scholarly journals Isotopic evidence for nitrate sources and controls on denitrification in groundwater beneath an irrigated agricultural district

2022 ◽  
pp. 152606
Author(s):  
Stephen J. Harris ◽  
Dioni I. Cendón ◽  
Stuart I. Hankin ◽  
Mark A. Peterson ◽  
Shuang Xiao ◽  
...  
Keyword(s):  
Nitrate Sources ◽  
Isotopic Evidence

Isotopic evidence of nitrate sources and its transformations in a human-impacted watershed

2019 ◽  
Vol 21 (3) ◽  
pp. 575-583
Author(s):  
Jingtao Ding ◽  
Beidou Xi ◽  
Qigong Xu ◽  
Haibo Meng ◽  
Yujun Shen ◽  
...  
Keyword(s):  
Large Scale ◽  
River Network ◽  
Nitrate Sources ◽  
Isotopic Evidence ◽  
N Sources

The considerable spatial and temporal variabilities of nitrogen (N) processing introduce large uncertainties for quantifying N cycles on a large scale, particularly in plain river network regions with complicated hydrographic connections and mixed multiple N sources.

scholarly journals Dual isotopic evidence for nitrate sources and active biological transformation in the Northern South China Sea in summer

PLoS ONE ◽  
2019 ◽  
Vol 14 (1) ◽  
pp. e0209287 ◽  
Author(s):  
Fajin Chen ◽  
Xin Zhou ◽  
Qibin Lao ◽  
Shuangling Wang ◽  
Guangzhe Jin ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Northern South China Sea ◽  
Nitrate Sources ◽  
Isotopic Evidence ◽  
China Sea ◽  
Biological Transformation

Isotopic Evidence of Nitrate Sources and Denitrification in the Mississippi River, Illinois

2006 ◽  
Vol 35 (2) ◽  
pp. 495-504 ◽  
Author(s):  
Samuel V. Panno ◽  
Keith C. Hackley ◽  
Walton R. Kelly ◽  
Hue-Hwa Hwang
Keyword(s):  
Mississippi River ◽  
Nitrate Sources ◽  
Isotopic Evidence

Spectroscopic and oxygen isotopic evidence for low and high temperature origin of talc

1986 ◽  
Vol 109 (3) ◽  
pp. 253-263 ◽  
Author(s):  
Yves Noack ◽  
Alain Decarreau ◽  
Alain Manceau
Keyword(s):  
High Temperature ◽  
Isotopic Evidence ◽  
Oxygen Isotopic

Origin of the Sudbury Complex by Meteoritic Impact: Neodymium Isotopic Evidence

Science ◽  
1985 ◽  
Vol 230 (4724) ◽  
pp. 436-439 ◽  
Author(s):  
B. E. FAGGART ◽  
A. R. BASU ◽  
M. TATSUMOTO
Keyword(s):  
Meteoritic Impact ◽  
Isotopic Evidence

Early Maize in Northeastern North America: A Comment on Emerson and Colleagues

2021 ◽  
Vol 86 (2) ◽  
pp. 425-427
Author(s):  
John P. Hart ◽  
William A. Lovis ◽  
M. Anne Katzenberg
Keyword(s):  
North America ◽  
Great Lakes ◽  
Empirical Evidence ◽  
River Valley ◽  
Human Bone ◽  
Northeastern North America ◽  
Isotopic Evidence ◽  
St Lawrence River

Emerson and colleagues (2020) provide new isotopic evidence on directly dated human bone from the Greater Cahokia region. They conclude that maize was not adopted in the region prior to AD 900. Placing this result within the larger context of maize histories in northeastern North America, they suggest that evidence from the lower Great Lakes and St. Lawrence River valley for earlier maize is “enigmatic” and “perplexing.” Here, we review that evidence, accumulated over the course of several decades, and question why Emerson and colleagues felt the need to offer opinions on that evidence without providing any new contradictory empirical evidence for the region.

Sign in / Sign up

Export Citation Format

Share Document