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Poster (Scientific congresses and symposiums)
Exploring a Mediterranean mesozooplankton 13 year time-series.
Fullgrabe, Lovina; Richir, Jonathan; Batigny, Antoine et al.
201623rd Congress of Zoology
 

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Keywords :
Zooplankton; Global changes; Mediterranean Sea; Corsica; ZooImage
Abstract :
[en] Zooplankton plays diverse crucial roles within the marine ecosystem and can also be used as bio- indicator of climate changes since it is very sensitive to environmental changes. Therefore it is essential to consider long-term plankton series. Given the analysis of plankton samples is time- consuming, it requires an effective and rapid analytical method. We have used in this work a supervised learning approach adapted for the semi-automatic classification of digital images of the mesozooplankton of the Bay of Calvi (Corsica, France) by using the Zoo/PhytoImage software. Together with a 11-years long zooplankton time-series, a set of nine environmental variables were monitored in order to identify controlling factors and determine whether the communities were sensitive to global environmental changes. The main components of the mesozooplankton community were characterized by both seasonal and inter-annual variability. Additionally, variation of holoplankton and meroplankton differentiated one from each other. The holoplanktonic community could be split into two subgroups according to its variation in function of the environment: cladocerans and appendicularians, and to a lesser extent, copepods on one hand, and cnidarians, chaetognathes and thaliaceans, on the other hand. Regarding inter-annual variation, one year (2007) showed particularly low production of total zooplankton which was also the case for all the different holoplanktonic taxa. Accounting for that phenomenon were identified some potentially underlying environmental factors. Finally, although water temperature increased significantly over the last years along with the frequency of marine heat wave events, no evident change in the global zooplankton composition was observed yet.
Research center :
EcoNum UMONS, Océanologie ULiège, STARESO SAS
Disciplines :
Aquatic sciences & oceanology
Author, co-author :
Fullgrabe, Lovina ;  Université de Liège - ULiège > Océanologie
Richir, Jonathan  ;  Université de Liège > Département de Biologie, Ecologie et Evolution > Océanographie biologique
Batigny, Antoine;  U Mons
Leduc, Michele;  STARESO
Dauby, Patrick ;  Université de Liège > Département de Biologie, Ecologie et Evolution > Systématique et diversité animale
Lejeune, Pierre;  STARESO
Grosjean, Philippe;  U Mons
Gobert, Sylvie  ;  Université de Liège > Département de Biologie, Ecologie et Evolution > Océanographie biologique
Language :
English
Title :
Exploring a Mediterranean mesozooplankton 13 year time-series.
Publication date :
16 December 2016
Event name :
23rd Congress of Zoology
Event organizer :
Belgian and Dutch Royal Societies of Zoology
Event place :
Antwerp, Belgium
Event date :
16-17 december 2016
Audience :
International
Name of the research project :
STARECAPMED
Funders :
Collectivité Territoriale de Corse [FR]
Agence de l'eau Rhône Méditerranée Corse [FR]
Available on ORBi :
since 12 January 2017

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