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2021, Journal of Biogeography
Aims(a) To determine the contribution of current macro‐environmental factors in explaining the phylogenetic structure of European forest vegetation, (b) to map and describe spatial patterns in their phylogenetic structure and (c) to examine which lineages are the most important contributors to phylogenetic clustering and whether their contribution varies across forest types and regions.LocationEurope.TaxonAngiosperms.MethodsWe analysed the phylogenetic structure of 61,816 georeferenced forest vegetation plots across Europe considering alternative metrics either sensitive to basal (ancient evolutionary dynamics) or terminal (recent dynamics) branching in the phylogeny. We used boosted regression trees to model metrics of the phylogenetic structure as a function of current macro‐environmental factors. We also identified clades encompassing significantly more taxa than under random expectation in phylogenetically clustered plots.ResultsPhylogenetic clustering was driven by climatic str...
Oikos
Tree diversity is key for promoting the diversity and abundance of forest‐associated taxa in EuropeDiversity and Distributions
Spatial patterns of genus‐level phylogenetic endemism in the tree flora of Mediterranean Europe2021 •
AimThe Mediterranean Basin is a major hotspot of plant biodiversity, including forest trees. Over the past centuries, Mediterranean forests have been fragmented and over‐exploited, to which the threats of climate change are now added. Our aim is to better understand patterns and processes of tree biodiversity in the Mediterranean and to provide indicators complementing the traditional approaches to biodiversity conservation based on species counts and occurrences, using georeferenced phylogenetic diversity and endemism analyses in a spatial ecological context.LocationMediterranean Europe.MethodsUsing a dated phylogeny of the 64 Euro‐Mediterranean tree genera, we calculated phylogenetic diversity for all 50 × 50 km2 grid cells spanning Mediterranean Europe (n = 643) and compared values with those obtained for genus‐level taxonomic diversity. Then, we tested the relative influence of geography, past and present climate, and soil on tree diversity (phylogenetic or taxonomic) and its ge...
Quaternary International
Persistence of tree taxa in Europe and Quaternary climate changes2010 •
The possibility that some populations of tree species may have survived multiple Quaternary glacial–interglacial cycles in central Europe is discussed. The alternation of forest and non-forest phases observed in long pollen records shows a substantial correspondence with the variations in global ice volume and indicates that the last glacial has been one of the most unfavourable periods for tree survival in Europe. Therefore the species that have survived the last glacial period in central Europe may have reasonably persisted also during less severe glacial periods and ultimately since the beginning of the Quaternary. The history of Picea and Corylus exemplifies the possibility of a continuous presence of trees in Europe. Recognizing the persistence of tree populations is necessary to assess the timing of their genetic diversification. The importance of extending the observation of the species behaviour to the time scale of the whole Quaternary is highlighted, in order to explain the modern distribution of populations and species and to reach a better understanding of evolutionary processes.
Journal of Ecology
Taxonomic, phylogenetic and functional diversity of understorey plants respond differently to environmental conditions in European forest edges2010 •
A hundred pollen and plant macrofossil records from the Iberian Peninsula, Southern France, the Italian Peninsula, Greece and the Aegean, and the southwestern Black Sea area formed the basis for a review of the Quaternary distribution and extirpation of tree populations from Southern Europe. Following a discussion of the caveats/challenges about using pollen data, the Quaternary history of tree taxa has been reconstructed with attention to Taxodium/Glyptostrobus, Sciadopitys, Cathaya, Cedrus, Tsuga, Eucommia, Engelhardia, Carya, Pterocarya, Parrotia, Liquidambar, and Zelkova. The timing of extinction, distributed over the whole Quaternary, appears very diverse from one region to the other, in agreement with current biodiversity in Southern Europe. The geographical patterns of persistence/disappearance of taxa show unexpected trends and rule out a simple North to South and/or West to East trend in extirpations. In particular, it is possible to detect disjunct populations (Engelhardia), long-term persistence of taxa in restricted regions (Sciadopitys), distinct populations/species/genera in different geographical areas (Taxodium type). Some taxa that are still widespread in Europe have undergone extirpation in Medi-terranean areas in the lateglacial period and Holocene (Buxus, Carpinus betulus, Picea); they provide an indication of the modes of disappearance of tree populations that may be useful to evaluate correctly the vulnerability of modern fragmented plant populations. The demographic histories of tree taxa obtained by combined palaeobotanical and genetic studies is a most challenging field of research needed not only to assess species/population differentiation, but also to reach a better understanding of extinction processes , an essential task in the current global change scenario.
BEFAR 401
L'organisation militaire de la confédération béotienne (447-171 av. J.-C.), par Thierry LucasLa guerre antique est bien plus qu’une affaire cantonnée au domaine militaire : c’est un fait total, à la fois politique, social, culturel, qui structure durablement les sociétés qui la font ou qui cherchent à s’en prémunir. Le livre de Thierry Lucas entend traiter de front cette question majeure à travers le cas de la Béotie aux époques classique et hellénistique, sur le temps long, au cours de cinq chapitres thématiques. L’enquête prend appui sur les récits de bataille de l’époque classique, qui donnent un aperçu du fonctionnement de l’armée béotienne au moment de la guerre du Péloponnèse et de la période d’hégémonie thébaine, et sur la riche documentation épigraphique de l’époque hellénistique. Ces données, croisées avec les apports de l’archéologie, de l’iconographie ou de la numismatique, permettent de dresser le tableau d’un système militaire qui imprégnait l’ensemble de la société béotienne, qu’il s’agisse des institutions politiques, de la religion ou encore de la culture. Même pour l’époque hellénistique, malgré le rôle en retrait de la Confédération sur la scène internationale, les sources épigraphiques nous montrent un koinon doté d’organes militaires bien rodés et pleinement fonctionnels, constamment adaptés aux évolutions des pratiques guerrières, et adossé à une culture militaire. Cet ouvrage propose en somme, pour la première fois, une synthèse complète, inscrite dans le temps long, sur un système militaire fédéral antique. Il serait trompeur d’y voir simplement un volume de plus d’études béotiennes : bien plus qu’une analyse strictement régionale, ce travail constitue un véritable paradigme d’histoire militaire pour le monde grec. Ancien élève de l’École Normale Supérieure de Paris, Thierry Lucas est docteur en archéologie de l’Université Paris 1 Panthéon-Sorbonne et ancien membre de l’École française d’Athènes. Ses travaux portent sur la guerre et l’architecture militaire aux époques classiques et hellénistiques. Il a dirigé des travaux de terrain à Akraiphia et à Mégare. Ancient warfare is much more than a military affair: it is a total phenomenon, at once political, social and cultural, and it has a lasting impact on the societies that wage war or seek to shelter themselves against it. Thierry Lucas’ book tackles this major issue, focusing on the case of ancient Boeotia in the Classical and Hellenistic periods through five thematic chapters. This study is based on battle narratives from the Classical period, which provide an insight into the workings of the Boeotian army at the time of the Peloponnesian War and during the period of Theban hegemony, as well as on the rich epigraphic documentation from the Hellenistic period. These data, combined with archaeological, iconographic, and numismatic evidence, draw a picture of a military system that permeates all aspects of Boeotian society, in terms of institutions, religion and culture. Even in the Hellenistic period, despite the Confederation’s wilting role on the international stage, the epigraphic evidence shows a koinon with well-honed and fully functional military institutions, constantly adapting to evolving warfare practices while keeping to a deeply rooted military culture. In a nutshell, this book offers the first comprehensive and long-term overview of an ancient federal military system. It would be misleading to see it as just another volume on Boeotian studies: far more than a strictly regional analysis, this study is a true a paradigm of military history in the ancient Greek world. Alumnus of the École Normale Supérieure, Paris, Thierry Lucas holds a PhD in archaeology from the University Paris 1 Panthéon-Sorbonne and is a former member of the French School at Athens. His work focuses on warfare and military architecture in the Classical and Hellenistic periods. He has directed fieldwork at Akraiphia and Megara.
Although I have studied the Byzantine-Ottoman transition through Constantinople, I have come to the conclusion that there are still many missing links in the chain regarding the Byzantine House. I am rapidly developing a list of resources for this study. The list I am sharing only covers the Byzantine House. Those of you who follow my research know that I am sharing a list of travelers who traveled in the Byzantine – Seljuk – Ottoman Lands. In this list, the information of approximately 600 travelers from the Byzantine Period has been compiled. For the missing links mentioned above, the impressions of these 600 travelers are traced. I do not claim that the list I have shared is accurate and complete.
Editura Cartea Romaneasca
Alexandru D. Xenopol - Istoria românilor din Dacia Traiană #14 - Domnia lui Cuza Vodă - 1859-1866. Partea a 2-a1925 •
2024 •
Superconductor Science and Technology
Additive manufacturing materials for structural optimisation and cooling enhancement of superconducting motors in cryo-electric aircraft2023 •
Exploration Geophysics
Borehole radar survey to explore limestone cavities for the construction of a highway bridge2004 •
Elevating Oil and Gas Production - How Advanced Equipment is Reshaping the Industry
Elevating Oil and Gas Production: How Advanced Equipment is Reshaping the IndustrySleep and Breathing
The association between high risk of sleep apnea, comorbidities, and risk of COVID-19: a population-based international harmonized study2021 •
2018 •
Chemical engineering transactions
Creating Incremental Revenue from Industrial Cherry Wastes2021 •