A Broad Transition from Cloud Forest to Páramo Characterizes an Undisturbed Treeline in Parque Nacional Llanganates, Ecuador

References Cited

• Acosta-Solis, M. , 1984: Los páramos andinos del Ecuador. Quito: Publicaciones MAS, 220 pp.
   Google Scholar
• Ange Jaramillo, C. , Castaño Uribe, C. , Arjona Hincapié, F. , Rodriguez, J. V. , and Durán, C. L. , 2002: Congreso Mundial de Páramos. Memorias. Bogotá: Ministerio del Medio Ambiente, CAR, IDEAM, Conservation International, 1185 pp.
   Google Scholar
• Anhalzer, J. J. , 1998: Llanganati. Quito: Libri Mundi. 97 pp.
   Google Scholar
• Bader, M. Y. , 2007: Tropical Alpine Treelines: How Ecological Processes Control Vegetation Patterns and Dynamics. Ph.D. thesis, Wageningen, Wageningen University, 193 pp.
   Google Scholar
• Bader, M. Y. , Rietkerk, M. , and Bregt, A. K. , 2007: Vegetation structure and temperature regimes of tropical alpine treelines. Arctic, Antarctic, and Alpine Research 39: 353–364.
   Web of Science ®Google Scholar
• Baker, P. A. , Seltzer, G. O. , Fritz, S. C. , Dunbar, R. B. , Grove, M. J. , Tapia, P. M. , Cross, S.L. , Brown, H. D. , and Broda, J. P. , 2001: The history of South American tropical precipitation for the past 25,000 years. Science , 291: 640–643.
   PubMed Web of Science ®Google Scholar
• Blakemore, L. C. , Searle, P L. , and Daly, B. K. , 1981: Methods for Chemical Analysis of Soils. Wellington: New Zealand Soil Bureau, Scientific Report 80, 103 pp.
   Google Scholar
• Buytaert, W. , Célleri, R. , De Bièvre, B. , Cisneros, F. , Wyseure, G. , Deckers, J. , and Hofstede, R. , 2006: Human impact on the hydrology of the Andean páramos. Earth-Science Reviews , 79: 53–72.
   Web of Science ®Google Scholar
• Buytaert, W. , and De Bièvre. B. , 2012: Water for cities: the impact of climate change and demographic growth in the tropical Andes. Water Resources Research , 48: W08503.
   Google Scholar
• Cabaneiro, A. , Fernandez, I. , Pérez-Ventura, L. , and Carballas, T. , 2008: Soil CO2 emissions from Northern Andean páramo ecosystems: Effects of fallow agriculture. Environmental Science and Technology , 42: 1408–1415.
   Google Scholar
• Castaño, C. 2002: Páramos y ecosistemas alto andinos de Colombia en condición hotspot y global climatic tensor. Bogotá: IDEAM.
   Google Scholar
• Chimner, R. A. , and Karberg, J. M. , 2008: Long-term carbon accumulation in two tropical mountain peatlands, Andes Mountains, Ecuador. Mires and Peat , 3: art 4.
   Google Scholar
• Clarke, K. R. , and Warwick, R. M. , 2001: Change in Marine Communities: An Approach to Statistical Analysis and Interpretation. 2nd edition. Plymouth: Primer-E, 172 pp.
   Google Scholar
• Cleef, A. M. , 1981: The Vegetation of the Páramos of the Colombian Cordillera Oriental. Vaduz, Liechtenstein: J. Cramer. 321 pp.
   Google Scholar
• Contreras, D. A. , 2010: Landscape and environment: insights from the prehispanic Central Andes. Journal of Archaeological Research , 18: 241–288.
   Web of Science ®Google Scholar
• Cuatrecasas, J. , 1958: Aspectos de la vegetación natural de Colombia. Revista de la Academia Colombiana de Ciencias Exactas y Físicas , 10: 221–264.
   Google Scholar
• Cuatrecasas, J. , 2013: A Systematic Study of the Subtribe Espeletiinae (Heliantaceae, Asteracea). New York: NYBG Press, Memoirs of the New York Botanical Garden, Volume 107, 704 pp.
   Google Scholar
• Cuesta, F. , Bustamante, M. , Becerra, M. T. , Postigo, J. , and Peralvo M. , 2012 : Panorama andino de cambio climático: vulnerabilidad y adaptación en los Andes Tropicales. Lima: Condesan, SG-CAN, 329 pp.
   Google Scholar
• Di Pasquale, G. , Marziano, M. , Impagliazzo, S. , Lubritto, S. , De Natale, A. , and Bader, M. Y. , 2008: The Holocene treeline in the northern Andes (Ecuador): First evidence from soil charcoal. Palaeogeography, Palaeoclimatology, Palaeoecology , 259: 17–34.
   Web of Science ®Google Scholar
• Dickinson, K. J. M. , Mark, A. F. , Barratt, B. I. P. , and Patrick, B. H. , 1998: Rapid ecological survey, inventory and implementation: a case study from Waikaia Ecological Region, New Zealand. Journal of the Royal Society of New Zealand , 28: 83–156.
   Web of Science ®Google Scholar
• Ellenberg, H. , 1958: Wald oder Steppe. Die natüraliche Planzendecke der Anden Perus (I, II). Die Umschau im Wissenschaft und Technik , 21: 679–681, 22: 679–681.
   Google Scholar
• Ellenberg, H. , 1979: Man's influence on tropical mountain ecosystems in South America. Journal of Ecology , 67: 401–416.
   Web of Science ®Google Scholar
• FAO/ISRIC/ISSS, 1998: World Reference Base for Soil Resources. Rome: FAO, World Soil Resources Report. Volume 84, 88 pp.
   Google Scholar
• Farley, K. A., Jobbágy, E. G., and Jackson, R. B. , 2005: Effects of afforestation on water yield: a global synthesis with implications for policy. Global Change Biology , 11: 1565–1576.
   Web of Science ®Google Scholar
• Farley, K. A. , Kelly, E. F. , and Hofstede, R. G. M. , 2004: Soil organic carbon and water retention after conversion of grasslands to pine plantations in the Ecuadorian Andes. Ecosystems , 7: 729–739.
   Web of Science ®Google Scholar
• Germino, M. J. , and Smith, W. K. , 1999: Sky exposure, crown architecture, and low-temperature photoinhibition in conifer seedlings at alpine treeline. Plant, Cell, and Environment , 22: 407– 415.
   Web of Science ®Google Scholar
• González, W. , Llambí, D. L. , and Smith, J. K. , 2011: Dinámica sucesional del componente arbóreo en la transición entre el bosque-páramo en los Andes Tropicales. Ecotrópicos , 24: 60–79.
   Google Scholar
• Grabherr, G. , Gottfried, M. , and Pauli, H. , 2010: Climate change impacts in alpine environments. Geography Compass , 4: 1133– 1153.
   Google Scholar
• Grace, J. , Berninger, F. , and Nagy, L. , 2002: Impacts of climate change on the tree line. Annals of Botany , 90: 537–544.
   PubMed Web of Science ®Google Scholar
• Hofstede, R. G. M. . 1995: Effects of livestock farming and recommendations for management and conservation of páramo grasslands (Colombia). Land Degradation and Rehabilitation , 6: 133–147.
   Google Scholar
• Hofstede, R. G. M. , Groenendijk, J. P. , Coppus, R. , Fehse J. , and Sevink, J. , 2002: Impact of pine plantations on soils and vegetation in the Ecuadorian high Andes. Mountain Research and Development , 22: 159–167.
   Web of Science ®Google Scholar
• Hofstede, R. , Segarra, P. , and Mena Vásconez, P. , 2003: Los páramos del mundo. Quito: IUCN, Global Peatland Initiative, Ecociencia, 299 pp.
   Google Scholar
• Hofstede, R. , 2011: Historia, tendencias y perspectivas para el manejo de los páramos. In Maldonado, G. , and de Bievre, B. (eds.), PARAMUNDI, 2do Congreso Mundial de Páramos. Memorias. Lima: CONDESAN, 34–45.
   Google Scholar
• Innes, J. L. , 1991: High-altitude and high-latitude tree growth in relation to past, present and future global climate change. Holocene , 1: 168–173.
   Google Scholar
• Jantz, N. , and Behling, H. , 2012: A Holocene environmental record reflecting vegetation, climate, and fire variability at the Páramo of Quimsacocha, southwestern Ecuadorian Andes. Vegetation History andArchaeobotany , 21: 169–185.
   Web of Science ®Google Scholar
• Jørgensen, P. M. , and Ulloa Ulloa , C., 1994: Seed Plants of the High Andes of Ecuador: A Checklist. Aarhus: Department of Systematic Botany, Aarhus University, AAU Report 34, 453 pp.
   Google Scholar
• Kessler, M. , Grytnes, J. A. , Halloy, S. R. P. , Kluge, J. , Krömer, T. , León. B. , Macía, M. J. , and Young, K. R. , 2011: Gradients of plant diversity: local patterns and processes. In Herzog, S. K. , Martinez, R. , Jørgensen, P. M. , and Tiessen, H. (eds.), Climate Change and Biodiversity in the Tropical Andes. Sao José dos Campos, Brazil: IAI-SCOPE, 204–219.
   Google Scholar
• Körner, C. , 1998: A re-assessment of high elevation treeline positions and their explanation. Oecologia , 115: 445–459.
   PubMed Web of Science ®Google Scholar
• Körner, Ch. , and Spehn, E. , 2002: Mountain Biodiversity: A Global Assessment. New York: Parthenon, 341 pp.
   Google Scholar
• Körner, C. , and Paulsen, J. , 2004: A world-wide study of high altitude treeline temperatures. Journal of Biogeography , 31: 713–732.
   Web of Science ®Google Scholar
• Körner, C. , 2012: Alpine Treelines: Functional Ecology of the Global High Elevation Tree Limits. Basel, Switzerland: Springer, 220 pp.
   Google Scholar
• Laegaard, S. , 1992: Influence of fire in the grass páramo vegetation of Ecuador. In Balslev, H. , and Luteyn, J. L. (eds.), Páramo: An Andean Ecosystem under Human Influence. London: Academic Press, 151– 170.
   Google Scholar
• Lauer, W. , 1981: Ecoclimatological conditions of the pàramo belt in the tropical high mountains. Mountain Research and Development , 1: 209–221.
   Google Scholar
• Llambí, L. D. , Puentes, J. A. , and Garcia-Núñez, C. , 2013: Spatial relations and population structure of a dominant tree along a treeline ecotone in the Tropical Andes: interactions at gradient and plant-neighbourhood scales. Plant Ecology & Diversity , 6: 343–353.
   Web of Science ®Google Scholar
• López Sandoval, M. E. , 2004: Agricultural and Settlement Frontiers in the Tropical Andes: The Páramo Belt of Northern Ecuador, 1960–1990. Regensburg, Germany: University of Regensburg, Regensburger Geographische Schriften, Heft 37, 180 pp.
   Google Scholar
• Luteyn, J. L. , 1999: Páramos. A Checklist of Plant Diversity, Geographical Distribution and Botanical Literature. New York: The New York Botanical Garden Press, Memoirs of the New York Botanical Garden, Volume 84, 278 pp.
   Google Scholar
• Marchant, R. , and Hooghiemstra, H. , 2004: Rapid environmental change in African and South American tropics around 4000 years before present: a review. Earth Science Reviews , 66: 217–260.
   Web of Science ®Google Scholar
• Miehe, G. , and Miehe, S. , 1994: Zur oberen Waldgrenze in tropischen Gebirge. Phytocoenologia , 24: 53–110.
   Google Scholar
• Miehe, G. , and Miehe, S. , 2000: Comparative high mountain research on the treeline ecotone under human impact. Carl Troll's “asymmetrical zonation of the humid vegetation types of the world” of 1948 reconsidered. Erdkunde , 54: 34–50.
   Google Scholar
• Monasterio, M. , and Sarmiento, L. , 1991: Adaptive radiation of Espeletia in the cold Andean tropics. Trends in Ecology and Evolution , 6: 387–391.
   PubMed Web of Science ®Google Scholar
• Moscol, M. C. , 2010: Holocene Upper Forest Line Dynamics in the Ecuadorian Andes. Ph.D. dissertation. Amsterdam: University of Amsterdam, 228 pp.
   Google Scholar
• Mothes, P. , 1991: El paisaje volcánico de la Sierra Ecuatoriana. Geomorfología, fenómenos volcánicos y recursos asociados. Quito: Corporación Editora Nacional/Colegio de Geógrafos del Ecuador. Estudios de Geografía, 4, 92 pp.
   Google Scholar
• Podwojewski, P. , Poulenard, J., Zambrana, T. , and Hofstede, R. , 2002: Overgrazing effects on vegetation cover and volcanic ash soil properties in the páramo of Llangahua and La Esperanza (Tungurahua, Ecuador). Soil Use and Management , 18: 45–55.
   Web of Science ®Google Scholar
• Price, M. , 2006: Global Change in Mountain Regions. Duncow, U.K.: Sapiens, 343 pp.
   Google Scholar
• Ramírez, L. , Llambí, L. D. , Schwarzkopf, T. , Gámez, L. E. , and Márquez, N. J. , 2009: Vegetation structure along the forest-páramo transition belt in the Sierra Nevada de Mérida: implications for understanding treeline dynamics. Ecotrópicos , 22: 83–98.
   Google Scholar
• Rangel, C. J. O. , 2000: Colombia Diversidad Biológica III. La region de vida paramuna. Bogotá: Universidad Nacional de Colombia, Instituto de Ciencias Naturales, Instituto Alexander von Humboldt, 902 pp.
   Google Scholar
• Smith, A. P. , 1994: Introduction to tropical alpine vegetation. In Rundel, P. W. , Smith, A. P. , and Meinzer, F. C. (eds.), Tropical Alpine Environments. Plant Form and Function. Cambridge: Cambridge University Press, 1–19.
   Google Scholar
• Salamanca, S. , 1992: La vegetación del páramo y su dinámica en la macizo volcánico Ruiz-Tolima (Cordillera Central, Colombia). Bogotá: Instituto Geográfico Augustin Codazzi, Análisis Geográficos, 21. 155 pp.
   Google Scholar
• Sarmiento, F. O. , 2002: Human drivers of landscape change: treeline dynamics in neotropical montology. Ecotropicos , 15: 129–146.
   Google Scholar
• Sklenár, P. , and Balslev, H. , 2004: Superpáramo plant species diversity and phytogeography in Ecuador. Flora , 200: 416–433.
   Google Scholar
• Smith, A. P. , 1978: Establishment of seedlings of Polylepis sericea in the páramo (Alpine) zone of the Venezuelan Andes. Bartonia , 45: 11–14.
   Google Scholar
• Stevens, G. C. , and Fox, J. F. , 1991: The causes of treeline. Annual Review of Ecology and Systematics , 22: 177–191.
   Google Scholar
• Tonneijck, F. H. , Van Der Plicht, J. , Jansen, B. , Verstraten, J. M. , and Hooghiemstra, H. , 2006: Radiocarbon dating of soil organic matter fractions in Andosols in northern Ecuador. Radiocarbon , 48: 337– 353.
   Web of Science ®Google Scholar
• Thouret, J. C. , and Faivre, P. , 1989: Suelos de la Cordillera Central. In Van der Hammen, T. , Diaz Piedrahita, S. , and Alvarez, V. J. (eds.). La Cordillera Central Colombiana. Transecto Parque los Nevados (segunda parte). Estudios de Ecosistemas Tropandinos, 3. Berlin/ Stuttgart: J. Cramer, 293–442.
   Google Scholar
• Ulloa Ulloa, C. , and Jørgensen, P., 1993: Árboles y arbustos de los Andes del Ecuador. AAU Reports 30. Aarhus, Denmark: Department of Systematic Botany, Aarhus University, 264 pp.
   Google Scholar
• Vázquez, M. A. , Larrea, M. , and Suárez, L. , 2000: Biodiversidad en el Parque Nacional Llanganates: un reporte de las evaluaciones y socioeconómicas rápidas. Quito: EcoCiencia, Ministerio del Ambiente, Herbario Nacional del Ecuador, Museo Ecuatoriana de Ciencias Naturales, Instituto Internacional de Reconstrucción Rural, 203 pp.
   Google Scholar
• Vélez, V. , Cavelier, J. , and Devia, B. , 1998: Ecological traits of the tropical treeline species Polylepis quadrijuga (Rosaceae) in the Andes of Colombia. Journal of Tropical Ecology , 15: 771–787.
   Google Scholar
• Verweij, P. A. , 1995: Spatial and Temporal Modelling of Vegetation Patterns. Burning and Grazing in the Páramo of Los Nevados National Park, Colombia. Ph.D. dissertation. Amsterdam: University of Amsterdam, 233 pp.
   Google Scholar
• Wada, K. , and Higashi, T. , 1976: The categories of aluminium- and iron-humus complexes in ando soils determined by selective dissolution. Journal of Soil Science , 27: 357–368.
   Google Scholar
• Walter, H. , and Medina, E. , 1969: La temperatura del suelo como factor determinante para la caracterización de los pisos subalpino y alpino en los Andes de Venezuela. Boletín de la Sociedad Venezolana de Ciencias Naturales , 28: 201–210.
   Google Scholar
• Wardle, P. , 1971: An explanation for alpine timberline. New Zealand Journal of Botany , 9: 371–402.
   Google Scholar
• Wille, M. , Hooghiemstra, H. , Hofstede, R. , Fehse, J. , and Sevink, J. , 2002: Upper forest line reconstruction in a deforested area in northern Ecuador based on pollen and vegetation analysis. Journal of Tropical Ecology , 18:409–440.
   Web of Science ®Google Scholar
• Yánez, P. , 1998: Caracterización florística en un sector de cambio páramo-selva nublada en el Parque Nacional Sierra Nevada, Venezuela. Revista Forestal Venezolana , 42: 51–62.
   Google Scholar
• Young, K. R. , and Keating, P. L. , 2001: Remnant forests of Volcán Cotacachi, northern Ecuador. Arctic, Antarctic, and Alpine Research , 33: 165–172.
   Web of Science ®Google Scholar
• Young, K. R. , and León, B. , 2007: Tree-line changes along the Andes: implications of spatial patterns and dynamics. Philosophical Transactions of the Royal Society B , 362: 263–272.
   PubMed Web of Science ®Google Scholar
• Young, K. R. , 2009: Andean land use and biodiversity: humanized landscapes in a time of change. Annals of the Missouri Botanical Garden , 96: 492–507.
   Web of Science ®Google Scholar
• Zehetner, F. , Miller, W. P. , and West, L. T. , 2003: Pedogenesis of volcanic ash soils in Andean Ecuador. Journal of the Soil Science Society of America , 67: 1797–1809.
   Web of Science ®Google Scholar