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Distribución y estado de conservación de las poblaciones de árboles y arbustos del género Polylepis (Rosaceae) en las montañas de Argentina
| Content Provider | Semantic Scholar |
|---|---|
| Author | Renison, Daniel Pacheco, Silvia Guzmán, Gustavo Marcora, Paula Inés Robledo, Gerardo Lucio Cingolani, Ana M. Landi, Marcos Alejandro Bellis, Laura Marisa Hensen, Isabell Luti, Ricardo |
| Copyright Year | 2013 |
| Abstract | 2 distribuidas en 43 localidades y para cada especie describimos los bosques en mejor estado de conservacion que de manera tentativa podrian usarse como referencia para determinar metas de conservacion y en trabajos de restauracion. En tres de las cinco especies encontramos evidencias de fuego en mas de 60% de las parcelas visitadas. Muchas localidades presentaban suelos con evidencias de erosion y escasa cobertura de vegetacion, asi como una baja cobertura y complejidad estructural de bosque. Consideramos que Argentina ofrece buenas oportunidades para la conservacion y restauracion de estos bosques ya que aun quedan grandes extensiones, numerosos relictos, y en muchas areas la presion antropica ha disminuido. Es prioritario reducir los fuegos, establecer mas y mejores areas protegidas y, en particular en el noroeste Argentino, tener un mejor conocimiento de la ecologia de cada especie y desarrollar metodos para restaurar sus bosques. (Palabras clave: Modelos de distribucion, MaxEnt, amenazas, bosques, bosquecillos) ABSTRACT. Distribution and conservation status of the trees and shrubs of the Polylepis genus (Rosaceae) in the mountains of Argentina: The genus Polylepis is endemic to the mountains of South America. Species of this genus frequently dominate the canopy of forests and shrublands whose conservation and restoration is a priority at a continental scale. The five species described for Argentina are distributed in the mountains central and northwestern Argentina. Their distribution, threats and conservation status are poorly described and the degree to which humans have impacted their cover, structure and distribution is controversial. We modeled the distribution per species. Models suggest an area of 14800 km 2 environmentally suitable for at least one of the five species. We surveyed 490 plots of 3600 m 2 distributed in 43 locations and for each species we describe the best preserved forests which could tentatively be used as reference sites when determining conservation and restoration goals. In three of the species we recorded fire evidences in over 60% of the visited plots. Soil erosion was evident in several localities and many forests presented low cover and structural complexity. Argentina provides good opportunities for the conservation and restoration of these forests as there still remain extensive forests, numerous relicts, and in many areas human impacts have been decreasing. It is important to reduce fire events, establish more and better protected areas, to have a better knowledge on the ecology of each species and to develop methods to restore forests, especially in northwestern Argentina. |
| Starting Page | 27 |
| Ending Page | 36 |
| Page Count | 10 |
| File Format | PDF HTM / HTML |
| Volume Number | 23 |
| Alternate Webpage(s) | https://ri.conicet.gov.ar/bitstream/handle/11336/1419/Renison_et_al_2013.pdf?isAllowed=y&sequence=1 |
| Alternate Webpage(s) | https://ri.conicet.gov.ar/bitstream/handle/11336/16128/CONICET_Digital_Nro.19023.pdf?isAllowed=y&sequence=1 |
| Alternate Webpage(s) | http://www.scielo.org.ar/pdf/ecoaus/v23n1/v23n1a04.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
