

show abstract

“…Other compounds may play a crucial role in protecting slow-growing crusts from invasive fungi or from other lichens throughout their long lives. In Thailand, where fire occurs frequently in dry and evergreen tropical monsoon forests, causing the death of lichens on the trunks of dipterocarps, this is followed by colonisation of the dead thallus surface by other lichens which were unable to establish on the pre-existing living thallus (Wolseley & Aguirre-Hudson 1997).…”

Section: Chemical Products: Function and Taxonomic Applicationmentioning

confidence: 99%

Adaptations of lichens to conditions in tropical forests of South-East Asia and their taxonomic implications

Wolseley¹,

Hawksworth²

2009

blum - j plant tax and plant geog

View full text Add to dashboard Cite

Lichens are fungi with a specialized nutritional mode involving algae, or cyanobacteria, or both. Classification is based on the fungal partner, and around 13 500 species are known. The association is ancient, and the first ascomycete fungi with fruit bodies may have been lichenized. Adaptations to tropical habitats include extensive utilization of trentepohlioid algae, the production of large multi-celled spores capable of forming numerous germ tubes, and water-repellant hydophobins coating internal cell walls. Many tropical groups lack modern monographs and numerous new species are discovered in detailed studies. Lichens merit more attention in the tropics as bioindicators of habitat disturbance.

show abstract

Fire in tropical dry forests: corticolous lichens as indicators of recent ecological changes in Thailand

Cited by 33 publications

References 7 publications

Recuperación post-fuego de la comunidad de líquenes epífitos en la provincia de Córdoba, Argentina

Recuperación post-fuego de la comunidad de líquenes epífitos en la provincia de Córdoba, Argentina

Retention forestry and intensified biomass harvest: epiphytic lichen assemblages under opposing ecological effects in pine-dominated boreal forests

Adaptations of lichens to conditions in tropical forests of South-East Asia and their taxonomic implications

Contact Info

Product

Resources

About