McMichael, C.N.H., Vink, V., Heijink, B.M., Witteveen, N.H., Piperno, D.R., Gosling, W.D. & Bush, M.B. (2023) Ecological legacies of past fire and human activity in a Panamanian forest. Plants, People, Planet5, 281-291. DOI: 10.1002/ppp3.10344
I am pleased to announce two new vacancies within the Department of Ecosystem & Landscape Dynamics at the University of Amsterdam. These position are part of a recruitment drive across the Institute for Biodiversity & Ecosystem Dynamics triggered by new funding from the Dutch government (Earth & Environmental Science Sector Plan). Both positions will be at the Assistant Professor level (either Tenure Track, or directly tenured following a period of probation; dependent upon the experience of the successful candidate). For full detail, and how to apply, check out the below links:
These positions are designed to compliment, and strengthen, existing expertise within the department in biogeochemistry, Earth surface science, landscape ecology and palaeoecology. We are looking for scientists who are engaged with laboratory, field and/or modelling focused research, have a proven track record of publishing, and are looking for a base to build their own research group. We are looking for enthusiastic and innovative educators keen to lead and develop practical and field based courses and projects for students in our BSc Future Planet Studies and MSc Earth Sciences degree programs.
If you have any question please do not hesitate to get in contact with me directly: William D. Gosling
If you are interested to join IBED but feel you do not fit to one of these position check out our other vacancies at by clicking here.
Gosling, W.D., Miller, C.S., Shanahan, T.M., Holden, P.B., Overpeck, J.T. & van Langevelde, F. (2022) A stronger role for long-term moisture change than for CO2 in determining tropical woody vegetation change. Science 376, 653-656. https://doi.org/10.1126/science.abg4618
To access this article FREE through the Science author referral service click here.
For more on the palaeoecological dataset underpinning this research check out the PhD thesis of Charlotte Miller by clicking here or here.
With all the horror chaos in the world, science doesn’t seem like the most important thing. I forgot all about my paper, until I received an email, that… the first chapter of my PhD is published! Some positive news I would like to share with you.
If you think about a stereotypical scientist, hidden in a lab, investigating every detail of a tiny thing…. that is great description of what I was doing!
Bush, M.B., Rozas-Davila, A., Raczka, M., Nascimento, M., Valencia, B., Sales, R.K., McMichael, C.N.H. & Gosling, W.D. (2022) A palaeoecological perspective on the transformation of the tropical Andes by early human activity. Philosophical Transactions of the Royal Society B: Biological Sciences 377, 20200497. https://doi.org/10.1098/rstb.2020.0497
Detecting the presence, and impact, of peoples past impact in ecosystems and landscapes in the tropics is a challenging because the traces that they leave behind are few and disentangling them from ‘natural’ (non-human related) variability is a challenge. As an Associate Editor for Vegetation History & Archaeobotany (VHAA) I enjoy handling manuscripts that think about these issues and explore the role of humans in tropical landscapes. Two recent papers published in VHAA touched on this subject (one of which I “communicated” as an editor).
Bodin et al. (2020) studied charcoal recovered from soil at sites with a gradient of archaeological evidence for past human activity in French Guiana.
Goethals & Verschuren (2019) explored the relationship between the amount of dung fungi found in lake sediments and the herbivore populations living around the lakes.
Fast forward to 2019, the Aguarico is now lined by small homesteads interspersed with larger settlements, some laid out by the oil companies, and a couple of oil ports. I asked our guide how far the park was ahead of us, and he looked surprised and said “We are in it”. When we arrived at the Zancudo River there was a cell tower and a village of probably 30-50 houses on the junction with the Aguarico. Ten minutes downstream was a tourist lodge. What a difference! The frontier had expanded ~140 km down the Aguarico. One family with a shotgun eliminates all game larger than a marmoset within 5 km, and these homesteads were packed so tight it was unsurprising that we saw almost no wildlife.
The cell tower at the village of Zancudococha. Photo: M. Bush.
The next day we ventured onto Zancudococha. The Zancudo stream was still pretty, overhung by trees, and had no barriers to navigation. Three boats full of tourists passed us coming out of the lake, clearly having spent the night there. There were no logs to clear, and the path through the Montricardia marsh was two boats wide. There are only two patches of high, dry land on the edge of the lake. One was regularly used as a campsite and the other had a lodge built on it that was operated intermittently by the Zancudo community.
We saw no monkeys, let alone tapirs, this was an empty forest. But we weren’t there to be ecotourists, we were there to raise a sediment core. This time our questions were about the Pre-Columbian use of the lake. Was the lake occupied prior to European arrival? How much did people alter the forest? Was there a surge of forest regrowth following Conquest? Given these questions, the 1 m of sediment that we recovered with a Universal piston corer was all that we needed. One meter of mud from this system spans about 1500 years and that would provide us with the trajectory of use (or non-use) into the colonial period and its aftermath. Our mood in camp was happy, we had been successful in our intent. So, my message is you can’t go back to find what was there before, but that doesn’t mean that it will be a bad experience. Shifting baselines apply to nature in every setting, but they also apply to science as our questions and interests undergo inter-generational changes.
A broad path through the marsh at Zancudococha. Photo M. Bush
The lodge at Zancudococha. Photo: M. Bush.
Mark Bush is a Professor of Biological Science at the Florida Institute of Technology, Melbourne, FL, USA.