Marianna Giannoulaki

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Acoustic and satellite environmental data as well as bathymetry data were used to model the presence of anchovy, Engraulis encrasicolus during early summer in the northern Aegean Sea (Eastern Mediterranean). Generalized Additive Models (GAMs) were used for modelling and subsequently applied in a predictive mode to identify those areas in the Greek Seas and(More)
Despite the importance of the recruitment process for small pelagic fish and the high economic importance of European sardine (Sardina pilchardus, Walbaum 1792) in the Mediterranean Sea, knowledge on the distribution and environmental characteristics of its nursery grounds is very limited. In the present study, we used pelagic trawl data collected during(More)
The invasive ctenophore Mnemiopsis leidyi was accidentally introduced into the Black Sea in the early 1980s and it was first sighted in the Aegean Sea (Eastern Mediterranean) in the early 1990s. This article presents a first attempt to develop a predictive spatial model based on M. leidyi presence data and satellite environmental data from the Aegean Sea(More)
Anchovy and round sardinella are two important small pelagic species in the Mediterranean that spawn during the summer period. This is a first attempt to model and predict the two species’ potential spawning habitats in this area. Generalized additive models (GAMs) were constructed based on satellite environmental variables and presence/absence egg data,(More)
Ecosystem-based management (EBM) requires more extensive information than singlespecies management. Active underwater acoustic methods provide a means of collecting a wealth of ecosystem information with high space–time resolution. Worldwide fisheries institutes and agencies are carrying out regular acoustic surveys covering many marine shelf ecosystems,(More)
Geostatistical techniques were applied and a series of spatial indicators were calculated (occupation, aggregation, location, dispersion, spatial autocorrelation and overlap) to characterize the spatial distributions of European anchovy and sardine during summer. Two ecosystems were compared for this purpose, both located in the Mediterranean Sea: the(More)
A number of scientific papers in the last few years singled out the influence of environmental conditions on the spatial distribution of fish species, highlighting the need for the fisheries scientific community to investigate, besides biomass estimates, also the habitat selection of commercially important fish species. The Mediterranean Sea, although(More)
We combined generalised additive models and GIS to model and map anchovy potential spawning habitat using anchovy egg and adult presence/absence data from the North Aegean Sea along with in situ environmental information, collected during the beginning / peak of the spawning period. First, we compared the spawning habitat models constructed using different(More)
1 Hellenic Centre for Marine Research, Institute of Marine Biological Resources, Agios Kosmas, 16610 Elliniko, Athens, Greece. E-mail: amachias@hcmr.gr 2 Istituto di Scienze Marine, Consiglio Nazionale delle Ricerche, Largo Fiera della Pesca, 60125 Ancona, Italy. 3 Istituto per l’Ambiente Marino Costiero, Consiglio Nazionale delle Ricerche, Mazara del(More)
Citation: Giannoulaki M, Pyrounaki MM, Bourdeix J-H, Ben Abdallah L, Bonanno A, Basilone G, Iglesias M, Ventero A, De Felice A, Leonori I, Valavanis VD, Machias A and Saraux C (2017) Habitat Suitability Modeling to Identify the Potential Nursery Grounds of the Atlantic Mackerel and Its Relation to Oceanographic Conditions in the Mediterranean Sea. Front.(More)