Sobre la presencia del alga Caulerpa taxifolia (Vahl) C. Agardh (Caulerpales, Chlorophyta) en aguas costeras de Mallorca

Abstract not availabl

ClimateFish: A Collaborative Database to Track the Abundance of Selected Coastal Fish Species as Candidate Indicators of Climate Change in the Mediterranean Sea

Under the effects of global warming, many animals and plants are undergoing rapid distribution shifts. These changes can be particularly rapid in marine fishes, and many species have responded markedly to recent increases in sea temperature. ClimateFish is an open-access database, which collates abundance data for 7 Mediterranean indigenous and 8 non-indigenous fishes, proposed as candidate indicators of climate change. These species have been selected by a network of Mediterranean scientists based on their wide distribution, responsiveness to temperature conditions and easy identification. Data are periodically collected according to a standard visual census protocol in four different depth layers. At present, the database collates data on a total number of 101'771 observed individuals belonging to the 15 target species. Counts were realized along 3142 transects carried out in 7 Mediterranean countries between 2009 and 2021. This database, associated with climate data, offers new opportunities to investigate spatiotemporal effects of climate change and to test the effectiveness of each selected indicator. Data are available at https://doi.org/10.17882/86784.The Mediterranean ClimateFish initiative was initially conceived by the international basin wide monitoring program CIESM Tropical Signals (funded by the Albert II of Monaco Foundation) and subsequently supported by the Interreg Med Programme (Projects: MPA-ADAPT, grant number 1MED15_3.2_M2_337 and MPA Engage, grant number 5MED18_3.2_M23_007), 85% co funded by the European Regional Development Fund

Les invasions biològiques en el medi marí: exemples i impactes a la Mediterrània Occidental

Biological invasions in marine environment: examples and impacts in the Western Mediterranean. Here, we offer a brief review on the impact invasive species have on coastal marine ecosystems, with particular focus on the Mediterranean Sea. We also provide a list of the main invasive macroalgal species in the Western Mediterranean, indicating the specific invaded habitats and their distribution patterns. Although not yet invasive, we describe certain alien invertebrates known to thrive in several areas of the Spanish Mediterranean. We discuss the main theories on species invasibility and summarize the behaviour of the major Western Mediterranean algal invaders in relation to these theories. We conclude this discussion by explaining the difficulties involved in predicting general patterns of invasion, since the success of a given species is dependent not only upon the existence of predators, competitors and pathogens, nor solely upon resource availability, but also on other unknown factors that might be critical to properly determine invasive capability. Finally, we list several methodologies used for the control and/or eradication of marine invasive species, almost one of which have ever succeeded. It is our belief that prevention remains the most effective measure, as well as the most environmentally friendly and economically viable way to avoid the introduction of alien species.Peer reviewe

On the presence of a small population of Sargassun trichocarpum J. Agardh (Phaeophyceae: Fucales) in Catalonia (Northwestern Mediterranean)

Este artículo contiene 3 páginas, 3 figuras.Fundació AlivePeer reviewe

First report of cleaning activity of Lepadogaster candolii (Gobiesocidae) in the Mediterranean Sea

2 páginas, 2 figuras.[FR]Premier signalement de l’activité de nettoyage de Lepadogaster candolii (Gobiesocidae) en Méditerranée. L’activité de nettoyage de Lepadogaster candolii Risso, 1810 a été observée pour la première fois en août 2009, au cours d’une plongée réalisée dans la Réserve Marine des Îles Medes (Méditerranée nord-occidentale). L’individu nettoyait la cavité buccale d’un grand mérou Epinephelus marginatus (Lowe, 1834), qui restait bouche ouverte et immobile à quelque distance du substrat. Ce signalement apporte une information nouvelle quant au comportement alimentaire de cette espèce, considerée classiquement comme cryptobenthique.Peer reviewe

Primera cita de la llebre de mar Bursatella leachi (de Blainville, 1817) a la costa mediterrània peninsular. Gea, Flora et Fauna. Notes breus (fauna).

2 páginas, 1 figura.Peer reviewe

Rapid Northward Spread of a Zooxanthellate Coral Enhanced by Artificial Structures and Sea Warming in the Western Mediterranean

12 páginas, 7 figuras , 3 tablas. 4 páginas adicionales con 1 texto, 2 figuras y 1 tabla.The hermatypic coral Oculina patagonica can drive a compositional shift in shallow water benthic marine communities in the northwestern Mediterranean. Here, we analyze a long-term, large-scale observational dataset to characterize the dynamics of the species’ recent northward range shift along the coast of Catalonia and examine the main factors that could have influenced this spread. The variation in the distributional range of Oculina patagonica was examined by monitoring 223 locations including natural and artificial habitats along .400 km of coastline over the last 19 years (1992–2010). Abundance of the species increased from being present in one location in 1992 to occur on 19% of the locations in 2010, and exhibited an acceleration of its spreading over time driven by the join action of neighborhood and long-distance dispersal. However, the pattern of spread diverged between artificial and natural habitats. A short lag phase and a high slope on the exponential phase characterized the temporal pattern of spread on artificial habitats in contrast to that observed on natural ones. Northward expansion has occurred at the fastest rate (22 km year21) reported for a coral species thus far, which is sufficiently fast to cope with certain climate warming predictions. The pattern of spread suggests that this process is mediated by the interplay of (i) the availability of open space provided by artificial habitats, (ii) the seawater temperature increase with the subsequent extension of the growth period, and (iii) the particular biological features of O. patagonica (current high growth rates, early reproduction, and survival to low temperature and in polluted areas). These results are indicative of an ongoing fundamental modification of temperate shallow water assemblages, which is consistent with the predictions indicating that the Mediterranean Sea is one of the most sensitive regions to global change.ES, RC and MR are part of the Marine Biogeochemistry and Global Change Research group from the Generalitat de Catalunya (2009SGR142).Peer reviewe