10069 to 10080 of 14037 results
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Hydrogen peroxide and ecdysone in the cryoprotective dehydration strategy of Megaphorura Arctica(Onychiuridae: Collembola)
Read more of: Hydrogen peroxide and ecdysone in the cryoprotective dehydration strategy of Megaphorura Arctica(Onychiuridae: Collembola)The Arctic springtail, Megaphorura arctica, survives sub-zero temperatures in a dehydrated state via trehalose-dependent cryoprotective dehydration. Regulation of trehalose biosynthesis is complex; based in part on studies in yeast and […]
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Eemian interglacial reconstructed from a Greenland folded ice core
Read more of: Eemian interglacial reconstructed from a Greenland folded ice coreEfforts to extract a Greenland ice core with a complete record of the Eemian interglacial (130,000 to 115,000 years ago) have until now been unsuccessful. The response of the Greenland […]
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Comparison of methods for determining key marine areas from tracking data
Read more of: Comparison of methods for determining key marine areas from tracking dataThere is an urgent need to identify key marine areas for conservation, particularly in the high seas. A range of techniques have been applied to tracking data from higher predators, […]
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The non-native chironomid Eretmoptera murphyi in Antarctica: erosion of the barriers to invasion
Read more of: The non-native chironomid Eretmoptera murphyi in Antarctica: erosion of the barriers to invasionAntarctica is the continent least affected by invasive species, but climate change and increasing human activity are increasing this threat. Antarctic terrestrial ecosystems generally have low biodiversity with simple community […]
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Multiple-colony winter habitat use by murres Uria spp. in the Northwest Atlantic Ocean: implications for marine risk assessment
Read more of: Multiple-colony winter habitat use by murres Uria spp. in the Northwest Atlantic Ocean: implications for marine risk assessmentLimited knowledge of year-round seabird distributions hinders efforts to assess consequences of anthropogenic threats and climate-induced changes in the marine environment. In particular, there is urgent need to understand how […]
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Shifting baselines in Antarctic ecosystems; ecophysiological response to warming in Lissarca miliaris at Signy Island, Antarctica
Read more of: Shifting baselines in Antarctic ecosystems; ecophysiological response to warming in Lissarca miliaris at Signy Island, AntarcticaThe Antarctic Peninsula has experienced a rapid increase in atmospheric temperature over the last 50 years. Whether or not marine organisms thriving in this cold stenothermal environment are able to […]
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Scaling down the analysis of seabird-fishery interactions
Read more of: Scaling down the analysis of seabird-fishery interactionsSeabird-fishery interactions are currently a major issue in marine conservation management. A common approach to quantifying the extent of interactions is to overlay density maps of seabird and fishing activities […]
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Antarctic ozone loss in 1979-2010: first sign of ozone recovery
Read more of: Antarctic ozone loss in 1979-2010: first sign of ozone recoveryA long-term ozone loss time series is necessary to understand the evolution of ozone in Antarctica. Therefore, we construct the time series using ground-based, satellite and bias-corrected multi-sensor reanalysis (MSR) […]
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Inferring sites of subglacial erosion using the Pb isotopic composition of ice-rafted feldspar: Examples from the Weddell Sea, Antarctica
Read more of: Inferring sites of subglacial erosion using the Pb isotopic composition of ice-rafted feldspar: Examples from the Weddell Sea, AntarcticaThe delivery of ice-rafted debris (IRD) from glaciated margins is a function of ice sheet dynamics. Shifts in supply and sourcing of IRD can therefore identify episodes of ice sheet […]
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Zonation in a cryptic Antarctic intertidal macrofaunal community
Read more of: Zonation in a cryptic Antarctic intertidal macrofaunal communityDespite the general view that the Antarctic intertidal conditions are too extreme to support obvious signs of macrofaunal life, recent studies have shown that intertidal communities can survive over annual […]
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Iron localization in Acarospora colonizing schist on Signy Island
Read more of: Iron localization in Acarospora colonizing schist on Signy IslandA small, inconspicuous lichen, Acarospora cf. badiofusca, was discovered colonizing ironstained quartz mica schists on the lower slope of Manhaul Rock, a recently exposed nunatak on the McLeod Glacier, Signy […]