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530 publication(s) trouvée(s)
Article scientifique
Novel Endocranial Data on the Early Therocephalian Lycosuchus vanderrieti Underpin High Character Variability in Early Theriodont Evolution
Therocephalia is one of the major therapsid clades and ranges from the middle Permian to Middle Triassic. The earliest therocephalians …
Article scientifique
Tracking the Pliensbachian–Toarcian Karoo firewalkers: Trackways of quadruped and biped dinosaurs and mammaliaforms
The Karoo igneous rocks represent one of the largest continental flood basalt events (by volume) on Earth, and are not …
Article scientifique
Flux variability of phyto- and zooplankton communities in the Mauritanian coastal upwelling between 2003 and 2008
Abstract. Continuous multiyear records of sediment-trap-gained microorganism fluxes are scarce. Such studies are important to identify and to understand the …
Article scientifique
Environmental controls on marine productivity near Cape St. Francis, South Africa
Abstract. This study considers ocean–atmosphere influences on marine productivity over the shelf near Cape St. Francis, South Africa. Multiday estimates …
Article scientifique
Benthic foraminifera indicate Glacial North Pacific Intermediate Water and reduced primary productivity over Bowers Ridge, Bering Sea, since the Mid-Brunhes Transition
Abstract. The Mid-Brunhes Transition (MBT) saw an increase in the amplitude of glacial cycles expressed in ice core and deep …
Article scientifique
Acid-base adjustments and first evidence of denticle corrosion caused by ocean acidification conditions in a demersal shark species
) by the year 2300. Acute hypercapnia already occurs along the South African west and south coasts due to upwelling- …
Article scientifique
Evidence for a dominantly reducing Archaean ambient mantle from two redox proxies, and low oxygen fugacity of deeply subducted oceanic crust
Abstract Oxygen fugacity (ƒO 2 ) is an intensive variable implicated in a range of processes that have shaped the …
Article scientifique
Multidisciplinary Observing in the World Ocean’s Oxygen Minimum Zone Regions: From Climate to Fish — The VOICE Initiative
Multidisciplinary ocean observing activities provide critical ocean information to satisfy ever-changing socio-economic needs, and require coordinated implementation. The upper oxycline …
Article scientifique
Geophysical assessment of aquifer vulnerability and management: a case study of University of Nigeria, Nsukka, Enugu State
Abstract Seventeen vertical electrical soundings and seven electrical resistivity tomography profiles were carried out at the University of Nigeria, Nsukka, …
Article scientifique
Remote biomass burning dominates southern West African air pollution during the monsoon
Abstract. Vast stretches of agricultural land in southern and central Africa are burnt between June and September each year, which …
Article scientifique
Distribution, Interaction and Functional Profiles of Epiphytic Bacterial Communities from the Rocky Intertidal Seaweeds, South Africa
Interrelations between epiphytic bacteria and macroalgae are multifaceted and complicated, though little is known about the community structure, interaction and …
Article scientifique
Trichopolydesmidae from Cameroon, 2: A species-level reclassification of Afrotropical trichopolydesmids (Diplopoda, Polydesmida), with two new species and two new records from Cameroon, and two new species from the Nimba Mountains, Guinea
A revised classification of Afrotropical Trichopolydesmidae is presented. The fauna presently contains as many as 52 species in six recognized …
Article scientifique
Gnathia bermudensis (Crustacea, Isopoda, Gnathiidae), a new species from the mesophotic reefs of Bermuda, with a key to Gnathia from the Greater Caribbean biogeographic region
Gnathia bermudensissp. nov. is described from mesophotic coral ecosystems in Bermuda; it is distinguished by pronounced and pointed supraocular lobes, …
Article scientifique
Seismic reflection pattern and attribute analysis as a tool for defining reservoir architecture in ‘SABALO’ field, deepwater Niger Delta
Abstract An accurate definition of environment of sediment deposition is a sine qua non for characterizing and providing measures for …
Article scientifique
AVO analysis aids in differentiation between false and true amplitude responses: a case study of El Mansoura field, onshore Nile Delta, Egypt
Abstract The seismic amplitude versus offset (AVO) analysis has become a prominent in the direct hydrocarbon indicator in last decade, …
Article scientifique
Petrophysical interpretation and fluid substitution modelling of the upper shallow marine sandstone reservoirs in the Bredasdorp Basin, offshore South Africa
Abstract The fluid substitution method is used for predicting elastic properties of reservoir rocks and their dependence on pore fluid …
Article scientifique
Earthquake and typhoon trigger unprecedented transient shifts in shallow hydrothermal vents biogeochemistry
Abstract Shallow hydrothermal vents are of pivotal relevance for ocean biogeochemical cycles, including seawater dissolved heavy metals and trace elements …
Article scientifique
Early anthropoid femora reveal divergent adaptive trajectories in catarrhine hind-limb evolution
The divergence of crown catarrhines-i.e., the split of cercopithecoids (Old World monkeys) from hominoids (apes and humans)-is a poorly understood …
Article scientifique
Investigation of the behavior of the atmospheric dynamics during occurrences of the ozone hole's secondary effect in southern Brazil
Abstract. The Antarctic ozone hole (AOH) directly influences the Antarctic region, where its levels can reach values below 220 DU. …
Article scientifique
Crustal growth and reworking: A case study from the Erguna Massif, eastern Central Asian Orogenic Belt
Abstract Despite being the largest accretionary orogen on Earth, the record of crustal growth and reworking of individual microcontinental massifs …