Dear MARMAM members, 

on behalf of the collegues, I am pleased to share our recent study on “Spatial 
distribution modelling of striped dolphin ( Stenella coeruleoalba ) at 
different geographical scales within the EU Adriatic and Ionian Sea Region, 
central‐eastern Mediterranean Sea ” 

Azzolin, M., Arcangeli, A., Cipriano, G., Crosti, R., Maglietta, R., 
Pietroluongo, G., [ 
https://onlinelibrary.wiley.com/action/doSearch?ContribAuthorStored=Saintingan%2C+S%C3%A9bastien
 | Saintingan ] S., Zampollo A., [ 
https://onlinelibrary.wiley.com/action/doSearch?ContribAuthorStored=Fanizza%2C+Carmelo
 | Fanizza ] C. & Carlucci, R.. (2020). Spatial distribution modelling of 
striped dolphin (Stenella coeruleoalba) at different geographical scales within 
the EU Adriatic and Ionian Sea Region, central‐eastern Mediterranean Sea. 
Aquatic Conservation: Marine and Freshwater Ecosystems . [ 
https://doi.org/10.1002/aqc.3314 | https://doi.org/10.1002/aqc.3314 ] 




Abstract : 

The striped dolphin ( Stenella coeruleoalba ) is one of the most abundant 
cetaceans of the Mediterranean Sea. Nevertheless, it is ranked as ‘Vulnerable’ 
by IUCN Red List experts. To implement conservation strategies within the 
Mediterranean Sea, it is crucial to understand how striped dolphins are 
distributed at different geographical scales. The present study investigates 
its distribution within the EU Adriatic and Ionian Sea Region. To model striped 
dolphin distribution, topographic (distance from shore, depth and slope) and 
oceanographic variables (sea surface temperature and phytoplankton 
concentration) were employed, and species distribution models (SDMs) were 
developed using Maxent software. Generalized additive models (GAMs) were used 
to improve the information supplied by the SDMs, allowing the description of 
response curves to striped dolphin occurrences. Statistical analysis shows that 
striped dolphins are not evenly distributed within the investigated area. The 
higher encounter rates observed in the Gulf of Taranto and the Gulf of Corinth 
confirm that both sub ‐ regions are crucial for its conservation. Furthermore, 
SDMs also indicate suitable areas in the offshore waters of the Adriatic Sea, 
along the continental slope of the north ‐ eastern Ionian Sea and over its 
continental shelf. Within the EU Adriatic and Ionian Sea Region, striped 
dolphins prefer areas at a greater distance from shore, with steeper slopes, 
deeper waters, and higher sea surface temperature. The topographic variables 
are the most explicative factors for both modelling approaches. The analysis of 
striped dolphin SDMs allows the identification of important areas for 
conservation and highlights zones where appropriate mitigation strategies could 
reduce the impact of human activities on this Vulnerable species. Further 
analysis of SDMs for different periods of the year, as well as a genetic study, 
could highlight seasonal movements across and within sub ‐ regions. 




The paper can be accessed at: 

[ https://onlinelibrary.wiley.com/doi/abs/10.1002/aqc.3314 | 
https://onlinelibrary.wiley.com/doi/abs/10.1002/aqc.3314 ] 





The full text is also available upon request from the authors 


All the best and be safe, 
antonella 





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