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Gerdhard Leonard Jessen Reyes

Professor

University Austral of Chile

Valdivia, Chile

Ecologia microbiana; geomicrobiología de ecosistemas extremos naturales e impactados; Biogeoquimica bentonica; Hipoxia ambiental y eutroficacion

Marine Microbiology, UNIVERSITÄT BREMEN. Alemania, 2015

Académico Full Time

UNIVERSIDAD AUSTRAL DE CHILE

Ciencias

Valdivia, Chile

2018 - A la fecha

Alumno ayudante

Universidad Catolica de la Santisima Concepcion

Chile

2002 - 2002
Alumno ayudante

Universidad Catolica de la Santisima Concepcion

Chile

2002 - 2002
Alumno ayudante

Universidad del Desarrollo

Chile

2003 - 2003
Asistente de investigación

Universidad de Concepción

Chile

2005 - 2005
Asistente de investigación

Universidad de Concepción

Chile

2008 - 2010
Asistente de investigación

Universidad de Concepción

Chile

2010 - 2010
Tutor

Max Planck Institute for Marine Microbiology

Alemania

2012 - 2012
Supervisor

Max Planck Institute for Marine Microbiology

Alemania

2011 - 2011
Supervisor

Max Planck Institute for Marine Microbiology

Alemania

2013 - 2013
Postdoctorante

Max Planck Institute for Marine Microbiology

Alemania

2016 - 2016
Postdoctorante Full Time

University of Toronto

Toronto, Canada

2017 - 2018
Profesor Full Time

Universidad Austral de Chile

Valdivia, Chile

2018 - A la fecha

Tutoring and co-tutoring of numerous undergrad and MSc thesis

Reviewer for projects in the framework of the school science fair in Valdivia (Chile)
Once upon a time... Project founded by the German Federal Ministry of Education and Research. The project’s aim is to communicate science by creating short stories. The audience for these stories is adults with connection to children from different countries. https://www.marum.de/Binaries/Binary15164/Once-upon-a-time-OUAT2017.pdf
(Radio Interview) "Junge Forscher der marinen Mikrobiologie in Bremen" Happy Hour Radiostation Bremen 4\\
(Radio Interview) "Materia expuesta" Radiostation UACh\\
Appearance in the (TV Documentary) Cazadores de Ciencia (Science hunters). TV show on the Chilean National TV about science where one week fieldwork in Mocha Island was filmed and presented in the format of documentary (see Jessen et al., 2011 for details regarding the scientific findings) http://oceanografia.udec.cl/news/english/research-at-isla-mocha
(Lectures for elementary schools) in the framework of 1000 Científicos, 1000 aulas (1000 scientists, 1000 classrooms). A series of scientific lectures were given to scholars from different ages with the aim of promoting understanding of science in kids and teachers http://1000cientificos.explora.cl (in Spanish)

Workshop attendance, Water management (Brazil)

Royal Society of Canada

Canada, 2018

Royal Society of Canada -- Academy of Sciences Leopoldina. One of the two young scientists selected in Canada
Teaching Award - Best teaching assistant

International Max Planck Research School of Marine Microbiology

Alemania, 2015

Teaching award granted for the best teaching assistant of the year
PhD scholarship

ANID

Chile, 2010

PhD scholarship (Becas Chile)
MSc scholarship

ANID

Chile, 2006

MSc scholarship


Complex organic matter degradation by secondary consumers in chemolithoautotrophy-based subsurface geothermal ecosystems Paul, Raegan; Rogers, Timothy J. J.; Fullerton, Kate M. M.; Selci, Matteo; Cascone, Martina; Stokes, Murray H. H.; Steen, Andrew D. D.; de Moor, J. Maarten; Chiodi, Agostina; Stefansson, Andri; Halldorsson, Saemundur A.; Ramirez, Carlos J. J.; Jessen, Gerdhard L. L.; Barry, Peter H. H.; Cordone, Angelina; Giovannelli, Donato; Lloyd, Karen G. G. Article ISI PLOS ONE (2023)
Ultrahigh-precision noble gas isotope analyses reveal pervasive subsurface fractionation in hydrothermal systems Bekaert, David V.; Barry, Peter H.; Broadley, Michael W.; Byrne, David J.; Marty, Bernard; Ramirez, Carlos J.; de Moor, J. Maarten; Rodriguez, Alejandro; Hudak, Michael R.; Subhas, Adam V.; Halldorsson, Saemundur A.; Stefansson, Andri; Caracausi, Antonio; Lloyd, Karen G.; Giovannelli, Donato; Seltzer, Alan M. Article ISI SCIENCE ADVANCES (2023)
Alum Addition Triggers Hypoxia in an Engineered Pit Lake Jessen, Gerdhard L.; Chen, Lin-Xing; Mori, Jiro F.; Nelson, Tara E. Colenbrander; Slater, Gregory F.; Lindsay, Matthew B. J.; Banfield, Jillian F.; Warren, Lesley A. Article ISI MICROORGANISMS (2022)
Chemolithoautotroph distributions across the subsurface of a convergent margin Rogers, Timothy J.; Buongiorno, Joy; Jessen, Gerdhard L.; Schrenk, Matthew O.; Fordyce, James A.; de Moor, J. Maarten; Ramirez, Carlos J.; Barry, Peter H.; Yucel, Mustafa; Selci, Matteo; Cordone, Angela; Giovannelli, Donato; Lloyd, Karen G. Article ISI ISME JOURNAL (2022)
Sampling across large-scale geological gradients to study geosphere-biosphere interactions Giovannelli, Donato; Barry, Peter H.; de Moor, J. Maarten; Jessen, Gerdhard L.; Schrenk, Matthew O.; Lloyd, Karen G. Article ISI FRONTIERS IN MICROBIOLOGY (2022)
The Helium and Carbon Isotope Characteristics of the Andean Convergent Margin Barry, P. H.; De Moor, J. M.; Chiodi, A.; Aguilera, F.; Hudak, M. R.; Bekaert, D. V.; Turner, S. J.; Curtice, J.; Seltzer, A. M.; Jessen, G. L.; Osses, E.; Blamey, J. M.; Amenabar, M. J.; Selci, M.; Cascone, M.; Bastianoni, A.; Nakagawa, M.; Filipovich, R.; Bustos, E.; Schrenk, M. O.; Buongiorno, J.; Ramirez, C. J.; Rogers, T. J.; Lloyd, K. G.; Giovannelli, D. Article ISI FRONTIERS IN EARTH SCIENCE (2022)
Effect of tectonic processes on biosphere-geosphere feedbacks across a convergent margin Fullerton, Katherine M.; Schrenk, Matthew O.; Yucel, Mustafa; Manini, Elena; Basili, Marco; Rogers, Timothy J.; Fattorini, Daniele; Di Carlo, Marta; D'Errico, Giuseppe; Regoli, Francesco; Nakagawa, Mayuko; Vetriani, Costantino; Smedile, Francesco; Ramirez, Carlos; Miller, Heather; Morrison, Shaunna M.; Buongiorno, Joy; Jessen, Gerdhard L.; Steen, Andrew D.; Martinez, Maria; de Moor, J. Maarten; Barry, Peter H.; Giovannelli, Donato; Lloyd, Karen G. Article ISI NATURE GEOSCIENCE (2021)
Isotopic and Chemical Assessment of the Dynamics of Methane Sources and Microbial Cycling during Early Development of an Oil Sands Pit Lake Slater, Greg F.; Goad, Corey A.; Lindsay, Matthew B. J.; Mumford, Kevin G.; Colenbrander Nelson, Tara E.; Brady, Allyson L.; Jessen, Gerdhard L.; Warren, Lesley A. Article ISI MICROORGANISMS (2021)
Microbial Succession Signals the Initiation of Acidification in Mining Wastewaters Camacho, David; Jessen, Gerdhard L.; Mori, Jiro F.; Apte, Simon C.; Jarolimek, Chad V.; Warren, Lesley A. Article ISI MINE WATER AND THE ENVIRONMENT (2020)
Putative Mixotrophic Nitrifying-Denitrifying Gammaproteobacteria Implicated in Nitrogen Cycling Within the Ammonia/Oxygen Transition Zone of an Oil Sands Pit Lake Mori, Jiro F.; Chen, Lin-Xing; Jessen, Gerdhard L.; Rudderham, Sarah B.; McBeth, Joyce M.; Lindsay, Matthew B. J.; Slater, Gregory F.; Banfield, Jillian F.; Warren, Lesley A. Article ISI SCOPUS FRONTIERS IN MICROBIOLOGY (2019)
The Potential Role of Halothiobacillus spp. in Sulfur Oxidation and Acid Generation in Circum-Neutral Mine Tailings Reservoirs Whaley-Martin, K; Jessen, GL; Nelson, TC; Mori, JF; Apte, S; Jarolimek, C; Warren, LA Article ISI SCOPUS FRONTIERS IN MICROBIOLOGY (2019)
Wide Distribution of Phage That Infect Freshwater SAR11 Bacteria Chen, Lin-Xing; Zhao, Yanlin; McMahon, Katherine D.; Mori, Jiro F.; Jessen, Gerdhard L.; Nelson, Tara Colenbrander; Warren, Lesley A.; Banfield, Jillian F. Article ISI SCOPUS MSYSTEMS (2019)
Hypoxia causes preservation of labile organic matter and changes seafloor microbial community composition (Black Sea) Jessen, Gerdhard L. ; Lichtschlag, Anna; Ramette, Alban; Pantoja, Silvio; Rossel, Pamela E.; Schubert, Carsten J.; Struck, Ulrich; Boetius, Antje Article ISI SCOPUS Science Advances (2017)
Distribution and Composition of Thiotrophic Mats in the Hypoxic Zone of the Black Sea (150-170 m Water Depth, Crimea Margin) Jessen, Gerdhard L.; Lichtschlag, Anna; Struck, Ulrich; Boetius, Antje Article ISI FRONTIERS IN MICROBIOLOGY (2016)
Effects of fluctuating hypoxia on benthic oxygen consumption in the Black Sea (Crimean shelf) Lichtschlag, A.; Donis, D.; Janssen, F.; Jessen, G. L. ; Holtappels, M.; Wenzhoefer, F.; Mazlumyan, S.; Sergeeva, N.; Waldmann, C.; Boetius, A. Article ISI BIOGEOSCIENCES (2015)
A single-cell sequencing approach to the classification of large, vacuolated sulfur bacteria Salman V; Amann R; Girnth AC; Polerecky L; Bailey JV; Hogslund, S; Jessen G; Pantoja S.; Schulz-Vogt, HN Article ISI SCOPUS SYSTEMATIC AND APPLIED MICROBIOLOGY (2011)
Chemosynthetic trophic support for the benthic community at an intertidal cold seep site at Mocha Island off central Chile Sellanes J.; Zapata-Hernandez, G; Pantoja S.; Jessen, GL Article ISI SCOPUS Estuarine, Coastal and Shelf Science (2011)
Methane in shallow cold seeps at Mocha Island off central Chile Jessen, GL; Pantoja S.; Gutierrez MA; Quiñones, RA; González RR; Sellanes J.; Kellermann MY; Hinrichs, KU Article ISI SCOPUS Continental Shelf Research (2011)
Aerobic and anaerobic enzymatic activity and allometric scaling of the deep benthic polychaete Hyalinoecia artifex (Polychaeta: Onuphidae) Jessen, GL; Quiñones, RA; González RR Article ISI SCOPUS JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM (2009)
Aerobic and anaerobic metabolism of Paraprionospio pinnata (Polychaeta : Spionidae) in central Chile Quiroga, E.; Quiñones, RA; González RR; Gallardo VA; Jessen G Article ISI SCOPUS JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM (2007)
Living in the oxygen minimum zone: A metabolic perspective Quiñones, Renato A; González, Rodrigo R; Levipan, Héctor; Gerdhard, Jessen; Gutiérrez, Marcelo H. Article ISI SCIELO GAYANA (2006)


Center for Oceanographic Research in the eastern South Pacific (COPAS Coastal) Fernández Ibáñez, Camila Proyecto (2021)
Emergent contaminants in the coastal ocean: The role of priming on natural bioremediation in marine sediments} Pantoja Gutierrez, Silvio; Gerdhard L Jessen; Gutiérrez, Marcelo H.; Aranda, Mario. Proyecto (2020)
The unseen lotic ecosystem: geobiological interactions across and beyond the Andean convergent margin Gerdhard L Jessen Proyecto (2020)
Microbial Initiative in Low Oxygen areas off Concepción and Oregon Gordon and Betty Moore Foundation Proyecto 2009-2011 Personal técnico y/o de apoyo
The Role of Methane in the Coastal Ocean as an Alternative Carbon Fuel for the Microbial Community and Secondary Production FONDECYT (1080623) Proyecto 2008-2011 Personal técnico y/o de apoyo
Centro de Investigación Oceanográfica en el Pacífico Sur-Oriental (FONDAP - COPAS) FONDAP (15010007) Proyecto 2002-2012 Personal técnico y/o de apoyo