Fernando Torrejón
Biographic Data
| ID | 2304922 |
|---|---|
| NAME | Fernando Torrejón |
| GIVEN NAMES | Fernando |
| FAMILY NAME | Torrejón |
| SIGNATURE | TORREJÓN F |
| AFFILIATIONS | University of Concepción |
| VERIFIED | No |
| TOTAL WORKS | 9 |
| TOTAL CITATIONS | 2 |
| WORKS AS AUTHOR | 9 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2003 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 1 |
Regional signals of recent environmental changes in northern Patagonia through the sediment record of a small lake
Reconstruyendo la degradación ambiental del Lago Vichuquén, Región del Maule, Chile, mediante el uso de registros históricos-documentales
Through a historical-documentary analysis the environmental condition of Vichuquén lake and its adjacent area was reconstructed between the 19th and 20th centuries. The obtained results allowed to determine the natural landscape transformations provoked by the human intervention. It was established that until the end of 19th century the environmental intervention would have been moderate, but was during this period when a more intensified human i…
A new multi-proxy record of environmental change over the last 1000 years on Chiloé Island
Knowledge of past environmental and climatic conditions of lake ecosystems on Chiloé Island on a millennial scale is limited. Hence, this study fills a gap in our understanding of this part of southern Chile. The aim of this study was to reconstruct the environmental and climatic history of the last 1000 years of Lake Pastahué through a multi-proxy sediment core analysis. The 1-m-long core was subsampled every centimeter for the organic matter, m…
Lacustrine record of last millennia eruptions in Northern Chilean Patagonia (45–47°S)
Due to its tectonic setting, the Andean Southern Volcanism Zone (SSVZ) is characterized by frequent volcanic activity. Chilean Patagonia lake sediments represent powerful archives of historical and past eruptions since the deglaciation. The lacustrine tephra record is investigated in 10 Holocene sedimentary cores collected in five lakes located along a 45–47° transect through Northern Chilean Patagonia. All the tephras identified by visual observ…
Descifrando La Historia Ambiental De Los Archipiélagos De Aysén, Chile
A travs de un anlisis histrico documental se reconocen los efectos del impacto humano en el territorio insular de Aysn, entre los siglos XVI y XIX. Los resultados obtenidos permiten reconstruir un proceso de intervencin ambiental que alcanz su peak en la segunda mitad del siglo XIX, marcado por una notoria degradacin de los ecosistemas locales debido a la caza comercial de pinnpedos y la tala maderera del ciprs de las Guaitecas. Se constata que l…
Pérdida y fragmentación del bosque nativo en la cuenca del río Aysén (Patagonia-Chile) durante el siglo XX
En este trabajo se estim la prdida y fragmentacin de bosque nativo en la cuenca del ro Aysn, ocurrida entre los aos 1900 y 1998, debido principalmente a incendios forestales producto de la colonizacin del territorio. En la reconstruccin de la cobertura boscosa fueron de gran utilidad distintos registros histricos y el sistema de informacin geogrfica (SIG ArcView 3.2). Se aplicaron diferentes ndices del paisaje (rea, densidad y tamao del fragmento…
Historical records of Cipreses glacier (34°S)
The historical behaviour of Cipreses glacier from the nineteenth through the early twentieth century is described based on written records, cartography, iconography and photographs. These data allow us to infer that the last maximum advance of Cipreses glacier attributable to the ‘Little Ice Age’ occurred around AD 1842. The first historical retreat was recorded in 1858 and, since then, the glacier has shown a clear retreating trend with no new a…
Historical records of San Rafael glacier advances (North Patagonian Icefield)
Past ice lobe behaviour at Laguna San Rafael is described in documents provided by Spanish and then Chilean explorers from the late seventeenth to the early twentieth centuries. These records begin in AD 1675, when temperate conditions, probably similar to those at present, prevailed. At that point, the glacier was confined within its valley, not penetrating the Laguna. The glacier advanced noticeably during the nineteenth century and probably re…
Impacto ambiental temprano en la Araucanía deducido de crónicas españolas y estudios historiográficos
Chilean historiography states Araucanian territory kept its pristine conditions until the republican period beginning. However, the presence of border military enclaves would have produced an early environmental disturbance in the Araucania. To validate this hypothesis, a study of the Spanish chronicles, old documents and historiographical studies was done. Results indicate there was significant environmental disturbance on the Araucanian ecologi…
A new multi-proxy record of environmental change over the last 1000 years on Chiloé Island
Knowledge of past environmental and climatic conditions of lake ecosystems on Chiloé Island on a millennial scale is limited. Hence, this study fills a gap in our understanding of this part of southern Chile. The aim of this study was to reconstruct the environmental and climatic history of the last 1000 years of Lake Pastahué through a multi-proxy sediment core analysis. The 1-m-long core was subsampled every centimeter for the organic matter, m…
Historical records of Cipreses glacier (34°S)
The historical behaviour of Cipreses glacier from the nineteenth through the early twentieth century is described based on written records, cartography, iconography and photographs. These data allow us to infer that the last maximum advance of Cipreses glacier attributable to the ‘Little Ice Age’ occurred around AD 1842. The first historical retreat was recorded in 1858 and, since then, the glacier has shown a clear retreating trend with no new a…
Impacto ambiental temprano en la Araucanía deducido de crónicas españolas y estudios historiográficos
Chilean historiography states Araucanian territory kept its pristine conditions until the republican period beginning. However, the presence of border military enclaves would have produced an early environmental disturbance in the Araucania. To validate this hypothesis, a study of the Spanish chronicles, old documents and historiographical studies was done. Results indicate there was significant environmental disturbance on the Araucanian ecologi…
Historical records of San Rafael glacier advances (North Patagonian Icefield)
Past ice lobe behaviour at Laguna San Rafael is described in documents provided by Spanish and then Chilean explorers from the late seventeenth to the early twentieth centuries. These records begin in AD 1675, when temperate conditions, probably similar to those at present, prevailed. At that point, the glacier was confined within its valley, not penetrating the Laguna. The glacier advanced noticeably during the nineteenth century and probably re…
Historical records of Cipreses glacier (34°S)
The historical behaviour of Cipreses glacier from the nineteenth through the early twentieth century is described based on written records, cartography, iconography and photographs. These data allow us to infer that the last maximum advance of Cipreses glacier attributable to the ‘Little Ice Age’ occurred around AD 1842. The first historical retreat was recorded in 1858 and, since then, the glacier has shown a clear retreating trend with no new a…
Pérdida y fragmentación del bosque nativo en la cuenca del río Aysén (Patagonia-Chile) durante el siglo XX
En este trabajo se estim la prdida y fragmentacin de bosque nativo en la cuenca del ro Aysn, ocurrida entre los aos 1900 y 1998, debido principalmente a incendios forestales producto de la colonizacin del territorio. En la reconstruccin de la cobertura boscosa fueron de gran utilidad distintos registros histricos y el sistema de informacin geogrfica (SIG ArcView 3.2). Se aplicaron diferentes ndices del paisaje (rea, densidad y tamao del fragmento…
Descifrando La Historia Ambiental De Los Archipiélagos De Aysén, Chile
A travs de un anlisis histrico documental se reconocen los efectos del impacto humano en el territorio insular de Aysn, entre los siglos XVI y XIX. Los resultados obtenidos permiten reconstruir un proceso de intervencin ambiental que alcanz su peak en la segunda mitad del siglo XIX, marcado por una notoria degradacin de los ecosistemas locales debido a la caza comercial de pinnpedos y la tala maderera del ciprs de las Guaitecas. Se constata que l…
Lacustrine record of last millennia eruptions in Northern Chilean Patagonia (45–47°S)
Due to its tectonic setting, the Andean Southern Volcanism Zone (SSVZ) is characterized by frequent volcanic activity. Chilean Patagonia lake sediments represent powerful archives of historical and past eruptions since the deglaciation. The lacustrine tephra record is investigated in 10 Holocene sedimentary cores collected in five lakes located along a 45–47° transect through Northern Chilean Patagonia. All the tephras identified by visual observ…
A new multi-proxy record of environmental change over the last 1000 years on Chiloé Island
Knowledge of past environmental and climatic conditions of lake ecosystems on Chiloé Island on a millennial scale is limited. Hence, this study fills a gap in our understanding of this part of southern Chile. The aim of this study was to reconstruct the environmental and climatic history of the last 1000 years of Lake Pastahué through a multi-proxy sediment core analysis. The 1-m-long core was subsampled every centimeter for the organic matter, m…
Reconstruyendo la degradación ambiental del Lago Vichuquén, Región del Maule, Chile, mediante el uso de registros históricos-documentales
Through a historical-documentary analysis the environmental condition of Vichuquén lake and its adjacent area was reconstructed between the 19th and 20th centuries. The obtained results allowed to determine the natural landscape transformations provoked by the human intervention. It was established that until the end of 19th century the environmental intervention would have been moderate, but was during this period when a more intensified human i…
Regional signals of recent environmental changes in northern Patagonia through the sediment record of a small lake
Geography (7 works) · Geology and Paleoclimatology Research (5 works) · Geology (4 works) · Physical geography (4 works) · Tree-ring climate responses (4 works) · Archaeology (3 works) · Art (3 works) · Climate change (3 works) · Humanities (3 works) · Period (music (3 works)