scholarly journals An odyssey out of Africa: an integrative review of past and present invasions by the Mediterranean tree frog (Hyla meridionalis)

2020 ◽  
Vol 131 (2) ◽  
pp. 274-290
Author(s):  
Christophe Dufresnes ◽  
Bérénice Alard
Keyword(s):  
Western Europe ◽  
Western Mediterranean ◽  
Integrative Review ◽  
Dispersal Ability ◽  
Tree Frog ◽  
Niche Modelling ◽  
African Species ◽  
Human Footprint ◽  
High Dispersal ◽  
The Mediterranean

Abstract An illustration of the human footprint on biodiversity are the faunal movements that have accompanied commercial and cultural exchanges between civilizations throughout history. In this article, we provide an integrative review of biogeographical and archaeological knowledge to understand these processes for the Mediterranean tree frog (Hyla meridionalis), an African species that has reached several regions of south-western Europe and associated islands. By re-analysing molecular (multilocus mitochondrial and genome-wide markers) and bioclimatic (ecological niche modelling) data, we give a comprehensive picture of the genetic diversity, structure and environmental suitability of H. meridionalis across its natural and exotic ranges, which in turn offer specific clues to the putative routes of colonization and associated events. Long-term monitoring efforts suggest northwards shifts of local range margins, potentially due to global warming, and we further demonstrate that this species is the most frequent amphibian to travel via the food supply chain in Western Europe. High dispersal ability, ecological tolerance and proximity to human settlements have made H. meridionalis a recurrent witness to the complexity and diversity of the civilizations that ruled the Western Mediterranean.

scholarly journals The European 2015 drought from a climatological perspective

2017 ◽  
Vol 21 (3) ◽  
pp. 1397-1419 ◽  
Author(s):  
Monica Ionita ◽  
Lena M. Tallaksen ◽  
Daniel G. Kingston ◽  
James H. Stagge ◽  
Gregor Laaha ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
North Atlantic ◽  
Geopotential Height ◽  
Western Europe ◽  
North Atlantic Ocean ◽  
Western Mediterranean ◽  
Daily Maximum ◽  
Summer Drought ◽  
Drought Conditions ◽  
The Mediterranean

Abstract. The summer drought of 2015 affected a large portion of continental Europe and was one of the most severe droughts in the region since summer 2003. The summer of 2015 was characterized by exceptionally high temperatures in many parts of central and eastern Europe, with daily maximum temperatures 2 °C higher than the seasonal mean (1971–2000) over most of western Europe, and more than 3 °C higher in the east. It was the hottest and climatologically driest summer over the 1950–2015 study period for an area stretching from the eastern Czech Republic to Ukraine. For Europe, as a whole, it is among the six hottest and driest summers since 1950. High evapotranspiration rates combined with a lack of precipitation affected soil moisture and vegetation and led to record low river flows in several major rivers, even beyond the drought-hit region. The 2015 drought developed rather rapidly over the Iberian Peninsula, France, southern Benelux and central Germany in May and reached peak intensity and spatial extent by August, affecting especially the eastern part of Europe. Over the summer period, there were four heat wave episodes, all associated with persistent blocking events. Upper-level atmospheric circulation over Europe was characterized by positive 500 hPa geopotential height anomalies flanked by a large negative anomaly to the north and west (i.e., over the central North Atlantic Ocean extending to northern Fennoscandia) and another center of positive geopotential height anomalies over Greenland and northern Canada. Simultaneously, the summer sea surface temperatures (SSTs) were characterized by large negative anomalies in the central North Atlantic Ocean and large positive anomalies in the Mediterranean basin. Composite analysis shows that the western Mediterranean SST is strongly related to the occurrence of dry and hot summers over the last 66 years (especially over the eastern part of Europe). The lagged relationship between the Mediterranean SST and summer drought conditions established in this study can provide valuable skill for the prediction of drought conditions over Europe on interannual to decadal timescales.

scholarly journals Lagrangian matches between observations from aircraft, lidar and radar in a warm conveyor belt crossing orography

2021 ◽  
Vol 21 (7) ◽  
pp. 5477-5498
Author(s):  
Maxi Boettcher ◽  
Andreas Schäfler ◽  
Michael Sprenger ◽  
Harald Sodemann ◽  
Stefan Kaufmann ◽  
...  
Keyword(s):  
Baltic Sea ◽  
North Atlantic ◽  
Western Europe ◽  
Hydrological Cycle ◽  
Conveyor Belt ◽  
Western Mediterranean ◽  
The Baltic Sea ◽  
The Alps ◽  
The Mediterranean ◽  
The Baltic

Abstract. Warm conveyor belts (WCBs) are important airstreams in extratropical cyclones, often leading to the formation of intense precipitation and the amplification of upper-level ridges. This study presents a case study that involves aircraft, lidar and radar observations in a WCB ascending from western Europe towards the Baltic Sea during the Hydrological Cycle in the Mediterranean Experiment (HyMeX) and T-NAWDEX-Falcon in October 2012, a preparatory campaign for the THORPEX North Atlantic Waveguide and Downstream Impact Experiment (T-NAWDEX). Trajectories were used to link different observations along the WCB, that is, to establish so-called Lagrangian matches between observations. To this aim, an ensemble of wind fields from the global analyses produced by the European Centre for Medium-Range Weather Forecasts (ECMWF) Ensemble of Data Assimilations (EDA) system were used, which allowed for a probabilistic quantification of the WCB occurrence and the Lagrangian matches. Despite severe air traffic limitations for performing research flights over Europe, the German Aerospace Center (DLR) Falcon successfully sampled WCB air masses during different phases of the WCB ascent. The WCB trajectories revealed measurements in two distinct WCB branches: one branch ascended from the eastern North Atlantic over southwestern France, while the other had its inflow in the western Mediterranean. Both branches passed across the Alps, and for both branches Lagrangian matches coincidentally occurred between lidar water vapour measurements in the inflow of the WCB south of the Alps, radar measurements during the ascent at the Alps and in situ aircraft measurements by Falcon in the WCB outflow north of the Alps. An airborne release experiment with an inert tracer could confirm the long pathway of the WCB from the inflow in the Mediterranean boundary layer to the outflow in the upper troposphere near the Baltic Sea several hours later. The comparison of observations and ensemble analyses reveals a moist bias in the analyses in parts of the WCB inflow but a good agreement of cloud water species in the WCB during ascent. In between these two observations, a precipitation radar measured strongly precipitating WCB air located directly above the melting layer while ascending at the southern slopes of the Alps. The trajectories illustrate the complexity of a continental and orographically influenced WCB, which leads to (i) WCB moisture sources from both the Atlantic and Mediterranean, (ii) different pathways of WCB ascent affected by orography, and (iii) locally steep WCB ascent with high radar reflectivity values that might result in enhanced precipitation where the WCB flows over the Alps. The linkage of observational data by ensemble-based WCB trajectory calculations, the confirmation of the WCB transport by an inert tracer and the model evaluation using the multi-platform observations are the central elements of this study and reveal important aspects of orographically modified WCBs.

The Maghrib and the Medieval Mediterranean

2021 ◽  
Author(s):  
Allen Fromherz
Keyword(s):  
North Africa ◽  
Western Europe ◽  
Western Mediterranean ◽  
Business Partnerships ◽  
Architectural Styles ◽  
Mediterranean Culture ◽  
Political Alliances ◽  
12Th Century ◽  
The Mediterranean ◽  
High Level

According to traditional medieval histories—those that focus on the European West as a distinct civilization from North Africa and the Middle East—the advent of Islam in the 7th century was the final blow to the hope of a restored Rome, one that split the Mediterranean in two. In this version of the past, the Muslim conquests of the 7th century permanently divided Islamic North Africa and the Maghrib from the culture, society, and thinking of Christian Western Europe. In fact, the Maghrib was a major port of the culture, architecture, society, religious development, commerce, and politics of a common, medieval western Mediterranean zone. It is true that Christian and Muslim dynasties and states on both sides of the Mediterranean regularly saw themselves as enemies and rivals. The dogmatic and violent use of religion to justify enslavement, forced conversion, and conquest was common practice throughout this period. It is also true, however, that infidel Christian kings and unholy Muslim warriors formed alliances with one another, both across the sea and across faiths.1 The existence of a “convenient enemy” was often used as a means of gaining political or military advantage within Muslim or Christian lands. Popes and kings signed agreements with Muslim caliphs and Muslim sultans sought protection of Christian kings. In addition to high-level political alliances, ties between the Maghrib and Western Europe ran deep through the medieval economy. Commerce and business partnerships prospered and the 12th-century Commercial Renaissance lifted all boats. Christian, Muslim, and Jewish merchants took advantage of flows of trade and gold from Africa to the Mediterranean and into Europe. Dreams of conversion fostered unintended cultural interactions and exchanges, as was the case with the Franciscans and Christian mercenaries who journeyed deep into the Maghrib during this period. More than religion or politics, common artistic and architectural styles make perhaps the most compelling argument for a common, trans-Mediterranean culture.

Transnational Patriotism in the Mediterranean, 1800-1850

2018 ◽  
Author(s):  
Konstantina Zanou
Keyword(s):  
Western Europe ◽  
Political Space ◽  
The Balkans ◽  
Italian Peninsula ◽  
Nation States ◽  
Multicultural Context ◽  
The Common ◽  
Ugo Foscolo ◽  
The Mediterranean ◽  
The Republic

Transnational Patriotism in the Mediterranean, 1800–1850: Stammering the Nation investigates the long process of transition from a world of empires to a world of nation-states by narrating the biographies of a group of people who were born within empires but came of age surrounded by the emerging vocabulary of nationalism, much of which they themselves created. It is the story of a generation of intellectuals and political thinkers from the Ionian Islands who experienced the collapse of the Republic of Venice and the dissolution of the common cultural and political space of the Adriatic, and who contributed to the creation of Italian and Greek nationalisms. By uncovering this forgotten intellectual universe, Transnational Patriotism in the Mediterranean retrieves a world characterized by multiple cultural, intellectual, and political affiliations that have since been buried by the conventional narrative of the formation of nation-states. The book rethinks the origins of Italian and Greek nationalisms and states, highlighting the intellectual connection between the Italian peninsula, Greece, and Russia, and re-establishing the lost link between the changing geopolitical contexts of western Europe, the Mediterranean, and the Balkans in the Age of Revolutions. It re-inscribes important intellectuals and political figures, considered ‘national fathers’ of Italy and Greece (such as Ugo Foscolo, Dionysios Solomos, Ioannis Kapodistrias, and Niccolò Tommaseo), into their regional and multicultural context, and shows how nations emerged from an intermingling, rather than a clash, of ideas concerning empire and liberalism, Enlightenment and religion, revolution and conservatism, and East and West.

scholarly journals Direct dating reveals the early history of opium poppy in western Europe

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Aurélie Salavert ◽  
Antoine Zazzo ◽  
Lucie Martin ◽  
Ferran Antolín ◽  
Caroline Gauthier ◽  
...  
Keyword(s):  
Western Europe ◽  
Western Alps ◽  
Western Mediterranean ◽  
Opium Poppy ◽  
Radiocarbon Dates ◽  
Macrobotanical Remains ◽  
History Of ◽  
Temperate Europe ◽  
Radiocarbon Chronology ◽  
Botanical Remains

AbstractThis paper aims to define the first chrono-cultural framework on the domestication and early diffusion of the opium poppy using small-sized botanical remains from archaeological sites, opening the way to directly date minute short-lived botanical samples. We produced the initial set of radiocarbon dates directly from the opium poppy remains of eleven Neolithic sites (5900–3500 cal BCE) in the central and western Mediterranean, northwestern temperate Europe, and the western Alps. When possible, we also dated the macrobotanical remains originating from the same sediment sample. In total, 22 samples were taken into account, including 12 dates directly obtained from opium poppy remains. The radiocarbon chronology ranges from 5622 to 4050 cal BCE. The results show that opium poppy is present from at least the middle of the sixth millennium in the Mediterranean, where it possibly grew naturally and was cultivated by pioneer Neolithic communities. Its dispersal outside of its native area was early, being found west of the Rhine in 5300–5200 cal BCE. It was introduced to the western Alps around 5000–4800 cal BCE, becoming widespread from the second half of the fifth millennium. This research evidences different rhythms in the introduction of opium poppy in western Europe.

Chasing the phantom: biogeography and conservation of Vipera latastei-monticola in the Maghreb (North Africa)

2018 ◽  
Vol 39 (2) ◽  
pp. 145-161 ◽  
Author(s):  
Inês Freitas ◽  
Soumia Fahd ◽  
Guillermo Velo-Antón ◽  
Fernando Martínez-Freiría
Keyword(s):  
North Africa ◽  
Habitat Degradation ◽  
Conservation Status ◽  
Western Mediterranean ◽  
Niche Modelling ◽  
Habitat Transformation ◽  
Mountain Ranges ◽  
Management Actions ◽  
Suitable Space ◽  
The Impact

Abstract The Maghreb region (North Africa) constitutes a major component of the Mediterranean Basin biodiversity hotspot. During the last centuries, a consistent human population growth has led to an unprecedented rate of habitat transformation and loss in the region and thus, threatening its biodiversity. The Western Mediterranean viper Vipera latastei-monticola inhabits humid and subhumid areas in the main mountain ranges of the Maghreb, facing such threatening factors; however, its elusive character and rarity hindered data collection for distinct biological purposes. Here, we study the biogeographical patterns and conservation status of the Maghrebian V. latastei-monticola resulting from recent sampling campaigns in Morocco and Tunisia. We update species distribution, and integrate phylogeographic and ecological niche modelling analyses at both species and lineage level to identify suitable areas, and to evaluate the impact of anthropogenic transformation and level of protection of their suitable space. We identified four highly divergent mitochondrial lineages, including a new lineage endemic to the Western High Atlas, with allopatric distributions and restricted to mountain ranges, supporting the role of mountains as past climatic refugia. Despite the remoteness of suitable areas, we report widespread habitat degradation and identify the low effectiveness of the current protected areas system in preserving the species and lineages range. Our study shows the urgent need to apply management actions for the long-term conservation of this vulnerable species and suggests a revaluation of the specific status of V. monticola, as these populations likely represent an ecotype of V. latastei.

Problems of the Duration of the Eemian Interglacial in Europe North of the Alps

2002 ◽  
Vol 58 (1) ◽  
pp. 45-48 ◽  
Author(s):  
Charles Turner
Keyword(s):  
Mediterranean Region ◽  
Temperate Forest ◽  
Western Europe ◽  
Laminated Sediment ◽  
Annually Laminated Sediment ◽  
The Alps ◽  
The Mediterranean ◽  
Eemian Interglacial

AbstractSuggestions that the duration of the Eemian interglacial was about 11,000 yr, based on annually laminated sediment sequences in Germany, have been challenged in favor of a much longer interval. However, biostratigraphic evidence demonstrates why the Eemian sequences at Grande Pile and Ribains cannot be reliably used for alignment with the marine sequence, as applied by Kukla et al. (2002, this issue) to estimate the duration of this interglacial. The long chronology they propose would imply not just coniferous but, for up to 5000 yr, fully temperate forest in central France coexisting with treeless heath and steppe tundra conditions in northwestern Europe, an unlikely climatic and ecological scenario. The proposal that the Eemian Interglacial in western Europe lasted for 17,000 or even 23,000 yr is rejected. A duration of no more than 13,000 yr is preferred, at least for sites north of the Alps and Pyrenees. The duration of temperate conditions in the Mediterranean region is less certain.

First record of Sphoeroides spengleri (Osteichthyes: Tetraodontidae) in the Mediterranean Sea

2004 ◽  
Vol 84 (5) ◽  
pp. 1089-1090 ◽  
Author(s):  
J.A. Reina-Hervás ◽  
J.E. García Raso ◽  
M.E. Manjón-Cabeza
Keyword(s):  
Alien Species ◽  
Mediterranean Sea ◽  
First Record ◽  
Western Mediterranean ◽  
Alboran Sea ◽  
Total Length ◽  
The Mediterranean ◽  
Alborán Sea

The capture of a specimen of Sphoeroides spengleri (Osteichthyes: Tetraodontidae), 17 December 2000 and 29·7 mm total length, from the Málaga coast (Alborán Sea, western Mediterranean) represents the first record of a new alien species for Mediterranean waters.

scholarly journals Dispersal and Differentiation of Deep-Sea Mussels of the GenusBathymodiolus(Mytilidae, Bathymodiolinae)

2009 ◽  
Vol 2009 ◽  
pp. 1-15 ◽  
Author(s):  
Akiko Kyuno ◽  
Mifue Shintaku ◽  
Yuko Fujita ◽  
Hiroto Matsumoto ◽  
Motoo Utsumi ◽  
...  
Keyword(s):  
Gene Flow ◽  
Genetic Differentiation ◽  
Shallow Water ◽  
Deep Sea ◽  
Dispersal Ability ◽  
Evolutionary Transition ◽  
Significant Genetic Differentiation ◽  
Evolutionary Processes ◽  
High Dispersal ◽  
High Gene

We sequenced the mitochondrial ND4 gene to elucidate the evolutionary processes ofBathymodiolusmussels and mytilid relatives. Mussels of the subfamily Bathymodiolinae from vents and seeps belonged to 3 groups and mytilid relatives from sunken wood and whale carcasses assumed the outgroup positions to bathymodioline mussels. Shallow water mytilid mussels were positioned more distantly relative to the vent/seep mussels, indicating an evolutionary transition from shallow to deep sea via sunken wood and whale carcasses.Bathymodiolus platifronsis distributed in the seeps and vents, which are approximately 1500 km away. There was no significant genetic differentiation between the populations. There existed high gene flow betweenB. septemdierumandB. breviorand low but not negligible gene flow betweenB. marisindicusandB. septemdierumorB. brevior, although their habitats are 5000–10 000 km away. These indicate a high adaptability to the abyssal environments and a high dispersal ability ofBathymodiolusmussels.

Sign in / Sign up

Export Citation Format

Share Document