Does vegetation derived organic nitrogen fuel algal blooms in coastal waters of the Baltic Sea?

Información del proyecto

DINO_DON

Identificador del acuerdo de subvención: 659453

DOI

10.3030/659453

Proyecto cerrado

Fecha de la firma de la CE 23 Febrero 2015

Fecha de inicio 1 Enero 2016

Fecha de finalización 31 Diciembre 2017

Financiado con arreglo a

• EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions

Coste total

€ 191 325,60

Aportación de la UE

€ 191 325,60

Coordinado por

SUOMEN YMPARISTOKESKUS
Finland

Objetivo

Shallow coastal waters in the Baltic Sea, rich in organic matter, are threatened by toxic dinoflagellates blooms, which have deleterious effect on human health and aquatic life. The toxic Alexandrium ostenfeldii blooms in coastal waters where vegetation start to decompose in late summer and release dissolved organic nitrogen (DON). Dinoflagellates are potentially mixotrophic; they are photosynthetic and can use DON. However, the mixotrophic activity for Alexandrium in the Baltic Sea is unknown. The issue will be addressed using stable isotope 15N tracer experiments with enriched substrates from decaying vegetation and visualization of N incorporation pathway (direct uptake or via bacteria) in individual cells using NanoSIMS to determine the mixotrophic capacity of Alexandrium from different geographical sites in the Baltic Sea that differ in vegetation cover and type. A difference in adaptation to N sources may further support the genetic differentiation shown between Alexandrium populations in different areas of the Baltic Sea. The project will provide new understanding to nutritional physiological ecology of toxic dinoflagellates. Our aim is to understand if DON from decaying vegetation can be a source of N for toxic Alexandrium blooms in the Baltic Sea. By matching vegetation and habitat variables with Alexandrium bloom occurrence and mixotrophic activity we will develop a tool to identify potential bloom sites of Alexandrium in shallow coastal waters and to make recommendations for local management. If the application is accepted as IF the training in population genetics and spatial modelling using A. ostenfeldii as a model species, will be a key step for the development of the applicant in light of the research objectives towards modelling how metabolic activity differs with different populations.

Ámbito científico (EuroSciVoc)

• ciencias naturales › ciencias biológicas › microbiología › bacteriología
• ciencias naturales › ciencias de la tierra y ciencias ambientales conexas › ciencias ambientales
• ciencias naturales › ciencias biológicas › ecología
• ciencias naturales › ciencias químicas › química orgánica › aminas
• ciencias naturales › ciencias químicas › química analítica › espectrometría de masas

Programa(s)

• H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions PROGRAMA PRINCIPAL
  
• H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility
  

Tema(s)

• MSCA-IF-2014-EF - Marie Skłodowska-Curie Individual Fellowships (IF-EF)
  

Régimen de financiación

MSCA-IF-EF-ST - Standard EF

Convocatoria de propuestas

H2020-MSCA-IF-2014

Coordinador

SUOMEN YMPARISTOKESKUS

• Aportación neta de la UEn: € 191 325,60
• Dirección: LATOKARTANONKAARI 11 ; 00790 Helsinki ; Finlandia
• Región: Manner-Suomi › Helsinki-Uusimaa › Helsinki-Uusimaa
• Tipo de actividad: Research Organisations
• Coste total: € 191 325,60