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Eurasia, etc ; Echinoparyphium; Echinostoma; genes; intestines; mitochondria; mitochondrial genome; monophyly; parasites; parasitology; transfer RNA; Show all 11 Subjects
Abstract:
... Echinoparyphium aconiatum (Digenea: Echinostomatidae) is an intestinal parasite of anatid and snail-eating birds. In Eurasia, it is also common in lymnaeid snails, which may serve as the first and second intermediate hosts. The systematics of its genus, Echinoparyphium, have long been inadequate, with poor descriptions and extensive synonymy. To provide a basis for developing new genetic markers f ...
... During the Middle Paleolithic in Eurasia, the production of deliberate, abstract engraving on bone or stone materials is a rare phenomenon. It is now widely accepted that both anatomically modern humans and hominins that predate them have produced deliberate engravings associated with symbolic behavior. Within the Levantine Middle Paleolithic context, only five examples of intentional engravings a ...
Eurasia, etc ; Formica; Siberia; mitochondria; East Asia; Show all 5 Subjects
Abstract:
... Ants of the «Formica picea—F. candida» complex are widespread across Eurasia. However, it is still a matter of debate if it constitutes one or two species. In this study, we collected a sample of specimens from different parts of Eurasia, sequenced the mitochondrial cox1 and cytb genes, as well as three nuclear loci—wg, Top1, and ITS2—and analyzed the available published data. We found this comple ...
Eurasia, etc ; convection; deformation; extrusion; geophysics; models; research; China; Show all 8 Subjects
Abstract:
... During the last 50 Ma, the eastern Eurasian continent has experienced widespread crustal and lithospheric deformation. However, mechanisms in creating such widespread intra‐continental deformation are still not well understood. Here, we present a 3‐D S‐wave velocity model of the northeastern Tibetan Plateau and adjacent regions by jointly inverting teleseismic body and surface waves. The resulting ...
Eurasia, etc ; North Atlantic Oscillation; climate; cold; dynamics; winter; Show all 6 Subjects
Abstract:
... Observations reveal distinct interdecadal winter Eurasian cold anomaly (ECA) centered over central Eurasia (40°–60° N, 60°–120° E), with a more southwestward extension during 1965–1976 than during 2002–2013. In this paper, Ural blockings (UB) in association with the Interdecadal Pacific Oscillation (IPO) and Atlantic Multi-decadal Oscillation (AMO) are analyzed to explain the ECA’s decadal change ...
Eurasia, etc ; climate change; data collection; environment; fire regime; risk; Show all 6 Subjects
Abstract:
... Climate change has driven an increase in the frequency and severity of fires in Eurasian boreal forests. A growing number of field studies have linked the change in fire regime to post-fire recruitment failure and permanent forest loss. In this study we used four burned area and two forest loss datasets to calculate the landscape-scale fire return interval (FRI) and associated risk of permanent fo ...
Eurasia, etc ; case studies; ecosystems; environment; phenology; snowpack; North America; Show all 7 Subjects
Abstract:
... Snow cover plays an important role in maintaining ecosystems. However, knowledge on how snow cover phenology (SP) modulates ecosystem productivity (EP), especially for the lower- and higher-productivity ecosystems, is limited yet. The situation becomes more embarrassed when asking a more in-depth question as to the macroecological pattern of SP modulating EP – does this process act with the neighb ...
Eurasia, etc ; latitude; monsoon season; research; summer; variance; wind; China; Show all 8 Subjects
Abstract:
... The current study investigates the interannual variation of the Tibetan Plateau summer monsoon (TPSM) and its response to atmospheric teleconnection patterns over Eurasia is examined in the present study. The interannual variation of TPSM is characterized by anomalous low pressure and cyclonic convergence over the lower atmosphere of the Tibetan Plateau (TP), as well as increased (decreased) preci ...
Eurasia, etc ; air; climate; cold; ice; research; temperature; Arctic region; China; Show all 9 Subjects
Abstract:
... The frequency and the intensity of extreme temperature events have both increased globally because of the effects of climate warming. Such extreme events should be distinct in high-elevation areas owing to the phenomenon of elevation-dependent warming; however, corroborating evidence remains limited because of scarce observations. This study used the percentile method to identify annual extreme te ...
Eurasia, etc ; Acipenser schrenckii; fish roe; natural resources conservation; sturgeon; watersheds; Show all 6 Subjects
Abstract:
... Demographic modelling can reveal options for improved conservation management, especially for rare or long-lived species not amenable to experimentation. Sturgeon (Acipenseridae) include many such species, endangered by demand for caviar, their unfertilized roe, and by dams blocking their migrations. Restocking of sturgeon populations with farm-raised individuals has probably prevented extinctions ...
Eurasia, etc ; Chrysomelidae; Japan; lakes; phylogeny; stomach; China; Europe; North America; Show all 9 Subjects
Abstract:
... Macroplea japana (Jacoby, 1885) has not been collected in Japan since the 1960s and was thought to be locally extinct. Recently, we collected this species from submerged aquatic plants growing in the nearshore zone of Lake Biwa, Shiga Prefecture, where it had previously been recorded from the stomach contents of pochards in the 1950s. We conducted a molecular phylogenetic analysis to identify the ...
Eurasia, etc ; Ardea; Calidris; spring; stopover sites; Netherlands; Western European region; Show all 7 Subjects
Abstract:
... Ruffs Calidris pugnax migrate from wintering areas in West-Africa and Europe to breeding grounds in northern Eurasia, using stopover sites along the way. At one such stopover site in southwest Friesland (53°N, The Netherlands), we studied variation in the timing of individual stopover based on 6474 Ruffs colour-ringed in 2004–2012. 43% of males and 22% of females were recorded in the study area in ...
Daniel L. R. Hodson; Pierre-Antoine Bretonnière; Christophe Cassou; Paolo Davini; Nicholas P. Klingaman; Katja Lohmann; Jorge Lopez-Parages; Marta Martín-Rey; Marie-Pierre Moine; Paul-Arthur Monerie; Dian A. Putrasahan; Christopher D. Roberts; Jon Robson; Yohan Ruprich-Robert; Emilia Sanchez-Gomez; Jon Seddon; Retish Senan
Eurasia, etc ; analysis of variance; atmospheric circulation; climate models; dynamics; Pacific Ocean; Show all 6 Subjects
Abstract:
... North Atlantic sea surface temperatures (SSTs) underwent pronounced multidecadal variability during the twentieth and early twenty-first century. We examine the impacts of this Atlantic Multidecadal Variability (AMV), also referred to as the Atlantic Multidecadal Oscillation (AMO), on climate in an ensemble of five coupled climate models at both low and high spatial resolution. We use a SST nudgin ...
Eurasia, etc ; data collection; deformation; earthquakes; geophysics; global positioning systems; research; tectonics; Europe; Show all 9 Subjects
Abstract:
... Crustal deformation and seismicity in Europe are still poorly understood. Seismic activity is classically ascribed to crustal strain rates generated by edge‐driven tectonic forces. However, crustal deformation is not only due to tectonic loading, but can also be related to isostatic and mantellic processes that induce additional stress and strain on the crust by flexure. The influence that those p ...
Eurasia, etc ; Earth system science; aerosols; biosphere; carbon dioxide; dust; satellites; uncertainty; India; Show all 9 Subjects
Abstract:
... Top-down modeling estimates are among the most reliable information available on the CO₂ fluxes of the earth system. The inadequate coverage of CO₂ observing stations over the tropical regions adds a limitation to this estimate, especially when the satellite XCO₂ is strictly screened for cloud contamination, aerosol, dust, etc. In this study, we investigated the potential benefit of a global groun ...
Eurasia, etc ; Anoplocephalidae; Marmota; Spermophilus; genetic variation; ground squirrels; mitochondria; parasites; phylogeny; steppes; Show all 10 Subjects
Abstract:
... Cestodes Ctenotaenia marmotae are a widespread parasite of Eurasian ground squirrels. Being the only valid species of its genus, it has been recorded in ten host species from the genera Marmota and Spermophilus. Its definitive hosts live in similar ecological conditions and their area covers a wide geographical territory. Therefore, it remained unclear whether C. marmotae is a single species and h ...
Eurasia, etc ; arable soils; forest steppe; forests; habitat destruction; habitats; land use; secondary succession; Show all 8 Subjects
Abstract:
... The thousands of kilometers of forest steppes in Eurasia belong to the most threatened ecosystems thanks to habitat loss. We have limited knowledge on the recolonization ability of forest steppe species to date, which is the reason we examined the textural and structural changes in these species during secondary succession in areas of different former land use. The species number, cover, and diver ...
Eurasia, etc ; carbon; carbon monoxide; economic development; greenhouse gases; infrastructure; research; seasonal variation; China; Show all 9 Subjects
Abstract:
... Carbon monoxide (CO) is an important indirect greenhouse gas and has been measuring by many sites around the world. In this study, a 14-years (2004–2007 as well as 2010–2019) observed atmospheric CO record at the Mount. Waliguan (WLG), the only global station of the World Meteorological Organization (WMO) and Global Atmosphere Watch (GAW) in Eurasia, was presented. The characteristics of atmospher ...
Eurasia, etc ; Polygonaceae; color; exocarp; new species; plant taxonomy; seed germination; synapomorphy; Central Asia; Show all 9 Subjects
Abstract:
... Exocarp anatomy of 30 species of Atraphaxis has been studied to shed light on possible diagnostic and phylogenetic significance of carpological characters. The diversity of the exocarp structure observed in Atraphaxis was comparable to that in the entire tribe Polygoneae. The size of the exocarp cells, the size and shape of the lumen and its branching were the most variable. The radial size of the ...
Eurasia, etc ; Passeriformes; Siberia; autumn; winter; Africa; Caspian Sea; Central Asia; Eastern European region; Show all 9 Subjects
Abstract:
... The arid belt of Central Asia is a major barrier for many migrating songbirds. It has to be crossed by passerines that breed in Siberia and winter in Africa, but also by the species that breed in eastern Europe and winter in southern and south-eastern Asia. Many passerine migrants breeding in Siberia and wintering in Africa avoid crossing the deserts in autumn; instead, they make a detour to the n ...