Michael Wehrli
Biographic Data
| ID | 6371925 |
|---|---|
| NAME | Michael Wehrli |
| GIVEN NAMES | Michael |
| FAMILY NAME | Wehrli |
| SIGNATURE | WEHRLI M |
| AFFILIATIONS | University of Bern |
| VERIFIED | No |
| TOTAL WORKS | 5 |
| TOTAL CITATIONS | 20 |
| AUTHOR COUNT | 5 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1999 |
| LATEST PUBLICATION YEAR | 2010 |
| H-INDEX | 1 |
Effects of climatic change and bog development on Holocene tufa formation in the Lorze Valley (central Switzerland)
A massive tufa complex in the lower Lorze Valley (550 m a.s.l., north-central Switzerland) formed between 9000 and 5000 cal. yr BP. In the plain 4 km southeast of the complex lies Neugrundmoor (830 m a.s.l.), a mire in the hydrologic recharge area of the springs responsible for the tufa formation. Here we address an earlier, untested hypothesis that the transition of Neugrundmoor from fen to raised bog caused the end of the tufa formation, by mea…
Years of vegetation and settlement history from Egelsee (Menzingen, central Switzerland)
Past vegetation dynamics and human impact from the Lateglacial to the present are reconstructed by pollen analysis of a core 12 m long from the raised bog Egelsee, central Switzerland (770 m a.s.l.). The depth—age model of the core is based on 29 AMS 14 C dates. The oldest dated macrofossil has an age of 13 080 ± 105 radiocarbon yr BP (15 370 cal. yr BP); extrapolation leads to a basal age of the core of 16 200 cal. yr BP. The biostratigraphy sho…
Climatic change and contemporaneous land-use phases north and south of the Alps 2300 BC to 800 AD
A palaeoecological attempt to classify fire sensitivity of trees in the southern Alps
Using pollen percentages and charcoal influx to reconstruct the Holocene vegetation and fire history, we differentiate six possible responses of plants to fire of medium and high frequency: fire-intolerant, fire damaged, fire-sensitive, fire-indifferent, fire-enhanced and fire-adapted. The fire sensitivity of 17 pollen types, representing 20 woody species in the southern Alps, is validated by comparison with today's ecological studies of plant ch…
Long-term forest fire ecology and dynamics in southern Switzerland
1 Pollen and charcoal analysis at two lakes in southern Switzerland revealed that fire has had a prominent role in changing the woodland composition of this area for more than 7000 years. 2 The sediment of Lago di Origlio for the period between 5100 and 3100 bc cal. was sampled continuously with a time interval of about 10 years. Peaks of charcoal particles were significantly correlated with repeated declines in pollen of Abies, Hedera, Tilia, Ul…
A palaeoecological attempt to classify fire sensitivity of trees in the southern Alps
Using pollen percentages and charcoal influx to reconstruct the Holocene vegetation and fire history, we differentiate six possible responses of plants to fire of medium and high frequency: fire-intolerant, fire damaged, fire-sensitive, fire-indifferent, fire-enhanced and fire-adapted. The fire sensitivity of 17 pollen types, representing 20 woody species in the southern Alps, is validated by comparison with today's ecological studies of plant ch…
Years of vegetation and settlement history from Egelsee (Menzingen, central Switzerland)
Past vegetation dynamics and human impact from the Lateglacial to the present are reconstructed by pollen analysis of a core 12 m long from the raised bog Egelsee, central Switzerland (770 m a.s.l.). The depth—age model of the core is based on 29 AMS 14 C dates. The oldest dated macrofossil has an age of 13 080 ± 105 radiocarbon yr BP (15 370 cal. yr BP); extrapolation leads to a basal age of the core of 16 200 cal. yr BP. The biostratigraphy sho…
Long-term forest fire ecology and dynamics in southern Switzerland
1 Pollen and charcoal analysis at two lakes in southern Switzerland revealed that fire has had a prominent role in changing the woodland composition of this area for more than 7000 years. 2 The sediment of Lago di Origlio for the period between 5100 and 3100 bc cal. was sampled continuously with a time interval of about 10 years. Peaks of charcoal particles were significantly correlated with repeated declines in pollen of Abies, Hedera, Tilia, Ul…
A palaeoecological attempt to classify fire sensitivity of trees in the southern Alps
Using pollen percentages and charcoal influx to reconstruct the Holocene vegetation and fire history, we differentiate six possible responses of plants to fire of medium and high frequency: fire-intolerant, fire damaged, fire-sensitive, fire-indifferent, fire-enhanced and fire-adapted. The fire sensitivity of 17 pollen types, representing 20 woody species in the southern Alps, is validated by comparison with today's ecological studies of plant ch…
Climatic change and contemporaneous land-use phases north and south of the Alps 2300 BC to 800 AD
Years of vegetation and settlement history from Egelsee (Menzingen, central Switzerland)
Past vegetation dynamics and human impact from the Lateglacial to the present are reconstructed by pollen analysis of a core 12 m long from the raised bog Egelsee, central Switzerland (770 m a.s.l.). The depth—age model of the core is based on 29 AMS 14 C dates. The oldest dated macrofossil has an age of 13 080 ± 105 radiocarbon yr BP (15 370 cal. yr BP); extrapolation leads to a basal age of the core of 16 200 cal. yr BP. The biostratigraphy sho…
Effects of climatic change and bog development on Holocene tufa formation in the Lorze Valley (central Switzerland)
A massive tufa complex in the lower Lorze Valley (550 m a.s.l., north-central Switzerland) formed between 9000 and 5000 cal. yr BP. In the plain 4 km southeast of the complex lies Neugrundmoor (830 m a.s.l.), a mire in the hydrologic recharge area of the springs responsible for the tufa formation. Here we address an earlier, untested hypothesis that the transition of Neugrundmoor from fen to raised bog caused the end of the tufa formation, by mea…
Biology (5 works) · Geography (5 works) · Geology and Paleoclimatology Research (5 works) · Holocene (4 works) · Physical geography (4 works) · Pollen (4 works) · Ecology (3 works) · Geology (3 works) · Abies alba (2 works) · Archaeology (2 works)