Genyffer TROINA

Genyffer Troina

Vrije Universiteit Brussel
Room F8.63
Pleinlaan 2
1050 Brussels | Belgium

Phone: 
+32-2-6293271

PROJECT TITLE:

The trophic interactions and ecological role of cetaceans in the Brazilian offshore waters

PROJECT SUMMARY:

Understanding the trophic relationships among cetaceans and the other food web components is essential in order to assess these predators’ ecological functions. Using carbon and nitrogen stable isotopes we intend to characterize the main pathways of energy and matter in the pelagic stratum from primary producer to higher trophic levels. We measured δ13C and δ15N in skin tissues of odontocetes (Families Delphinidae and Physeteridae) along Brazilian offshore waters. Stable isotope values at the base of the food web (Particulate Organic Matter and zooplankton) will be used to understand patterns in isotopic variability in top predators and how shifts in basal isotopic composition are propagated into top predators. Our analysis will aid to the understanding on the trophic dynamics of the cetaceans and how they interact with the surrounding environment and organisms.

 
FIELD SITES:
South west Atlantic Ocean, Brazilian outer continental shelf and slope, tropical and subtropical waters
 
KEYWORDS:
Cetaceans, odontocetes, stable isotopes, food webs, δ13C and δ15N
 
SUPERVISORS:
Frank Dehairs
Mark Elskens
Eduardo Resende Secchi (Unversidade Federal do Rio Grande – FURG, Brazil)
Silvina Botta (Unversidade Federal do Rio Grande – FURG, Brazil)
 
LINKS:
Research Gate: https://www.researchgate.net/profile/Genyffer_Troina