6349 to 6360 of 13838 results
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The importance of understanding annual and shorter-term temperature patterns and variation in the surface levels of polar soils for terrestrial biota
Read more of: The importance of understanding annual and shorter-term temperature patterns and variation in the surface levels of polar soils for terrestrial biotaGround temperatures in the top few centimetres of the soil profile are key in many biological processes yet remain very poorly documented, especially in the polar regions or over longer […]
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‘Business as usual’: drilling predation across the K-Pg mass extinction event in Antarctica
Read more of: ‘Business as usual’: drilling predation across the K-Pg mass extinction event in AntarcticaA survey of 759 predatory drill holes in Late Cretaceous and Paleogene molluscan and serpulid worm prey from Seymour Island (Antarctica) has allowed exploration of the effects of the K-Pg […]
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The internal structure of the Brunt Ice Shelf from ice-penetrating radar analysis and implications for ice shelf fracture
Read more of: The internal structure of the Brunt Ice Shelf from ice-penetrating radar analysis and implications for ice shelf fractureThe rate and direction of rift propagation through ice shelves depends on both the stress field and the heterogeneity, or otherwise, of the physical properties of the ice. The Brunt […]
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A New Daily Observational Record from Grytviken, South Georgia: Exploring Twentieth-Century Extremes in the South Atlantic
Read more of: A New Daily Observational Record from Grytviken, South Georgia: Exploring Twentieth-Century Extremes in the South AtlanticThe sparse nature of observational records across the mid- to high latitudes of the Southern Hemisphere limits the ability to place late-twentieth-century environmental changes in the context of long-term (multidecadal […]
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Non-native microbial introductions: what risk to Antarctic ecosystems?
Read more of: Non-native microbial introductions: what risk to Antarctic ecosystems?Antarctica’s biodiversity and its intrinsic values are potentially at risk from the introduction of non-native species, derived from a range of sources including human activities. Whilst controls on introducing plants […]
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The devil is in the detail: small-scale sexual segregation despite large-scale spatial overlap in the wandering albatross
Read more of: The devil is in the detail: small-scale sexual segregation despite large-scale spatial overlap in the wandering albatrossSexual segregation in foraging habitat occurs in many marine predators and is usually attributed to competitive exclusion, different parental roles of each sex or niche specialisation associated with sexual size […]
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Life in the intertidal: cellular responses, methylation and epigenetics
Read more of: Life in the intertidal: cellular responses, methylation and epigenetics1.Phenotypic plasticity is essential for the persistence of organisms under changing environmental conditions but the control of the relevant cellular mechanisms including which genes are involved and the regulation of […]
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Spacecraft surface charging induced by severe environments at geosynchronous orbit
Read more of: Spacecraft surface charging induced by severe environments at geosynchronous orbitSevere and extreme surface charging on geosynchronous spacecraft is examined through the analysis of 16 years of data from particles detectors on-board the Los Alamos National Laboratory spacecraft. Analysis shows […]
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Arctic Sea Ice Loss in Different Regions Leads to Contrasting Northern Hemisphere Impacts
Read more of: Arctic Sea Ice Loss in Different Regions Leads to Contrasting Northern Hemisphere ImpactsTo explore the mechanisms linking Arctic sea ice loss to changes in midlatitude surface temperatures, we conduct idealized modeling experiments using an intermediate general circulation model and with sea ice […]
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Relativistic electron microburst events: Modeling the atmospheric impact
Read more of: Relativistic electron microburst events: Modeling the atmospheric impactRelativistic electron microbursts are short-duration, high-energy precipitation events that are an important loss mechanism for radiation belt particles. Previous work to estimate their atmospheric impacts found no significant changes in […]
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Basal settings control fast ice flow in the Recovery/Slessor/Bailey Region, East Antarctica
Read more of: Basal settings control fast ice flow in the Recovery/Slessor/Bailey Region, East AntarcticaThe region of Recovery Glacier, Slessor Glacier and Bailey Ice Stream, East Antarctica, has remained poorly explored, despite representing the largest potential contributor to future global sea level rise on […]