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| Titel: |
Holocene tree-line fluctuations and climate in central troms, Northern Norway |
| Auteur: |
Alm, Torbjørn Vorren, Karl-Dag Mørkved, Brynhild |
| Verschenen in: |
Historical biology |
| Paginering: | Jaargang 12 (1996) nr. 1 pagina's 25-38 |
| Jaar: |
1996 |
| Inhoud: |
Based mainly on pollen influx data, an attempt is made at reconstructing Holocene tree-line fluctuations and palaeotemperatures in central Troms, North Norway. Both past and present-day (Tauber trap) pollen influx data suggest that influx rates exceeding 250-300 pollen/cm2/year for each of the major arboreal taxa (Betula pubescens and Pinus sylvestris) are only found at sites with corresponding forest types in the immediate surroundings. High influx rates, raised tree-lines and favourable climatic periods are recorded at 7500-4500 and 3000-2600 B.P. Betula and Pinus woodlands may have reached more than 200 m above their present altitude limits, suggesting a July mean temperature 2°C higher than at present during the Holocene optimum. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 3 van 6 gevonden artikelen
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