Selected publications

Scientific highlights of IGB
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11 - 20 of 371 publications
September 2024
Journal of Hydrology. - 643(2024), Art. 131914

Electrical conductivity fluctuations as a tracer to determine time-dependent transport characteristics in hyporheic sediments

Jonas L. Schaper; Olaf A. Cirpka; Joerg Lewandowski; Christiane Zarfl

The paper presents a modeling approach to estimate time-varying travel times from the stream water to the streambed. The modeling is based on fluctuations in electrical conductivity in the surface water and in the porewater. Given the high temporal dynamics of transport in streambed sediments, the model will be a valuable tool for the assessment of reactive transport in streambed sediments.

September 2024
Limnology and Oceanography. - 69(2024)8, 1882-1899

Migrating ripples create streambed heterogeneity altering microbial diversity and metabolic activity

Anna Oprei; José Schreckinger; Norbert Kamjunke; Anja Worrich; Michael Mutz; Ute Risse-Buhl

The field study compared sediment characteristics as well as multitrophic diversity and function in two vertical layers of migrating ripples and stationary patches in sandy lowland streams. It indicates that migrating bedforms create streambed heterogeneity by modulating the abundance, diversity, and structure of different trophic guilds of microbial communities and their resource acquisition.

People_and_Nature
September 2024
People and Nature. - 6(2024)4, 1681-1695

Reintroduced, but not accepted: Stakeholder perceptions of beavers in Germany

Maximilian Hohm; Simon S. Moesch; Jennifer Bahm; Dagmar Haase; Jonathan M. Jeschke; Niko Balkenhol

The authors conducted a scientific online survey among representatives of the general public, forestry and agriculture to find out their opinions on beavers in Germany. The majority of the general public have a positive view of beavers, while the agricultural and forestry sectors have a much more negative view. There are also regional differences. 

September 2024
Water Research. - 262(2024), Art. 122267

Persulfate activation by biochar and iron: Effect of chloride on formation of reactive species and transformation of N,N-diethyl-m-toluamide (DEET)

Yiling Zhuang; Stephanie Spahr; Holger V. Lutze; Christoph J. Reith; Nikolas Hagemann; Andrea Paul; Stefan B. Haderlein

This study investigated the formation of reactive species during the activation of the chemical oxidant persulfate with biochar and iron in different water types for the removal of organic contaminants. The presence of organic matter and chloride altered the reactive species formed, emphasizing that the water matrix is a critical factor for the application of this oxidation process .

September 2024
Nature Sustainability. - 7(2024), 956–963

Recreational killing of wild animals can foster environmental stewardship

Samuel Shephard; Erica von Essen; Thorsten Gieser; Charles J. List; Robert Arlinghaus

The authors add a new perspective to the topic of "recreational use of wild animals". The hypothesis is that an emotionally intense interaction between hunters / anglers and wild animals can create a particularly strong sense of responsibility, described as "environmental stewardship". This in turn would be an incentive for many to commit to lifelong environmental and species protection action. 

September 2024
Nature Communications. - 15(2024), Art. 7449

The global extent and severity of operational interactions between conflicting pinnipeds and fisheries

John Jackson; William N. S. Arlidge; Rodrigo Oyanedel; Katrina Joan Davis

Conservation efforts have led to the recovery of pinnipeds populations worldwide after decades of intensive hunting and culls. However, this positive development has led to conflicts with fisheries, particularly small-scale fisheries. They are almost three times more likely to come into conflict with seals, sea lions and walruses, and lose four times more of their catch than larger fisheries.

September 2024
FEMS Microbiology Ecology. - 100(2024)6, Art. fiae073

Light over mechanics: microbial community structure and activity in simulated migrating bedforms are controlled by oscillating light rather than by mechanical forces

Anna Oprei; José Schreckinger; Insa Franzmann; Hayoung Lee; Michael Mutz; Ute Risse-Buhl

The authors tested the effect of 3 migration velocities as well as oscillating and constant light conditions on the structure and function of the microbial community residing in sediments from migrating ripple and stationary patches: Light oscillation is the predominating environmental factor during ripple migration, resulting in an increased vulnerability of light-dependent photoautotrophs.

September 2024
BioScience. - XX(2024)X, XX–XX

Fish habitat models for a future of novel riverscapes

Henry H. Hansen; Claudio Comoglio; Jelger Elings; Philip Ericsson; Peter Goethals; Marie-Pierre Gosselin; Franz Hölker; Christos Katopodis; Paul Kemp; Lovisa Lind; Rachel Mawer; Gloria Mozzi; John M. Nestler; John Piccolo; Johannes Radinger; Matthias Schneider; Velizara Stoilova; Bernhard Wegscheider; Eva Bergman

The authors introduce the concept of novel river landscapes, the limitations of current fish habitat models and opportunities for new models. They outline 3 priority data-driven opportunities that incorporate the novel riverscape concept: fish movement, river behavior, and drivers of novelty that all are integrated into a scale-based framework to guide the development of new models. 

Nature_Water
September 2024
Nature Water. - XX(2024)X, XX-XX

Mixtures of organic micropollutants exacerbated in vitro neurotoxicity of prymnesins and contributed to aquatic toxicity during a toxic algal bloom

Beate I. Escher; Jörg Ahlheim; Alexander Böhme; Dietrich Borchardt; Werner Brack; Georg Braun; John K. Colbourne; Janek Paul Dann; Joern Gessner; Annika Jahnke; Maria König; Nils Klüver; Martin Krauss; Jungeun Lee; Xiaojiang Li; Stefan Lips; Luisa Orsini; Karsten Rinke; Mechthild Schmitt-Jansen; Stefan Scholz; Tobias Schulze; Stephanie Spahr; Nadin Ulrich; Markus Weitere; Elisabeth Varga

This study investigated how organic micropollutants and the algal toxins prymnesins interact as mixtures in water extracts from the Oder River using neurotoxic effects on human nerve cells in vitro. The authors showed that prymnesins dominate the neurotoxic effects, but many of the detected organic micropollutants exacerbate the lethal effect of prymnesins.

Cover_Scientific_Reports
September 2024
Scientific Reports. - 14(2024), Art. 16445

Unpredicted ecosystem response to compound human impacts in a European river

Jan Köhler; Elisabeth Varga; Stephanie Spahr; Jörn Gessner; Kerstin Stelzer; Gunnar Brandt; Miguel D. Mahecha; Guido Kraemer; Martin Pusch; Christian Wolter; Michael T. Monaghan; Matthias Stöck; Tobias Goldhammer

The authors have compiled and analyzed the key environmental factors that led to the mass development of the brackish water alga Prymnesium parvum in the Oder in the summer of 2022. The data synthesis shows how multiple stressors combined to allow an alga that normally thrives in stagnant salt water to proliferate en masse in a completely atypical habitat.