Phd Position in Plankton Ecophysiology - Bremerhaven, Deutschland - Alfred-Wegener-Institut für Polar- und Meeresforschung

Alfred-Wegener-Institut für Polar- und Meeresforschung
Alfred-Wegener-Institut für Polar- und Meeresforschung
Geprüftes Unternehmen
Bremerhaven, Deutschland

vor 2 Wochen

Lena Wagner

Geschrieben von:

Lena Wagner

beBee Recruiter
Beschreibung

The Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research (AWI) is a member of the Helmholtz Association (HGF) and funded by federal and state government.

AWI focuses on polar and marine research in a variety of disciplines such as biology, oceanography, geology, geochemistry and geophysics thus allowing multidisciplinary approaches to scientific goals.


  • PhD position in Plankton Ecophysiology (M/F/d)

Background
In addition to macronutrients (N, P, Si) and trace metals (Fe, Zn), Vitamin B12 is required by >90% of all surveyed harmful algal bloom (HAB) forming phytoplankton species, including
_Pseudo-nitzschia _sp. Furthermore bloom dynamics of some HABs can be correlated with the availability of B12.


Since eukaryotes cannot produce B12, these algae need to take up exogenous B12, produced only by some prokaryotes, mainly heterotrophic bacteria.

A handful of studies have looked at the relationship of algae and bacteria and found that in some cases the addition of the latter could elevate B12 limitation in auxotrophic phytoplankton species.

Little is known about the impacts of B12 on growth and DA production of the ecologically diatom
_Pseudo-nitzschia sp_.. Some studies have shown that domoic acid production in

_Pseudo-nitzschia_ depends on the bacterial community in its phycosphere, and there is evidence that some bacteria may consume domoic acid.

The relationship between bacteria, domoic acid production and B12, however, is unknown. The aim of this project is to 1) map the distribution of
_Pseudonitzschia sp_, toxins and vitamin B12 in Arctic and Antarctic waters, 2) assess the importance of B12 on growth and toxicity of
_Pseudonitzschia sp_ and 3) investigate B12 as a currency of interaction between
_Pseudonitzschia sp_ and its microbiome.


Tasks

  • Shipboard expedition in the Arctic and Antarctic, assessing distribution patterns of _Pseudonitzschia _sp., associated toxins and Bvitamins
  • Culture work with different strains of _Pseudonitzschia _sp_._ and vitamin B1
  • Coculturing of heterotrophic bacteria with _Pseudonitzschia _sp_._
  • Establishing methods for measuring cellular B12 content

Requirements:


  • Master or comparable degree in biology, marine science/biology or environmental sciences
  • Experience cultivating marine plankton, applied methods in plant physiology and/or in sea going expeditions
  • Participation in shipbased research expeditions to the Arctic and/or Antarctic
  • Good English language skills (spoken and written).

Additional skills and knowledge

  • Analytical experience working with nutrients /trace metals/phycotoxins
  • Knowledge of basic molekular techniques (transcriptomics/metabolomics)
  • Experience working with radioisotopes

Further Information
Please contact
This position is limited to 3 years. The salary will be paid in accordance with the Collective Agreement for the Public Service of the Federation (Tarifvertrag des öffentlichen Dienstes, TVöD Bund), up to salary level

13 (66%). The place of employment will be

Bremerhaven.

POLMAR or another graduate school and thus benefit from a comprehensive training program and extensive support measures.


The AWI is characterised by
- our scientific success - excellent research
- collaboration and cooperation - intra-institute, national and international, interdisciplinary
- opportunities to develop - on the job and towards other positions
- an international environment - everyday contacts with people from all over the world
- flexible working hours and the possibility of mobile working up to 50% of regular working hours

  • Health promotion and company fitness with qualitrain
- support services and a culture of reconciling work and family

  • Occupational pension provision (VBL)
  • Jobticket
Equal opportunities are an integral part of our personnel policy.

The AWI aims to increase the number of employees who are women, and therefore strongly encourages qualified women to apply.

Applicants with disabilities will be given preference when equal qualifications are present.

The AWI fosters the compatibility of work and family in various ways and has received a number of awards as a result of this engagement.


April 15

th

2023, exclusively online.

Reference number: 23/67/G/Bio-b
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