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Correction of common lead in U-Pb analyses that do not report 204Pb
The presence of common lead contamination in zircons used for U–Pb geochronology is a potentially serious source of error. Traditionally, common lead is measured by analysis of 204Pb, and theExpand
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Ecological thresholds and regime shifts: approaches to identification.
There is an apparent gap between the prominence of present theoretical frameworks involving ecological thresholds and regime shifts, and the paucity of efforts to conduct simple tests and quantitative inferences on the actual appearance of such phenomena in ecological data. Expand
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Carbon, nitrogen, and phosphorus content of freshwater zooplankton
The amounts of C, N, and P in relation to dry weight were measured in natural populations of crustacean zooplankton from a humic lake. The elemental composition within a given species showed littleExpand
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Diversity predicts stability and resource use efficiency in natural phytoplankton communities
The relationship between species diversity and ecosystem functioning has been debated for decades, especially in relation to the “macroscopic” realm (higher plants and metazoans). Although there isExpand
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Shifts in Lake N:P Stoichiometry and Nutrient Limitation Driven by Atmospheric Nitrogen Deposition
Nitrogen Overload The cycling of essential nutrients in terrestrial ecosystems has been altered by human activities. Elser et al. (p. 835) report a comparative analysis of lakes in Norway, Sweden,Expand
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Detrital zircons as tracers of sedimentary provenance: Limiting conditions from statistics and numerical simulation
Abstract U–Pb ages of detrital zircons in clastic sediments are potential indicators of sedimentary provenance and crustal evolution. To extract geologically significant information from such data,Expand
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Scale‐dependent carbon:nitrogen:phosphorus seston stoichiometry in marine and freshwaters
The classical Redfield ratio of carbon106 : nitrogen16 : phosphorus1 is a cornerstone of biogeochemistry. With the use of .2,000 observations of the chemistry of particulate matter from small andExpand
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Granitic magmatism by melting of juvenile continental crust: new constraints on the source of Palaeoproterozoic granitoids in Fennoscandia from Hf isotopes in zircon
Abstract: Zircons from nine Palaeoproterozoic granitoid intrusions within the southern part of the Fennoscandian Shield have been studied by laser ablation inductively coupled plasma source massExpand
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Nature and distribution of deep crustal reservoirs in the southwestern part of the Baltic Shield: Evidence from Nd, Sr and Pb isotope data on late Sveconorwegian granites
Late Sveconorwegian (‘postorogenic’) granites (c. 1.0–0.93 Ga) make up a voluminous and widespread suite of intrusions across south Norway. From radiogenic isotope data, three groups of lateExpand
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