Time for topical ecology

March 14, 2025
WDG

8th European Conference of Tropical Ecology

36th Annual Meeting of the Society for Tropical Ecology

24-28 February 2025, Amsterdam

The 8th European Conference of Tropical Ecology took place in Amsterdam (The Netherlands) from 24 to 28 February 2025. This meeting was organized for the Society for Tropical Ecology. The event was hosted by the Institute for Biodiversity & Ecosystem Dynamics (University of Amsterdam), held at Hotel Casa, and the main sponsor was the NWO (Dutch Science Foundation).

During the conference around 250 scientists delivered 150 oral and 69 poster presentations. The science spanned the full breadth of tropical ecology, ranging from interactions of coral dwelling crabs, through carbon cycling dynamics in forests, to the governance of hunting activity. The six keynote speakers were paired under three topics “Human legacies in the tropics”, “Tropical ecosystem dynamics”, and “Protecting tropical ecosystems”. Within each topic we invited a senior scientist and a ‘rising star’ to provide their perspective on a particularly hot-button issue. If you want to find out more about what was presented all the abstracts are now published, open access, in the Society for Tropical Ecology’s journal Ecotropica.

Abstract booklet

Open access:
Gosling, W.D. & McMichael, C.N.H., eds. (2025) Time for tropical ecology: Abstracts of the 8th European Conference of Tropical Ecology, Amsterdam, The Netherlands; 24.-28.2.2025. The Society for Tropical Ecology, Ecotropica, 26 (1-2): 1-222. https://doi.org/10.30427/ECOTROP202501

Eccentricity-driven glacial climate variability and its influence on speciation in the tropical Andes

March 12, 2025
WDG

Open access:

Chevalier, M., Gosling, W.D., Hooghiemstra, H., Cartapanis, O., Chase, B.M. & Kaboth-Bahr, S. (2025) Eccentricity-driven glacial climate variability and its influence on speciation in the tropical Andes. Quaternary Science Advances 100278. DOI: 10.1016/j.qsa.2025.100278

Palynologische Kring: Seminar day

January 14, 2025
WDG

The next seminar series of the Palynologische Kring (Dutch palynological society) will take place on 24 January 2025, at the Auditorium of TNO Utrecht. If you would like to attend please register by emailing the society (link).

PROGRAMME

13.00-13.15    Arrival

13.15-13.45    Irene Waajen (TNO): Re-evaluation of Early Weichselian pollen zones with new insights from the North Sea.

13.45-14.15    Nathalie Van der Putten (VU) & Jeroen Schokker (TNO): Zagwijn revisited: the Eemian to Early-Weichselian sequence in the Amersfoort Basin.

14.15-14.45    Freek Busschers (TNO): Response of the Eerbeek alluvial fan to 150.000 years of (sub)orbital climate fluctuations.

14.45-15.00    Break

15.00-15.30    Timme Donders (UU): An update of the Late Pliocene and Early Pleistocene vegetation and climate stratigraphy of NW Europe.

15.30-16.00    Sander Houben (TNO): A new stratigraphic framework for the Lower Pleistocene of the Netherlands.

16.00        Social drinks

Heat, hydroclimate and herbivory

January 6, 2025
WDG

Mapping Ancient Africa Quaternary International special issue article #5

Kiely, R.E., Paine, A.R., McMichael, C.H. & Gosling, W.D. (2025) Heat, hydroclimate and herbivory: A late-Pleistocene record of environmental change from tropical western Africa. Quaternary International 717, 109636. DOI: 10.1016/j.quaint.2024.109636

To find the complete list of articles in the Mapping Ancient Africa special issue of Quaternary International click here.

Big History

December 18, 2024
WDG

This week I will give a lecture on the University of Amsterdam, Institute for Interdisciplinary Studies, BSc Big History course. This course sets out with the large ambition of covering “How the histories of the cosmos, life, Earth and human societies influence each other and shape important aspects of the world together?” The small component of this that I am involved in relates to the understanding of past environmental change and how humans have shaped the landscapes we see around us today.

Related to the topic of past environmental change Prof. Henry Hooghiemstra (University of Amsterdam), and the Big History team, have produced a short video “How are civilizations influenced by climate change?”. In this video a introduction to how we can obtain information on past environmental change from the sedimentary record is given, and examples of changing landscapes and cultures in the Netherlands and Mexico are discussed.

You can find more Big History content in the University of Amsterdam Big History MOOC (Massive Online Open Content) by clicking here.

Fieldwork in the Drakensberg

December 11, 2024
WDG

South African research trip (part 3 of 3)

by Jelle Kraak

As part of my MSc Biological Sciences research project at the University of Amsterdam I  travelled to Africa, where I first presented the early findings of my research at the SASQUA congress (blog post 1) in Oudtshoorn (Western cape), before heading to the University of Kwa-Zulu Natal (blog post 2). Here I met up with local experts and prepared for the upcoming fieldwork, which the previous parts of this blog series covered. Now, the time has come for the final and best part, about my fieldwork in the absolutely gorgeous Drakensberg mountains.

Aims: As the samples for my research had already been collected earlier by my supervisors Prof. Dr. Jemma Finch & Prof. Dr. Trevor Hill for the University of Kwa-Zulu Natal, our initial goal was to collect various samples (charcoal, sediment cores, etc) for the next students. During my time at the university of Kwa-Zulu natal, however, we realized that it would be great to collect a bunch of C3 and C4 grass species, to extract phytoliths (amorphous silica particles formed in plant tissues) from, which would help with the interpretation of our data. This then became our new focus. To achieve this goal we visited the Drakensberg twice, one day trip in the weekend, and one trip with an overnight stay.

Day 1

After a night of utterly terrible sleep (I was alone on the AirBnB property, the gate did not lock due to the cold, and our dogs started barking at something (someone!?) at 2AM), I woke up at 6AM to get ready for the long day ahead of us. Jemma came to pick me up at the, bringing coffee with her, which I really appreciated. We then picked up Trevor at their place and began our drive towards the mountains.  I had not seen much of the landscape in the Kwa-Zulu Natal province, which turned out to be very compared to the Western Cape. Whereas the western cape had fynbos vegetation (very similar to the Mediterranean, KZN was more savanna like. There was grass everywhere the eye could see, except for the patches of spruce, planted by humans. Halfway through the drive the Drakensberg mountains came into view, which was stunning. We then drove through some small villages, until we finally arrived at the Berg.

Continue Reading

Hugo de Vries Prijs 2024

December 2, 2024
WDG

The annual PhD thesis prize from the Koninklijk Nederlandse Botanische Vereniging (Royal Dutch Botanical Association) is now open. The prize of EURO 5000 will be awarded to the best PhD thesis defended between January and December 2024 at a Dutch university. The subject matter of the thesis is broadly defined within the field of botany, and includs topics such as taxonomy, (palaeo- / macro-) ecology, and cell biology.

For details of past winners, and how to nominate someone for this years prize visit:
https://www.knbv.eu/hugo-de-vries-prijs/

European Conference of Tropical Ecology: Registration Open

November 14, 2024
WDG

We are excited that more than 250 abstracts have been submitted for the 8th European Conference of Tropical Ecology “Time for Tropical Ecology” in Amsterdam. Furthermore, we are delighted to announce the NWO (the Dutch Science Foundation) as the main sponsors of the event. The conference is being organised by the Institute for Biodiversity & Ecosystem Dynamics (University of Amsterdam) on behalf of the European Society of Tropical Ecology. The conference will take place in February 2025 at a central location in the city (Hotel Casa).

We have an exciting program emerging including keynotes from three ‘rising star’ and three ‘senior’ scientists, a conference dinner (House of Watt), and a photo competition with prizes! Throughout the program we hope to create a vibrant atmosphere for the discussion of cutting edge research into the tropical regions of planet Earth.

You can be a part of this event by registering now. Early bird rate is valid until: 18 December 2024

Witteveen PhD thesis

November 8, 2024
WDG

Witteveen, N.H. (2024) Long-term forest recovery in Amazonia: Insights from phytolith analysis. PhD Thesis, University of Amsterdam, Amsterdam. ISBN: 9789493260290

Abstract

The aim of this thesis was to provide insight into past human activities in Amazonia, and the long-term forest recovery that followed, using phytolith analysis. The first part of this thesis focused on improving phytolith analysis as a proxy for vegetation changes in Amazonia. The morphological variation of 24 Amazonian palm phytoliths were assessed (Chapter 2) to improve the taxonomic resolution of palm phytolith identification, and results indicate the potential to differentiate Euterpe, Bactris, Oenocarpus, Attalea, Iriartea deltoidea, and Socratea exorrhizaChapter 3 demonstrated that phytolith assemblages (from terrestrial soil cores) varied across a gradient of (modern) human disturbance in Surinamese rainforests. In Chapters 4-6, we developed beta regression and GLM models to predict forest cover and biomass changes within 200 m and 1 km of Amazonian lakes, respectively, using grass phytoliths. Applying these innovations in Chapters 5-6 demonstrated that past human activities were on localized scales in Suriname and temporally heterogenous in Ecuador. Palm enrichment of Attalea, Oenocarpus and Astrocaryum occurred within 0 km, 1 km, and 8 km of an archaeological site in Suriname (Chapter 5). In Ecuador, forest cover and biomass ranged between 48-84% and 77-247 Mg/ha, respectively, and the largest decreases (between 1000-1255 CE) were paired with fires (Chapter 6). Overall, the type, intensity, timing, and frequency of disturbances are important factors influencing long-term forest recovery and ecological legacies in Amazonia.

Handel: https://hdl.handle.net/11245.1/7e7ef2f7-7341-4978-9d89-d23fe46f24ae

Quantifying past forest cover and biomass changes in the Ecuadorian Amazon

November 7, 2024
WDG

Open access:

Witteveen, N.H., Kleijwegt, Z.S., Geara, H., Kool, C., Blaus, A., Saenz, L.C., Gomes, B.T., Philip, A., Bush, M.B. & McMichael, C.N.H. (2024) Quantifying past forest cover and biomass changes in the Ecuadorian Amazon. New Phytologist. DOI: 10.1111/nph.20237

This paper is the latest to come from the PhD thesis of Nina Witteveen who defended at the University of Amsterdam earlier in 2024. To find out more about Nina’s PhD click here.

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