Invasion of Ligustrum lucidum (Oleaceae) in the southern Yungas: Changes in habitat properties and decline in bird diversity

Ayup, Marta; Montti, Lía; Aragón, Roxana; Grau, H. Ricardo

doi:10.1016/j.actao.2013.03.006

Cited by 45 publications

(43 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, at the same time, its dominance may alter biodiversity of animals, such as bird communities (Ayup et al. ), and ecosystem functioning processes (i.e. productivity and water dynamics; Zamora Nasca et al.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Invasion of Ligustrum lucidum (Oleaceae) in subtropical secondary forests of NW Argentina: declining growth rates of abundant native tree species

Malizia

Osinaga‐Acosta

Powell

et al. 2017

J Vegetation Science

View full text Add to dashboard Cite

Aims Ligustrum lucidum, native to China, is one of the dominant exotic and invasive tree species in secondary forests in Argentina. (1) We assessed its invasion during 20 yr in post‐agricultural secondary forests dominated by native tree species, and (2) evaluated tree demographic rates of native individuals under and away from L. lucidum trees that invaded these forests. Locations Four 1‐ha permanent plots of secondary forests, subtropical Andes of Tucumán, Argentina. Methods We quantified the invasion of L. lucidum individuals (≥10‐cm diameter) from 1991 to 2011 within four 1‐ha plots of secondary forests and analysed annual growth and mortality rates of native tree individuals (≥10‐cm diameter) under and away from L. lucidum trees. For this, we compared tree demographic rates of all native individuals together (community level) under and away from individuals of L. lucidum, referred to as exotic and native neighbourhoods, respectively. Then, we described the relative growth rate of native tree species in exotic/native neighbourhoods (species level) and related them to their demographic life histories and morpho‐physiological traits. Results Both density and basal area of L. lucidum increased from 0.1% to 4% between 1991 and 2011. Native tree individuals grew 65% less in exotic neighborhoods compared to native neighborhoods. Relative growth rate showed negative values under L. lucidum individuals for the abundant species Ocotea porphyria, Parapitadenia excelsa, Juglans austalis and Allophylus edulis, indicating competition; while less abundant species Terminalia triflora, Cupania vernalis and Blepharocalix saliscifolius showed positive growth values under L. lucidum, suggesting a facilitation process. Thus, L. lucidum competes efficiently with some native tree species, particularly with those abundant species that dominate the canopy. Conclusions Ligustrum lucidum is invading post‐agricultural secondary forests dominated by native tree species. While invading, L. lucidum competes with native abundant tree species that dominate the main structure of the forest canopy. As this invasive trend will likely increase in the near future, L. lucidum may alter forest structure, composition and dynamics, as well ecosystem functioning.

show abstract

Section: Discussionmentioning

confidence: 99%

“…), as well as forest dynamics, biodiversity and ecosystem functioning (Hobbs ; Lugo & Helmer ; Ayup et al. ).…”

Section: Introductionmentioning

confidence: 99%

Invasion of Ligustrum lucidum (Oleaceae) in subtropical secondary forests of NW Argentina: declining growth rates of abundant native tree species

Malizia

Osinaga‐Acosta

Powell

et al. 2017

J Vegetation Science

View full text Add to dashboard Cite

show abstract

“…Una situación similar podría estar sucediendo en el presente trabajo, siendo probable que el dosel perennifolio del bosque de ligustro intercepte un mayor porcentaje de precipitaciones y que a su vez las variables climáticas influyan en el contenido edáfico de agua, como se observa cuando se comparan el nivel de Selva de Mirtáceas, más húmedo, con el de Selva Basal. Esta hipótesis sería concordante con la mayor cobertura y área basal en-contradas en los ligustrales con respecto al bosque nativo (Ayup et al 2014). Otro aspecto importante a considerar es el análisis de estas tendencias y patrones en función de la escala.…”

Section: Discussionunclassified

“…La disponibilidad de luz es uno de los mayores determinantes en la economía de carbono de las plantas y por lo tanto juega un papel fundamental en la productividad (Reich et al 1992). El sotobosque del bosque nativo, que es mucho más diverso y denso que el del bosque invadido (Ayup et al 2014) tendría un porcentaje de especies que aprovechan esta mayor disponibilidad de luz para crecer durante esta época y aportar significativamente al incremento de los valores de NDVI registrado. Mientras que los bosques de ligustro, al no perder las hojas en ninguna estación, aprovecharían la luz a lo largo de todo el año, explicando también las mayores tasas de crecimiento encontradas con respecto a los árboles nativos (Easdale et al 2007) e imposibilitando el uso de este recurso al sotobosque mucho menos diverso de estos bosques.…”

Section: Discussionunclassified

“…Estos bosques presentan mayor área basal y biomasa acumulada que sus coetáneos nativos, como consecuencia de poseer la mayor tasa de crecimiento observada para árboles de las Yungas (Easdale et al 2007), pero presentan menor biodiversidad animal y vegetal (Ayup et al 2014). El ligustro presenta un desfasaje fenológico con respecto a las especies nativas (Grau y Aragón 2000), altísima producción de frutos durante el invierno, eficiente dispersión de semillas por aves, buena capacidad de reproducción vegetativa y germinación y supervivencia en un amplio rango de hábitats (Aragón y Groom 2003).…”

Section: Métodosunclassified

See 1 more Smart Citation

Efectos de la invasión del ligustro, Ligustrum lucidum, en la dinámica hídrica de las Yungas del noroeste Argentino

et al. 2014

View full text Add to dashboard Cite

SUMMARYArgentinean Yungas (subtropical montane forests) have high biodiversity and play a key role in regional watershed regulation. Ligustrum lucidum (glossy privet), native of China, is one of the dominant exotic tree species in secondary forests of this ecoregion. Due to its high growth rates and green foliage throughout the year -in contrast to native forests which are partially deciduous-the hypothesis is that water availability is reduced in glossy privet forests, especially during dry season (winter-spring). Six pairs of plots both in native and secondary glossy privet dominated forests in Sierra San Javier, Tucumán, Argentina were sampled. Soil moisture, by measuring both volumetric water content and water potential, and estimated productivity of different types of forests, through normalized difference vegetation index (NDVI derived from satellite imagery), were monitored. During 2011 -2012 dry seasons, soil volumetric water content in glossy privet forests was 32.5 % and 24 % lower than in native forests; while soil water potential was respectively eight and four times lower. In glossy privet forests NDVI values were 8.5 % higher than in native forests; particularly in lower altitude forests and those with a higher winter-spring water deficit. These results suggest that the glossy privet forest would be consuming more water, especially during the dry season, due to more prolonged phenology activity compared to native forests. In consequence, glossy privet invasion in Argentinean Yungas could alter water functioning of this ecosystem.Key words: forest-phenology, invasion by exotic trees, MODIS, NDVI, water consumption. RESUMENLas Yungas argentinas (bosques de montaña) tienen alta biodiversidad y un rol clave en la regulación hídrica. El ligustro (Ligustrum lucidum) es una de las especies exóticas que dominan sus bosques secundarios. Debido a sus altas tasas de crecimiento y follaje verde todo el año, se planteó la hipótesis de que la disponibilidad de agua en el suelo se reduciría en bosques de ligustro en comparación con bosques nativos, principalmente durante la época seca (invierno-primavera). Se trabajó en seis pares de parcelas de bosques nativos y bosques secundarios monodominantes de ligustro en la Sierra San Javier, Tucumán, Argentina. Se registró la humedad edáfica mediante mediciones de contenido volumétrico y potencial hídrico y se estimó la productividad de los distintos tipos de bosque mediante el índice de vegetación de diferencia normalizada (NDVI). Durante la época seca de 2011 y 2012, los suelos en ligustrales presentaron un contenido volumétrico de agua 32,5 % y 24 % y un potencial hídrico en el suelo ocho y cuatro veces menor. Se observaron mayores valores de NDVI (8,5 %) en bosques de ligustro que en bosques nativos, principalmente en las selvas localizadas a menor altura y con mayor déficit hídrico inverno-primaveral. Los resultados sugieren que el bosque de ligustro estaría consumiendo mayor cantidad de agua, sobre todo en la época seca, debido a una actividad fenológica más prolon...

show abstract

Questions, Perspectives and Final Considerations of Planting Native Species Under the Climate Change Conditioning

Pastorino

Marchelli

Arana

et al. 2020

Low Intensity Breeding of Native Forest Trees in Argentina

View full text Add to dashboard Cite

Invasion of Ligustrum lucidum (Oleaceae) in the southern Yungas: Changes in habitat properties and decline in bird diversity

Cited by 45 publications

References 39 publications

Invasion of Ligustrum lucidum (Oleaceae) in subtropical secondary forests of NW Argentina: declining growth rates of abundant native tree species

Invasion of Ligustrum lucidum (Oleaceae) in subtropical secondary forests of NW Argentina: declining growth rates of abundant native tree species

Efectos de la invasión del ligustro, Ligustrum lucidum, en la dinámica hídrica de las Yungas del noroeste Argentino

Questions, Perspectives and Final Considerations of Planting Native Species Under the Climate Change Conditioning

Contact Info

Product

Resources

About