CAMBIOS EN LA COMPOSICIÓN DE LÍQUENES EPÍFITOS RELACIONADOS CON LA CALIDAD DEL AIRE EN LA CIUDAD DE LOJA (Ecuador).

Ochoa-Jiménez, Diego; Cueva-Agila, Anabel; Prieto, María; Aragón, Gregorio; Benítez, Ángel

doi:10.15446/caldasia.v37n2.53867

Cited by 15 publications

(24 citation statements)

References 19 publications

(11 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The climate is humid tropical with a mean annual temperature between 7-20 °C, and annual rainfall between 800-2500 mm [38]. Since the 1960s, these native forests have been transformed into agricultural and urbanized land [31,36,37]. In this study, we distinguished four different land uses, i.e., forest, a combination of forest and pasture, pasture, and urban land use, where we established 12 sampling sites located in riparian margins influenced by those land uses mentioned before.…”

Section: Study Areamentioning

confidence: 99%

“…As a general pattern, microclimatic variables (e.g., light, humidity, and temperature) that change in response to ecosystem transformation have been considered as constraining factors over the taxonomic and functional diversity of epiphytic lichens [21,25]. Therefore, several studies have used both taxonomic and functional diversity (e.g., richness of each functional trait) as indicators of landuse change [20,22,26,27], forest disturbance [14,21,28], global warming [29] and air quality [19,[30][31][32].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Lichen Responses to Disturbance: Clues for Biomonitoring Land-use Effects on Riparian Andean Ecosystems

et al. 2019

View full text Add to dashboard Cite

The transformation of natural ecosystems due to anthropogenic land use is considered one of the main causes of biodiversity loss. Lichens, due to their poikilohydric nature, are very sensitive to natural and anthropogenic disturbances. Therefore, lichen communities have been widely used as bioindicators of climatic and environmental changes. In this study, we evaluated how the species richness and community composition of epiphytic lichens respond to land-use intensity in riparian ecosystems of the Andes in southern Ecuador. Additionally, we evaluate how the richness of six functional traits (photobiont type, growth form, and reproductive strategy) changed across the different land-use intensity. We selected 10 trees in twelve sites for a total de 120 trees, equally divided into four riparian land-use intensities (forest, forest-pasture, pasture and urban). We recorded a total of 140 lichen species. Species richness was highest in the forest sites and decreased towards more anthropogenic land uses. Lichen community composition responded to land-use intensity, and was explained by microclimate variables (e.g., precipitation, percentage forested area) and distance to the forest. Richness of functional traits of lichens also differed significantly among the four land-use intensity and decreased from forests to urban land-use. Taxonomic diversity and functional traits can be effectively applied as bioindicators to assess and monitor the effects of land-use changes in the riparian ecosystems of tropical montane regions.

show abstract

Section: Study Areamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Lichen Responses to Disturbance: Clues for Biomonitoring Land-use Effects on Riparian Andean Ecosystems

et al. 2019

View full text Add to dashboard Cite

show abstract

“…En términos generales, el conocimiento de la diversidad de los líquenes epífitos proporciona evidencia sustantiva para la conservación a escala de paisaje (Li, et al, 2013;Estrabou, et al, 2014). Por su parte, Physciaceae y Arthoniaceae, las familias con mayor abundancia y diversidad de especies en el bosque, poseen una amplia distribución geográfica y alta tolerancia frente a las perturbaciones (Soto & Bolaños, 2010;Ochoa, et al, 2015), y colonizan en una amplia variedad de formaciones vegetales en el Trópico (Herrera, et al, 2014) Figura 5. Análisis de componentes principales de la relación entre variables microambientales y especies de líquenes la familia Parmeliaceae hace parte de la diversidad liquénica del bosque y se ha reportado en un amplio rango de hábitats con abundantes géneros y especies (Leavitt, et al, 2015) en el Neotrópico (Rincón, et al, 2011;Rosabal, et al, 2012a), especialmente en las formaciones vegetales andinas y subandinas (Aguirre, 2008).…”

Section: Resultsunclassified

Diversidad, especificidad de forófito y preferencias microambientales de líquenes cortícolas de un bosque subandino en la región Centro de Colombia

Zárate-Arias

Moreno-Palacios

Torres-Benítez

2019

Rev. Acad. Colomb. Cienc. Ex. Fis. Nat.

View full text Add to dashboard Cite

El objetivo del estudio fue contribuir al conocimiento de la composición y la diversidad, la especificidad de forófito y las preferencias microambientales de líquenes cortícolas de un bosque subandino en la región Centro de Colombia (Ibagué, Tolima). Se seleccionaron 25 individuos de cinco especies arbóreas; se estimó el porcentaje de cobertura de cada especie de liquen; se determinaron los parámetros del micrositio (pH de la corteza y diámetro a la altura del pecho, DAP) y del microclima (temperatura, humedad y radiación); se calculó la riqueza y la diversidad alfa y se efectuaron análisis multivariados para establecer las relaciones de forófito y líquen y de liquen y condición ambiental. Se registraron 21 especies, agrupadas en ocho familias y 14 géneros; la familia con mayor cobertura fue Arthoniaceae y la de mayor riqueza, Physciaceae; la especie más abundante fue Bacidia spp. El forófito Trichilia pallida presentó la riqueza y la diversidad más altas, en tanto que Cecropia angustifolia fue la especie de liquen más dominante. Las especies de líquenes presentaron preferencia por un solo forófito, excepto Leptogium diaphanum, la cual se registró en dos forófitos. Los parámetros de pH, intensidad lumínica, temperatura y DAP se correlacionaron positivamente con el establecimiento de los líquenes, los cuales registraron una diversidad significativa con el beneficio que ello conlleva para la conservación y el estudio de estos ecosistemas estratégicos de la región andina colombiana.

show abstract

“…In Ecuador, only one active biomonitoring study has been conducted using mosses as indicators of air pollution in the city of Quito [ 35 ], where the authors found the presence of lead and cadmium related to vehicular traffic, but the identification of the species used was not realized. On the other hand, air quality monitoring studies have been carried out in the city of Loja using lichens and bromeliads [ 36 , 37 ]. These studies have shown that urban areas have lower species diversity and a higher accumulation of metals compared to control zones.…”

Section: Introductionmentioning

confidence: 99%

“…The present study aims to determine the air quality of the city of Loja by transplanting three species of mosses ( Rhacocarpus purpurascens , Sphagnum sp. and Thuidium delicatulum ) due to the fact that urban areas of the city of Loja, Ecuador have high levels of air pollution (e.g., metals) related to vehicular traffic [ 36 , 37 ]. We hypothesized that increased urbanization and vehicular traffic towards the center of the city will result in increased bioaccumulation of heavy metals in transplanted mosses.…”

Section: Introductionmentioning

confidence: 99%

Monitoring Air Quality with Transplanted Bryophytes in a Neotropical Andean City

Benítez

Armijos

Calva

2021

Life

View full text Add to dashboard Cite

Air pollution is one of the main global environmental problems, where bryophytes, due to their high capacity to retain metals and other pollutants, have been widely used in active air quality monitoring studies in temperate and tropical zones. Thus, in this study, we analyzed for the first time the concentrations of eight metals (cadmium, copper, nickel, aluminum, iron, manganese, lead and zinc) in three species of transplanted mosses (Rhacocarpus purpurascens (Brid.) Paris, Sphagnum sp. and Thuidium delicatulum (Hedw.) Schimp.) from Ecuador. Significant differences were found for the three species in the concentrations of Al, Mn, Fe and Zn between urban and control areas, pointing to the Central zone as the main source of contamination with the highest concentrations of Al, Fe, Mn and Zn, related to vehicular traffic. Lead did not differ between zones for Rhacocarpus purpurascens and Sphagnum sp.; however, Thuidium delicatulum accumulated different concentrations between urban areas and the control areas. The three species of mosses provided valuable information on the contamination of Al, Fe, Mn, Pb and Zn in the urban area of the city of Loja, and therefore can be used in future air quality monitoring programs over time in tropical cities.

show abstract

CAMBIOS EN LA COMPOSICIÓN DE LÍQUENES EPÍFITOS RELACIONADOS CON LA CALIDAD DEL AIRE EN LA CIUDAD DE LOJA (Ecuador).

Cited by 15 publications

References 19 publications

Lichen Responses to Disturbance: Clues for Biomonitoring Land-use Effects on Riparian Andean Ecosystems

Lichen Responses to Disturbance: Clues for Biomonitoring Land-use Effects on Riparian Andean Ecosystems

Diversidad, especificidad de forófito y preferencias microambientales de líquenes cortícolas de un bosque subandino en la región Centro de Colombia

Monitoring Air Quality with Transplanted Bryophytes in a Neotropical Andean City

Contact Info

Product

Resources

About