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Clima y actividades humanas en la dinámica de la vegetación durante los últimos 2000 años en el Pirineo Central : el registro palinológico de la Basa de la Mora (Macizo de Cotiella)
| Content Provider | Semantic Scholar |
|---|---|
| Author | Pérez-Sanz, Ana González-Sampériz, Penélope Valero-Garcés, Blas Caballud, Ana Moreno Morellón, Mario Marcén, Carlos Sancho Belmonte, Ánchel Gil-Romera, Graciela Sevilla-Callejo, Miguel Izquierdo, Ana Navas |
| Copyright Year | 2011 |
| Abstract | 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 of forest decline but not a permanent deforestation of the subalpine belt. Intense changes in land use at the onset of the Industrial Era are the main factors responsible of the expansion of the arboreal trees since 1850. This trend was accentuated after 1950 as consequence of the large rural exodus. The results obtained in the Basa de la Mora sequence indicate that climate changes not only have conditioned the evolution of the vegetation until recent periods but also the degree of the human impact over the landscape. |
| Starting Page | 17 |
| Ending Page | 38 |
| Page Count | 22 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://digital.csic.es/bitstream/10261/47592/1/Basa%20de%20la%20Mora-1.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
