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ARQ - LMS - Número 31

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http://hdl.handle.net/10400.3/3276

Artigos publicados no Número 31 - 2014

CONTENTS:

ALVES, F., A. DINIS, C. RIBEIRO, C. NICOLAU, M. KAUFMANN, C.M. FORTUNA & L. FREITAS - Daytime dive characteristics from six short-finned pilot whales Globicephala macrorhynchus off Madeira Island.

LINO, S., B. SOLÉ, V. DE MATOS, R. PEREIRA, J.R. XAVIER, R.S. SANTOS & A. COLAÇO - Lipid extractions from marine deep-sea invertebrates: modifications to the Bligh & Dyer method to increase lipid yields.

WIRTZ, PETER - A new species of Malacoctenus from the Cape Verde Islands, eastern Atlantic (Pisces Teleostei, Labrisomidae).

GASPAR, C., P. CARDOSO, P.A.V. BORGES & K.J. GASTRON - Efficiency of sampling methods and effort to assess arthropod diversity in Azorean native forests.

BARREIROS, J.P., R.B. ELIAS, R. GABRIEL, P. RODRIGUES, L.D. BARCELOS, J.O. BRANCO & P.A.V. BORGES - The Yellow-crowned Night Heron Nyctanassa violacea (Aves: Pelecaniformes: Ardeidae) in the Azores and Madeira Archipelagos: a new species for the Western Palearctic.

GABRIEL,R., M.M.C. COELHO, D.S.G. HENRIQUES, P.A.V. BORGES, R.B. ELIAS, J. KLUGE & C. AH-PENG - Long-term monitoring across elevational gradients to assess ecological hypothesis: a description of standardized sampling methods in oceanic islands and first results.

SHORT COMMUNICATIONS:

WIRTZ, PETER - Seven invertebrates new for the marine fauna of Madeira Archipelago.

JENTZSCH, MATTHIAS - New data on hoverflies (Diptera: Syrphidae) from the Azorean island Pico (Portugal).

MINDERLEIN, ROBERT & PETER WIRTZ - A sea urchin (Diadema africanum Rodriguez et al., 2013) and a pipe fish (Syngnathus phlegon Risso, 1827) two new records for the Azores.

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Browsing ARQ - LMS - Número 31 by Subject "Biologgers"

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  • Daytime dive characteristics from six short-finned pilot whales Globicephala macrorhynchus off Madeira Island
    Publication . Alves, Filipe M. A.; Dinis, Ana; Ribeiro, Cláudia; Nicolau, Cátia; Kaufmann, Manfred; Fortuna, Caterina M.; Freitas, Luís
    Six time-depth recorders attached with suction-cups were deployed in resident and transient adult short-finned pilot whales to evaluate their daytime diving characteristics in their preferred habitat area off Madeira Island. Here, data on the proportion of time spent at the surface and at different dive phases (descent, bottom and ascent), dive depths and dive rates are presented. With mean attachment durations of 2 h 31 min (SD=2 h), the whales spent a considerable amount of time at the surface (mean=76.3%, SD=18.6) and presented a low diving rate (mean=6.8 dives h‾¹, SD=6.1; considering dive as submergence deeper than 10 m). The maximum dive depth recorded in this study was 988 m, and dives deeper than 500 m, which were recorded from resident and transient whales, suggest foraging activity along their preferred habitat area. The analysis of dives deeper than 100 m shows that the percentage of time spent on descent, bottom or ascent varied between dives, with means of ~40, 30 and 30%, respectively.
    2013Journal article Open access Show more