A current debate concerns the timing and dynamics of marine ingression into the rift basins of the Central Atlantic Margin. Two scenarios of evolution are hypothesized for Late Norian to Rhaetian ...paleogeographic reconstructions: (i) marine ingression leading to salt generation through evaporation of seawater, or (ii) salt generation through groundwater evaporation within basins located far from marine influence. These hypotheses remain unproven. Along the northern margin of the Central Atlantic Margin, the so-called eastern North American rift system, the dolostone-dominated Iroquois Formation is the first unequivocal evidence of marine-influenced sedimentation. Age of this unit is not consensual, but it is dated as Early to Middle Jurassic. Our investigation of two cores (assumed here to be of Rhaetian age) from the Eurydice Formation in the Scotian and Orpheus basins provides the first convincing sedimentological evidence of Late Triassic marine ingressions into the eastern North American rift system. This was likely contemporaneous with the main transgressive events recorded in Western Europe. Evidence suggests the studied interval of Eurydice Formation was deposited by tide-dominated processes, possibly in an estuarine or deltaic environment. This work challenges the vision of a linear evolution of Central Atlantic Margin basins during the early stages of continental break-up and rifting; instead this story seems to be punctuated by marked and recurring changes in the depositional environments. Our findings have far reaching implications for the understanding of Triassic-Jurassic paleogeography and paleoclimates, biological evolution, and resources exploration. Additionally, these findings may have regional consideration for the development of major marine evaporite buildups and the timing of initial marine ingression during rift basin development.
The exposed sandy beach of Ladeira (Corrubedo Bay, NW Spain) was sampled during seven years (2003-2009) after the 'Prestige' oil spill (winter 2002-03), to determine interannual variations in the ...macroinfaunal community in two ways: (i) through ecological indices (species richness and abundances, Shannon's diversity and Pielou's evenness) and (ii) through the density of the most representative species. A clear zonation pattern was found, consisting of two zones: (i) the supralittoral, occupied by talitrid amphipods, isopods and insects, and (ii) the intertidal, where marine crustaceans and polychaetes prevailed. The amphipods Talitrus saltator and Talorchestia deshayesii dominated from the drift line upwards, and isopods (Eurydice spp.), polychaetes (Scolelepis spp.) and the amphipod Pontocrates arenarius dominated the intertidal. Univariate indices remained constant throughout the study period in the supralittoral, but they varied widely in the intertidal zone. Multivariate analysis showed that the Prestige oil spill scarcely affected the macroinfaunal community structure during the study period (2003-2009) and its effect was limited just to the first campaign (2003), six months after the 'Prestige' accident.
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Despite the small corpus of Ancient sources we have about Argead Macedonia’s royal successory customs, some details of our informations allow us to consider the use of marriages by the Macedonian ...King with a young wife as a potential way to determine his successor, as far as when the King died, he who could marry his last wife would be, in fact, a clear candidate for succession. We know indeed some examples about this practice, but maybe this examples can help us to understand Philip II’s last marriage with Cleopatra, Attalus’ niece, as a way to arrange succession for Alexander the Great, by the chance of marrying himself with Cleopatra-Eurydice. Alexander’s refuse to do so can be considered just an answer to Macedonian intrigues at court.
A pesar del pequeño corpus de fuentes antiguas que poseemos sobre las costumbres sucesorias de la familia real en la Macedonia Argéada, algunos detalles en nuestras informaciones nos permiten considerar el uso de matrimonios por los reyes macedonios con mujeres jóvenes como un medio potencial para determinar a su sucesor, puesto que cuando el rey moría, aquél que pudiese desposar a su última esposa sería, de hecho, un claro candidato a la sucesión. Conocemos ciertamente algunos ejemplos sobre esta práctica, pero quizás éstos podrían ayudarnos a entender el último matrimonio de Filipo II con Cleopatra-Eurídice, la sobrina de Átalo, como un medio para resolver la sucesión en favor de Alejandro Magno, ante la posibilidad de casarse él mismo con Cleopatra-Eurídice. El rechazo de Alejandro a ello puede considerarse sencillamente como una respuesta a las intrigas macedonias en la corte.
Eighteen sandy beaches were sampled along the 1659
km of the Galician coast (NW Spain) six months after the
Prestige oil-spill to study the impact of the fuel and the clean-up activities on the ...macroinfauna community. A transect was extended at each beach, from above the drift line to below the swash line at five sampled levels; at each level six 0.05
m
2 replicates were taken to a depth of 30
cm and sieved through a 1
mm mesh, and the organisms collected and preserved. Results were compared with previous data obtained using the same procedures.
The macroinfauna was numerically dominated by the amphipod
Pontocrates arenarius, the isopod genus
Eurydice, the polychaete
Scolelepis squamata, and the amphipod
Talitrus saltator. As a result of the
Prestige oil-spill and the clean-up activities, beach populations were reduced, with
Eurydice and
S. squamata as the most affected taxa.
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45.
Orpheus and Eurydice de Freston, Tom; Hargrave, Kiran Millwood
2017, 2017-05-18
eBook
The story of Orpheus's tragic quest into the underworld to rescue his true love Eurydice back from the dead is one that has haunted the western imagination for over 2,000 years through many tellings, ...re-tellings, appropriations and adaptations.A unique coming together of poetry, art and criticism, Orpheus and Eurydice explores the myth's impact through a graphic-poetic reconstruction of the story. Including critical reflections from leading thinkers, writers and critics, this is a compelling exploration of the enduring power of this tale.
Scinax Wagler, 1830 is a species-rich genus of amphibians with relatively few detailed chromosomal reports. In this work, cytogenetic analyses of Scinax auratus (Wied-Neuwied, 1821) and Scinax ...eurydice (Bokermann, 1968) were carried out based on conventional (Giemsa staining, Ag-NOR and C-banding) and cytomolecular (base-specific fluorochrome staining and fluorescence in situ hybridization – FISH of ribosomal probes) techniques. Both species shared the same karyotype, location of active nucleolar organizer regions on pair 11 and GC-rich heterochromatin, as reported for most species in Scinax ruber clade. Interpopulation chromosomal variation was observed in Scinax eurydice , indicating the occurrence of cryptic species. The mapping of 18S ribosomal genes by FISH is reported for the first time in both species.
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Genetic sampling of endangered species can inform conservation management and potentially aid the long-term survival of a species. However, when dealing with very small populations of rare species, ...the sacrifice of whole animals may not be desirable or permitted. We set out to develop a demonstrably non-lethal method of obtaining DNA from the federally-endangered Mitchell's satyr butterfly, Neonympha mitchellii mitchellii. Because of its endangered status we developed our methods on related species. In greenhouse and fields trials, we demonstrate that removal of small amounts of hind wing (2-3 mm²) has no significant impact on the behavior or survival of Vanessa cardui and Satyrodes eurydice. Based on these studies we were successful in obtaining a permit from the US Fish and Wildlife Service to sample DNA from N. m. mitchellii populations. We suggest that our results can be extended to the sampling of other rare butterfly species.
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Visual communication is widespread among several anuran families, but seems to be more common than currently thought. We investigated and compared visual communication in six species of an anuran ...community in the Brazilian Atlantic forest. Four are nocturnal species: Hyalinobatrachium uranoscopum (Centrolenidae), Hyla albomarginata, Hyla sp. (aff. ehrhardti), and Scinax eurydice (Hylidae), and two are diurnal species: Hylodes phyllodes and Hylodes asper (Leptodactylidae). For H. uranoscopum, H. albomarginata, S. eurydice, and H. phyllodes, this is the first record of visual communication. Observations were made at Núcleo Picinguaba, Parque Estadual da Serra do Mar, in the Municipality of Ubatuba, State of São Paulo, Brazil. Descriptions of behaviour were based on individuals observed in the field, using sequence sampling with continuous tape recording for behavioural observations. Eight new behaviours are described: body wiping, face wiping, jump display, leg kicking, limb lifting, mouth opening, toe flagging, and vocal sac display. Of the 42 anuran species known from Núcleo Picinguaba, at least six (approximately 14%) display visual communication. The evolution of visual signals in these species may be related to the availability of ambient light, the structural complexity of the habitat, and/or the ambient noise. They may also have evolved to aid in the location of the individual, to avoid physical combat, and/or may be a by-product of seismic communication.
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A wide-ranging look at the interplay of opera and political ideas through the centuries
The Politics of Operatakes readers on a fascinating journey into the entwined development of opera and ...politics, from the Renaissance through the turn of the nineteenth century. What political backdrops have shaped opera? How has opera conveyed the political ideas of its times? Delving into European history and thought and an array of music by such greats as Lully, Rameau, and Mozart, Mitchell Cohen reveals how politics-through story lines, symbols, harmonies, and musical motifs-has played an operatic role both robust and sotto voce.
Cohen begins with opera's emergence under Medici absolutism in Florence during the late Renaissance-where debates by humanists, including Galileo's father, led to the first operas in the late sixteenth century. Taking readers to Mantua and Venice, where composer Claudio Monteverdi flourished, Cohen examines how early operatic works likeOrfeoused mythology to reflect on governance and policy issues of the day, such as state jurisdictions and immigration. Cohen explores France in the ages of Louis XIV and the Enlightenment and Vienna before and during the French Revolution, where the deceptive lightness of Mozart's masterpieces touched on the havoc of misrule and hidden abuses of power. Cohen also looks at smaller works, including a one-act opera written and composed by philosopher Jean-Jacques Rousseau. Essential characters, ancient and modern, make appearances throughout: Nero, Seneca, Machiavelli, Mazarin, Fenelon, Metastasio, Beaumarchais, Da Ponte, and many more.
An engrossing book that will interest all who love opera and are intrigued by politics,The Politics of Operaoffers a compelling investigation into the intersections of music and the state.
Fluid inclusions hosted in rock salt from the Triassic Argo Formation in the Canadian Atlantic continental margin were studied to investigate the nature and origin of petroleum fluids in them. ...Inclusions were studied in two wells: Glooscap-C63 and Weymouth-A45. The pillow-shaped salt body intersected by the Glooscap-C63 well is autochthonous, and the salt is transparent and colorless compared with that in the allochthonous, canopy-diaper-shaped body cut by the Weymouth-A45 well which is translucent and buff-colored. Aqueous (AFI), petroleum (PFI), and heterogeneously trapped, mixed petroleum - aqueous (MFI) fluid inclusions were identified using transmitted and fluorescent microscopy, and representative samples were analyzed microthermometrically. Petroleum-bearing fluid inclusions (PFI and MFI) are more common and contain more concentrated petroleum phases in the allochthonous salts of Weymouth-A45 well. Based on microthermometric studies, the AFI and MFI in Glooscap-C63 salt mostly belong to NaCl-H2O and NaCl-H2O-petroleum systems, respectively; in contrast, those of Weymouth-A45 belong to NaCl-MgCl2-H2O and (or) NaCl-CaCl2-H2O and NaCl-MgCl2-H2O-petroleum and (or) NaCl-CaCl2-H2O-petroleum systems, respectively. Each of the AFI, PFI, and MFI types consists of different phases. The medians of Tf (freezing temperature), Tim (initial melting temperature), Te (Eutectic temperature), Tm (final melting (peritectic) temperature), and Th (homogenization temperature) in the AFI and MFI in the salts of Glooscap-C63 well are (-82, -75 °C), (-39, -38 °C), (-25, -24 °C), (-1.8, -3 °C), and (291, 287 °C), respectively. The corresponding medians for the Weymouth-A45 well are (-71, -78 °C), (-52, -52 °C), (-37, -38 °C), (-2.7, -3 °C), and (122, 20 °C), respectively. The median Th of PFI in Glooscap-C63 and Weymouth-A45 salts are 79 and 23 °C, respectively. The most probable source rocks for the petroleum are the shales of the Late Triassic - Early Jurassic Eurydice Formation which is widely distributed at depth underlying the Argo salt.
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