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Rubriche Workshop About How To Avocetta 41: 27 (2017) Columns - Rubriche Questa sezione di Avocetta ospita resoconti e comunicazioni ufficiali delle attività del CISO, report della Commissione Ornitologica Italiana, aggiornamenti relativi allo stato dell’avifauna italiana, forum, recensioni, news ed altre comunicazioni. I lettori che volesse- ro proporre nuove rubriche sono invitati a contattare la Redazione. Il fine ultimo delle rubriche è favorire lo scambio di informazioni tra il CISO e i soci, con particolare riferimento alle iniziative pro- mosse dall’Associazione. NOTES Workshop about How to Harmonize monitoring protocols of Storm Petrel in the Mediterranean Organized by PIM Initiative, IMEDEA (CSIC), the Di- tected area/species managers. Some of the Mediterrane- recció General de Medi Natural i de Evaluació Ambiental an colonies located inside caves or galleries are Maretti- (Comunidad Valenciana) and the Benidorm Council, was mo, Benidorm and S’Espartar, where nest-based monitor- held in Benidorm a Workshop about How to Harmonize ing methods are already implemented (Sanz-Aguilar et al. monitoring protocols of Storm Petrel in the Mediterranean 2009a, Mínguez et al. 2015). (Benidorm, 29th-30th June 2017). Also frequent are the colonies settled within boulder beach- Seabirds conservation, including the Storm Petrel Hyd- es and narrow crevices, where the nests are not accessible robates pelagicus melitensis, is a long-term process that (Sanz-Aguilar et al. 2010). There, in spite of its low accu- needs gathering population parameters every year by stud- racy, net-capture is probably the unique method possible to ying several colonies in order to obtain solid evidences approach population trends (using marking-recapture sta- on their spatio-temporal population dynamics. The imple- tistics methods). However, on Storm petrels there are not mentation of a long-term monitoring program is not easy, effective methods to discriminate between breeding adults because the most frequent organizational tools, specially and juvenile wanders (open populations), that could repre- on the public administrations are rigid structures that usu- sent around 70% of the netted petrels (Cadiou 2016). ally obstructs a management adaptive model, needed when some of the aims are long-term ones. Therefore, some keys Combined studies among long-term monitored colonies as concepts to take into account are the following: to assume Marettimo, Benidorm and S’Espartar show a high variabil- risks, to generate confidence, a constant evaluation and a ity on the Storm-petrel life-histories and population trends vision shared within the management team -and outside between colonies (and also within a colony!) (Sanz-Agu- (Mínguez et al. 2015). The main goal for the Benidorm ilar et al. 2009a, 2010, Albores-Barajas et al. 2011, Sol- Workshop was to propose a low-cost long-term monitor- datini et al. 2014, Picorelli et al. unpublished data). That ing method for the Mediterranean Storm-petrel colonies. means that, as far as possible, monitoring and sharing in- formation are needed to understand what’s happen with the In spite of the generally quite difficult access, fortunately, Mediterranean Storm petrels. some of the Mediterranean colonies are located on human accessible caves where marking nests, checking the breed- During the workshop different ponents (fishermen, scienti- ing success (hatching and fledging success) and ringing fics and environmental managers) explain their experienc- chicks and breeding adults are possible. These data, gath- es on several Mediterranean storm petrel colonies: ered fortnightly along the breeding period provide sever- al information to know better the dynamic population on Vicent Martinez (local fishermen) in his talk “The Storm each breeding colony with enough accuracy for the pro- Petrel Island” “L’Illa dels Escaterets” explained that © 2017 CISO - Centro Italiano Studi Ornitologici 27 Columns - Rubriche more than 50 years ago high numbers of Storm petrels bred how to manage population data proved to be effective and at Benidorm Island. At that time Storm petrels coexisted relatively inexpensive. with mice (also in large numbers) and rabbits that became extinct in the Island before the 80’s. Alejandro Izquierdo (Servicio de Vida Silvestre - Consel- leria d’Agricultura, Medi Ambient, Canvi Climàtic i De- Ana Sanz Aguilar (IMEDEA, CSIC-UIB) in her talk ”The senvolupament Rural) in his talk Protocolos para la con- importance of harmonizing seabird monitoring pro- servación del paíño en la Isla de Benidorm, sistema an- grams in the Mediterranean” La importancia de armo- ti-predación y recuperación de varamientos explained nizar protocolos de seguimiento de poblaciones de Aves the local procedure to recovery disorients fledgling storm Marinas en el Mediterráneo explained the importance of petrels on Benidorm beaches. dispersal processes for seabird population dynamics. In particular, she showed the case of the Slender-billed gull The pioneers José Santamaría and Eduardo Minguez and Audouin’s gull to illustrate the importance of dispersal (PIM) in their amusing talk “In the beginning, long time for Metapopulation dynamics (Sanz-Aguilar et al. 2014, ago…” narrated how they started studying the Storm pet- Payo-Payo et al. 2017) and showed that Scopoli’s shear- rels colonies, unknown until then. On late 80’s, the first waters in a small colony in the Balearic Islands are being studies on Storm petrel colonies located in Benidorm is- rescued by immigration (Sanz-Aguilar et al. 2016). She al- land showed the negative effects of the human presence so showed that different survival, recruitment and popula- on the surroundings of the colonies. Flying stormies col- tion dynamics exist between the two Storm petrel colonies lided to the monofilament lines from the numerous sport monitored at Benidorm Island (Sanz-Aguilar et al. 2009a). fishing gear in the entry of the breeding caves, and their nightly behaviour were affected by the fishermen torch Bruno Massa (Palermo University), Cecilia Soldatini and lights). These days we also found a high rate of predation Yuri Albores-Barajas (University of La Paz, Mexico) in by Yellow-legged gull, mainly opportunistic individuals his talk “The colony of Storm Petrels of Marettimo Isle with their nesting territories inside the marine caves where (Italy, Sicily): monitoring and some results” reported Storm petrel colonies are located. a short summary of the long-term study on the colony of Marettimo, illustrating the size of the colony, the breed- Finally, Eduardo Mínguez (PIM) and Ana Sanz Agui- ing cycle, results of ringing and recoveries, bioacoustics, lar (IMEDEA-CSIC) gave their talk “Monitoring pro- sex ratio, diet, physiological conditions in different parts tocol for Mediterranean Storm Petrels: emotive and of the cave due to human disturbance, and general differ- administrative processes, fieldwork and data sharing ences between the subspecies melitensis and that of Atlan- Protocolo de seguimiento en colonias mediterráneas de tic (pelagicus) (see Albores-Barajas et al. 2011, Soldatini paíño: procesos emotivos y administrativos, trabajar en et al. 2014, 2015, 2016). campo y compartir los datos. Eduardo Mínguez explained the organizing main cues and strategies that provided the Paulo Lago (BirdLife Malta) in his talk “Monitor- long term project in Benidorm Island, based on adaptive ing of Storm Petrel colonies in the Maltese islands” management rather than in administrative procedures. Ana Seguimiento de las colonias de paíños de las Islas Malte- Sanz Aguilar detailed the monitoring program of Storm sas, described the location and size of the different colo- petrels carried out at Benidorm Island and highlighted sev- nies in the Maltese islands, including two found in the last eral scientific and conservation outcomes of this long-term 5 years. He summarized the monitoring work done in the monitoring program (Ramírez et al. 2016, Hernández et main colony in Filfla since it was discovered (Sultana et al. 2017, Matovic et al. 2017). In particular, she showed al. 2011) and specially in the last 5 years during two EU- how the installation of nest boxes and the selective cull- LIFE funded projects, the identification of marine IBAs for ing of predators (Yellow-legged gulls) have being proved the species and the assessment of the inter-species conflict as successful measures to guarantee the conservation of with Yellow legged gulls (Metzger et al. 2013, Barbara et Storm petrels (De León & Mínguez 2003, Sanz-Aguilar et al. 2015). al. 2009b, Libois et al. 2012). Virginia Picorelli (Govern Illes Balears),“Seguimiento de On 30th June some of the workshop participants, guided la colonia de paíño de Espartar, Ibiza, talked about how by Ana Sanz Aguilar and Eduardo Minguez, visited the they implemented the Benidorm’s methods to monitor the colony of Mediterranean Storm petrel breeding in the is- S’Espart colony four years ago. Both the field work and let of Benidorm. 28 Columns - Rubriche REFERENCES nisation in social species: the importance of breeding experi- ence for dispersal in overcoming information barriers. Scien- Albores-Barajas Y.V., Riccato F., Fiorin R., Massa B., Torricelli tific Reports, 7: 42866, DOI: 10.1038/srep42866 P. & Soldatini C., 2011. Diet and diving behaviour of Europe- Ramírez F., Afán I., Oro D., Tavecchia G., Catalán I. & Sanz- an Storm Petrels Hydrobates pelagicus in the Mediterranean Aguilar A., 2016. Oceanographic drivers and optimal deci- (ssp. melitensis). Bird Study 58: 208-212. sions shape breeding success
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