Continuous Ice Core Melter System with Discrete Sampling for Major Ion, Trace Element, and Stable Isotope Analyses

2006 ◽  
Vol 40 (10) ◽  
pp. 3355-3361 ◽  
Author(s):  
Erich C. Osterberg ◽  
Michael J. Handley ◽  
Sharon B. Sneed ◽  
Paul A. Mayewski ◽  
Karl J. Kreutz
Keyword(s):  
Stable Isotope ◽  
Trace Element ◽  
Ice Core ◽  
Stable Isotope Analyses ◽  
Discrete Sampling ◽  
Major Ion ◽  
Isotope Analyses

scholarly journals Trace element and stable isotope analyses of deep sea fish from the Sulu sea, Philippines

2009 ◽  
Vol 14 (1) ◽  
Author(s):  
KA Asante ◽  
R Kubota ◽  
T Agusa ◽  
A Subramanian ◽  
S Tanabe ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Trace Element ◽  
Deep Sea ◽  
Stable Isotope Analyses ◽  
Sulu Sea ◽  
Sea Fish ◽  
Isotope Analyses

Trophic analyses of opportunistic polychaetes (Ophryotrocha cyclops) at salmonid aquaculture sites

2015 ◽  
Vol 95 (4) ◽  
pp. 713-722 ◽  
Author(s):  
Flora Salvo ◽  
Dounia Hamoutene ◽  
Suzanne C. Dufour
Keyword(s):  
Stable Isotope ◽  
Trace Element ◽  
Trace Element Analysis ◽  
Food Sources ◽  
Spatial And Temporal Variation ◽  
Element Analysis ◽  
Associated Bacteria ◽  
Stable Isotope Analyses ◽  
Isotope Analyses

A new species of dorvilleid polychaete,Ophryotrocha cyclops, has been observed on the rocky seafloor underneath deep salmonid aquaculture sites on the south coast of Newfoundland, Canada. The distribution of these opportunistic worms is likely related to organic matter accumulation on the seafloor, and this species may have a role in remediation processes. To better understand the functional role ofO. cyclopsat aquaculture sites, it is important to know what they feed upon. Here, stable isotope analyses (δ13C, δ15N and δ34S) and trace element analyses were performed on dorvilleids and their potential food sources at three aquaculture sites. Stable isotope analyses revealed spatial and temporal variation in the isotopic carbon signature ofO. cyclops, highlighting possible differences in the food sources of individual dorvilleids within and between sites. The isotopic composition of dorvilleids was closest to that of fish pellets; the presence of abundant lipid droplets in gut epithelial cells ofO. cyclopssuggests the assimilation of fish pellet-derived lipids. Trace element analysis indicated thatO. cyclopsdoes not concentrate the aquaculture tracers Zn or Cu to a large extent. However, concentrations of sulphur were high inO. cyclopscompared with other sources. Taken together, results show thatO. cyclopsmost likely consume both fish pellets and flocculent matter-associated bacteria. As such, they are involved in sulphur cycling and fish pellet degradation at aquaculture sites.

Paleoclimatic reconstruction in the Tatra Mountains of the western Carpathians during MIS 9–7 inferred from a multiproxy speleothem record

2020 ◽  
pp. 1-15
Author(s):  
Marcin Błaszczyk ◽  
Helena Hercman ◽  
Jacek Pawlak ◽  
Jacek Szczygieł
Keyword(s):  
Stable Isotope ◽  
Trace Element ◽  
Environmental Conditions ◽  
Climatic Variability ◽  
Climatic Conditions ◽  
Tatra Mountains ◽  
Stable Isotope Analyses ◽  
Paleoclimatic Reconstruction ◽  
The Tatra Mountains ◽  
Isotope Analyses

Abstract The SC-3 speleothem from Szczelina Chochołowska Cave, located in the Tatra Mountains, was studied in detail. U-series dating and age–depth modeling allowed us to constrain the period of speleothem growth to between approximately 330 and 200 ka, that is, during Marine Isotope Stages (MIS) 9–7. The complementary use of stable isotope analyses, petrographic studies, and trace element analyses allowed the identification of warm and wet climatic conditions that were favorable for speleothem growth during MIS 9e and MIS 9c. Unfavorable climatic periods included the cold glacial conditions of MIS 8 and the MIS 9/MIS 8 transition. The breaks in the growth of the SC-3 stalagmite were most likely connected with a reduction in precipitation in MIS 9a and extreme hydrologic events during MIS 8. Comparisons with other European records suggest that the climatic variability recorded in the speleothem from the Tatra Mountains is not only a record of local environmental conditions but can also be linked to European climatic patterns during both interglacial and glacial intervals. This makes our study the northernmost paleoclimatic record for the whole Carpathian range and one of the very few records from those periods worldwide.

Analytical pyrolysis and stable isotope analyses reveal past environmental changes in coralloid speleothems from Easter Island (Chile)

2016 ◽  
Vol 1461 ◽  
pp. 144-152 ◽  
Author(s):  
Ana Z. Miller ◽  
José M. De la Rosa ◽  
Nicasio T. Jiménez-Morillo ◽  
Manuel F.C. Pereira ◽  
José A González-Pérez ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Environmental Changes ◽  
Easter Island ◽  
Analytical Pyrolysis ◽  
Stable Isotope Analyses ◽  
Isotope Analyses
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