1,720,995 research outputs found
La valorizzazione socioeconomica della pesca ricreativa in una prospettiva di sostenibilità
No full textL’orientamento del turismo di massa nell’ottica della sostenibilità. Metodologie e valutazioni per il turismo balneare
No full textTurismo nature-based, sviluppo socioeconomico e conservazione. Il diving come driver per l’area marina protetta
No full textL’impatto ambientale dei turisti balneari: la gestione della CO2 nell’ottica della sostenibilità
No full textFirst direct evidence of reproductive behaviour of the white grouper, Epinephelus aeneus (Geoffroy Saint-Hilaire, 1817)
Full text linkThis study describes the first ever reported direct observation of a pair spawning event and the reproductive liveries of the
white grouper, Epinephelus aeneus. Spawning took place on a rocky bank located in the Marine Protected Area (MPA) of Tavolara-
Punta Coda Cavallo (NE Sardinia, Italy), in the Western Mediterranean Sea. In the evening of August 4th, 2018, the spawning
of two large-sized individuals (~90 cm total length), displaying distinct colour patterns, was observed using SCUBA diving. This
direct observation is the first record of E. aeneus male reproductive livery, characterized by a darker coloration on the head, the
dorsal part of the body and the caudal fin. In addition, information on the environmental conditions in which reproduction occurred
was collected. At the study site, relatively high seawater temperatures were recorded at the time of the E. aeneus spawning (24
°C at 24.7 m), as well as over the 2018 summer months (July-September), even in deep waters (>35 m), compared to previous
summers. The spawning event occurred in a coralligenous-dominated seascape where fishing is prohibited, while diving activities
are allowed. The site hosts abundant populations of ecologically and commercially valuable fish species (e.g., groupers, sparid
fishes), with significant proportions of large-sized individuals (i.e. reproducers). Further studies are needed to advance our knowledge
of the white grouper, with a particular emphasis on reproduction and the importance of implementing effective protection
measures. Prioritizing management actions at key reproductive sites, such as rocky banks, is essential for ensuring the protection
and/or recovery of over-exploited species
Distribution and density of the benthic microalgaChrysophaeum tayloriiLewis & Bryan from Northern to central-Eastern Sardinian coasts = Distribuzione e densità della microalga bentonicaChrysophaeum tayloriiLewis & Bryan dalle coste nord a quelle centro orientali della Sardegna
Full text linkIn August 2009 the distribution and density of the alien microalgaChrysophaeum tayloriiLewis & Bryan (Pelagophyceae) were investigated on hard benthic substrates in seventeen sites from northern to central-eastern Sardinia, in order to estimate the distribution and abundance of this species in the area
Esperimento di rimozione degli ammassi mucillaginosi della microalga alloctonaChrysophaeum tayloriiLewis & Bryan = Experiment of removal of the mucilaginous aggregates by the alien microalgaChrysophaeum tayloriiLewis & Bryan
Full text linkA manipulative experiment was carried out in a small bay of Tavolara Punta Coda Cavallo Marine Protected Area in order to investigate the triggers for formation and storage of the
macroscopic mucilaginous aggregates of the benthic microalgaChrisophaeum tayloriiLewis & Bryan
(Pelagophyceae) and to test the efficacy of mucillage removal
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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