Environmental Change Reconstruction Laboratory

...all that happens today is the product of what happened yesterday.


From December 1st, Karolina Molisak joined our ECRLab team. She took up a position of lab assistant. Karolina graduated from Gdansk University of Technology where she studied biotechnology at the Faculty of Chemistry. Welcome on board!


On Monday December 3rd, Prof. Nathalie Fagel from the University of Liege (Belgium) delivered a talk about her research project in Chile: Geochemical record of Lake Jeinimeni & environmental variability over the last centuries in Northern Chilean Patagonia. Lake Jeinimeni is one of very few varved sites in this part of Patagonia. Our lab is responsible for varve counting and establishing chronological framework for this sediment record. We are happy to be involved in this exciting project.


On Thursday November 9th, Dr. hab. Michał Słowiński from the Institute of Geography and Spatial Organization (PAS in Warsaw) delivered a talk about paleoecological record of extreme events in lake sediments. After the 2012 tornado in northern Poland, Michał collected several cores form lakes in the Tuchola Forest. Sediment core from Lake Kałębie investigated by Michał was dated in our lab with Pb-210/Cs-137 method. We are happy to be involved in this exciting project.


On 15-19.10.2018, Ania Poraj-Górska and Maurycy Żarczyński visited the University of Bern in Switzerland. Thanks to cooperation with Prof. Martin Grosjean and his paleolimnology group, our PhD students had an opportunity to present their ongoing research and scan their sediment cores with hyperspectral imaging technique. The Alps were also at hand…


On September 10-14th dr Sabine Wulf and dr Mark Hardiman gave trainig to Gosia Kinder in an alternative method of picking the volcanic glass shards. The training was carried out at the University of Portsmouth (UK) as a part of a project for PhD students and young scientists entitled ‘Cryptotephra in laminated sediments from Lake Żabińskie as a correlation tool for paleoenvironmental reconstructions’.


On September 1-7th the 42nd International Moor Excursion (IME) was held in Poland. This time the participants visited the diverse landscapes of northern Poland with strong focus on peatlands and lakes. The IME crossed several geographical regions: Suwałki Lakeland, Masurian Lakeland, Lower Vistula River, Pomeranian Lakeland, and Toruń-Eberswald ice marginal valley. Multi-proxy and high-resolution reconstructions of fire history, hydrological dynamics, climate, land-use change, and vegetation succession were presented. The excursion was organized by the Laboratory of Wetland Ecology and Monitoring (AMU Poznań).
Our lab was represented by Wojciech Tylmann who showed the results of paleoenvironmental reconstructions from varved sediments of Lake Jaczno.


On August 13-17th the 20th International Sedimentological Congress (ISC) was held in Québec City. There were more than 900 participants from all around the world. Our lab was represented by Małgorzata Kinder, who co-convened the session entitled ‘Varved sediments and the Anthropocene’ and presented two posters:

Małgorzata Kinder, Sabine Wulf
Looking for a needle in a haystack. New distal cryptotephra findings in annually laminated sediments in Poland

Maurycy Żarczyński, Agnieszka Wacnik, Małgorzata Kinder, Wojciech Tylmann
Influence of land use changes on lake mixing regime and redox conditions as recorded in varves of Lake Żabińskie, northeastern Poland


In July our laboratory celebrated the second anniversary. Traditionally, we had a garden party with barbecue and enjoyed Caribbean music.


New paper about ENSO variability reconstruction from Ecuadorian lake Laguna Pallcacocha has been published in Global and Planetary Change. In this publication, we show that clastic layers in the sediments of Lakes Pallcacocha and Fondococha cannot be interpreted as a record of past ENSO variability. The investigations were coordinated by Prof. Martin Grosjean from the University of Bern. Happy reading!

Schneider T., Hampel H., Mosquera P.V., Tylmann W., Grosjean M. 2018 Paleo-ENSO revisited: Ecuadorian Lake Pallcacocha does not reveal a conclusive El Niño signal. Global and Planetary Change, 168: 54–66. DOI 10.1016/j.gloplacha.2018.06.004. LINK


On June 18-21st combined meeting of International Paleolimnology Association and International Association of Limnogeology was held at the University of Stockholm. The conference “Unravelling the Past and Future of Lakes” gathered almost 400 participants from six continents. Our lab presented the ongoing research results as oral and poster presentations. The talk delivered by Maurycy Żarczyński about tracing mixing regimes in Lake Żabińskie was considered one of the best presentations during the conference!

Oral presentations:
Maurycy Żarczyński, Jacek Szmańda, Agnieszka Wacnik, Wojciech Tylmann
Tracing lake mixing regimes using sedimentological and geochemical proxies in varved sediments: 2000-years-long record from Lake Żabińskie (NE Poland)

Tobias Schneider, Lea Fränkl, Martin Grosjean, Adrien Mestrot, Wojciech Tylmann, Pablo V. Mosquera, Henrietta Hampel, Benjamin A. Musa Bandowe
A 150-year record of polycyclic aromatic compound (PAC) and heavy metal deposition from high Andean Cajas National Park, southern Ecuador

Małgorzata Kinder, Sabine Wulf, Anna Poraj-Górska
The potential of annually laminated lake sediments in northern Poland for distal Icelandic cryptotephra investigations

Anna Poraj-Górska, Magdalena Suchora, Agnieszka Szczerba, Wojciech Tylmann
Laminated lake sediments as an indicator of recently induced anoxia in lakes of northern Poland

Wojciech Tylmann, Agnieszka Szczerba, Paulina Głowacka
Different responses of sediment fluxes in lakes to meteorological conditions: preliminary results from process studies in the Masurian Lakeland, Poland

Paul Zander, Martin Grosjean, Wojciech Tylmann, Janusz Filipiak
Combining Hyperspectral Imaging and μXRF data to link varve-formation processes with meteorological data, Lake Zabinskie, Poland

Maurycy Żarczyński, Wojciech Tylmann, Tomasz Goslar
Multiple varve chronologies for the last 2000 years from the annually laminated sediments of Lake Żabińskie (northeastern Poland) – assessment of strategies for varve counting and uncertainty estimations


New paper by Maurycy Żarczyński about varve counting has just been published in Quaternary Geochronology. This paper compares different methods to count biogenic varves based on sediment profile from Lake Żabińskie. We analyze advantages and disadvantages for three different counting methods, and propose the optimal approach for varve counting and uncertainty estimation. The results were obtained in cooperation with Prof. Tomasz Goslar from Poznan Radiocarbon Laboratory.

Żarczyński M., Tylmann W., Goslar T. 2018 Multiple varve chronologies for the last 2000 years from the sediments of Lake Żabińskie (northeastern Poland) – Comparison of strategies for varve counting and uncertainty estimations. Quaternary Geochronology, 47: 107–119. DOI 10.1016/j.quageo.2018.06.001. LINK


On Tuesday May 29th, Dr. Ionela Gavrila from Babes-Bolyai University in Cluj-Napoca delivered a talk “Tree-ring based reconstruction of snow avalanche and debris flow activity in Romanian Carpathians”. Ionela visited our lab within Erasmus+ Staff Training Mobility program.


New paper about isotopic monitoring of Lake Żabińskie has been published in Isotopes in Environmental and Health Studies. Samples of water and sediment from the lake allowed for identification of the factors and processes controlling isotopic signal recorded in the sediments. The results were obtained in cooperation with our colleagues from Silesian University of Technology in the frame of the CLIMPOL project. Happy reading!

Ustrzycka A., Piotrowska N., Bonk A., Filipiak J., Tylmann W. 2018 Isotopic fingerprints of the Lake Żabińskie (NE Poland) hydrological system on contemporary carbonates precipitated in the lake. Isotopes in Environmental and Health Studies, 54: 225–243. DOI 10.1080/10256016.2017.1349118. LINK


On Thursday March 22nd, Dr. Magdalena Suchora from Maria Curie Skłodowska University in Lublin delivered a talk on the past and future of lakes in the Polesie region, southeastern Poland. Magda presented her results of Cladocera analyses in the sediment cores showing environmental changes and their impact on the lake’s ecosystems.


On March 15-16th Paleolimnology Session was held at the Institute of Geography, Pedagogical University of Cracow. The main topic focused on records of Quaternary climate changes and Late Glacial/Holocene boundary in biogenic sediments of southern Poland. Our lab presented three oral presentations and three posters about ongoing research in northern Poland:

Oral presentations:
Dawid Weisbrodt, Anna Poraj-Górska, Maurycy Żarczyński, Wojciech Tylmann
Record of environmental change during the last 150 years as inferred from multiproxy analyses of annually laminated sediments from Lake Jaczno (suwalki Lakeland)

Małgorzata Kinder
Looking for the invisible – cryptotephra in laminated lacustrine sediments in northern Poland

Maurycy Żarczyński, Wojciech Tylmann, Tomasz Goslar
How reliable is varve chronology? Example of Lake Żabińskie

Paulina Głowacka, Agnieszka Szczerba, Wojciech Tylmann
Seasonal variability of sedimentation in lakes Żabińskie and Łazduny

Agnieszka Szczerba, Paulina Głowacka, Wojciech Tylmann
Limnological and hydrochemical conditions of seasonal changes of sediment composition in lakes Żabińskie and Łazduny

Anna Poraj-Górska, Magdalena Suchora, Agnieszka Szczerba, Wojciech Tylmann
Laminated sediments as an indicator of anoxia in lakes of northern Poland