Long-term monitoring for the surveillance of the conservation status of Tursiops truncatus in an EU Natura2000 site in the Mediterranean Sea. A pilot study in the Tuscan Archipelago
Published:
May 13, 2021
Keywords:
Habitats Directive Tursiops truncatus Tuscan Archipelago Natura 2000 at sea.
Abstract
A pilot study, using the dataset from the research network ‘FLT Med Net’, which regularly monitors transborder regions in the Mediterranean Sea using ferries as platform for systematic surveys, was undertaken to assess common bottlenose dolphin range and population trends within the Natura 2000 EU marine site “Tutela del Tursiops truncatus”. The site was recently designated by the Tuscany Region (Italy) within the requirement of the EU Habitats Directive. In order to evaluate the conservation status of bottlenose dolphin according to the surveillance scheme of the Directive, two six-year periods (2007-2012; 2013-2018) were compared to assess trends in distribution-occurrence (range); Sightings Per Unit of Effort and Density (population). In total, 18146 NM were surveyed along two fixed transects, recording 90 sightings of Tursiops truncatus and a total of 268 specimens. Between the two periods, slight but not statistically significant differences were assessed, with decreasing trend in range and population of the species; no variation was detected in mean group sizes. Travelling was the most common behaviour, and juveniles were present in 20% of the sightings, concentrated during spring and summer. The consistent FLT Med Net dataset was found to be appropriate to evaluate important parameters for the assessment of trends in the conservation status of Tursiops truncatus at the Natura2000 site scale.
Article Details
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ARCANGELI, A., CROSTI, R., CAMPANA, I., CAROSSO, L., GREGORIETTI, M., MAINARDI, G., MAZZUCATO, V., & CASTELLI, A. (2021). Long-term monitoring for the surveillance of the conservation status of Tursiops truncatus in an EU Natura2000 site in the Mediterranean Sea. A pilot study in the Tuscan Archipelago. Mediterranean Marine Science, 22(2), 340–346. https://doi.org/10.12681/mms.24562
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- Vol. 22 No. 2 (2021)
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- Research Article
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References
Akaike, H., 1974. A new look at the statistical model identification. IEEE Transactions on Automatic Control, 19 (6), 716-723.
Arcangeli, A., Marini, L., Crosti, R., 2013. Changes in cetacean presence, relative abundance and distribution over 20 years along a trans-regional fixed line transect in the Central Tyrrhenian Sea. Marine Ecology, 34 (1), 112-121.
Arcangeli, A., Orasi, A., Carcassi, S., Crosti, C., 2014. Exploring thermal and trophic preference of Balaenoptera physalus in the Central Tyrrhenian Sea: a new summer feeding ground? Marine Biology, 161, 427-436.
Arcangeli, A., Campana, I., Marini, L., MacLeod, C., 2016. Long-term presence and habitat use of Cuvier’s beaked whale (Ziphius cavirostris) in the central Tyrrhenian Sea. Marine Ecology, 37, 269-282.
Arcangeli, S., Aissi, M., Atzori, F., Azzolin, M., Campana, I. et al., 2019. Fixed line transect mediterranean monitoring network (FLT Med net), an international collaboration for long term monitoring of macro-mega fauna and main threats fixed line transect mediterranean monitoring network. Biologia Marina Mediterranea, 26 (1), 400-401.
Bearzi, G., Fortuna, C., Reeves, R., 2012. Tursiops truncatus. The IUCN Red List of Threatened Species 2012: e. T22563A2782611.
Campana, I., Crosti, R., Angeletti, D., Carosso, L., David, L. et al., 2015. Cetacean response to summer maritime traffic in the western Mediterranean Sea. Marine Environmental Research, 109, 1-8.
Campana, I., Angeletti, D., Crosti, R., Luperini, C., Ruvolo, A. et al., 2017. Seasonal characterization of maritime traffic and the relationship with cetacean presence in the Western Mediterranean Sea. Marine Pollution Bulletin, 115 (1), 282-291.
Campana, I., Angeletti, D., Crosti, R., Di Miccoli, V., Arcangeli, A., 2018. Seasonal patterns of floating macro-litter across the Western Mediterranean Sea: a potential threat for cetacean species. Rendiconti Lincei. Scienze Fisiche e Naturali, 1-15.
Carlucci, R., Cipriano, G., Paoli, C., Ricci, P., Fanizza, C. et al., 2018. Random Forest population modelling of striped and common-bottlenose dolphins in the Gulf of Taranto (Northern Ionian Sea, Central-eastern Mediterranean Sea). Estuarine, Coastal and Shelf Science, 204, 177-192.
Carnabuci, M., Schiavon, G., Bellingeri, M., Fossa, F., Paoli, C. et al., 2016. Connectivity in the network macrostructure of Tursiops truncatus in the Pelagos Sanctuary (NW Mediterranean Sea): does landscape matter? Population Ecology, 58 (2), 249-264.
Cominelli, S., Moulins, A., Rosso, M., Tepsich, P., 2016. Fin whale seasonal trends in the Pelagos sanctuary, Mediterranean Sea. The Journal of Wildlife Management, 80 (3), 490-499.
Correia, A.M., Tepsich, P., Rosso, M., Caldeira, R., Sousa-Pinto, I., 2015. Cetacean occurrence and spatial distribution: Habitat modelling for offshore waters in the Portuguese EEZ (NE Atlantic). Journal of Marine Systems, 143, 73-85.
Crosti, R., Arcangeli, A., Romeo, T., Andaloro, F., 2017. Assessing the relationship between cetacean strandings (Tursiops truncatus and Stenella coeruleoalba) and fishery pressure indicators in Sicily (Mediterranean Sea) within the framework of the EU Habitats Directive. European Journal of Wildlife Research, 63 (3), 55.
DG Environment, 2017. Reporting under Article 17 of the Habitats Directive: Explanatory notes and guidelines for the period 2013-2018. Brussels, 188 pp.
Fortuna, C.M., Cañadas, A., Holcer, D., Brecciaroli, B., Donovan, G.P. et al., 2018. The coherence of the European Union marine Natura 2000 network for wide-ranging charismatic species: a Mediterranean case study. Frontiers in Marine Science, 5, 356.
Genov, T., Centrih, T., Kotnjek, P., Hace, A., 2019. Behavioural and temporal partitioning of dolphin social groups in the northern Adriatic Sea. Marine Biology, 166 (1), 1-14.
Gnone, G., Bellingeri, M., Dhermain, F., Dupraz, F., Nuti, S. et al., 2011. Distribution, abundance, and movements of the bottlenose dolphin (Tursiops truncatus) in the Pelagos Sanctuary MPA (north-west Mediterranean Sea). Aquatic Conservation: Marine and Freshwater Ecosystems, 21 (4), 372-388.
Gòmez de Segura, A.G., Crespo, E.A., Pedraza, S.N., Hammond, P.S., Raga, J.A., 2006. Abundance of small cetaceans in waters of the central Spanish Mediterranean. Marine Biology, 150 (1), 149-160.
Hammer, Ø., Harper, D.A., Ryan, P.D., 2001. PAST: Paleontological statistics software package for education and data analysis. Palaeontologia Electronica, 4 (1), 9.
Hengl, T., Sierdsema, H., Radović, A., Dilo, A., 2009. Spatial prediction of species’ distributions from occurrence-only records: combining point pattern analysis, ENFA and regression- kriging. Ecological Modelling, 220 (24), 3499- 3511.
ISPRA, 2015. Fixed line transect using ferries as platform of observation-monitoring protocol. Technical Annex I of the agreement for FLT Med monitoring Net, 19 pp. Available at: https://www.isprambiente.gov.it/files2021/progetti/technical- annex-i_monitoring-protocol_2015.pdf
Lauriano, G., Pierantonio, N., Donovan, G., Panigada, S., 2014. Abundance and distribution of Tursiops truncatus in the Western Mediterranean Sea: an assessment towards the Marine Strategy Framework Directive requirements. Marine Environmental Research, 100, 86-93.
Leeney, R. H., 2007. Distribution and abundance of harbour porpoises and other cetaceans in Roaringwater Bay, Co. Cork. Report to the National Parks and Wildlife Services, 23 pp.
Matear, L., Robbins, J. R., Hale, M., Potts, J., 2019. Cetacean biodiversity in the Bay of Biscay: suggestions for environmental protection derived from citizen science data. Marine Policy, 109, 103672.
Nuti, S., Giorli, G., Bedocchi, D., Bonelli, P., 2007. Distribution of cetacean species in the Tuscan Archipelago as revealed by GIS and photographics records with special regard to bottlenose dolphin (Tursiops truncatus, Montagu 1821). p. 16-19. In: 35th Annual Symposium of European Association for Aquatic Mammals, Antibes, 16-19 March 2007.
EAAM, Brussels. Pennino, M.G., Pérez Roda, M.A., Pierce, G.J., Rotta, A., 2016. Effects of vessel traffic on relative abundance and behaviour of cetaceans: the case of the bottlenose dolphins in the Archipelago de La Maddalena, north-western Mediterranean sea. Hydrobiologia, 776, 237-248.
Poeta, G., Staffieri, E., Acosta, A. T., Battisti, C., 2017. Ecological effects of anthropogenic litter on marine mammals: A global review with a “black-list” of impacted taxa. Hystrix, Italian Journal of Mammalogy, 28 (2), 253-264. Regione Toscana, 2012. L’Osservatorio Toscano per la biodiversità: secondo report 2010/2011. 36pp.
Robbins, J.R., Babey, L., Embling, C.B., 2020. Citizen science in the marine environment: estimating common dolphin densities in the north-east Atlantic. PeerJ, 8, e8335.
Rossi, A., Scordamaglia, E., Bellingeri, M., Gnone, G., Nuti, S. et al., 2017. Demography of the bottlenose dolphin Tursiops truncatus (Mammalia: Delphinidae) in the Eastern Ligurian Sea (NW Mediterranean): quantification of female reproductive parameters. The European Zoological Journal, 84 (1), 294-302.
Tepsich, P., Schettino, I., Atzori, F., Azzolin, M., Campana, I. et al., 2020. Trends in summer presence of fin whales in the Western Mediterranean Sea Region: new insights from a long-term monitoring program. PeerJ, 8, e10544.
Thomas, L., Buckland, S.T., Rexstad, E.A., Laake, J.L., Strindberg, S. et al., 2010. Distance software: design and analysis of distance sampling surveys for estimating population size. Journal of Applied Ecology, 47, 5-14.
Vassallo, P., Marini, C., Paoli, C., Bellingeri, M., Dhermain, F. et al., 2020. Species‐specific distribution model may be not enough: The case study of bottlenose dolphin (Tursiops truncatus) habitat distribution in Pelagos Sanctuary. Aquatic Conservation: Marine and Freshwater Ecosystems, 30 (8), 1689-1701.
Weir, C.R., Stockin, K.A., Pierce, G.J., 2007. Spatial and temporal trends in the distribution of harbour porpoises, whitebeaked dolphins and minke whales off Aberdeenshire (UK), north-western North Sea. Journal of the Marine Biological Association of the United Kingdom, 87 (1), 327-338.
