C4 -Plant Foraging in Northern Italy: Stable Isotopes, Sr/Ca and Ba/Ca Data of Human Osteological Samples from Roccapelago (16th-18th Centuries AD)

Archaeometry ◽  
2017 ◽  
Vol 59 (6) ◽  
pp. 1119-1134 ◽  
Author(s):  
F. Lugli ◽  
D. Brunelli ◽  
A. Cipriani ◽  
G. Bosi ◽  
M. Traversari ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Northern Italy ◽  
C4 Plant ◽  
Plant Foraging

scholarly journals Palaeoclimate significance of speleothems in crystalline rocks: a test case from the Lateglacial and Early Holocene (Vinschgau, northern Italy)

2017 ◽  
Author(s):  
Gabriella Koltai ◽  
Hai Cheng ◽  
Christoph Spötl
Keyword(s):  
Stable Isotopes ◽  
Isotope Fractionation ◽  
Northern Italy ◽  
Crystalline Rocks ◽  
Early Holocene ◽  
Test Case ◽  
Past Climate ◽  
Climate Conditions ◽  
Kinetic Isotope ◽  
New Type

Abstract. Coeval flowstones formed in fractured gneiss and schist were studied to test the palaeoclimate significance of this new type of speleothem archive on a decadal to millennial timescale. The samples encompass a few hundred to a few thousand years of the Lateglacial and the Early Holocene. The speleothem fabric is primarily comprised of columnar fascicular optic calcite and acicular aragonite, both being indicative of elevated Mg / Ca ratios in the groundwater. Stable isotopes suggest that aragonite is more prone to kinetic isotope fractionation driven by evaporation and prior calcite/aragonite precipitation than calcite. Changes in mineralogy are also attributed to these two aquifer-internal processes rather than to palaeoclimate. Flowstones formed in the same fracture show similar δ18O changes on centennial scales, which broadly correspond to regional lacustrine δ18O records (e.g. Mondsee), suggesting that such speleothems may provide an opportunity to investigate past climate conditions in non-karstic areas. The shortness of overlapping periods in flowstone growth and the complexity of in-aquifer processes, however, render the establishment of a robust stacked δ18O record challenging.

Incidence and natural history of HCV infection in Northern Italy: Results of an epidemiological study

2001 ◽  
Vol 120 (5) ◽  
pp. A366-A366
Author(s):  
C MAZZEO ◽  
F AZZAROLI ◽  
A COLECCHIA ◽  
S DISILVIO ◽  
A DORMI ◽  
...  
Keyword(s):  
Natural History ◽  
Epidemiological Study ◽  
Northern Italy ◽  
Hcv Infection ◽  
History Of

A comparison between two community-based mental health services, Northern Italy and Northern Norway

2011 ◽  
Vol 38 (S 01) ◽  
Author(s):  
D Pucci ◽  
F Amaddeo ◽  
A Rossi ◽  
G Rezvy ◽  
R Olstad ◽  
...  
Keyword(s):  
Mental Health ◽  
Mental Health Services ◽  
Health Services ◽  
Northern Italy ◽  
Community Based ◽  
Northern Norway

Disentangling the role of shared ancestry and the environment on leaf stable isotopes

2019 ◽  
Author(s):  
Marko J. Spasojevic ◽  
Sören Weber1
Keyword(s):  
Stable Isotopes ◽  
Environmental Conditions ◽  
Evolutionary History ◽  
Environmental Control ◽  
Phylogenetic Signal ◽  
Individual Species ◽  
Habitat Types ◽  
Δ13c And Δ15n ◽  
Environmental Controls ◽  
Shared Ancestry

Stable carbon (C) and nitrogen (N) isotopes in plants are important indicators of plant water use efficiency and N acquisition strategies. While often regarded as being under environmental control, there is growing evidence that evolutionary history may also shape variation in stable isotope ratios (δ13C and δ15N) among plant species. Here we examined patterns of foliar δ13C and δ15N in alpine tundra for 59 species in 20 plant families. To assess the importance of environmental controls and evolutionary history, we examined if average δ13C and δ15N predictably differed among habitat types, if individual species exhibited intraspecific trait variation (ITV) in δ13C and δ15N, and if there were a significant phylogenetic signal in δ13C and δ15N. We found that variation among habitat types in both δ13C and δ15N mirrored well-known patterns of water and nitrogen limitation. Conversely, we also found that 40% of species exhibited no ITV in δ13C and 35% of species exhibited no ITV in δ15N, suggesting that some species are under stronger evolutionary control. However, we only found a modest signal of phylogenetic conservatism in δ13C and no phylogenetic signal in δ15N suggesting that shared ancestry is a weaker driver of tundra wide variation in stable isotopes. Together, our results suggest that both evolutionary history and local environmental conditions play a role in determining variation in δ13C and δ15N and that considering both factors can help with interpreting isotope patterns in nature and with predicting which species may be able to respond to rapidly changing environmental conditions.

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