Published

2015-07-01

Historical and potential extinction of shrub and tree species through deforestation in the department of Antioquia, Colombia

Extinción histórica y potencial de especies de arbustos y árboles debido a la deforestación en el departamento de Antioquia, Colombia

DOI:

https://doi.org/10.15446/rfnam.v68n2.50981

Keywords:

Andean mountains, endemism, Fisher´s alpha, tropical hotspots (en)
Montañas de los Andes, endemismo, alfa de Fisher, centros de alta diversidad tropical (es)

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Authors

  • Álvaro Javier Duque Montoya Universidad Nacional de Colombia
  • Edersson Cabrera Montenegro IDEAM
  • Álvaro Idarraga Piedrahíta Universidad de Antioquia
We assessed the expected historical and current species richness of shrubs and trees in the Department of Antioquia, northwest region of Colombia. We used the Fisher's alpha value associated with the pooled dataset of identified species in 16 1-ha plots that were used to extrapolate the scaled species richness of the Antioquia Province under three different scenarios: 1) the entire region before deforestation began, assuming an original forest cover of around 92% of the entire province (excluding paramos, rivers, and lakes). 2) The forest cover in 2010. 3) The expected forest cover in 2100 assuming the observed deforestation rate between 2000 and 2010 as a constant. We found that, despite relatively low local and global losses of species, global extinctions in terms of number of species could be dramatically high due to the high endemism and deforestation rates.

En este estudio, se evaluó la extinción histórica esperada y actual de arbustos y árboles en el Departamento de Antioquia, noroeste de Colombia. Para estimar la riqueza de especies, se empleó el valor del Alfa de Fisher asociado con el conjunto de especies plenamente identificadas provenientes de 16 parcelas de 1 ha a la escala del Departamento de Antioquia, bajo tres escenarios: 1) la region entera antes de que la deforestación iniciará, para lo cual asumimos un 92% del área total del Departamento (excluimos páramos, ríos y lagos). 2) La cobertura de bosques estimada a 2010. 3) La cobertura de bosques estimada a 2100 asumiendo como constante la tasa de deforestación estimada entre 2000 y 2010. Se encontró que a pesar de que la pérdida de especies a escala regional fue relativamente baja, los números asociados con la extinción de especies podrían en cambio ser bastante altos debido al alto endemismo y la alta tasa de deforestación.

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How to Cite

Duque Montoya, Álvaro J., Cabrera Montenegro, E., & Idarraga Piedrahíta, Álvaro. (2015). Historical and potential extinction of shrub and tree species through deforestation in the department of Antioquia, Colombia. Revista Facultad Nacional De Agronomía Medellín, 68(2), 7659-7665. https://doi.org/10.15446/rfnam.v68n2.50981

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