Valero Soriano
Přírodovědecká fakulta JU
Hydrobiologický ústav BC AVČR
astolfo.valero [at] bc.cas.cz
Aquatic Biogeochemistry


I am enthusiastic about unveiling the redox reactions driving the dynamics of Fe and Mn, and their link with the biogeochemical cycle of nutrients (C, N, P, and S) and potentially toxic metals (As, Cr, V) in aquatic environments. For this, our laboratory applies diverse electrochemical and geochemical approaches able to quantify and identify ongoing redox reactions at the microscale (mm). I study such processes with the aim to understand past and present environments, as well as to improve management strategies necessary to maintain the water quality of natural and engineered reservoirs. 

Brief CV: 

I am a Venezuelan early researcher (Ph.D. student) at the newly formed Bioelectrochemistry Laboratory at the Soil and Water Research Infrastructure (BC, CAS). I have a background in:

  • Bachelor in Geochemistry (2016; Universidad Central de Venezuela, Venezuela)
  • Master in Sciences in Chemical Oceanography (2019; Universidade Federal do Rio Grande, Brazil)
Thesis name: 
The role of electroactive organisms in biomineralization reactions involving transition metals, nitrogen and humic substances under suboxic/anoxic conditions.

Entomologický ústav BC AVČR
maraiah205 [at] mail.com
+420 608375985
+675 72976484
Plant Defense (Ecology)

Plant Defense (Ecology) and Botany

Brief CV: 

Brief Background

I am from Papua New Guinea, a tropical country in South Pacific and located north of Australia. My research interests are in plant taxonomy and ecology, particularly on investigating how plants response to herbivorous insects' attack using leaf traits (physical and chemical) to defend themselves from their enemies as well as on understanding niche partitioning in plants using mechanisms of sympatric and allopatric speciation respectively.

To understand interactions between plants, vertebrates (bats, birds) and arthropods, our team (https://multitrophicinteractions.blog/projects/) is working on complex food web structures on global scale (latitudinal and vertical gradient studies).

Education and qualifications

Oct 2019─Present| PhD Student (Ecosystem Biology) ─Faculty of Science, University of South Bohemia: Ceske Budejovice, CZ.  Currently, supervised by Dr. Katerina Sam

2014─2017| Student (MSc) (Forestry) ─Papua New Guinea University of Technology: Lae, Morobe, PG

2010─2013| Student (BSc) (Forestry) ─Papua New Guinea University of Technology: Lae, Morobe, PG


  1. Institute of Entomology, Biology Center, Czech Academy of Science: Prague, Ceske Budejovice, CZ| (2019-09-19-Present)

  2. New Guinea Binatang Research Center: Madang, Madang, PG|  2018-03-08 to 2019-08-31| Botanist (Botany)

Invited positions

Indo-Pacific Conservation Alliance: Honolulu, Hawaii, US| 2016-09-11 to 2016-11-22| Student intern (MSc. Forestry) worked on plants (Botany) under Dr. Allen Allison (Bishop Museum, Zoology Department)

More information: 


  1. Jacobs, B., McKenna, K., Boronyak, L., Dem, F., Sui, S., Pomoh, K., Jimbudo, M., Maraia, H. (2020). Engaging Communities and Government in Biodiversity Conservation and Climate Adaptation in Papua New Guinea. In: Leal Filho W. (eds) Managing Climate Change Adaptation in the Pacific Region. Climate Change Management. Springer, Cham.
  2. Maraia, H., Orsak, L., Gideon, O & Okpul, T. (2019). An update on the distribution and morphology of Ixora amplexifolia (Ixoroideae, Rubiaceae) in Papua New Guinea. Phytotaxa, 409 (3): 172–178. https://doi.org/10.11646/phytotaxa.409.3.5
Netolicka 1174/16
Thesis name: 
The reciprocal effect of leaf traits and herbivorous insect communities along latitudinal and vertical forest gradients

Přírodovědecká fakulta JU
daska229 [at] gmail.com
landscape ecology, GIS

Temporal and spatial analyzes of former military training areas in Czech Republic for evaluation of changes in vegetation cover due to various types of management

Brief CV: 

2006 - 2009:  Faculty of Science, University of South Bohemia - B.Sc in Environmental Management

2009 - 2012:  Faculty of Science, University of South Bohemia - M.Sc in Ecology

2020 - present day:  Faculty of Science, University of South Bohemia - Ph.D. in Ecosystem biology


Thesis name: 
Temporal and spatial analyzes of former military training areas in Czech Republic for evaluation of changes in vegetation cover due to various types of management

Přírodovědecká fakulta JU
Hydrobiologický ústav BC AVČR
stanislav.jabinski [at] bc.cas.cz
Microbial biomarkers, stable isotopes

I am at the SoWa Institute a PhD student at the department of Ecosystem biology, University of South Bohemia in České Budějovice with the supervision of Dr. Travis Meador. I have long-term work experiences as a student assistant at the Institute MARUM (Center for Marine Environmental Science, Bremen, Germany) in the Workgroup of organic Geochemistry lead by Prof. Dr. Kai-Uwe Hinrichs. My main interests are reconstructing Paleoenvironments by applying microbial membrane biomarkers and analysing microbial activity and metabolism by applying Stable Isotope Probing (SIP) experiments. I have experience in analysing these biomarkers on different techniques, such as GC-FID/MS/IRMS, LC-QToF-MS, QQQ and FTICR-MS. Also developing new methods for analysing biomarkers with different techniques takes a big part of my working experience. My research focuses on determining and quantifying fungal C-turnover rates and mechanisms in subsurface ecosystems by applying dual stable isotope probing (δ13C + δ2H) analysing the membrane biomarkers.

Brief CV: 


09/2019 - present: PhD at the department of Ecosystem Biology at the University of South Bohemia in České Budějovice, Czech Republic

04/2019: MSc in Marine Geoscience University of Bremen in Bremen, Germany; MSc thesis: Development of a method to track microbial activity by ultra-high resolution mass spectrometry isotope pattern matching (Dez. 2018); Supervisors: Prof. Dr. Kai-Uwe Hinrichs, Dr. Gunter Wegener; Co supervisor: Dr. Julius Lipp

09/2016: BSc in Geoscience University of Bremen in Bremen, Germany; BSc Thesis: First insights of high resolution imaging of biomarker and elemental analysis of the sediments of the Gotland Basin (2016); Supervisors: Prof. Dr. Kai-Uwe Hinrichs, Prof. Dr. Gesine Mollenhauer; Co supervisor: Dr. Lars-Peter Wörmer

More information: 

Research Interests:
    • Paleoenvironmental reconstruction via membrane lipid biomarkers
    • Microbial lipid Biomarker
    • Stable isotope probing
    • Development of new analytical techniques
    • Fungal membrane lipids, activity and metabolism

    • https://soilwater.eu/laboratory/irms-laboratory/
    • Analysis of microbial membrane Lipids
    • Analysis of isotopes (Lipids, Gases)

Scientific contribution:
J.S. Lipp*, S. Jabinski, N. Gajendra, M. Könneke, K.-U. Hinrichs (2018). Advancing the scope of lipid-based stable isotope probing by mass spectrometric separation of lipid isotopologues (3 Cluster Conferenz, Berlin, poster presentation).

S. Jabinski*, J.S. Lipp N. Gajendra, M. Könneke, K.-U. Hinrichs (2018). Tracking of microbial activity by Ultra-high-MS Isotope Pattern Matching (Youmares, Oldenburg, poster,).

J.S. Lipp*, N. Gajendra, S. Jabinski, M. Könneke, F. Schubotz, K.-U. Hinrichs (2017). Stable Isotope Probing of Complex Lipids through Isotope Pattern Matching of Mass Spectra (IMOG, Florence, poster).

R.R. Adhikari*, V. B. Heuer, L. Wörmer, S. Jabinski, T. Hoshino, F. Inagaki, A. Kitte, J. Kallmeyer, K.-U. Hinrichs (2017). Subseafloor life and carbon cycling in the Bengal Fan (IODP Exp. 354) (IODP/ICDP Colloquium, Braunschweig, abstract)



Julius Eyiuche
Ústav půdní biologie BC AVČR
julius.nweze [at] bc.cas.cz
Environmental Microbiology

Industrial/Environmental Microbiology

Currently, we are working on millipede gut microbiome. Our interest in this area of research stems from the fact that millipedes play a major role in organic matter decomposition and nutrient recycling in terrestrial ecosystems. They are one of the most important detritivores consuming decaying wood, soil and leaf litter in various stages of decomposition. Like all other arthropods, millipedes host a diverse community of microbes in their guts, which is believed to aid in digestive processes and profoundly influence various aspects of their biology, yet the exact roles of this microbiome remain unclear. So, we using a combination of stable isotope probing (SIP), metagenomic, and metatranscriptomic techniques to understand the gut microbial community structure and functions.

Brief CV: 

Educational Background:

  • PhD Student at the University of South Bohemia, Czech Republic (07/2019 - date)
  • Exchange masters’ student at University of Tsukuba, Ibaraki, Japan (03/2016 - 02/2017).

  • Master’s Degree (M. Sc.) in Industrial Microbiology (with CGPA of 4.29), University of Nigeria, Nsukka (2014 - 2016).

  • National Youth Service Corps Certificate, Bayelsa State, Nigeria (2012 - 2013).

  • Bachelor Degree (B. Sc.) (Second Class Upper Division with CGPA of 4.14) in Microbiology, University of Nigeria, Nsukka (2007 - 2011).

  • Senior School Certificate Examination. Special Science School, Ukehe, Igbo Etiti L.G.A Enugu State (1998 - 2004).

  • First School Leaving Certificate. Community Primary School, Olido, Enugu Ezike, Enugu State (1992 - 1998).

M.Sc. and B.Sc. Research Topics:

  • Isolation and evaluation of thermotolerant-xylose fermenting yeasts for bioethanol production

  • Alpha-amylase production from fungi isolated from rot cassava

Research Interests

  • Microbial physiology, bioenergy/bioelectrochemistry, production of biochemicals, microbial interactions/community analysis, environmental microbiology, molecular biology and bioinformatics.

Published Research Papers

  • Nweze Julius Eyiuche, Shiho Asakawa, Takahiro Yamashita, Atsuo Ikeguchi, Yutaka Kitamura and Hiroshi Yokoyama (2017). Community analysis of biofilms on flame-oxidized stainless steel anodes in microbial fuel cells fed with different substrates. BMC Microbiology, 17:145.

  • Julius E. Nweze, Ifeanyi Ndubisi, Nnaemeka J. Onoyima et al. (2019). Isolation and evaluation of thermotolerant-xylose fermenting yeasts for bioethanol production. Biofuels (http://dx.doi.org/10.1080/17597269.2018.1564480)

  • Charles O. Nwuche, Yoshinori Murata, Julius E. Nweze, Ifeanyi A. Ndubuisi, Hide Ohmae, Masayoshi Saito, James C. Ogbonna (2018). Bioethanol production under multiple stress condition by a new acid and temperature tolerant Saccharomyces cerevisiae strain LC 269108 isolated from rotten fruits. Process Biochemistry.

  • Ifeanyi Ndubisi, Julius E. Nweze, Nnaemeka J. Onoyima et al. (2018). Ethanol production from cassava pulp by a newly isolated thermotolerant Pichia kudriavzevii LC375240. Energy and Power Engineering. 10(10); 457-474.

  • Justus Amuche Nweze, Josephine I. Okafor, Emeka Innocent Nweze and Julius Eyiuche Nweze (2016). Comparison of antimicrobial potential of honey samples from Apis mellifera and two stingless bees from Nsukka, Nigeria. J Pharmacogn Nat Prod 2: 124.

  • Justus Amuche Nweze, J. I. Okafor, Emeka I. Nweze and Julius Eyiuche Nweze (2017). Evaluation of physicochemical and antioxidant properties of two stingless bee honeys: a comparison with Apis mellifera honey from Nsukka, Nigeria. BMC Research Notes, 10:566.

International Conference/Symposium

  • Poster presentation at Ag-ESD International Symposium held at Tsukuba University Japan (Nov. 2016)

Internship/Industrial Training

  • Research assistant at National Agricultural and Food Research Organization (NARO), Tsukuba Ibaraki, Japan (01/08/2016-16/12/2016).

Awards and Scholarships

  • Certificate of participation at Ag-ESD International Symposium held at Tsukuba University Japan (Nov. 2016).

  • Outstanding poster award for a masters’ student for a poster presented at the Ag-ESD International Symposium held at Tsukuba University Japan (Nov. 2016).

  • Japan Student Services Organization (JASSO) scholarship (03/2016-02/2017).


More information: 

Special Skills and Laboratory Techniques

Microbiology skills: Aseptic and sterile techniques, optical microscopy, bacterial staining, plating methods (streak, spread, pour, replica), enumeration and identification of bacteria, use of biological safety cabinets, media and buffer preparation, use of selective media, and antibiotic assay (MIC).

Molecular Biology skills: DNA extraction, plasmid DNA preparation, RNA isolation and purification, restriction enzyme digests, PCR, agarose and acrylamide gel electrophoresis, primer design, Southern blotting, Western blotting and Northern blotting.

Spectroscopy skills: UV and visible spectroscopy

Data analysis skills: Using packages: SPSS, R, QIIME, MEGA 7 and Molecular Biology software (NCBI and associated tools, and databases).

Computer Skills: Highly proficient in the use of Microsoft packages, Windows, Internet research, Blogging and mobile web designing.

Languages: English (fluent), Igbo (fluent), Japanese (elementary) and French (elementary)

Personal Skills: Hard working, disciplined, learning attitude, ability to work in teams as well as independently, ability to manage stress, sincere and self-confident, possess positive attitude, strong communication and interpersonal skills.

Activities and Hobbies: Football, blogging, mobile website designing, programming, reading and writing, travelling, teaching, listening to music, church work and exercise.

Thesis name: 
Understanding the roles and functions of the millipede gut microbiome