Bibliographic citations
Zutta, B., (2009). Predicting the Distribution of an Increasingly Vulnerable Ecosystem : The Past, Present, and Future of the Polylepis Woodlands [Tesis, University of California, Los Angeles]. http://renati.sunedu.gob.pe/handle/sunedu/952705
Zutta, B., Predicting the Distribution of an Increasingly Vulnerable Ecosystem : The Past, Present, and Future of the Polylepis Woodlands [Tesis]. US: University of California, Los Angeles; 2009. http://renati.sunedu.gob.pe/handle/sunedu/952705
@phdthesis{renati/1338,
title = "Predicting the Distribution of an Increasingly Vulnerable Ecosystem : The Past, Present, and Future of the Polylepis Woodlands",
author = "Zutta Salazar, Brian Roy",
publisher = "University of California, Los Angeles",
year = "2009"
}
This research aimed to predict current Polylepis species and woodland distribution, distribution during the Last Glacial Maximum (LGM), and changes in species distribution resulting from doubled atmospheric CO2. Regions of high Polylepis species richness were characterized, as well as the extent Polylepis woodlands within international and national protected areas throughout the region. Current, LGM, and future distribution as a result of doubled atmospheric CO2 were predicted for 21 species of Polylepis using the Maxent algorithm over South America. Several environmental layers, including climate, optical, and microwave remote sensing data, were used for particular climate scenarios. Range contraction was predicted to occur for most species, from LGM to future climate, as a result of upslope range shifts to smaller land area as a result of increasing annual temperatures. However, the expansion several species ranges were predicted to occur within the Altiplano of Peru and Bolivia as greater land area becomes available. This is contrary to most models of climate change that solely predict contraction in mountain regions. The sites of highest Polylepis species richness did not closely match the current location of protected areas, indicating that the expansion and addition of protected areas are necessary to preserve key areas of high altitude tropical ecosystems. Overall, the management of remaining Polylepis woodlands must take into account the natural distribution of Polylepis species and their response to future climate change to protect this vulnerable ecosystem and the flora, fauna, and human populations that depend on them.
File | Description | Size | Format | |
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Zutta_Salazar_BR.pdf | Disertación | 261.81 kB | Adobe PDF | ![]() View/Open |
Autorizacion.pdf Restricted Access | Formato de autorización | 159.74 kB | Adobe PDF | View/Open Request a copy |
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