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MARIS SIGNED

Mixotrophy among small marine phytoflagellates – prevalence and impact on prokaryotic communities

Total Cost €

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EC-Contrib. €

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Partnership

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 Outcomes and results

 MARIS project word cloud

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small    responsible    food    le    uuml    phytoflagellates    fisheries    exchange    micro    predictions    unknown    fraction    phytoplankton    hansen    employed    despite    ocean    optimal    break    fe    flawed    restart    cyanobacteria    primary    researcher    international    misleading    microbial    anderson    marine    groups    mixotrophy    shifts    anticipated    outcome    collaborators    prof    organic    coastal    global    identity    health    thought    phototrophy    additionally    understudied    scientific    community    mixotrophic    culture    regulation    career    fact    bacterial    bacterivorous    prey    zooplankton    prokaryotic    considering    models    environmental    trophic    photosynthesis    lacking    consistent    expertise    flow    analyze    strict    unicellular    season    overwhelmingly    climate    acute    predicting    j    successful    picture    ecosystem    diversity    supervisor    maternity    predator    web    dr    balance    strategy    abundance    excellently    largely    potentially    combine    relevance    energy    msp    bacterivory    basic    scanlan    shift    productivity    fuses    dichotomy    interactions    protist    rgens    influence   

Project "MARIS" data sheet

The following table provides information about the project.

Coordinator		 KOBENHAVNS UNIVERSITET 

Organization address
address: NORREGADE 10
city: KOBENHAVN
postcode: 1165
website: www.ku.dk

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.
 Coordinator Country Denmark [DK]
 Project website https://www.researchgate.net/project/Bacterivory-in-mixotrophic-small-phytoflagellates
 Total cost 212˙194 €
 EC max contribution 212˙194 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2014
 Funding Scheme MSCA-IF-EF-CAR
 Starting year 2015
 Duration (year-month-day) from 2015-05-01   to  2017-04-30

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    KOBENHAVNS UNIVERSITET DK (KOBENHAVN) coordinator 212˙194.00

Map

 Project objective

Mixotrophy, i.e. the use of photosynthesis and prey uptake for growth, is increasingly recognized as a major trophic strategy for small (≤ 20 µm) phytoflagellates, which are responsible for a significant fraction of global primary production. In fact, marine primary production in many areas is now thought to be supported by organic P and Fe derived from prey. Despite this, a consistent picture of the overall relevance of bacterivory in open ocean and coastal mixotrophic small phytoflagellates (MSP) is lacking. Additionally, a strict dichotomy between `phytoplankton´ and `zooplankton´ is still overwhelmingly employed in models predicting the flow of matter and energy through marine systems, leading to potentially flawed and misleading predictions on ecosystem productivity and the health of global fisheries. This is especially significant when considering that anticipated environmental changes related to climate change are expected to shift the phototrophy/mixotrophy balance, with largely unknown consequences. The present study will combine culture and field work to 1) determine how shifts in environmental conditions related to e.g. season, influence coastal MSP abundance, identity and bacterivorous impact on the whole prokaryotic community, and on specific prokaryotic groups, such as unicellular cyanobacteria; and 2) analyze the importance and basic regulation of bacterial uptake for understudied coastal MSP. The proposed project excellently fuses the expertise areas of the experienced researcher, Dr. Anderson (bacterivory and predator-prey interactions), with the supervisor, Prof. Hansen (mixotrophic phytoflagellates) and the international collaborators, Prof. Jürgens (protist diversity and microbial food web interactions) and Prof. Scanlan (unicellular cyanobacteria), leading to an optimal exchange of knowledge for a successful project outcome. It will additionally restart and further the promising scientific career of Dr. Anderson after her maternity break.

 Publications

year authors and title journal last update
List of publications.
2017 Ruth Anderson, Klaus Jürgens, Per J. Hansen
Mixotrophic Phytoflagellate Bacterivory Field Measurements Strongly Biased by Standard Approaches: A Case Study
published pages: , ISSN: 1664-302X, DOI: 10.3389/fmicb.2017.01398 		Frontiers in Microbiology 8 2019-06-14

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