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Eastern
Kinds of Eastern Terms modified by Eastern Selected AbstractsPollen morphology, leaf surfaces, mycobiota diversity and leaf spots of three species of Zygophyllum growing along Cairo-Suez desert road, Eastern (Arabian) desert in EgyptFEDDES REPERTORIUM, Issue 1-2 2007S. M. El Naggar Three native species of Zygophyllum: Z. coccinum L., Z. decumbens L. and Z. simplex L. (Zygophyllaceae) have been investigated morphologically, palynologically and mycologically. Twenty-two fungal species belonging to 11 genera were collected from leaf surfaces (11 genera and 22 species) and anthers/ pollen grains (7, 13) of Zygophyllum coccinum, Z. decumbens and Z. simplex on Czapek-Dox agar at 25 °C. Fungal diversity of the two microhabitats is basically similar and the most prevalent fungi were Alternaria alternata /A. phragmospora, Cladosporium cladosporioides /C. herbarum and Ulocladium botrytis /U. consortiale. Alternaria alternata, Cladosporium cladosporioides and C. herbarum -leaf spots were rarely recorded in the three studied plant species. Leaf lamina size and sculpture of the studied taxa almost seem to be the most reliable factors of the fungal biodiversity on the studied plant species. On the other hand, reticulate-micro reticulate pollen type is the only pollen type recorded in the present study which reflects that the very narrow range of spectrum of fungal biodiversity between the studied plant species. (© 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) Pollenmorphologie, Blattoberfläche, mykobiotische Diversität und Blattflecken von drei Zygophyllum -Arten entlang der Wüstenstraße Kairo,Suez, Östliche (Arabische) Wüste Ägyptens Drei einheimische Zygophyllum -Arten (Z. coccinum, Z. decumbens und Z. simplex (Zygophyllaceae) wurden morphologisch, palynologisch und mykologisch untersucht. 22 Pilzarten aus elf Gattungen wurden von Blattoberflächen gesammelt (11 Gattungen, 22 Arten) und Antheren/Pollenkörner (7, 13) von Zygophyllum coccinum, Z. decumbens und Z. simplex mittels Czapek-Dox agar bei 25 °C untersucht. Die Pilzdiversität beider Mikrohabitate ist basisähnlich und die häufigsten Taxa sind: Alternaria alternata /A. phragmospora, Cladosporium cladosporioides /C. herbarum und Ulocladium botrytis /U. consor- tiale. Blattflecken von Alternaria alternata, Cladosporium cladosporioides und C. herbarum wurden auf den untersuchten Pflanzen selten verzeichnet. Die Größe der Blattlamina und die Skulptur der untersuchten Taxa scheinen die zuverlässigsten (häufigsten) Faktoren für die Pilz-Biodiversität auf den untersuchten Pflanzen zu sein. Andererseits ist der retikulate-microretikulate Pollentyp in vorliegender Studie der einzige Pollentyp, der dieses enge Spektrum der Pilz-Biodiversität zwischen den untersuchten Pflanzen aufzeigt (widerspiegelt). [source] Outside Directors (Distinguished Scholar of 2002 Keynote Address to the Annual Meeting of the Eastern Finance Association)FINANCIAL REVIEW, Issue 1 2003John J. McConnell First page of article [source] Performing ,Ostalgie': Leander Haussmann's SonnenalleeGERMAN LIFE AND LETTERS, Issue 2 2003Paul Cooke The following article examines Leander Haußmann's hit youth comedy Sonnenallee (1999). In particular it attempts to challenge many reviewers who saw the film as nothing more than a self-indulgent piece of ,Ostalgie' which trivialises the oppressive reality of life in the GDR. Instead, it argues that the film deliberately highlights the competing tensions at work within contemporary nostalgia for the East German state. On the one hand, Sonnenallee constructs ,Ostalgie' as a response to fears among many East Germans that the true nature of their everyday experience is being elided from the historical record. Through the use of an intricate network of Eastern and Western cultural references, the film attempts to counter this impulse by highlighting the importance of both these cultural traditions to youth in the GDR. In so doing the film translates the experience of East Germans into a cultural language that West Germans will understand, thereby ,normalising' this experience. On the other hand, and seeming to contradict this project, the film also challenges simplistically rose-tinted views of the East. Consequently, the film forces the East German spectator to reflect upon, and ultimately reject, any manifestations of Ostalgie which would ostensibly call for a return to the GDR. [source] Helicobacter pylori CagA: Analysis of Sequence Diversity in Relation to Phosphorylation Motifs and Implications for the Role of CagA as a Virulence FactorHELICOBACTER, Issue 3 2001Doyle J. Evans Jr Abstract CagA is transported into host target cells and subsequently phosphorylated. Clearly this is a mechanism by which Helicobacter pylori could take control of one or more host cell signal transduction pathways. Presumably the end result of this interaction favors survival of H. pylori, irrespective of eventual damage to the host cell. CagA is noted for its amino acid (AA) sequence diversity, both within and outside the variable region of the molecule. The primary purpose of this review is to examine how variation in the type and number of CagA phosphorylation sites might determine the outcome of infection by different strains of H. pylori. The answer to this question could help to explain the widely disparate results obtained when H. pylori CagA status has been compared to type and severity of disease outcome in different populations, that is in different countries. Analysis of all available CagA sequences revealed that CagA contains both tyrosine phosphorylation motifs (TPMs) and cyclic-AMP-dependent phosphorylation motifs (CPMs). There are two potential CPMs near the N-terminus of CagA and at least two in the repeat region; these are not all equally well conserved. We also defined a 48-residue AA sequence, which includes the N-terminal TPM at tyrosine (Y)-122, which distinguishes between Eastern (Hong Kong-Taiwan-Japan-Thailand) H. pylori isolates and those from the West (Europe-Africa-the Americas-Australia). All 28 of the Eastern type CagA proteins have a functional N-terminal TPM whereas 11 of 47 (23.4%) of the Western type contain an inactive motif, with threonine (T) replacing the critical aspartic acid (D) residue. Only 13 of 24 (54%) known CagA sequences have an active TPM in the repeat region and only one has two TPMs in this region. The potential TPM near the C-terminus of CagA is not likely to be important since only 3 of 24 (12.5%) sequences were found to be intact. Protein database searches revealed that the AA sequence immediately following the TPM at Y-122 in CagA is homologous with a pair of PDZ domains which are common in signal transducing proteins, particularly tyrosine phosphatases. This provides a theoretical link between CagA and many of the observed responses of host cells to H. pylori. In summary, not all CagA proteins are equal in their potential for initiating host cell responses via signal transduction pathways. The degree of functional diversity of this protein depends upon which phosphorylation motifs are critical to the biological activity of CagA. [source] Navigating a Way through Plurality and Social ResponsibilityINTERNATIONAL JOURNAL OF ART & DESIGN EDUCATION, Issue 1 2008David A. GallArticle first published online: 21 JAN 200 Teachers need to have a clearer understanding of the dynamic process effecting change in culture and identity if they are to overcome fears about teaching diversity. This article draws on Eastern and Western insights on culture to clarify its dynamic process. In particular, teachers need to be aware of the two phases of culture: in one it appears as an organic integrity that suffers violence when any aspect of it is changed, removed or replaced; in the other it appears as a mechanical assemblage of parts momentarily caught in a particular relationship, comfortable with change. Each moment requires appropriate curriculum planning and pedagogical practice. Crucial to achieving that end is keeping the two phases distinct while exploring and exposing their relationship in culture and identity transformation. This will help a great deal to alleviate teachers'fears about teaching diversity or multiculturalism. [source] Globalization vs. localization: global food challenges and local solutionsINTERNATIONAL JOURNAL OF CONSUMER STUDIES, Issue 3 2010Quaye Wilhelmina Abstract The objective of this study was to examine the effect of global,local interactions on food production and consumption in Ghana, and identify possible local solutions. Primary data were collected using a combination of quantitative-qualitative methods, which included focus group discussions and one-on-one interviews. Approximately 450 household heads were randomly selected and interviewed between August 2007 and August 2008 in Eastern, Central, Upper East and Northern Regions of Ghana. Findings revealed increasing consumption of foreign rice as opposed to decreasing consumption of local rice and other staples like millet, sorghum and yam because of global,local interactions. However, opportunities exist to re-localize production-consumption patterns through the use of ,glocal foods' like improved ,koose and waakye'. Referencing the situation in Ghana, the study recommends improved production and processing practices backed with appropriate technologies that reflect changing consumption dynamics in order to take full advantage of opportunities created as a result of global,local interactions. [source] HLA class I polymorphism in a Moroccan population from CasablancaINTERNATIONAL JOURNAL OF IMMUNOGENETICS, Issue 3 2002F. Choukri Summary We have studied the distribution of HLA-A and -B alleles and haplotypes by sequence-specific primer amplification in a sample of 100 unrelated healthy individuals belonging to both Berber and Arabic-speaking groups from the region of Casablanca in Morocco. Among the 17 HLA-A and 23 HLA-B alleles observed, the most frequent were HLA-A2 (21%), -A1 (11%), -A3 (10%), -B44 (11.4%), -B50 (9.9%), -B5(8.5%) and -B35 (6.5%). Six two-locus haplotypes were observed with a frequency above 5%: A2-B50 (9.6%), A23-B44 (7.4%), A2-B15 (6.4%), A68-B39 (5.3%), A1-B51 (5.3%) and A68-B44 (4.3%). Our data confirm that, on the basis of genetic distances, the majority of present-day North Africans from Morocco are closely related to Berbers and also to Iberians. They cluster apart from Middle-Eastern Mediterranean populations, and show greater genetic distances to Eastern and other Mediterranean populations. This study will serve as a reference for further anthropological studies, as well as studies of HLA and disease associations. [source] ,Willing Is Not Choosing': Some Anthropological Implications of Dyothelite ChristologyINTERNATIONAL JOURNAL OF SYSTEMATIC THEOLOGY, Issue 1 2007IAN A. McFARLAND Modern discomfort with Augustine presupposes an anthropology that equates genuine agency with freedom of choice. In defending the principle that Christ has a fully human will, Maximus challenges this presupposition by denying that a human agent's willing is to be identified with choosing. Thus, while Maximus does not share Augustine's doctrine of original sin, he offers a framework within which to explore possible convergence between Eastern and Western understandings of the will. [source] When and How Regions Become Peaceful: Potential Theoretical Pathways to Peace,INTERNATIONAL STUDIES REVIEW, Issue 2 2005Benjamin Miller The objective of this essay is to address the following two puzzles. First, what best accounts for the transition from war to peace in different regions at different times? Second, what is the best explanation for variations in the level of regional peace that exists in different regions in a particular time period? Consider the differences that exist today in the Middle Eastern, South American, and Western European regions. A theoretical framework is proposed that is intended to integrate the regional and international perspectives on regional peace. It establishes linkages between different mechanisms that can lead to regional peace and the emergence of different levels of peace as well as presents three potential theoretical pathways to peace. An argument is made that the underlying cause of regional war propensity is the extent of the state-to-nation imbalance in a region. Accordingly, different peacemaking strategies produce different levels of peace based on their treatment of the state-to-nation problem. A distinction is made between the effects of different approaches to peacemaking and the conditions for their success. In effect, peacemaking strategies bring about the transition from war to peace only if certain conditions exist in the region. The advantages and disadvantages of the three mechanisms are illustrated through three case studies, each exemplifying a specific strategy and level of peace that have resulted from the presence of certain conditions in the region: the Middle East (a transition to cold peace in the 1990s), South America (the evolution of normal peace across the twentieth century), and Western Europe (the emergence of warm peace since the 1950s). [source] HIV Epidemics in Africa: What Explains the Variations in HIV Prevalence?IUBMB LIFE, Issue 4-5 2002Anne Buvé Abstract There are large differences in the prevalence of HIV infection between different regions in sub-Saharan Africa, ranging from less than 10% in pregnant women in most of West Africa, to over 25% in pregnant women in large cities in Eastern and Southern Africa. These differences in HIV prevalence are in many instances due to differences in rate of spread of the virus. The multicenter study on factors determining the differential spread of HIV in four African cities tried to identify factors that could explain differences in spread of HIV between different regions in sub-Saharan Africa. The study was conducted in four cities, including two cities with a relatively low HIV prevalence (Cotonou in Bénin and Yaoundé in Cameroon) and two cities with a high HIV prevalence (Kisumu in Kenya and Ndola in Zambia). The difference in HIV prevalence between the four cities could not be explained by differences in sexual behavior. Any differences in sexual behavior were outweighed by differences in factors that influence HIV transmission, i.e. male circumcision and HSV-2 infection. These findings have important implications for the design of interventions. [source] Marine biogeography of southern Australia: phylogeographical structure in a temperate sea-starJOURNAL OF BIOGEOGRAPHY, Issue 12 2003Jonathan M. Waters Abstract Aim, To test whether marine biogeographical patterns observed at the community level are also important within species. It is postulated that historical hydrogeographic barriers have driven in situ diversification. Location, The intertidal and shallow subtidal zones of southern Australia, New Zealand and nearby islands. Australia's temperate marine communities are characterized by a high degree of endemism and show strong biogeographical structure along an east,west axis. Methods, Phylogeographical analysis of the widespread asteriid sea-star Coscinasterias muricata Verrill across southern Australia and New Zealand. Forty-two samples from 27 locations were included in phylogenetic analyses of mitochondrial (CO1; control region) and nuclear (ITS2) DNA sequences. Results, Analysis of mtDNA revealed a deep phylogenetic split within Australian C. muricata, strongly correlated with latitude. ,Northern' haplotypes (latitude , 37.6° S, nine sites, 15 samples) were 7.3,9.4% divergent from ,southern' haplotypes (latitude , 37.6° S, 19 sites, 27 samples), consistent with late Pliocene separation. Eastern and western representatives of the ,northern' clade were 0.5,1.0% divergent, probably reflecting Pleistocene isolation. The ,southern' clade of Australia is also represented in New Zealand, indicating Pleistocene oceanic dispersal. Nuclear DNA (ITS2) sequences yielded relatively little phylogenetic resolution, but were generally congruent with mtDNA-based groupings. Main conclusions, The phylogeographical pattern detected within Australian C. muricata closely resembles marine biogeographical groupings proposed on the basis of community and species distributions. Recurring evolutionary patterns may have been driven by the hydrographic history of southern Australia. Specifically, we suggest that Plio-Pleistocene temperature change and the repeated opening and closure of Bass Strait promoted allopatric divergence and perhaps cryptic speciation in C. muricata. [source] Mindfulness in Thailand and the United States: a case of apples versus oranges?JOURNAL OF CLINICAL PSYCHOLOGY, Issue 6 2009Michael S. Christopher Abstract The study and practice of mindfulness is rapidly expanding in Western psychology. Recently developed self-report measures of mindfulness were derived from Western operationalizations and cross-cultural validation of many of these measures is lacking, particularly in Buddhist cultures. Therefore, this study examined the measurement equivalence of the Kentucky Inventory of Mindfulness Skills (KIMS) and Mindful Attention Awareness Scale (MAAS) among Thai (n=385) and American (n=365) college students. Multigroup confirmatory factor analysis models fit to the data revealed that the KIMS lacked configural invariance across groups, which precluded subsequent invariance tests, and although the MAAS demonstrated configural, metric, and partial scalar invariance, there was no significant latent mean MAAS difference between Thais and Americans. These findings suggest that Eastern and Western conceptualizations of mindfulness may have important differences. © 2009 Wiley Periodicals, Inc. J Clin Psychol 65: 1,23, 2009. [source] The effect of religiosity and ethnic origin on direct and indirect aggression among males and females: Some Israeli findings ,AGGRESSIVE BEHAVIOR, Issue 4 2002Simha F. Landau Abstract Israeli society is characterized by significant internal divisions. Two of the most salient of these divisions within the Jewish population relate to (1) religiosity (religious vs. secular Jews) and (2) ethnic origin (Eastern [Asian and North African] vs. Western [European and American]). The aim of this study was to assess the effects of these social divisions on aggressive behavior and victimization to aggression among Israeli children. Three types of aggressive behavior (physical, verbal, and indirect) were investigated by means of peer estimation. The sample (N = 630) was composed of three age groups (8-, 11-, and 15-year-olds). The findings indicate that in general, secular respondents scored higher on aggressive behavior and victimization than their religious counterparts, and respondents of Eastern origin scored higher than those of Israeli or Western origin. The effect of both religiosity and ethnic origin was stronger among girls than among boys. Ethnic origin had no effect on any of the boys' measures but did affect these measures among girls. Among boys, religiosity affected verbal and indirect aggression and victimization. Among girls, indirect aggression and victimization, as well as victimization to physical aggression, were affected by religiosity. As to the effect of age, similar to previous studies, in all types of aggression and victimization, the 11-year-olds scored highest and the 15-year-olds scored lowest. Differences between the three types of aggression and victimization, as well as various interactions between the variables, are reported. The results are discussed within the wider context of the role of religiosity and ethnic origin in Israeli society. Aggr. Behav. 28:281,298, 2002. © 2002 Wiley-Liss, Inc. [source] Building on the indigenous: theory and method of marriage therapy in contemporary Eastern and Western AfricaJOURNAL OF FAMILY THERAPY, Issue 4 2000Augustine Nwoye This paper highlights the distinctive approach to marriage therapy in use by therapists in two regions of Africa. It illustrates that marital therapy in these two regions is based on role theory framework and follows, in its execution, the pattern of the judicial trial model. It traces adaptations made by contemporary marriage therapists to ensure that while building their present practices on this essentially indigenous/court-room trial model, they are able to remain open to outside influences from other models of marriage. [source] Post-Formation Processes in Eastern and Western European Joint Ventures*JOURNAL OF MANAGEMENT STUDIES, Issue 2 2006Keith D. Brouthers abstract This study examines the post-formation processes that firms use to create successful international joint ventures (IJVs). Scholars have suggested that IJV performance is dependent on the post-formation processes firms institute to overcome barriers to success created by differences in national culture, trust, ownership positions and control mechanisms. Based on a longitudinal study of eight eastern/western European IJVs, our study provides insights into these post-formation processes, how these processes relate to each other, and how they relate to managers' evaluations of IJV success. [source] Family Relationships and Adolescent Psychosocial Outcomes: Converging Findings From Eastern and Western CulturesJOURNAL OF RESEARCH ON ADOLESCENCE, Issue 4 2004Julia Dmitrieva This study investigated the role of parent,adolescent relationships in mediating the association between family-related negative life events and adolescent depressive symptoms and problem behaviors among 1,696 eleventh graders from the United States (n=201), China (n=502), Korea (n=497), and Czech Republic (n=496). Results indicated that perceived parental involvement and parent,adolescent conflict mediated the link between family-related life events and adolescent depressed mood. The path from family-related life events to adolescent problem behaviors was mediated by perceived parental involvement, parent,adolescent conflict, and perceived parental sanctions of adolescent misconduct. With the exception of minor cross-cultural differences in the magnitude of associations among variables, this study revealed considerable similarity in the association of family factors with adolescent internalizing and externalizing symptomatology. The findings contribute to the growing literature on culture-general developmental processes. [source] Differences and similarities in the approach to hepatocellular carcinoma between Eastern and Western institutionsLIVER TRANSPLANTATION, Issue S2 2004Guido Torzilli [source] Eastern and Western Poor Cod (Trisopterus minutus capelanus) Populations in the Mediterranean Sea: Evidence from Allozyme and Minisatellite LociMARINE ECOLOGY, Issue 4 2003Valeria Mattiangeli Abstract., Nine allozyme and two minisatellite loci were used to investigate potential genetic differentiation among three samples of Mediterranean poor cod, Trisopterus minutus capelanus, from the Gulf of Lion, the Tuscan Archipelago and the Aegean Sea. Both types of markers showed consistent results, with FST values of 0.0262 and 0.0296 (P < 0.0015, after Bonferroni correction for multiple tests) for allozymes and minisatellites, respectively. Allele frequency heterogeneity tests between pairs of samples showed a clear separation between the two western Mediterranean samples (Gulf of Lion, Tuscan Archipelago) and the eastern one (Aegean Sea). The results indicate that at least two reproductively isolated populations of poor cod occur in the Mediterranean. [source] Irenaeus, Derrida and Hospitality: On the Eschatological Overcoming of ViolenceMODERN THEOLOGY, Issue 2 2003Hans Boersma God's hospitality or welcome of human beings into eternal life can be approached by means of Western (kataphatic) or Eastern (apophatic) strategies. I explore Derrida's understanding of "pure hospitality", which contains parallels with apophatic theology. I then appeal to Irenaeus's eschatology, which exhibits a fruitful tension between kataphatic and apophatic elements, to provide a transcendent warrant for human hospitality. On the one hand, the Bishop's millenarian opposition to Gnosticism implies the continuation of the substance of creation in the eternal Kingdom. On the other hand, Irenaeus's emphasis on deification and visio Dei suggests a future of "pure hospitality" and openness. [source] Fire and ice: volcanic and glacial impacts on the phylogeography of the New Zealand forest fern Asplenium hookerianumMOLECULAR ECOLOGY, Issue 21 2007LARA D. SHEPHERD Abstract In the Southern Hemisphere there has been little phylogeographical investigation of forest refugia sites during the last glacial. Hooker's spleenwort, Asplenium hookerianum, is a fern that is found throughout New Zealand. It is strongly associated with forest and is a proxy for the survival of woody vegetation during the last glacial maximum. DNA sequence data from the chloroplast trnL-trnF locus were obtained from 242 samples, including c. 10 individuals from each of 21 focal populations. Most populations contained multiple, and in many cases unique, haplotypes, including those neighbouring formerly glaciated areas, while the predominant inference from nested clade analysis was restricted gene flow with isolation by distance. These results suggest that A. hookerianum survived the last glacial maximum in widespread populations of sufficient size to retain the observed phylogeography, and therefore that the sheltering woody vegetation must have been similarly abundant. This is consistent with palynological interpretations for the survival in New Zealand of thermophilous forest species at considerably smaller distances from the ice sheets than recorded for the Northern Hemisphere. Eastern and central North Island populations of A. hookerianum were characterized by a different subset of haplotypes to populations from the remainder of the country. A similar east,west phylogeographical pattern has been detected in a diverse array of taxa, and has previously been attributed to recurrent vulcanism in the central North Island. [source] Hybridization between mtDNA-defined phylogeographic lineages of black ratsnakes (Pantherophis sp.)MOLECULAR ECOLOGY, Issue 12 2006H. LISLE GIBBS Abstract Phylogeographic analyses using mitochondrial DNA (mtDNA) have revealed many examples of apparently deep historical subdivisions (,phylogroups') within many vertebrates. It remains unclear whether these phylogroups represent independently evolving, adaptively differentiated lineages or groups that show little functional differentiation and, hence, will merge on contact. Here, we use mtDNA sequence data to evaluate the phylogeographic relationships between two of the northernmost populations of black ratsnakes (Pantherophis obsoletus complex) in Ontario, Canada and previously analysed populations in the United States. We then use population-level analyses to evaluate the level of adaptive divergence between previously established mtDNA phylogroups. Phylogenetic analyses show that southern Ontario snakes have mtDNA haplotypes that fall within the Central mtDNA phylogroup, as designated by Burbrink et al. (2000). In contrast, snakes in eastern Ontario carry either Central or Eastern-specific haplotypes. Within the hybrid region, we found highly variable frequencies of mtDNA haplotypes among isolated sub-populations, no association between variation in cytonuclear (mtDNA) and nuclear (microsatellite DNA) markers, no difference in survival or reproductive success among snakes with different mtDNA haplotypes, and no effect of mate similarity in mtDNA on female clutch size. These results argue that the Eastern and Central phylogroups have merged in this region, likely due to a lack of adaptive differentiation between individuals in each lineage. Hence, in these snakes, phylogeographic structure in mtDNA is more a reflection of historical isolation rather than adaptive divergence. The observed reticulation between lineages and lack of evidence for hybrid disgenesis also bears on the classification of these lineages as distinct species. [source] Cryptic Neogene vicariance and Quaternary dispersal of the red-spotted toad (Bufo punctatus): insights on the evolution of North American warm desert biotasMOLECULAR ECOLOGY, Issue 10 2005JEF R. JAEGER Abstract We define the geographical distributions of mitochondrial DNA (mtDNA) lineages embedded within a broadly distributed, arid-dwelling toad, Bufo punctatus. These patterns were evaluated as they relate to hypothesized vicariant events leading to the formation of desert biotas within western North America. We assessed mtDNA sequence variation among 191 samples from 82 sites located throughout much of the species' range. Parsimony-based haplotype networks of major identified lineages were used in nested clade analysis (NCA) to further elucidate and evaluate shallow phylogeographic patterns potentially associated with Quaternary (Pleistocene,Holocene) vicariance and dispersal. Phylogenetic analyses provided strong support for three monophyletic lineages (clades) within B. punctatus. The geographical distributions of the clades showed little overlap and corresponded to the general boundaries of the Peninsular Desert, and two continental desert regions, Eastern (Chihuahuan Desert,Colorado Plateau) and Western (Mojave,Sonoran deserts), geographically separated along the Rocky Mountains and Sierra Madre Occidental. The observed divergence levels and congruence with postulated events in earth history implicate a late Neogene (latest Miocene,early Pliocene) time frame for separation of the major mtDNA lineages. Evaluation of nucleotide and haplotype diversity and interpretations from NCA reveal that populations on the Colorado Plateau resulted from a recent, likely post-Pleistocene, range expansion from the Chihuahuan Desert. Dispersal across historical barriers separating major continental clades appear to be recent, resulting in secondary contacts in at least two areas. Given the observed contact between major clades, we speculated as to why the observed deep phylogeographic structure has not been eroded during the multiple previous interglacials of the Pleistocene. [source] Phylogeography and genetic structure of northern populations of the yellow warbler (Dendroica petechia)MOLECULAR ECOLOGY, Issue 6 2000Emmanuel Milot Abstract Phylogeographic patterns of intraspecific variation can provide insights into the population-level processes responsible for speciation and yield information useful for conservation purposes. To examine phylogeography and population structure in a migratory passerine bird at both continental and regional geographical scales, we analysed 344 bp of mitochondrial DNA (mtDNA) control region sequence from 155 yellow warblers (Dendroica petechia) collected from seven locations across Canada and from Alaska. There is a major subdivision between eastern (Manitoba to Newfoundland) and western (Alaska and British Columbia) populations which appears to have developed during the recent Pleistocene. Some localities within these two regions also differ significantly in their genetic composition, suggesting further subdivision on a regional geographical scale. Eastern and western birds form distinct phylogeographic entities and the clustering of all western haplotypes with two eastern haplotypes suggests that the western haplotypes may be derived from an eastern lineage. Analyses based on coalescent models support this explanation for the origin of western haplotypes. These results are consistent with important features of Mengel's model of warbler diversification. From a conservation perspective they also suggest that individual populations of migrant birds may form demographically isolated management units on a smaller scale than previously appreciated. [source] DNA barcode discovers two cryptic species and two geographical radiations in the invasive drosophilid Zaprionus indianusMOLECULAR ECOLOGY RESOURCES, Issue 3 2008AMIR YASSIN Abstract Comparing introduced to ancestral populations within a phylogeographical context is crucial in any study aiming to understand the ecological genetics of an invasive species. Zaprionus indianus is a cosmopolitan drosophilid that has recently succeeded to expand its geographical range upon three continents (Africa, Asia and the Americas). We studied the distribution of mitochondrial DNA (mtDNA) haplotypes for two genes (CO-I and CO-II) among 23 geographical populations. mtDNA revealed the presence of two well-supported phylogenetic lineages (phylads), with bootstrap value of 100%. Phylad I included three African populations, reinforcing the African-origin hypothesis of the species. Within phylad II, a distinct phylogeographical pattern was discovered: Atlantic populations (from the Americas and Madeira) were closer to the ancestral African populations than to Eastern ones (from Madagascar, Middle East and India). This means that during its passage from endemism to cosmopolitanism, Z. indianus exhibited two independent radiations, the older (the Eastern) to the East, and the younger (the Atlantic) to the West. Discriminant function analysis using 13 morphometrical characters was also able to discriminate between the two molecular phylads (93.34 ± 1.67%), although detailed morphological analysis of male genitalia using scanning electron microscopy showed no significant differences. Finally, crossing experiments revealed the presence of reproductive barrier between populations from the two phylads, and further between populations within phylad I. Hence, a bona species status was assigned to two new, cryptic species: Zaprionus africanus and Zaprionus gabonicus, and both were encompassed along with Z. indianus and Zaprionus megalorchis into the indianus complex. The ecology of these two species reveals that they are forest dwellers, which explains their restricted endemic distribution, in contrast to their relative cosmopolitan Z. indianus, known to be a human-commensal. Our results reconfirm the great utility of mtDNA at both inter- and intraspecific analyses within the frame of an integrated taxonomical project. [source] Middle East and North Africa take growing share of EU's gas marketOIL AND ENERGY TRENDS, Issue 8 2007Article first published online: 13 AUG 200 The Middle East and North Africa are becoming an increasingly important source of supply for the European Union (EU). The 25 member-states now import some 17% of all the gas they consume from this region. A decade ago, its share was only 9%. This is perhaps not too surprising given the Middle Eastern and North African share of global gas reserves. It is likely moreover that the EU will seek even more of its gas from this source, despite the fears of some energy planners that Europe is already too dependent on what they regard as a politically unstable region. An even bigger worry, however, might be that Middle East and North Africa may not have sufficient gas to meet the increased needs of both the EU and their own home markets, as the latest study by OET's Global Energy Review suggests (see 'Middle Eastern Gas: An under-used Resource?' at http://oilandenergytrends.com). [source] MORE THAN ONE WAY TO STUDY A BUILDING: APPROACHES TO PREHISTORIC HOUSEHOLD AND SETTLEMENT SPACEOXFORD JOURNAL OF ARCHAEOLOGY, Issue 3 2006MARION CUTTING Summary. This article reviews a number of research methodologies used to record household and settlement architecture and assesses their value in the investigation of the human use of prehistoric built space. It exemplifies, through case studies, five broad approaches to, and research techniques associated with, the investigation of such architecture. These approaches are: architectural form; the spatial distribution of activities; continuity and standardization; the relationship between built and non-built space; and human patterns of movement. Then, drawing mainly on Near Eastern, and particularly Anatolian, material, it shows how a sixth approach, the use of ethnographic observation and analogy, provides insights into functional and seasonal variations in spatial use, patterns of movement and social organization. It identifies seven categories of data collection and nine observations drawn from the ethnographic material which together provide an investigative and interpretative framework for the study of early farming communities in the Near East and elsewhere. [source] Eine Gabe an St. Nimmerlein?, Zur zeitlichen Dimension der SchuldenbremsePERSPEKTIVEN DER WIRTSCHAFTSPOLITIK, Issue 3 2010Friedrich Heinemann We consider two scenarios: a proportional income shock and a shock on employment which increases the rate of unemployment. We find that automatic stabilizers absorb 38 per cent of a proportional income shock in the EU, compared to 32 per cent in the US. In the case of an unemployment shock 48 per cent of the shock is absorbed in the EU, compared to 34 per cent in the US. Under the assumption that only credit constrained households adjust current spending on consumption goods to current disposable income, the cushioning of disposable income leads to a demand stabilization of 26 to 35 per cent in the EU and 19 per cent in the US. There is large heterogeneity within the EU. Automatic stabilizers in Eastern and Southern Europe are much lower than in Central and Northern European countries. With respect to income stabilization, Germany is above the European average for both scenarios. Demand stabilization in Germany is weaker because the number of liquidity constrained households is below the EU average. [source] Wie wirken die automatischen Stabilisatoren in der Wirtschaftskrise?PERSPEKTIVEN DER WIRTSCHAFTSPOLITIK, Issue 2 2010Deutschland im Vergleich zu anderen EU-Staaten und den USA We consider two scenarios: a proportional income shock and a shock on employment which increases the rate of unemployment. We find that automatic stabilizers absorb 38 percent of a proportional income shock in the EU, compared to 32 percent in the US. In the case of an unemployment shock 48 percent of the shock is absorbed in the EU, compared to 34 percent in the US. Under the assumption that only credit constrained households adjust current spending on consumption goods to current disposable income, the cushioning of disposable income leads to a demand stabilization of 26 to 35 percent in the EU and 19 percent in the US. There is large heterogeneity within the EU. Automatic stabilizers in Eastern and Southern Europe are much lower than in Central and Northern European countries. With respect to income stabilization, Germany is above the European average for both scenarios. Demand stabilization in Germany is weaker because the number of liquidity constrained households is below the EU average. [source] Autosomal microsatellite variability of the Arrernte people of AustraliaAMERICAN JOURNAL OF HUMAN BIOLOGY, Issue 1 2008M. A. Alfonso-Sánchez The genomic diversity of the Arrernte people of Australia or caterpillar people was investigated utilizing 13 autosomal short tandem repeat (STR) markers. Significant departures from Hardy,Weinberg equilibrium were detected at the D18S51, TPOX and CSF1PO loci, which persisted after applying the Bonferroni correction. Gene diversity values oscillate between 0.6302 (CSF1PO) and 0.8731 (D21S11). Observed heterozygosity (Ho) ranges from 0.2632 (D18S51) to 0.8333 (vWA) and is lower than the expected heterozygosity (He) for 12 of the 13 loci analyzed. The genetic relationships of the Arrernte with Middle Eastern, East Asian, South Asian and Indian populations were analyzed by distance-based methods, including Neighbor-Joining trees and nonmetric multidimensional scaling. In addition, the genetic contribution of the populations included in the analysis to the Arrernte gene pool was estimated utilizing weighted least square coefficients. Although the Arrernte population exhibits a remarkable level of genetic differentiation, results of the phylogeographic analyses based on autosomal microsatellite data suggest a certain degree of genetic relatedness between the Arrernte tribe of Australia and populations from the Indian subcontinent. In contrast, the STR diversity analyses failed to detect substantial East Asian contribution to the genetic background of the Arrernte group. Am. J. Hum. Biol., 2008. © 2007 Wiley-Liss, Inc. [source] Human Y-chromosome short tandem repeats: A tale of acculturation and migrations as mechanisms for the diffusion of agriculture in the Balkan PeninsulaAMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY, Issue 3 2010Sheyla Mirabal Abstract Southeastern Europe and, particularly, the Balkan Peninsula are especially useful when studying the mechanisms responsible for generating the current distribution of Paleolithic and Neolithic genetic signals observed throughout Europe. In this study, 404 individuals from Montenegro and 179 individuals from Serbia were typed for 17 Y-STR loci and compared across 9 Y-STR loci to geographically targeted previously published collections to ascertain the phylogenetic relationships of populations within the Balkan Peninsula and beyond. We aim to provide information on whether groups in the region represent an amalgamation of Paleolithic and Neolithic genetic substrata, or whether acculturation has played a critical role in the spread of agriculture. We have found genetic markers of Middle Eastern, south Asian and European descent in the area, however, admixture analyses indicate that over 80% of the Balkan gene pool is of European descent. Altogether, our data support the view that the diffusion of agriculture into the Balkan region was mostly a cultural phenomenon although some genetic infiltration from Africa, the Levant, the Caucasus, and the Near East has occurred. Am J Phys Anthropol, 2010. © 2010 Wiley-Liss, Inc. 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