Search results for "Fauna"
showing 10 items of 513 documents
Meiofauna as indicator for assessing the impact of fish farming at exposed marine site
2012
This study aimed to detect the impact of organic loads due to biodeposition from a fish farm in an exposed area of the Strait of Sicily, Mediterranean Sea. Sediment chemistry and meiofaunal assemblages were investigated on a seasonal basis at four stations: two from the impacted area and two control stations. The presence of the cages induced a significant accumulation of proteins, lipids and biopolymeric carbon, resulting in a reduction in meiofaunal density at the impacted stations. Changes in community structure were also evident, as meiofauna under the cages were characterized by increased importance of polychaetes and copepods in comparison with a much lower importance of gastrotrichs …
The marine Crustacea Decapoda of Sicily (central Mediterranean Sea): A checklist with remarks on their distribution
2003
A checklist of the Crustacea Decapoda of Sicily, based on pre viously published records and on original data, is presented. The Sicilian waters were divided into three sectors to account for the different habitats present along the northern and western (sector A), eastern (B) and southern (C) coasts, for the sake of a better interpretation of the species distribution. A total of 186 species was recorded between 0 and 800 m depth, 31 of which are re ported here for the first time. Sector A hosted 153 species, B 105 species, and C 117 species. The dissimilarities among the habitats present in the shallow waters of the three sectors accounted for the low co-occurrence of species: 30 species …
Middle Triassic carbonate platforms in eastern Iberia: Evolution of their fauna and palaeogeographic significance in the western Tethys
2015
Abstract This article reports the first integrated study of the Middle Triassic of Iberia, based on the stratigraphy, sedimentology, and fossil fauna of Muschelkalk facies of the Iberian Ranges and the Catalan Coastal Ranges in Spain. On the basis of this study, new palaeogeographic reconstructions of the westernmost Tethys are proposed, and the evolution of the different palaeogeographic domains of Iberia (e.g., Iberian, Mediterranean, and Levantine–Balearic) are described. In these domains, Muschelkalk facies record the development of wide carbonate platforms that were the consequence of the first two broad marine transgressions of the Mesozoic in Iberia, respectively, late Pelsonian–earl…
Shallow-water benthic hydroids from the Maltese Islands (Central Mediterranean)
2013
Forty species of benthic hydroids, belonging to 15 families and 21 genera, were found in a collection, obtained by SCUBA diving, from the Maltese Islands. Paradoxically for the well studied Mediterranean region, the hydroid fauna of these islands is virtually unexplored. Of 40 species, 33 were identified to species level, with 28 of them reported for the first time for the study area. Hydractinia monocarpa is recorded for the first time in the Mediterranean Sea, and a presumed new species of the genus Clytia has been found. The most speciose families are Campanulariidae with 10 species (25%), Aglaopheniidae with six species (15%) and Sertulariidae with five species (12%). Aglaophenia and Cl…
Four-year soil erosion rates in a running-mountain trail in eastern Iberian Peninsula
2019
During the last decades, the use of mountain trails for running is more and more popular. New trails are opened to allow the runners to practice and compete. This form of human impact on the landscape is new as the new trails do not follow the conservation strategies in design and maintenance as traditional mountain trails constructed by farmers, shepherds and muleteers do. This impact of sport events in nature is not measured and we know little about this impact on vegetation, fauna and soils. We surveyed in September 2018 a trail that was opened in September 2014 and was used for four official mountain trail races, and for training by local runners. Our interviews with organizers and user…
A Contribution to the knowledge of Tunisian "large branchiopods" (Branchiopoda: Anostraca, Notostraca, Spinicaudata)
2009
Estudio parasitológico del pez luna, Mola mola (L.), en el Mediterráneo occidental
2012
En el presente trabajo se ha realizado, por primera vez, un estudio de la parasitofauna del pez luna, Mola mola (L.), del Mediterráneo español. Hasta la fecha, se trata del estudio más detallado y completo sobre los parásitos de este pez en todo el mundo. Se han analizado 106 peces durante el período 2005−2008: 104 procedentes de cuatro muestreos consecutivos en la almadraba de La Azohía (Cartagena, Murcia) y 2 varados en Canet de Berenguer y Almazora (Comunidad Valenciana). Además, también se ha tenido acceso a 61 peces luna, de la misma procedencia, mantenidos en el acuario L’Oceanogràfic de la Ciudad de las Artes y las Ciencias de Valencia durante el periodo 2004−2009, gracias al conveni…
La protección internacional de zonas y especies en la región mediterránea
2018
INTRODUCCIÓN.- PARTE PRIMERA: ZONAS Y ESPECIES PROTEGIDAS INTERNACIONALMENTE EN LA REGION MEDITERRÁNEA. I. LAS ZONAS ESPECIALMENTE PROTEGIDAS Y LA PROTECCIÓN DE LAS ESPECIES EN EL DERECHO INTERNACIONAL. 1. El planteamiento aislante. 2. El planteamiento comprehensivo. a) Los tratados pioneros. b) De la Declaración de Estocolmo en adelante. 3. Hacia la utilización sostenible. II. LAS ZONAS ESPECIALMENTE PROTEGIDAS y LA PROTECCIÓN DE LAS ESPECIES EN EL MEDITERRÁNEO. 1. El antiguo marco para la protección del Mar Mediterráneo contra la contaminación. 2. El período de transición. 3. El nuevo marco para la protección del medio marino y de la región costera del Mediterráneo. PARTE SEGUNDA: LA REGL…
La protección de los mamíferos marinos en el mar Mediterráneo
2018
El presente artículo analiza los instrumentos jurídicos internacionales adoptados para la protección de los mamíferos marinos en el Mar Mediterráneo. Los Estados ribereños de este Mar han preferido impulsar una fuerte colaboración regional a este respecto, en lugar de proceder a una ratificación sistemática de los tratados internacionales ambientales de ámbito mundial. Se analizan tres desarrollos regionales importantes. En primer lugar, en el marco de la cooperación regional marina propiciada por el PNUMA, los instrumentos jurídicos adoptados en desarrollo del Convenio de Barcelona para la protección del medio marino mediterráneo. En segundo lugar, el Acuerdo sobre la conservación de los c…
A detailed analysis of the spatial distribution of Schöningen 13II-4 'Spear Horizon' faunal remains
2021
The Middle Pleistocene Schöningen 13II-4 'Spear Horizon' (Germany) is a key site for the study of human evolution, most notably for the discovery of Paleolithic wooden weaponry and evidence for developed hunting strategies. On the other hand, the 'Spear Horizon' offers an excellent opportunity to approach hominin spatial behavior, thanks to the richness of the archeological assemblage, its exceptional preservation, and the vast expanse of the excavated surface. Analyzing how space was used is essential for understanding hominin behavior at this unique open-air site and, from a wider perspective, for approaching how humans adapted to interglacial environments. In this article, we present an …