Papers by Miguel Sevilla-callejo
Archaeopress Publishing Ltd eBooks, Oct 31, 2018
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Boletin De La Asociacion De Geografos Espanoles, Dec 14, 2022
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Journal of Eastern African Studies, Feb 1, 2011
... Graciela Gil-Romeraa,b, David Turtonb* and Miguel Sevilla-Callejoc ... the overthrow of the g... more ... Graciela Gil-Romeraa,b, David Turtonb* and Miguel Sevilla-Callejoc ... the overthrow of the government of Emperor Haile Selassie (1974), the first arrival of Protestant missionaries amongst the Mursi (1989) and the installation of a series of hand-dug wells in the Elma Valley (1997 ...
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Cuadernos de investigación geográfica / Geographical Research Letters, 2013
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Quaternary Science Reviews, May 1, 2010
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Quaternary International, Jun 1, 2016
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Global Environmental Change-human and Policy Dimensions, Oct 1, 2010
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Quaternary International, Jun 1, 2016
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Cuadernos de investigación geográfica, Jul 8, 2013
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Quaternary Science Reviews, 2020
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This document reports the activites and studies carried out by Ibercivis in 2018 running the Span... more This document reports the activites and studies carried out by Ibercivis in 2018 running the Spanish Citizen Science Observatory. It describes the catalogue of practices, the analysis of impacts, the evolution of citizen science publications in scientific journals, a comparison of citizen science organizations, an overview of citizen science funding programmes, and a report of citizen science dissemination activites such as the #CitSciChatES twitter sessions or more than 70 articles published in general media. Final version with correct formatting will be published April 2019 Spanish version only. Further info upon request. Contact person: Francisco Sanz frasanz@bifi.es
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Fire is the most frequent disturbance in the Ericaceous Belt (<i>ca</i> 3000–4300 m a... more Fire is the most frequent disturbance in the Ericaceous Belt (<i>ca</i> 3000–4300 m a.s.l.), one of the most important plant communities of tropical African mountains. Through resprouting after fire, <i>Erica</i> establishes a positive fire feedback under certain burning regimes. However, present-day human activity in the Bale Mountains of Ethiopia includes fire and grazing systems that may have a negative impact on the resilience of the ericaceous ecosystem. Current knowledge of <i>Erica</i>–fire relationships is based on studies of modern vegetation, lacking a longer time perspective that can shed light on baseline conditions for the fire feedback. We hypothesize that fire has influenced <i>Erica</i> communities in the Bale Mountains at millennial time-scales. To test this, we (1) identify the fire history of the Bale Mountains through a pollen and charcoal record from Garba Guracha, a lake at 3950 m a.s.l., and (2) describe the long-term bidirectional feedback between wildfire and <i>Erica,</i> which may control the ecosystem's resilience. Our results support fire occurrence in the area since <i>ca.</i> 14 000 years ago, with particularly intense burning during the early Holocene, 10.8–6.0 cal ka BP. We show that a positive feedback between <i>Erica</i> abundance and fire occurrence was in operation throughout the Lateglacial and Holocene, and interpret the Ericaceous Belt of the Ethiopian mountains as a long-term fire resilient ecosystem. We propose that controlled burning should be an integral part of landscape management in the Bale Mountains National Park.
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Fire is the most frequent disturbance in the Ericaceous Belt (<i>ca</i> 3000–4300 m a... more Fire is the most frequent disturbance in the Ericaceous Belt (<i>ca</i> 3000–4300 m a.s.l.), one of the most important plant communities of tropical African mountains. Through resprouting after fire, <i>Erica</i> establishes a positive fire feedback under certain burning regimes. However, present-day human activity in the Bale Mountains of Ethiopia includes fire and grazing systems that may have a negative impact on the resilience of the ericaceous ecosystem. Current knowledge of <i>Erica</i>–fire relationships is based on studies of modern vegetation, lacking a longer time perspective that can shed light on baseline conditions for the fire feedback. We hypothesize that fire has influenced <i>Erica</i> communities in the Bale Mountains at millennial time-scales. To test this, we (1) identify the fire history of the Bale Mountains through a pollen and charcoal record from Garba Guracha, a lake at 3950 m a.s.l., and (2) describe the long...
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Raw data for the Marboré Lake pollen dataset obtained from the Neotoma Paleoecology Database.
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Cuadernos de Investigación Geográfica, 2013
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Global and Planetary Change, 2014
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El Parque Nacional y ANMI Cotapata desde su creacion en 1993 esta afectado por la construccion de... more El Parque Nacional y ANMI Cotapata desde su creacion en 1993 esta afectado por la construccion de la carretera Cotapata-Santa Barbara. Esta nueva infraestructura viaria, enmarcada dentro de las politicas regionales de conexion entre el interior amazonico y la costa Pacifica, esta provocando a nivel local impactos ambientales y sociales de relevancia, transformando en consecuencia, la realidad territorial de la zona. Mediante trabajo de campo, tratamiento de imagenes satelitales y fotografia aerea, cartografia digital, documentacion de archivo y la integracion en un entorno SIG se esta analizado la nueva realidad territorial. La nueva carretera, practicamente finalizada en la actualidad, ha potenciado en un espacio con fuertes pendientes, una activa dinamica geomorfologica, pero sobre todo ha desencadenado otros procesos relacionados con la mejora en la accesibilidad al territorio tales como el avance de la frontera agricola, el surgimiento de un nuevo patron de campesinado periurban...
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The pollen sequence for the last 2000 years from Basa de la Mora Lake (Central Pyrenees, 1914m a.... more The pollen sequence for the last 2000 years from Basa de la Mora Lake (Central Pyrenees, 1914m a.s.l.), points to climate variability as the main forcing controlling vegetation evolution in the Pyrenean mountains. The interpreted landscape during the Roman Period shows features coherent with warmer and more humid climate associated to the “Roman Humid Period” (50 B.P.-500 A.D.). After a transitional stage during the V-IX centuries the vegetation shows evidences of arid conditions reflecting the “Medieval Warm Period” (900-1300 A.D.). Finally during the “Little Ice Age” (13001850 A.D.) cooler and more humid conditions occurred. Human-related taxa (crops and pastures) appeared already 2000 years ago, but in such low percentages that slight human impact is inferred. Coinciding with the onset of the LIA cultivated taxa, principally Olea, start to spread indicating an increasing human occupation of the lowlands. Sharp variations in the forest cover during this period suggest short events...
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Papers by Miguel Sevilla-callejo