Dr. rer.agr.

Jörn Gessner

+49 (0)30 64181 626
+49 (0)30 64181 626

Müggelseedamm 310, 12587 Berlin


We work on the prerequisites for the restoration and reestablishment of both the European and the Baltic sturgeon in their historic range – with a focus on the rivers Elbe and Oder. We combine restoration management and functional biology while studying behavior of early life phases to be related to physiological effects of the environment. The results help us to develop assessment tools for habitat suitability studies and to improve rearing conditions to increase fitness for survival.

In collaboration with our our geneticists we develop breeding plans and management tools to improve broodstock maintenance and restoration efficiency of the ex situ measures. The group contributes to the work on functional genomics as an emerging field.  The results are applied to assess the adaptive potential  of animals, their response to training and to verify effects of environmental adaptation in early life phases. The results are utilized to develop on site rearing technology in an EMFF project. Restoration guidance is under development in close cooperation with the respective Expert Groups under Helcom and in international panels such as the IUCN Sturgeon Specialist Group, ICES WGDIAD, the World Sturgeon Conservation Society (WSCS), but also in support of regional conventions such as Bern, Bucharest, Oslo-Paris and commission (ICPDR).  

Field studies on movement and habitat use in the wild, and recapture data of juvenile sturgeons are used to determine critical impacts and to develop counter measures: for instance modified gillnets for the inner coastal waters that can reduce by-catch of sturgeons by 98%. The in situ work also addresses the restoration options and effects for large rivers in close collaboration with our colleagues of the CCRD 3, exemplified in the assessment of management options on the River Havel. Joint work and transfer of the experiences in this work is taking place through collaborations with partners in France, the Netherlands, the Danube region, under the Helsinki Convention, the Bern Convention as well as through the World Sturgeon Conservation Society.

To increase public awareness, the project Wanderfisch – funded during the Science Year by the Federal Ministry of Education and Research – involved several groups in public releases at the river Oder.and the infrastructure established continues toprovide information and materials for schools and educational institutions,

Jörn Gessner's research group is affiliated with (Dept. 4) Biology and Ecology of Fishes as well as with (Dept. 5) Ecophysiology and Aquaculture.


Group members

Ivan Jaric

Monika Radominska

Janina Fuest

Marcus Ebert

 Jan Hallermann


This project will use whole genome-based approaches for the improvement of conservation and aquaculture in two sturgeon species: Atlantic sturgeon (Acipenser oxyrinchus) and Beluga (Huso huso).
Contact person
Jörn Gessner
Matthias Stöck
Sven Würtz
(Dept. 4) Biology and Ecology of Fishes
(Dept. 5) Ecophysiology and Aquaculture


Traveling from rivers to the sea and back is a major task in a sturgeon’s life and now he even takes children and young adults on his journey. By means of joint actions children explore their aquatic environment and learn important facts related to the use and protection of water bodies as well as to the linkage of ecosystems.
Contact person
Jörn Gessner
(Dept. 4) Biology and Ecology of Fishes



Christian Wolter; Dirk Bernotat; Jörn Gessner; Anika Brüning; Jan Lackemann; Johannes Radinger

Fachplanerische Bewertung der Mortalität von Fischen an Wasserkraftanlagen

(BfN-Skripten ; 561)

Kang Du; Matthias Stöck; Susanne Kneitz; Christophe Klopp; Joost M. Woltering; Mateus Contar Adolfi; Romain Feron; Dmitry Prokopov; Alexey Makunin; Ilya Kichigin; Cornelia Schmidt; Petra Fischer; Heiner Kuhl; Sven Wuertz; Jörn Gessner; Werner Kloas; Cédric Cabau; Carole Iampietro; Hugues Parrinello; Chad Tomlinson; Laurent Journot; John H. Postlethwait; Ingo Braasch; Vladimir Trifonov; Wesley C. Warren; Axel Meyer; Yann Guiguen; Manfred Schartl

The sterlet sturgeon genome sequence and the mechanisms of segmental rediploidization

Nature Ecology & Evolution. - 4(2020)6, S. 841-852


Jörn Gessner; Thomas Hein; Thomas Friedrich

Flagship species of the Danube - will there be sturgeons in the future?

Danube Watch. - (2019)1, S. 10-11
Jörn Gessner; Marie-Laure Acolas; Paolo Bronzi; Geraldine Lassalle


Data-limited diadromous species : a review of European status / Karen Wilson ; Lari Veneranta. - Copenhagen, 2019. - ch. 5, S. 65-76. - (ICES Cooperative Research Report ; 348)
Jörn Gessner; Gerd-Michael Arndt; Andrzej Kapusta; Sergey Shibayev; Alexey Gushin; Andrej Pilinkovskij; Justas Poviliunas; Ruta Medne; Santa Purvina; Meelis Tambets; Peter Rask Möller. Baltic Marine Environment Protection Commission

HELCOM-action plan for the protection and recovery of the Baltic sturgeon Acipenser oxyrinchus: action plan for the period of 2019 - 2029

94 S.
special issue editors: Joern Gessner; Tim Haxton; Leonardo Congiu; Molly A. H. Webb; Thomas Friedrich; Harald Rosenthal

Proceedings of the 8th International Symposium on Sturgeons (ISS 8): University of Natural Resources and Life Sciences (BOKU) Vienna, Austria, September 11-17, 2017


Thomas Friedrich; Jörn Gessner; Ralf Reinartz; Beate Striebel-Greiter

Pan-European action plan for sturgeons: multi species action plan for the Russian sturgeo complex (Acipenser gueldenstaedtii, A. persicus-colchicus), Adriatic sturgeon (Acipenser naccarii), Ship sturgeon (Acipenser nudiventris), ...

Strasbourg, 85 S.


Markus Venohr; Jörg Lewandowski; Werner Kloas; Hans-Peter Grossart; Mark O. Gessner; Christian Wolter; Jörn Geßner; Sven Wuertz

Schutz und Nutzung von Binnengewässern in Deutschland - Status Quo, Konflikte und politische Handlungsoptionen

IGB Policy Brief zur Bundestagswahl 2017

Simone D. Langhans; Jörn Geßner; Christian Wolter

Fließgewässer effizienter renaturieren: neue Planungshilfe optimiert Kosten und Nutzen für Biodiversität

KW Korrespondenz Wasserwirtschaft. - 10(2017)3, S. 151-156
Jörn Geßner; Gerd-Michael Arndt

Augen auf - Störe brauchen die Unterstützung der Fischer und Angler

Fischwaid. - (2017)2, S. 22
Jörn Geßner; Gerd-Michael Arndt

Augen auf für den Stör!: Urzeitfische brauchen die Unterstützung der Fischer und Angler

Rute & Rolle. - (2017)11, S. 81



Eds.: Harald Rosenthal; Joen Gessner. With contributions from ... Food and Agricultural Organization of the United Nations

National action plan for the conservation and restoration of the sturgeons of Turkey: (Acipenser gueldenstaedtii, A. nudiventris, A. stellatus, A. sturio, and Huso huso


spec. iss. eds.: Harald Rosenthal; Joern Gessner; Paolo Bronzi; Tim Haxton

Proceedings of the 7th International Symposium on Sturgeons


Ivan Jaric; Gorcin Cvijanovic; Marija Smederevac-Lalic; Jörn Gessner; Zoran Gacic; Mirjana Lenhardt

Sturgeon conservation and management cooperation in the Danube River basin

Resources of Danubian Region : the possibility of cooperation and utilization / eds.: Luka C. Popovic ... - Belgrad, 2013. - S. 172-180
Jörn Gessner

The global situation of sturgeons and resulting lessons for the Danube

Danube News. - 15(2013)28, S. 3-5


Jörn Gessner

Der Stör - ein lebendes Fossil, bald wieder in unseren Gewässern?

Mensch, Fisch! : Katalog zur Sonderausstellung des Landesmuseums Natur und Mensch Oldenburg vom 10. November 2012 bis zum 07. April 2013. - Oldenburg, 2012. - S. 125-130
Klement Tockner; Jörn Gessner; Martin Pusch; Christian Wolter

Domestizierte Ökosysteme und neuartige Lebensgemeinschaften

Wasserbezogene Anpassungsmaßnahmen an den Landschafts- und Klimawandel / Hrsg.: Uwe Grünewald ... - Stuttgart : Schweizerbart, 2012. - S. 33-42


Carsten Kühn; Gerd-Michael Arndt; Jörn Gessner

Erste kontrollierte Reproduktion des Baltischen Störs Acipenser oxyrinchus in Deutschland

Fischerei & [und] Fischmarkt in Mecklenburg-Vorpommern. - 11(2011)5, S. 40-45
Jörn Gessner; Gerd-Michael Arndt

Was stört den Stör?

Naturmagazin Berlin, Brandenburg. - 25(2011)4, S. 8-9
Jörn Gessner; Patrick Chévre; Eric Rochard

Remediation of the European Atlantic sturgeon (Acipenser sturio)

Progress in marine conservation in Europe 2009. - Bonn, 2011. - (BfN-Skripten / Bundesamt für Naturschutz ; 287). - S. 137-147
Jörn Gessner; Gerd-Michael Arndt; Frank Fredrich; Arne Ludwig; Frank Kirschbaum; Ryszard Bartel; Henning von Nordheim

Remediation of Atlantic sturgeon Acipenser oxyrinchus in the Oder River

Biology and conservation of the European sturgeon Acipenser sturio L. 1758 / Patrick Williot ... Jörn Gessner eds. - Berlin : Springer, 2011. - chapter 41, S. 539-559
Patrick Williot; Eric Rochard; Nathalie Desse-Berset; Jörn Gessner; Frank Kirschbaum

What is the future for the European sturgeon?

Biology and conservation of the European sturgeon Acipenser sturio L. 1758 / Patrick Williot ... Jörn Gessner eds. - Berlin : Springer, 2011. - chapter 49, S. 649-661
Philippe Jatteau; G. Castelnaud; E. Rochard; J. Gessner; M. Lepage

Tagging European and Atlantic sturgeons in Europe

Biology and conservation of the European sturgeon Acipenser sturio L. 1758 / Patrick Williot ... Jörn Gessner eds. - Berlin : Springer, 2011. - chapter 24, S. 349-355
Katharina Maschner; Jörn Gessner

Wiederaufbau ausgestorbener oder gefährdeter Arten in der deutschen Ostsee am Beispiel der Ostseekegelrobbe (Halichoerus grypus balticus) und dem Ostseestör (Acipenser oxyrinchus)

Natur und Landschaft. - 86(2011)9/10, S. 451-457
Jörn Gessner; Frank Fredrich; Gerd-Michael Arndt

Arterhaltung und Wiedereinbürgerung der heimischen Störe (Acipenser sturio und Acipenser oxyrinchus) im Nord- und Ostseeeinzugsgebiet

Gebietsfremde und einheimische Fischarten in Fließ- und Stillgewässern. - (Fischerei und Naturschutz). - 13(2011), S. 25-36
Jörn Gessner; Wolfgang Schütz

Wiedereinbürgerung des Europäischen Störs in der Oste

Wasser und Abfall. - 13(2011)1-2, S. 17-21


Gerd-Michael Arndt; Jörn Gessner; Eckhard Anders

Aktueller Stand und Perspektive für die Wiedereinbürgerung der Störe in Deutschland und Mecklenburg-Vorpommern

Fischerei & [und] Fischmarkt in Mecklenburg-Vorpommern. - 10(2010)3, S. 27-37
Jörn Gessner; Frank Fredrich; Gerd-Michael Arndt; Henning von Nordheim

Arterhaltung und Wiedereinbürgerungsversuche für die atlantischen Störe (Acipenser sturio and A. oxyrinchus) im Nord- und Ostseeeinzugsgebiet

Natur und Landschaft. - 85(2010)12, S. 514-519


Jörn Gessner; Frank Fredrich; Patrick Williot; Frank Kirschbaum

Preparatory measures and initial release as a prerequsite for the remediation of the European sturgeon, Acipenser sturio, in Germany

Bulletin of fish biology. - 11(2009)1/2, S. 21-36
Jörn Gessner; Frank Fredrich; Blandyna Migdalska; Jozef Domagala; Ryszard Bartel

Untersuchungen zu Wanderbewegungen juveniler Störe (Acipenser oxyrinchus) im Oder- (Odra-) Einzugsgebiet

Nationalpark-Jahrbuch Unteres Odertal 2008(2009), S. 46-57
Jörn Gessner

Gdzie jesiotrom bedzie dobrze?

Komunikaty rybackie. - (2009)6, S. 30-31
Frank Kirschbaum; Frank Fredrich; Patrick Williot; Jörn Gessner

Wiedereinbürgerung des Europäischen Störs (Acipenser sturio) in Deutschland

Naturschutz und Landschaftspflege in Brandenburg. - 18(2009)3, S. 76-82
Michael Tautenhahn; Jörn Gessner

Die Rückkehr des Ostseestörs

Angermünder Heimatkalender. - 2009. - S. 213-218


Jörn Gessner; Gerd-Michael Arndt; Eckhard Anders; Sven Würtz; Ryszard Bartel; Boguslaw Zdanowski

The development of a broodstock and rearing of Acipenser oxyrhynchus between 1998 and 2007, as a prerequisite for stocking the tributaries of the Baltic Sea

Actual status and active protection of sturgeon fish populations endangered by extinction. - Olsztyn, 2008. - S. 19-30
Jörn Gessner; Gerd-Michael Arndt

Modification of gillnets and the impact on the bycatch of sturgeon effectiveness for target species

Actual status and active protection of sturgeon fish populations endangered by extinction. - Olsztyn, 2008. - S. 31-41
Gerd-Michael Arndt; Jörn Gessner; Ryszard Bartel

Current status of the spawning habitat of Baltic sturgeon in the Oder River drainage area

Actual status and active protection of sturgeon fish populations endangered by extinction. - Olsztyn, 2008. - S. 43-53
Jörn Gessner; Blandyna Midgalska; Michael Tautenhahn; Józef Domagala; Frank Fredrich; Ryszard Bartel

Migration analysis of juvenile sturgeons (Acipenser oxyrhynchus) in the Odra River catchment as determined by catch data

Actual status and active protection of sturgeon fish populations endangered by extinction. - Olsztyn, 2008. - S. 151-162
Jörn Gessner; Gerd-Michael Arndt; Eckhard Anders; Frank Kirschbaum; Ryszard Bartel; Boguslaw Zdanowski

Sturgeon remediation in the tributaries to the Baltic Sea

Passages for fish : overcoming barriers for large migratory fish / ed. by H. Rosenthal ... - Norderstedt, 2008. - S. 39-49
Jörn Gessner; Eric Rochard

Noodplan voor de steur

Visionair. - 3(2008)10, S. 21-23
Frank Fredrich; Andrzej Kapusta; Markus Ebert; Arkadiusz Duda; Jörn Gessner

Migratory behavior of young sturgeon, Acipenser oxyrinchus Mitchill, in the Oder river drainage

Archives of Polish fisheries. - 16(2008)2, S. 105-117




Jörn Gessner

Acipenser oxyrinchus MITCHILL, 1815

Das europäische Schutzgebietssystem Natura 2000 / zsgest. und bearb. von Barbara Petersen. - (Schriftenreihe für Landschaftspflege und Naturschutz ; 69,2) - chapter 10.1. - S. 205-210
Markus Diekmann; Jörn Gessner; Arne Ludwig

Weltweiter Rückgang der Aalbestände

Fischer und Teichwirt. - 56(2005)11, S. 406-408


J. Gessner; G.-M. Arndt; E. Anders; F. Kirschbaum

Arterhaltung und Wiedereinbürgerung der Atlantischen Störe (Acipenser sturio und A. oxyrinchus) in Nord- und Ostsee

Handbuch angewandte Limnologie / Hupfer ; Calmano ; Klapper ; Wilken. - Weinheim : Wiley, 2004. - 19. Erg.-Lfg. 7/04. - Kap. VI-3.6, S. 3-14


Jörn Gessner; Gerd-Michael Arndt

Der Stör - ein Beispiel für die besondere Gefährdung von Wanderfischarten

Fische und Fischerei in Ost- und Nordsee / hrsg. von Harald Benke. - (Meer und Museum ; 17), S. 167-175


S. Würtz; J. Gessner; F. Kirschbaum; W. Kloas

First identification of IGF-I mRNA in the genus Acipenser and its quantification in maturing gonads

Proceedings of the 21st Conference of European Comparative Endocrinologists, Bonn (Germany), August 26-30, 2002. - Bologna : Monduzzi Ed., 2002. - S. 253-257


G. M. Arndt; J. Gessner; E. Anders; S. Spratte; J. Filipiak; L. Debus; K. Skora

Predominance of exotic and introduced species among sturgeons captured from the Baltic and North Seas and their watersheds, 1981-1999

Boletín / Instituto Espanol de Oceanografía. - 16(2000)1-4, S. 29-36
J. Gessner

Reasons for the decline of Acipenser sturio L., 1758 in central Europe, and attempts at its restoration

Boletín / Instituto Espanol de Oceanografía. - 16(2000)1-4, S. 117-126
J. Gessner; R. Bartel

Sturgeon spawning grounds in the Odra River tributaries

Boletín / Instituto Espanol de Oceanografía. - 16(2000)1-4, S. 127-137


Frank Kirschbaum; Manfred Wirth; Jörn Gessner; Angelika Krüger; Neculei Patriche; Patrick Williot; Roland Billard

Les caracteristiques physico-chimiques de caviars d'esturgeons d'elevage et sauvages

Comptes rendus de l'Academie d'Agriculture de France. - 85(1999)8, S. 85-96

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