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jGDNÄ: “We are backed by a highly motivated team”

“WE ARE BACKED BY A HIGHLY MOTIVATED TEAM”

Bei der ersten Mitgliederversammlung der jGDNÄ in Bremen wurden erstmals zwei Sprecher gewählt: Lennard Kleemann, der Molekulare Biotechnologie an der Universität Heidelberg und zusätzlich Humanmedizin studiert und Nina Rack – sie studiert Humanmedizin an der Universität Greifswald. Hier sprechen sie über das, was die jGDNÄ in zwei Jahren erreicht hat und über große Pläne für die Zukunft.

Two years ago, at the GDNÄ meeting in Potsdam, the Young GDNÄ was founded. Where does it stand today?

Lennard: In Potsdam, the Young GDNÄ was merely announced; we first had to think about what we wanted to make of it. Since then, we’ve achieved a great deal: We have a social media team; we organised a jGDNÄ congress in Heidelberg in 2025; we’ve set up a buddy programme where student mentors support younger members; we’ve agreed on a set of rules of procedure; and we’ve pushed ahead with networking with other organisations for young scientists. Incidentally, we no longer refer to it as the ‘Young GDNÄ’, but as the ‘Young Network of the GDNÄ’.

Nina: We also helped organise the preparatory workshops and evening entertainment as part of the school pupils’ programme, initiated the talk by Cologne-based forensic biologist Mark Benecke, set up the student advisory service for school pupils, and launched the NextMed Science Café.

Lennard: Not to mention the first general meeting of the jGDNÄ, at which not only were the two of us elected as spokespersons for two years, but a coordination team comprising six subject representatives was also established, modelled on the GDNÄ.

Wow. And you still find time to study on top of all that?

Nina: Absolutely. Before the conferences, it’s naturally a lot of work. But in between, the tasks are spread out quite well, especially because we’re backed by a highly motivated team of around thirty very active jGDNÄ members.

How many of you are there in total?

Lennard: We have 160 members. Now, following the Bremen conference, another hundred participants from the school programme will be joining us. Anyone who joins the GDNÄ as a young person up to the age of 32 automatically becomes a member of ours.

What’s your relationship with the GDNÄ like?

Nina: Very good. The Executive Board supports us in every way, and our projects are also funded by the GDNÄ. We attend the Executive Board meetings and our views are taken seriously. We’re also very pleased with our collaboration with the secretariat: our emails are answered quickly, even at the weekend, and Ms Landeck and Ms Diete are on hand to help with any questions we have.

What are your plans for next?

Lennard: The next jGDNÄ Congress will take place from 24 to 27 June 2027 in Frankfurt am Main, and intensive preparations are currently under way. The theme is ‘Knowledge Connects Worlds’. The focus will be on the natural and technical sciences and medicine. As we did in Heidelberg in 2025, we’ll be visiting research institutions and production facilities, partly with a view to potential future workplaces for us. Nina, a native of Frankfurt, will be in charge of coordination.

Nina: Fortunately, I’ll have a brilliant team to help. On the evening of 25 June, there will also be a regional meeting in Frankfurt – see the QR code – to which not only GDNÄ members but anyone interested is invited. We’ll hear a talk by the journalist and qualified neurobiologist Dr Regina Oehler entitled ‘The Illusion of the Simple Answer: Theses on Science Journalism Using the Brain and Consciousness as Examples’ – a great starting point for our discussion afterwards.

Professorin Eva-Maria Neher © Universität Göttingen/Peter Heller

© GDNÄ

Lennard Kleemann, who is studying molecular biotechnology at the University of Heidelberg as well as medicine, and Nina Rack: She is studying medicine at the University of Greifswald.

Professorin Eva-Maria Neher © Universität Göttingen/Peter Heller


QR code: Initial information and pre-registration for the jGDNÄ Congress in Frankfurt am Main in June 2027.

Heribert Hofer: “Biology does not shackle women”

“Biology does not shackle women”

Heribert Hofer is not only Vice-President of the GDNÄ and a mentor for the jGDNÄ, the organisation for young scientists, but also a renowned zoologist and behavioural ecologist. He spoke about his field research on spotted hyenas in the Serengeti during the biology session at the Bremen Congress Centre..

Professor Hofer, your talk focused on female assertiveness in spotted hyenas. How does this trait manifest itself?
When females win conflicts with males not just occasionally, but virtually always, we speak of female dominance. And this is very clearly evident in spotted hyenas, as we know from our forty years of research in the Serengeti. 

Serengeti.To what extent can insights about spotted hyenas be applied to us humans?
Like spotted hyenas, humans are highly social creatures. One difference is that, in human societies, both parents care for their offspring, whereas in spotted hyena clans, it is only the females who do so. Zoologists would describe human societies as predominantly patriarchal in organisation, whereas hyena clans are clearly matriarchal. Research into hyenas is important for determining whether male dominance is part of the blueprint for mammals or not.

Institut für Quantenoptik und Quanteninformation (IQOQI). © IQOQI/M.R.Knabl

© MIKA-fotografie | Berlin

Young women at the 2026 GDNÄ conference in Bremen.

The subordination of women in patriarchal societies is often justified on the grounds of a lack of physical strength. Are female hyenas stronger than males?
No, on average both sexes are similarly strong. Female dominance among them has little to do with physical strength. We regularly observe immature females dominating older, larger males. The secret behind these young females is quite simply their mothers and aunts: they sit nearby and keep the situation under control. Female partners in a hyena pack compensate for physical disadvantages – an observation that invites comparison with humans. 

Another frequently cited reason for female inferiority is a lack of aggression hormones such as testosterone. Do your findings from the Serengeti support this hypothesis?
Our hormone measurements show roughly the same concentration ratio in humans and hyenas. In male hyenas, the testosterone concentration is about ten times higher than in their female counterparts. And yet, dominance behaviour varies extremely widely. So it cannot be down to hormonal status. 

Could it perhaps be linked to genes, as some claim?
No evidence of this can be found in hyenas. 

If the usual explanations don’t hold water, what then explains female superiority among hyenas?
On the one hand, there is female solidarity: two females together will always win a confrontation with a male. On the other hand, there is the constellation – rare amongst mammals – whereby males are unable to exert any coercion during sexual intercourse. They only get their chance if they have previously established a friendly relationship with the female, and they have to work on this for weeks on end. As zoologists, we describe this as sexual selection for social competence, and this is unusual amongst mammals. 

What lessons can we humans learn from this?
The usual biologically based arguments for female inferiority do not hold true. Where it does occur, such inferiority is instead culturally determined. Biology does not place any constraints on women when it comes to assertiveness.

Mit Medaille und Urkunde in der Bielefelder Stadthalle © David Ausserhofer

© MIKA-fotografie | Berlin

Professor Heribert Hofer at the 2026 GDNÄ conference in Bremen.

About the person

Professor Heribert Hofer is Vice-President of the GDNÄ and, as its President, was responsible for the scientific programme of the 133rd General Assembly in Potsdam in 2024. From 2000 to 2025, the renowned zoologist headed the Leibniz Institute for Zoo and Wildlife Research (IZW) in Berlin-Friedrichsfelde. He is affiliated with the Free University of Berlin as a professor of interdisciplinary wildlife research. 

Prior to his time in Berlin, he conducted research from 1986 to 1999 at the Max Planck Institute for Behavioural Physiology in Seewiesen, Bavaria, initially as a postdoctoral researcher and later as an independent researcher. In 1997, he obtained his habilitation at Ludwig Maximilian University of Munich with a thesis on the behaviour of spotted hyenas in the Serengeti savannah. Heribert Hofer began his studies in zoology at Saarland University and completed them at the University of Oxford with a DPhil.

Within the GDNÄ, Heribert Hofer served as an elected subject representative and group chair for Biology, delivering speeches at meetings; as Vice-President during the preparations for the 200th-anniversary celebrations in Leipzig; and, since 2025, as Past President. Professor Hofer has made a significant contribution to the development of the jGDNÄ.

Further information:

Paul Mühlenhoff: The Student Program and jGDNÄ are becoming increasingly interconnected

“The Student Program and jGDNÄ are becoming increasingly interconnected”

Paul Mühlenhoff has headed the GDNÄ’s Student Program since 2012. His full-time position is as a senior teacher of biology and German at a high school in Bielefeld. This year, as in previous years, his school granted him a few days off to prepare for and carry out the Student Program.

Mr. Mühlenhoff, how is the 2026 Student Program going?
Very well so far. One hundred students are participatin – most of them are from the Bremen, Lower Saxony, and North Rhine-Westphalia regions. This year, for the first time, the jGDNÄ organized the preparatory workshops. There were five meetings during which the students prepared for the presentations and subsequent panel discussions. This led to excellent results, as we saw this morning in the “Computer Science / Mathematics” session: The students were able to challenge the scientists with well-reasoned questions and engage with them. The young people have been very visible at the conference from the very beginning. Last night, the “Science in 5 Minutes” science slam was once again very well attended; today through Sunday, the young participants are engaging in panel discussions with researchers. What pleases me particularly is the strong connection between the student program and the jGDNÄ.

Professorin Eva-Maria Neher © Universität Göttingen/Peter Heller

© GDNÄ

Paul Mühlenhoff has headed the GDNÄ’s Student Program since 2012.

The student program has been part of the GDNÄ for a long time. The jGDNÄ, for students and early-career researchers, was founded just two years ago. How do the two groups fit together?
The transition between them is often seamless. Most members of the jGDNÄ have previously participated in one of the student programs. We organizers try to ensure a smooth transition from the younger group to the older one. The goal is for young people to remain with the GDNÄ in the long term and to build lasting networks with one another. The jGDNÄ is taking on more and more responsibility within the GDNÄ, including for the student program. The fact that forensic biologist Mark Benecke gave a presentation at a preparatory workshop is thanks to the jGDNÄ—the students were thrilled. 

So, is everything going well?
We definitely want to keep the student program going. But even very good things can get even better. Next time, we want to spread out the preparation over fewer dates and further optimize our collaboration with mentors. 

The next GDNÄ meeting will take place in Essen in 2028. What’s planned for the student program?
We’ll invite schools in Essen and within a 200-kilometer radius to participate. We also plan to once again invite talented students from “Jugend forscht” and other foundations. The jGDNÄ will once again play a key role in this. If at all possible, we want to offer student labs and field trips to research institutes again in 2028.

Professorin Eva-Maria Neher © Universität Göttingen/Peter Heller

© GDNÄ

Paul Mühlenhoff: His full-time position is as a senior teacher of biology and German at a high school in Bielefeld.

Martin Lohse awarded the Alexander von Humboldt Medal

Martin Lohse awarded the Alexander von Humboldt Medal

At the 134th Annual Meeting of the Society of German Naturalists and Physicians (GDNÄ) in Bremen, the Alexander von Humboldt Medal was awarded to Professor Martin Lohse. He receives the award in recognition of his outstanding commitment as President and a member of the Executive Board of the GDNÄ.

During the opening session of the 134th Assembly of the Society of German Naturalists and Physicians (GDNÄ) on 18 September 2026 at the Congress Centrum Bremen, Professor Martin Lohse was honoured with the Alexander von Humboldt Medal. As GDNÄ President from 2019 to 2022, Martin Lohse led the natural history society through the difficult years of the pandemic and was responsible for the 200th-anniversary celebrations in Leipzig. In his laudatory speech, GDNÄ Vice-President Heribert Hofer highlighted the award winner’s outstanding achievements: “Martin Lohse led the GDNÄ with great passion for four years and played a key role in the magnificent 200th-anniversary celebrations in Leipzig,” said Heribert Hofer.

Furthermore, the award winner had served the GDNÄ for many years as Vice-President and a member of the Executive Board. Martin Lohse is the editor of the GDNÄ commemorative publication in book form, *Wenn der Funke überspringt* (*When the Spark Ignites*), which Hofer recommended to the audience as a scientific overview accessible to a general audience. The laudator paid tribute to the outstanding academic career of the pharmacologist Martin Lohse and his services as Vice-President of the Leopoldina, for which he and a team of scientists drafted the politically decisive position paper ‘Clean Air’ in 2019.

At the start of the coronavirus pandemic, Martin Lohse, together with a team of scientists, published a widely acclaimed recommendation on how to tackle the crisis in stages. Looking back with the benefit of hindsight, it contained many sensible proposals, said Heribert Hofer. In his acceptance speech, the award winner recalled Lorenz Oken, the co-founder of the GDNÄ, who enriched science two hundred years ago with fresh, unconventional ideas.

Eröffnung der Büros Postplatz 1 © Paul Glaser

© MIKA-fotografie | Berlin

Martin Lohse with the certificate for the GDNÄ’s Alexander von Humboldt Prize. To his left: GDNÄ President Anke Kaysser-Pyzalla; to his right, GDNÄ Vice-President Professor Heribert Hofer (with the medal).

About the award

The Alexander von Humboldt Medal is awarded to distinguished individuals who have made an outstanding contribution to the further development of the Society of German Naturalists and Physicians. The medal commemorates the great naturalist and cosmopolitan Alexander von Humboldt (1769–1859), who played a decisive role in the early development of the GDNÄ. Since 2010, the medal has been awarded every two years.

Eröffnung der Büros Postplatz 1 © Paul Glaser

© MIKA-fotografie | Berlin

Professor Martin Lohse

About the recipient

Martin Lohse is Professor of Pharmacology and Toxicology, Managing Director of the Bavarian research company ISAR Bioscience in Martinsried, and a member of the Executive Board of the Society of German Naturalists and Physicians (GDNÄ). As its President from 2019 to 2022, he played a leading role in organising the Society’s 200th-anniversary celebrations in Leipzig, with the conference theme ‘Science in Pictures’ (PDF). He is the editor of the commemorative publication ‘Wenn der Funke überspringt’ (‘When the Spark Ignites’), published to mark the occasion. For his research into receptors, he received Germany’s highest scientific honour, the Leibniz Prize from the German Research Foundation, and many other awards.

Further reading

Students’ initiative: “Travelled to Bremen at their own expense”

“Travelled to Bremen at his own expense”

Franz Theodor Lenner (16) and Jonah Willy Winzig (16) travelled to the GDNÄ assembly in Bremen on their own initiative. Both are students at the private Villa Elisabeth Gymnasium in Wildau, near Berlin. The state-recognised school places great emphasis on STEM education in small classes.

How did you find out about the conference?
Our science teacher, Dr Stefan Bläß, told us about it. In 2024, Mr Bläß arranged for some pupils from our school to travel to the conference in Potsdam. He spoke so enthusiastically about it that we subsequently bought tickets to Bremen at our own expense and booked a hotel. There are a few other pupils from our school here as well.

What are you hoping to gain from the conference?
We’re hoping to gain insights into current scientific research and have lots of fruitful discussions with professors. Last night we already had the chance to speak to NASA’s former chief scientist, Thomas Zurbuchen. We asked him about nuclear propulsion systems for spacecraft and about water reserves on Jupiter’s moons, and he explained everything to us very clearly. We simply want to learn as much as possible.

And is that working out so far?
The conference is exceeding our expectations. As soon as we arrived, we were taken straight to Paul Mühlenhoff. He introduced us to everyone. All the people we’ve spoken to have been very friendly and willing to share information. We’ve also just received an invitation to the ‘Overseas Night’ on Saturday evening – we’re really looking forward to that. We’re taking part in the careers advice session at lunchtime today. Career-wise, we’d both like to go into medicine. Perhaps we’ll also pick up a few ideas for our planned entry in the ‘Jugend forscht’ competition. We’ve already got some ideas for Alzheimer’s research and new treatment approaches for diabetes patients.

Professorin Eva-Maria Neher © Universität Göttingen/Peter Heller

© GDNÄ

Franz Theodor Lenner (16) and Jonah Willy Winzig (16) travelled to the GDNÄ assembly in Bremen on their own initiative.