Results 31 to 40 of about 1,150 (190)

A nitrogen isoscape of phytoplankton in the western North Pacific created with a marine nitrogen isotope model

Frontiers in Marine Science
The nitrogen isotopic composition (δ15N) of phytoplankton varies substantially in the ocean reflecting biogeochemical processes such as N2 fixation, denitrification, and nitrate assimilation by phytoplankton.
Chisato Yoshikawa, Akira Oka, Naohiko Ohkouchi   +2 more
exaly   +3 more sources

Emu (Dromaius novaehollandiae) diet is driven by the gradient of C3 and C4 plant availability

Ecosphere
Intraspecific variation in diet is often influenced by geographic location, resource availability, trophic position, or foraging specialization and can result in environmental changes exerting heterogeneous effects across the species' distribution ...
Julia Ryeland, Kate J. Brandis
doaj   +2 more sources

A new high-resolution groundwater isoscape for south-east Germany: insights from differences in relation to precipitation [PDF]

Hydrology and Earth System Sciences
Stable water isotopes are important tracers in understanding interactions between all compartments of the hydrological cycle. Particularly in groundwater studies, isotopes have been used to assess the recharge and origin of groundwater.
A. Gaillard, R. van Geldern, J. A. C. Barth, C. Stumpp   +3 more
doaj   +3 more sources

Deer Antler δ¹⁸O Records Desalination in Israel's Water Supply. [PDF]

Rapid Commun Mass Spectrom
ABSTRACT Rationale Stable oxygen isotope ratios (δ¹⁸O) in mammalian tissues are widely used to reconstruct past climates, seasonal patterns, and animal origins. These analyses assume that animals drink local rainwater—an assumption now challenged by large‐scale anthropogenic water management.
Laposki C, Darcy A, Werner N, Hartman G.
europepmc   +2 more sources

A regolith lead isoscape of Australia

Earth System Science Data, 2023
Abstract. We present the first national-scale lead (Pb) isotope maps of Australia based on surface regolith for five isotope ratios, 206Pb/204Pb, 207Pb/204Pb, 208Pb/204Pb, 207Pb/206Pb, and 208Pb/206Pb, determined by single-collector sector field inductively coupled plasma mass spectrometry after an ammonium acetate leach followed by aqua regia ...
Candan Desem, Patrice de Caritat, Jon Woodhead, Roland Maas, Graham Carr   +4 more
openaire   +5 more sources

Regional scale high resolution δ18O prediction in precipitation using MODIS EVI. [PDF]

PLoS ONE, 2012
The natural variation in stable water isotope ratio data, also known as water isoscape, is a spatiotemporal fingerprint and a powerful natural tracer that has been widely applied in disciplines as diverse as hydrology, paleoclimatology, ecology and ...
Wei-Ping Chan, Hsiao-Wei Yuan, Cho-Ying Huang, Chung-Ho Wang, Shou-De Lin, Yi-Chen Lo, Bo-Wen Huang, Kent A Hatch, Hau-Jie Shiu, Cheng-Feng You, Yuan-Mou Chang, Sheng-Feng Shen   +11 more
doaj   +1 more source

Forensic isoscapes based on intra-individual temporal variation of δ18O and 206Pb/207Pb in human teeth

Forensic Sciences Research, 2021
Isotopic signatures used in the georeferencing of human remains are largely fixed by spatially distinct geologic and environmental processes. However, location-dependent temporal changes in these isotope ratios should also be considered when determining ...
Laura A. Regan, Nathan W. Bower, Samuel J. Brown, Craig C. Lundstrom, Gideon Bartov, Matthew D. Cooney   +5 more
doaj   +1 more source

Isoscapes: a new dimension in community ecology [PDF]

Tree Physiology, 2016
[Extract] The utility of stable isotopes in interpreting and recording aspects of environmental science, biogeochemistry, ecology and organismal physiology has long been established (Peterson and Fry 1987, Dawson et al. 2002). Examples range from the reconstruction of prehistoric human diets (Schoeninger et al.
Cheesman, Alex W., Cernusak, Lucas A.
openaire   +3 more sources

A score of bioavailable strontium isotope archaeology in China: Retrospective and prospective

Frontiers in Earth Science, 2023
Bioavailable strontium isotope analysis was proposed for prehistoric human ecology almost 40 years ago and rapidly became one of the most important tools to trace past migratory behaviours.
Zihua Tang, Zihua Tang, Xueye Wang
doaj   +1 more source

Community Participation as a Pathway to Strengthen National Precipitation Isotope Products in New Zealand. [PDF]

J R Soc N Z
Accurate environmental and climate modelling depends on the availability of large observational datasets, yet the generation of such data is often costly and logistically challenging for individual research groups. This limitation is particularly acute in New Zealand, where geographic isolation, complex topography, and strong climatic gradients require
Dudley BD, Hill AF, McKenzie A, Holder PW, Baisden WT, Collins S, Dare J, Darling M, Frew RD, Graham SL, van Hale R, Horton TW, Keller ED, MacDonell S, McMecking J, McDonnell JJ, Nehemy MF, Rodway E, Shadbolt Z, Simmons C, Swales A, Stewart MK, Trompetter V, Wöhling T.   +23 more
europepmc   +2 more sources