Global patterns of nitrate isotope composition in rivers and adjacent aquifers reveal reactive nitrogen cascading

I Matiatos, LI Wassenaar, LR Monteiro… - … Earth & Environment, 2021 - nature.com
Remediation of nitrate pollution of Earth's rivers and aquifers is hampered by cumulative
biogeochemical processes and nitrogen sources. Isotopes (δ 15N, δ 18O) help unravel …

An Arctic strait of two halves: The changing dynamics of nutrient uptake and limitation across the Fram Strait

RE Tuerena, J Hopkins, PJ Buchanan… - Global …, 2021 - Wiley Online Library
The hydrography of the Arctic Seas is being altered by ongoing climate change, with knock‐
on effects to nutrient dynamics and primary production. As the major pathway of exchange …

Seasonal variations in stable nitrate isotopes combined with stable water isotopes in a wastewater treatment plant: implications for nitrogen sources and …

H Jung, YS Kim, J Yoo, B Park, J Lee - Journal of Hydrology, 2021 - Elsevier
A multi-isotopes approach involving the use of stable nitrate isotopes (δ 15 N NO3 and δ 18
O NO3) combined with stable water isotopes (δ 18 O H2O and δ 2 H H2O) as tracers can …

Nitrite cycle indicated by dual isotopes in the northern South China Sea

Y Chen, P Bardhan, X Zhao, M Zheng… - Journal of …, 2021 - Wiley Online Library
As the world's largest marginal sea, biogeochemical cycling of nitrite (NO2−) in the South
China Sea (SCS) is still unclear. NO2− concentration generally shows a peak at or near the …

Nitrite isotope characteristics and associated soil N transformations

D Lewicka-Szczebak, A Jansen-Willems, C Müller… - Scientific Reports, 2021 - nature.com
Abstract Nitrite (NO2−) is a crucial compound in the N soil cycle. As an intermediate of nearly
all N transformations, its isotopic signature may provide precious information on the active …

Distribution and Production Mechanisms of N2O in the Western Arctic Ocean

S Toyoda, T Kakimoto, K Kudo… - Global …, 2021 - Wiley Online Library
Ocean–atmosphere gas exchange in the Arctic Ocean is sensitive to global warming
because the decrease of sea‐ice covered area enhances the exchange. Melting sea ice …

Stable isotope ratios in seawater nitrate reflect the influence of Pacific water along the northwest Atlantic margin

OA Sherwood, SH Davin, N Lehmann… - …, 2021 - bg.copernicus.org
The flow of Pacific water to the North Atlantic exerts a globally significant control on nutrient
balances between the two ocean basins and strongly influences biological productivity in …

Flow regulates biological NO3− and N2O production in a turbid sub-tropical stream

NS Wells, B Eyre - Geochimica et Cosmochimica Acta, 2021 - Elsevier
Streams play a critical role in attenuating the excess reactive nitrogen (N) generated from
human activities. Consequently, streams can also emit significant amounts of the potent …

Dissolved Nitrogen Cycling in the Eastern Canadian Arctic Archipelago From Stable Isotopic Data

H Westbrook - 2021 - search.proquest.com
Climate change is expected to drastically alter the input of inorganic nitrogen (N) sources in
the Eastern Canadian Arctic Archipelago (ECAA) with increasing discharge from glacial …

Toward an improved understanding of the Southern Ocean's biological pump: phytoplankton group-specific contributions to nitrogen and carbon cycling across the …

H Forrer - 2021 - open.uct.ac.za
Abstract Iron (and silicate)(co-) limitation of phytoplankton is considered a primary cause of
the Southern Ocean's inefficient biological pump. However, the role of phytoplankton …