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Two hundred years of environmental change in Picos de Europa National Park inferred from sediments of Lago Enol, northern Iberia

AuthorsLópez Merino, Lourdes; Moreno Caballud, Ana CSIC ORCID ; Leira, Manel; Sigrò, Javier; González-Sampériz, Penélope CSIC ORCID ; Valero-Garcés, Blas L. CSIC ORCID ; López Sáez, José Antonio CSIC ORCID ; Brunet, Manola; Aguilar, E.
KeywordsPicos de Europa National Park
Anthropogenic impacts
Little Ice Age
Issue DateOct-2011
PublisherSpringer Nature
CitationJournal of Paleolimnology 46(3): 453-467 (2011)
AbstractWe present a study of two short sediment cores recovered from Lago Enol, in the Picos de Europa National Park, Cantabrian Mountains, northern Iberia. We inferred past climate conditions and anthropogenic impacts using geochemical and biological (pollen and diatoms) variables in the dated sequences, in conjunction with temperature and precipitation data collected since 1871 at meteorological stations in the region. The record provides evidence of environmental changes during the last 200 years. At the end of the Little Ice Age (~1800-1875 AD) the region was characterized by an open landscape. Long-term use of the area for mixed livestock grazing in the mountains, and cultivation of rye during the nineteenth century, contributed to the expansion of grassland at the expense of forest. Warmer temperatures since the end of the nineteenth century are inferred from a change in diatom assemblages and development of the local forest. Socioeconomic transformation during the twentieth century, such as livestock changes related to dairy specialization, planting of non-native trees, mining activities, and management of the national park since its creation in 1918, caused profound changes in the catchment and in the lake ecology. The last several decades (~1970-2007 AD) of the Lago Enol sediment record are strikingly different from previous periods, indicating lower runoff and increasing lake productivity, particularly since AD 2000. Today, the large number of tourists who visit the area cause substantial impacts on this ecosystem. © 2011 Springer Science+Business Media B.V.
DescriptionTítulo del postprint: The last two centuries of environmental history in Picos de Europa National Park as assessed from sediments of a mountain lake (Lago Enol, N Iberia)
Publisher version (URL)
Identifiersissn: 0921-2728
Appears in Collections:(CCHS-IH) Artículos
(IPE) Artículos

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