Teunissen van Manen, Milan L, Jansen, B., Cuesta, F., León-Yánez, S. & Gosling, W.D. (2020) From leaf to soil: n-alkane signal preservation, despite degradation along an environmental gradient in the tropical Andes. Biogeosciences Discussions 17, 5465–5487. https://doi.org/10.5194/bg-17-5465-2020
Zhang, Y., van Geel, B., Gosling, W.D., McMichael, C.N.H., Jansen, B., Absalah, S., Sun, G. & Wu, X. (2019) Local vegetation patterns of a Neolithic environment at the site of Tianluoshan, China, based on coprolite analysis. Review of Palaeobotany and Palynology 271, 104101. DOI: 10.1016/j.revpalbo.2019.104101
Teunissen van Manen, M., Jansen, B., Cuesta, F., León-Yánez, S. & Gosling, W.D. (2019) Leaf wax n-alkane patterns of six tropical montane tree species show species-specific environmental response. Ecology and Evolution. DOI: 10.1002/ece3.5458
The second day of the AFQUA conference commenced with the second session on “East Africa” and Prof. Tom Johnson asking the question “Should we drill Lake Victoria?”… and a request for ideas from people to join in with ideas for the proposals for obtaining new sedimentary records from the lake. The East Africa session continued with exploration of Lake Kivu using organic biomarkers to see if past lake ‘explosions’ could be detected (M.E. Berke) and the use of strontium isotopes to detect past climate from lakes in the Turkana Basin (H.J.L. van der Lubbe).
Before lunch the second plenary talk of the conference was delivered by Prof. Sharon Nicolson who made it very clear that the Inter Tropical Convergence Zone does NOT play an important role in controlling rainfall patterns across Africa (see Nicholson, 2018).
After lunch the first oral sessions covered “Southern Africa” and included d13C records from Bobab trees (S. Woodborne and E. Razanatsoa), early human finds in cascade tufas (M.A. Pickford), and quantitative climate reconstructions from pollen using the CREST software (M. Chevalier). After the break we were back for “Quantitative palaeoclimatology, modelling and data-model comparison” thinking about what is abrupt (M. Claussen), the impact of atmospheric CO2 on plants (V.J. Hare), and connectivity between lakes in the Kenyan rift (R. Dommain). Then it was off to the hotel bar to watch the football…
When addressing climate change the focus often is on temperature. However precipitation is a climate variable that is at least as important, but much more difficult to assess. This mini symposium will address several aspects of the changes in the precipitation climate. William Gosling shows how climates in the far past can be reconstructed using proxies. One of these proxies, biomarkers, will be discussed by Susanna Mölkänen, who uses them to reconstruct altitudinal gradients. John van Boxel discusses 20th century climate change in the Netherlands focussing on changes in precipitation extremes. The models that are used to study climate change are the topic of the presentation by Geert Lenderink from KNMI. Some of these models were also used by Emma Daniels (WUR) to study the effect of urbanisation on precipitation in the Netherlands. For anyone involved in climate change and precipitation this should be an interesting afternoon.