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3. Demersal cephalopod communities in the Mediterranean – a large scale analysis

Author

Keller, S. (Stefanie), Hidalgo, M. (Manuel), Álvarez-Berastegui, D. (Diego), Bitetto, I. (Isabella), Casciaro, L. (Loredana), Cuccu, D. (Danila), Esteban-Acón, A. (Antonio), Garofalo, G. (Germana), González-Aguilar, M. (María), Guijarro, B. (Beatriz), Josephides, M. (Marios), Jadaud, A. (Angélique), Lefkaditou, E. (Eugenia), Maiorano, P. (Porzia), Manfredi, C. (Chiara), Marceta, B. (Bojan), Micallef, R. (Reno), Peristeraki, P. (Panagiota), Relini, G. (Giulio), Sartor, P. (Paolo), Spedicato, M.T. (Maria Teresa), Tserpes, G. (George), and Quetglas, A. (Antoni)

Subjects
Cephalopods, Community analysis, Environmental gradients, Mediterranean, Bottom trawl surveys, MEDITS
Abstract

Cephalopod assemblages at the scale of the entire Mediterranean Sea were analysed using information from 2 decades of standardized scientific bottom trawl surveys. Western and eastern assemblages (6 yr of data) were compared using a combined approach of multivariate ordination techniques and non-linear regressions. These methods enabled us to distinguish assemblages and simultaneously analyse the influence of geographic, bathymetric and environmental (sea surface temperature and chlorophyll a concentration) gradients on observed community patterns. Despite few differences in species composition between sub-basins, the relative contribution of species differed. Bathymetry was the primary structural driver for the cephalopod communities of both basins, and contributed to 3 assemblages (shallow water, upper slope and middle slope). Winter temperature influenced community assemblages more strongly in the western than in the eastern basin, in contrast to a small but consistent winter productivity influence on community assemblages in both basins. Thus, the environmental parameters analysed did not cause an immediate change in cephalopod assemblages, but rather an effect lagged by several months. Differences in the relative importance of environmental drivers show that different processes operate in the 2 basins. These results demonstrate similarities and differences between Mediterranean basins regarding important cephalopod functional groups. This information should help integrative ecosystem management approaches currently used in fisheries and conservation management.

Published
2017

4. Demersal cephalopod communities in the Mediterranean: a large-scale analysis

Author

Keller, S, primary, Hidalgo, M, additional, Álvarez-Berastegui, D, additional, Bitetto, I, additional, Casciaro, L, additional, Cuccu, D, additional, Esteban, A, additional, Garofalo, G, additional, Gonzalez, M, additional, Guijarro, B, additional, Josephides, M, additional, Jadaud, A, additional, Lefkaditou, E, additional, Maiorano, P, additional, Manfredi, C, additional, Marceta, B, additional, Micallef, R, additional, Peristeraki, P, additional, Relini, G, additional, Sartor, P, additional, Spedicato, MT, additional, Tserpes, G, additional, and Quetglas, A, additional

Published
2017
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5. Red mullet (Mullus barbatus) in the GSA 17

Author

(1) Carpi P., (1) Angelini S., (1) Belardinelli A., (1) Cingolani N., (1) Colella S., (1) Croci C., (1) De Felice A., (1) Donato F., Isajlovic I., (1) Martinelli M., Marceta B., (1) Panfili M., Pengal P., (1) Santojanni A., Vrgoc N., and Arneri E

Published
2012

6. Mantis shrimp (Squilla mantis) in the GSA 17

Author

(1) Scarcella G., (1) Fabi G., (1) Grati F., (1) Polidori P., (1) Domenichetti F., (1) Bolognini L., (1) Santojanni A., (1) Angelini S., Pengal P., Marceta B., Piccinetti C., Manfredi C., Giovanardi O., Raicevich S., Celic I., Bullo M., and Sabatini L.

Published
2012

7. Anchovy (Engraulis encrasicolus) in the GSA 17

Author

Santojanni A. (1), Leonori I. (1), Carpi P. (1), De Felice A. (1), Angelini S. (1), Belardinelli A. (1), Biagiotti I. (1), Canduci G. (1), Cikes Kec V., Cingolani N. (1), Colella S.(1), Donato F.(1), Marceta B., Modic T., Panfili M.(1), Pengal P., Ticina V., and Zorica B.

Published
2011

9. Anchovy (Engraulis encrasicolus) in the GSA 17

Author

Santojanni A. (1), Leonori I. (1), Carpi P. (1), De Felice A.(1), Cingolani N. (1), Belardinelli A. (1), Biagiotti I. (1), Campanella F. (1), Cikes Kec V., Colella S. (1), Donato F.(1), Marceta B., Modic T., Panfili M.(1), Pengal P., Ticina V., and Zorica B.

Published
2010

12. Anchovy (Engraulis encrasicolus, L.) stock assessment in the Adriatic Sea: 1975-2004

Author

Cingolani, N., Santojanni, A., Arneri, E., Berlardinelli, A., Colella, S., Donato, F., Giannetti, G., Sinovcic, Zorica, B., Marceta, B., Mannini, P, Massa, F, and Milone, N.

Subjects
Anchovy, Adriatic Sea, Shared stocks, Catches, Stock assessment, Population dynamics methods, Virtual Population Analysis (VPA)
Abstract

Anchovy (Engraulis encrasicolus, L.) is one of the most important commercial species of the Adriatic Sea. Stock of anchovy living in northern and central Adriatic Sea is shared between Italy, Slovenia and Croatia. The present assessment concerns the anchovy stock of northern and central Adriatic Sea (GFCM GSA 17), pooling together data coming from Italy, Slovenia and Croatia. It has been carried out in the ambit of an extension of the AdriaMed-SP research programme. The annual catch of anchovy for the three mentioned countries was obtained for the period 1975-2004. For the same time interval, fishing effort data and length frequency and age-length data were available. These data were combined into fish age classes, so that catch-at-age data were used as basic input of Virtual Population Analysis (VPA), employed for the present stock assessment. Annual values of mid-year stock biomass at sea, annual values of the fishing mortality rate over the age class range 0-3, were obtained. In addition, on the basis of the mentioned fishing mortality rates and natural mortality rate, annual exploitation rates were calculated and compared with a threshold derived from literature and suggested for small pelagics. Stock biomass of anchovy dropped at very low level in 1987. After this collapse a slow, but continuous recovery of biomass took place. The present assessment shows a stronger recovery during last two years. Due to high biomass fluctuations of small pelagics it is recommended to maintain the current level of fishing effort.

Published
2005

13. Sardine (Sardina pilchardus, Walb.) stock assessment in the Adriatic Sea: 1975-2004

Author

Cingolani, N., Santojanni, A., Arneri, E., Berlardinelli, A., Colella, S., Donato, F., Giannetti, G., Sinovcic, G., Zorica, B., and Marceta, B.

Subjects
Sardine, Adriatic Sea, Shared stocks, Catches, Stock assessment, Population dynamics methods, Virtual Population Analysis (VPA)
Abstract

Sardine (Sardina pilchardus, Walb.) is an important commercial species of the Adriatic Sea. Stock of sardine living in northern and central Adriatic is shared between Italy, Slovenia and Croatia. The present assessment concerns the sardine stock of northern and central Adriatic Sea (GFCM GSA 17), pooling together data coming from Italy, Croatia and Slovenia. It has been carried out in the ambit of an extension of the AdriaMed-SP research programme. The annual catch of sardine for the three mentioned countries was obtained for the period 1975-2004. Also length frequency and age-length data and catch and effort data were available. Data were combined into fish age classes, so that catch-at-age data were obtained. That represented the basic input data of Virtual Population Analysis (VPA), employed for the present stock assessment. Annual values of mid-year stock biomass at sea, annual values of fishing mortality rate over the age class range 0-5, were obtained. Moreover, annual exploitation rates were calculated and compared with a threshold derived from literature and suggested for small pelagics. A continuous decline of stock biomass has been observed after the peak in the first half of 1980s. The present assessment shows a slight increase of the biomass and the exploitation rate is around the threshold. Therefore, it is recommended not to allow the fishing effort to rise. Furthermore, difficulties in obtaining economically satisfactory catches by fishermen were perceived in Italy.

Published
2005

16. Rheological properties of hydroxypropylmethyl cellulose/sodium dodecylsulfate mixtures

Author

Katona Jaroslav M., Njaradi Sandra Đ., Sovilj Verica J., Petrović Lidija B., Marčeta Brankica B., and Milanović Jadranka L.

Subjects
polymer-surfactant interaction, HPMC-SDS interaction, shear-thinning, shear-thickening, shear-induced structure formation, Chemistry, QD1-999
Abstract

Rheological properties of mixtures of hydroxypropylmethyl cellulose (HPMC), a nonionic associative cellulose ether, and sodium dodecylsulfate (SDS), an anionic surfactant, were investigated by viscosity measurements performed at different shear rates (0.1-6000 s-1). HPMC/SDS mixtures containing different concentrations of SDS (CSDS=0.00-3.50 % w/w) and HPMC concentrations which corresponded to the overlap parameter c/c*=3, 6, and 12 were prepared. All HPMC/SDS mixtures were found to be shear-thinning when examined in a low-end-to mid-range of the applied shear rates. The degree of shear-thinning, n, and viscosity of the mixtures were influenced by composition of HPMC/SDS mixtures and HPMC-SDS complex formation. The changes in n ranged from values typical for highly shear thinning to almost perfectly Newtonian liquids, and were more pronounced as c/c* was increased from 3 to 6 and 12. A change in flow profile and a buildup of the first normal stress difference (N1) was observed in HPMC/SDS mixtures with c/c*=6 and 12 and CSDS 0.55-1.00 % and 0.55-2.50 %, respectively, when a critical shear rate, crit. was exceeded, suggesting that a shear-induced structure formation in the mixtures took place. [Projekat Ministartsva nauke Republike Srbije, br. Grant III 46010]

Published
2014
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17. MEDLEM database, a data collection on large Elasmobranchs in the Mediterranean and Black seas

Author

Mancusi, Cecilia, Baino, Romano, Fortuna, Caterina, De Sola, Luis Gil, Morey, Gabriel, Bradai, Mohamed Nejmeddine, Kallianotis, Argyrios, Soldo, Alen, Hemida, Farid, Saad, Adib Ali, Dimech, Mark, Peristeraki, Panagiota, Bariche, Michel, Clo, Simona, De Sabata, Eleonora, Castellano, Laura, Garibaldi, Fulvio, Lanteri, Luca, Tinti, Fausto, Pais, Antonio, SPERONE, Emilio, Micarelli, Primo, Poisson, Francois, Sion, Letizia, Carlucci, Roberto, Cebrian-Menchero, Daniel, Seret, Bernard, Ferretti, Francesco, El-Far, Alaa, Saygu, Ismet, Shakman, Esmail A., Bartoli, Alex, Guallart, Javier, Damalas, Dimitrios, Megalofonou, Persefoni, Vacchi, Marino, Colloca, Francesco, Bottaro, Massimiliano, di Sciara, Giuseppe Notarbartolo, Follesa, Maria Cristina, Cannas, Rita, Kabasakal, Hakan, Zava, Bruno, Cavlan, Graziella, Jung, Armelle, Abudaya, Mohammed, Kolitari, Jerina, Barash, Adi, Joksimovic, Aleksandar, Cetkovic, Ilija, Marceta, Bojan, Gonzalez Vilas, Luis, TIRALONGO, Francesco, Giovos, Ioannis, Bargnesi, Filippo, Lelli, Stefano, Barone, Monica, Moro, Stefano, Mazzoldi, Carlotta, Charis, Charilaou, Abella, Alvaro Juan, Serena, Fabrizio, University of Split, Hellenic Center for Marine Research (HCMR), American University of Beirut [Beyrouth] (AUB), Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Department of Biology, Ecology and Earth Sciences [Arcavacata di Rende] (DiBEST), Università della Calabria [Arcavacata di Rende] (Unical), MARine Biodiversity Exploitation and Conservation (UMR MARBEC), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut de Recherche pour le Développement (IRD), Institut de Recherche pour le Développement (IRD), Stazione Zoologica Anton Dohrn (SZN), Universita degli Studi di Cagliari [Cagliari], Agricultural University of Tirana, Département Aérodynamique Energétique et Propulsion (DAEP), Institut Supérieur de l'Aéronautique et de l'Espace (ISAE-SUPAERO), University of Catania [Italy], Centre de Formation et de Recherche sur les Environnements Méditérranéens (CEFREM), Université de Perpignan Via Domitia (UPVD)-Centre National de la Recherche Scientifique (CNRS), Istituto Superiore per la Protezione e la Ricerca Ambientale (ISPRA), Instituto Espagňol de Oceanografia (IEO), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), SOCIB Balearic Islands Coastal Ocean Observing and Forecasting System, Institut National des Sciences et Technologies de la Mer [Salammbô] (INSTM), National Agricultural Research Foundation (NAGREF), Université des Sciences et de la Technologie Houari Boumediene = University of Sciences and Technology Houari Boumediene [Alger] (USTHB), Tishreen University, Hellenic Centre for Marine Research (HCMR), Università degli studi di Genova = University of Genoa (UniGe), Università degli Studi di Sassari = University of Sassari [Sassari] (UNISS), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Università degli studi di Bari Aldo Moro = University of Bari Aldo Moro (UNIBA), Regional Activity Centre for Specially Protected Areas (RAC/SPA), Hopkins Marine Station [Stanford], Stanford University, Cukurova University, University of Tripoli - University Al Fateh, SUBMON - Marine Environmental Services [SPAIN], Universitat de València (UV), National Technical University of Athens [Athens] (NTUA), Istituto di Science Marine (ISMAR ), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Tethys Research Institute [ITALIE], Università degli Studi di Cagliari = University of Cagliari (UniCa), Nature Trust (Malta), University of Haifa [Haifa], University of Montenegro (UCG), Zavod za ribištvo Slovenije (ZZRS), University of Vigo [ Pontevedra], Marine & Environmental Research Lab Ltd (MER), Università Politecnica delle Marche [Ancona] (UNIVPM), Université de Perpignan Via Domitia (UPVD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), FAO Fisheries Division (FAO), Food and Agriculture Organization of the United Nations [Rome, Italie] (FAO), Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome] (UNIROMA), Università degli Studi di Padova = University of Padua (Unipd), Institute for Biological Resources and Marine Biotechnology (IRBIM), Mancusi C., Baino R., Fortuna C., De Sola L.G., Morey G., Bradai M.N., Kallianotis A., Soldo A., Hemida F., Saad A.A., Dimech M., Peristeraki P., Bariche M., Clo S., De Sabata E., Castellano L., Garibaldi F., Lanteri L., Tinti F., Pais A., Sperone E., Micarelli P., Poisson F., Sion L., Carlucci R., Cebrian-Menchero D., Seret B., Ferretti F., El-Far A., Saygu I., Shakman E.A., Bartoli A., Guallart J., Damalas D., Megalofonou P., Vacchi M., Colloca F., Bottaro M., Di Sciara G.N., Follesa M.C., Cannas R., Kabasakal H., Zava B., Cavlan G., Jung A., Abudaya M., Kolitari J., Barash A., Joksimovic A., Cetkovic I., Marceta B., Vilas L.G., Tiralongo F., Giovos I., Bargnesi F., Lelli S., Barone M., Moro S., Mazzoldi C., Charis C., Abella A.J., and Serena F.

Subjects
Bycatch, databases, geographical distribution, large elasinobranchs, Mediterranean and Black seas, sharks, 0106 biological sciences, Mediterranean climate, 2417.05 Biología Marina, 2510.01 Oceanografía Biológica, large elasmobranchs, cetorhinus-maximus gunnerus, Oceanography, computer.software_genre, 01 natural sciences, Basking shark, Pesquerías, Thresher shark, 1st records, biology, Database, conservation, 04 agricultural and veterinary sciences, carcharhinidae, Geography, Mediterranean and black sea, coast, basking shark, Large elasmobranch, carcharodon-carcharias linnaeus, Environmental Engineering, [SDE.MCG]Environmental Sciences/Global Changes, Fishing, Sede Central IEO, Aquatic Science, plumbeus chondrichthyes, biology.animal, [SDV.BA.ZV]Life Sciences [q-bio]/Animal biology/Vertebrate Zoology, by-catch, 14. Life underwater, Ecology, Evolution, Behavior and Systematics, 010604 marine biology & hydrobiology, biology.organism_classification, lamniformes cetorhinidae, Great white shark, Butterfly ray, 040102 fisheries, 0401 agriculture, forestry, and fisheries, Conservation status, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, computer
Abstract

The Mediterranean Large Elasmobranchs Monitoring (MEDLEM) database contains more than 3,000 records (with more than 4,000 individuals) of large elasmobranch species from 21 different countries around the Mediterranean and Black seas, observed from 1666 to 2017. The principal species included in the archive are the devil ray (1,868 individuals), the basking shark (935 individuals), the blue shark (622 individuals), and the great white shark (342 individuals). In the last decades, other species such as the thresher shark (187 individuals), the shortfin mako (180 individuals), and the spiny butterfly ray (138) were reported with increasing frequency. This was possibly due to increased public awareness on the conservation status of sharks, and the consequent development of new monitoring programs. MEDLEM does not have homogeneous reporting coverage throughout the Mediterranean and Black seas and it should be considered as a database of observed species presence. Scientific monitoring efforts in the south-eastern Mediterranean and Black seas are generally lower than in the northern sectors and the absence of some species in our database does not imply their actual absence in these regions. However,the available data allowed us to analyse the frequency and spatial distribution of records, the size frequencies for a few selected species, the overall area coverage, and which species are involved as bycatch by different fishing gears., Sí

Published
2020

18. Large-Scale Spatio-Temporal Patterns of Mediterranean Cephalopod Diversity.

Author

Keller S, Bartolino V, Hidalgo M, Bitetto I, Casciaro L, Cuccu D, Esteban A, Garcia C, Garofalo G, Josephides M, Jadaud A, Lefkaditou E, Maiorano P, Manfredi C, Marceta B, Massutí E, Micallef R, Peristeraki P, Relini G, Sartor P, Spedicato MT, Tserpes G, and Quetglas A

Subjects
Animals, Biodiversity, Chlorophyll metabolism, Chlorophyll A, Geography, Mediterranean Region, Models, Theoretical, Species Specificity, Temperature, Time Factors, Cephalopoda physiology
Abstract

Species diversity is widely recognized as an important trait of ecosystems' functioning and resilience. Understanding the causes of diversity patterns and their interaction with the environmental conditions is essential in order to effectively assess and preserve existing diversity. While diversity patterns of most recurrent groups such as fish are commonly studied, other important taxa such as cephalopods have received less attention. In this work we present spatio-temporal trends of cephalopod diversity across the entire Mediterranean Sea during the last 19 years, analysing data from the annual bottom trawl survey MEDITS conducted by 5 different Mediterranean countries using standardized gears and sampling protocols. The influence of local and regional environmental variability in different Mediterranean regions is analysed applying generalized additive models, using species richness and the Shannon Wiener index as diversity descriptors. While the western basin showed a high diversity, our analyses do not support a steady eastward decrease of diversity as proposed in some previous studies. Instead, high Shannon diversity was also found in the Adriatic and Aegean Seas, and high species richness in the eastern Ionian Sea. Overall diversity did not show any consistent trend over the last two decades. Except in the Adriatic Sea, diversity showed a hump-shaped trend with depth in all regions, being highest between 200-400 m depth. Our results indicate that high Chlorophyll a concentrations and warmer temperatures seem to enhance species diversity, and the influence of these parameters is stronger for richness than for Shannon diversity.

Published
2016
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