scholarly journals New Geological Evidence of the 1755 Lisbon Tsunami from the Rock of Gibraltar (Southern Iberian Peninsula)

Minerals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1397
Author(s):  
Francisco Ruiz ◽  
Manuel Pozo ◽  
María Luz González-Regalado ◽  
Joaquín Rodríguez Rodríguez Vidal ◽  
Luis Miguel Cáceres ◽  
...  
Keyword(s):  
Iberian Peninsula ◽  
Sediment Core ◽  
Marine Species ◽  
Western Mediterranean ◽  
Geological Evidence ◽  
Geochemical Evidence ◽  
The Core ◽  
Multidisciplinary Analysis

This paper presents the easternmost mineralogical and geochemical evidence of the 1755 Lisbon tsunami found in the Western Mediterranean. This multidisciplinary analysis of a sediment core obtained in Gibraltar (southern Iberian Peninsula) has allowed us to differentiate a tsunamiite from an old lagoon (The Inundation). This tsunamigenic layer has increased levels of calcite and aragonite and higher concentrations of Ba and ferromagnesian elements in comparison with the underlying lagoonal sediments of this core. This layer is also differentiated by its paleontological record, with the introduction of marine species within this lagoon. The uppermost part of the core includes a transition from swampy/marsh paleoenvironments to terrestrial scenarios, with a final anthropogenic filling occurring during the last century.

scholarly journals The Bioactive Potential of Trawl Discard: Case Study from a Crinoid Bed Off Blanes (North-Western Mediterranean)

Marine Drugs ◽  
2021 ◽  
Vol 19 (2) ◽  
pp. 83
Author(s):  
Alfredo García-de-Vinuesa ◽  
Montserrat Demestre ◽  
Arnau Carreño ◽  
Josep Lloret
Keyword(s):  
Bioactive Compounds ◽  
Fish Habitat ◽  
Antibacterial Properties ◽  
Marine Species ◽  
Western Mediterranean ◽  
Bioactive Molecules ◽  
Added Value ◽  
Future Research ◽  
Trawl Survey ◽  
Bioactive Potential

Although knowledge of the bioactive compounds produced by species inhabiting coastal waters is increasing, little is known about the bioactive potential produced by marine species occupying deeper habitats with high biodiversity and productivity. Here, we investigate about the bioactive potential of molecules produced by species that inhabit the crinoid beds, a poorly known essential fish habitat affected by trawling, wherein large amounts of commercial and noncommercial species are discarded. Based on a trawl survey conducted in 2019, 14% of the 64 species discarded on crinoid beds produce molecules with some type of bioactive potential, including; soft corals (Alcyonium palmatum); tunicates (Ascidia mentula); bony fish, such as horse mackerel (Trachurus trachurus); European hake (Merluccius merluccius); and chondrichthyans, such as small-spotted catshark (Scyliorhinus canicula). In addition, 16% of the discarded species had congeneric species that produce compounds with bioactive potential, indicating that such species might also possess similar types of bioactive molecules. Molecules with antioxidant, antitumour, antihypertensive, and antibacterial properties were the most frequent, which could provide the basis for future research aiming to discover new marine-based drugs and compounds for other human uses. Among all species or genera that produce compounds with bioactive potential, 68% presented medium or high vulnerability to trawling. Results show that the discarded catch contains many species, which produce different bioactive compounds that represent an added-value resource. These results highlight the importance of manage properly crinoid beds, to ensure that species that produce molecules with bioactive potential inhabiting these habitats are protected.

scholarly journals PRELIMINARY STUDIES ON SEDIMENT CORE FROM THE TYRO BASIN

2017 ◽  
Vol 50 (1) ◽  
pp. 324
Author(s):  
M. Geraga ◽  
Ch. Anagnostou ◽  
I. Iliopoulos ◽  
M. Kontali
Keyword(s):  
Mediterranean Sea ◽  
Sediment Core ◽  
Eastern Mediterranean ◽  
Planktonic Foraminifera ◽  
Mineralogical Composition ◽  
Eastern Mediterranean Sea ◽  
Sediment Samples ◽  
Preliminary Results ◽  
The Core ◽  
Mineral Constituents

The present paper summarizes the preliminary results of the mineralogical and micropaleontological analysis conducted on sediment samples from core TYR05 retrieved from the anoxic and hypersaline Tyro basin in the eastern Mediterranean Sea. The core comprises a complex lithostratigraphic sequence attributed to the strong geodynamic regime of the area. The planktonic foraminifera associations present fluctuations which coincide with changes in the lithology of the core. The mineralogical composition of the sediments shows influence from the evaporites developed on the bottom of the basin. The mineral constituents in association to the microfauna assemblages suggest that the sediments include sapropelic layers. Further analyses are needed in order to determine safely the sapropelic deposits.

First record of the Levantine species Scoloplos haasi (Orbiniidae: Scolecida: Annelida) from the Mediterranean coast of Spain

2009 ◽  
Vol 90 (5) ◽  
pp. 1051-1054 ◽  
Author(s):  
Eduardo López
Keyword(s):  
Natural History ◽  
Iberian Peninsula ◽  
British Museum ◽  
First Record ◽  
Western Mediterranean ◽  
Mediterranean Coast ◽  
Geographical Range ◽  
Polychaete Species ◽  
The Mediterranean

During an investigation devoted to characterize all the Orbiniidae polychaete species present in the Iberian Peninsula, several individuals previously identified as Scoloplos armiger showed to actually belong to Scoloplos haasi, a species to date considered endemic from Israel. The comparison with the holotype deposited in the British Museum of Natural History confirmed the identification. This record of S. haasi is not only a new one for the western Mediterranean but also the first one out of its original locality, extending largely westwards the geographical range of the species.

scholarly journals Notes on the distribution and habitat of Ochthebius lobicollis Rey, 1885, a poorly known north-western Mediterranean coastal species (Coleoptera: Hydraenidae)

2019 ◽  
Vol 51 (1) ◽  
pp. 51-54
Author(s):  
Ignacio Ribera ◽  
Carles Hernando
Keyword(s):  
Iberian Peninsula ◽  
Cytochrome Oxidase ◽  
New Records ◽  
Genetic Data ◽  
Western Mediterranean ◽  
Cytochrome Oxidase 1 ◽  
Coastal Species ◽  
Gulf Of Lion ◽  
First Time ◽  
North Western

Ochthebius (Ochthebius) lobiccoastal habitatsollis Rey, 1885 is recorded for the first time from the Iberian Peninsula (Girona) and the island of Corsica; new records are also given for the islands of Menorca and Sardinia. The species is known only from coastal habitats through the Gulf of Lion and the Ligurian and Balearic seas, typically living in rockpools of different salinity or small trickles or freshwater runoffs. Genetic data of the cytochrome oxidase 1 gene from Iberian, Menorcan and Sardinian specimens shows less than 1% divergence, suggesting lack of isolation between populations.

Mineralogical implications for the Late Pleistocene glaciation in Amery Oasis, East Antarctica, from a lake sediment core

2008 ◽  
Vol 20 (2) ◽  
pp. 169-172 ◽  
Author(s):  
Nadja Hultzsch ◽  
Bernd Wagner ◽  
Bernhard Diekmann ◽  
Duanne White
Keyword(s):  
Sediment Core ◽  
Surface Sediments ◽  
Mineralogical Composition ◽  
East Antarctica ◽  
Pleistocene Glaciation ◽  
Lower Section ◽  
Rock Outcrops ◽  
Ice Caps ◽  
The Core ◽  
Lake Sediment Core

AbstractThe clay mineralogical composition of a 552 cm long sediment core from Lake Terrasovoje in Amery Oasis, East Antarctica, was analysed and compared with that in surface sediments from other locations in the vicinity. The lower part of the sediment core is formed by sub- and proglacial sediments with a dominance of smectite and illite, and lower amounts of kaolinite and chlorite. The upper part of the core is deposited after 12 500 cal yr bp and mainly composed of illite and kaolinite, with low amounts of smectite and chlorite, such as found in samples from rock outcrops and covering sediments throughout Amery Oasis. The clay composition in the lower section of core Lz1005 suggest that the basin of Lake Terrasovoje was filled by a 150–200 m thickened Nemesis Glacier prior to 12 500 cal yr bp rather than by local ice caps.

The Great Reform Empires (1100–1250 CE)

2017 ◽  
Author(s):  
Felix Arnold
Keyword(s):  
Iberian Peninsula ◽  
Western Mediterranean ◽  
Islamic Architecture ◽  
Geometric Symmetry

This chapter describes how Islamic architecture developed more sober and abstract tendencies during the religious reforms of 1100-1250 CE as two successive Berber dynasties, first the Almoravids, then the Almohads, consolidated power and united Islamic rule in the western Mediterranean. During the reign of the Almoravids the palaces at Bin Yūniš, Onda, and Murcia show a steady transition from the styles of the tā’ifa-period to the distinctive architeture of the Almohads. Meanwhile, the palace of Monteagudo, constructed at the collapse of the Almoravids during the “second tā’ifa-period” fully introduced the Abbasid concept of space to the Iberian Peninsula and culminated the merger of fortified castles and residential palaces. Reflecting their interest in the governed community, the Almohads constructed their qasabas adjoined to cities, as may be seen in Marrakesh and Seville. An affinity for geometric symmetry and order, likely arising from Abbasid spatial conceptions, dictated the Almohads’ unadorned architectual style.

A new Ischnomera of the I. xanthoderes (Mulsant, 1858) complex (Coleoptera: Oedemeridae) from Sicily

Zootaxa ◽  
2019 ◽  
Vol 4671 (4) ◽  
pp. 541-550
Author(s):  
MARCO A. BOLOGNA ◽  
RICCARDO POLONI ◽  
XAVIER A. VÁZQUEZ
Keyword(s):  
Iberian Peninsula ◽  
Western Mediterranean ◽  
Southern France ◽  
Northwestern Africa

A new Ischnomera from northern Sicily is described. Besides this species, in the western Mediterranean I. xanthoderes complex were distinct one species from the Iberian peninsula and southern France (I. xanthoderes), and one from northwestern Africa (I. tenietensis). All species are figured and a key to the species is published. 

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