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The last interglacial period (127-110 kyr ago) has been considered to be an analogue to the present interglacial period, the Holocene, which may help us to understand present climate evolution. But whereas Holocene climate has been essentially stable in Europe, variability in climate during the last interglacial period has remained unresolved, because(More)
Endemic planktonic diatoms are a major component of Lake Baikal sediments during interglacial periods. To investigate how these diatom assemblages are altered during sediment formation, quantitative plankton monitoring (1995–1998) was integrated with sediment trapping over 2 yr (1996–1997) in Baikal's southern basin (depth ϳ1,400 m). The traps consisted of(More)
The Tibetan Plateau is described as the "Roof of the World" averaging over 4000 m above sea level; it is remote, isolated, and presumed to be a pristine region. In order to study the history of atmospheric mercury (Hg) pollution and its spatial variation across the Plateau, lakes were chosen from three areas forming a north to south transect. Sediment cores(More)
Diatom dissolution in surface sediment samples from two regional lake datasets in the Northern Great Plains (NGP; n 5 64) and West Greenland (n 5 40) is assessed using a morphological approach categorizing valves during routine diatom analysis. Two dissolution indices are derived to parameterize diatom dissolution, and, when compared between two analysts in(More)
A growing body of scientific evidence suggests that greenhouse-gas pollution is largely responsible for global warming. Yet, it is also true that the climate system varies quite naturally on different timescales. Accurately predicting the course of future climate change requires an understanding of the natural variability of the climate system, as well as(More)
We explore possible quantitative relationships between diatom species and environmental data for Lake Baikal using multivariate techniques. Our approach differs from published studies in other regions (on training sets and transfer functions) because (1) although only one lake is examined, we use the internal lake gradients rather than gradients among lakes(More)
Ecological and biogeochemical processes in lakes are strongly dependent upon water temperature. Long-term surface warming of many lakes is unequivocal, but little is known about the comparative magnitude of temperature variation at diel timescales, due to a lack of appropriately resolved data. Here we quantify the pattern and magnitude of diel temperature(More)
In 2007, we published an article by Justin Gerlach reporting that the population of the Aldabra banded snail, Rhachistia aldabrae, had declined during the latter part of the twentieth century and had become extinct in the late 1990s [1]. This conclusion was based on the analysis of data from a range of shell collections made across the different islands of(More)
Last year, Experimental and Applied Acarology (EAA) has (again) experienced an increase in the number of submissions (an all-time high of 237 manuscripts received). Starting with the 2013 volume, the publisher allows us to publish on average 120 papers per year. Indeed, the realized rejection rate in 2013 was 47 %. The impact factor was 1.725 in 2011 and(More)
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