JRW

• Read more about Isotopic signals in an agricultural watershed suggest denitrification is locally intensive in riparian areas but extensive in upland soils data and code

The data and R code provided here are the underpinnings of a manuscript in the journal, Biogeochemistry (the manuscript title is parallel to resource title). Nitrogen use efficiency in cultivated agriculture is reduced by denitrification and by leaching of nitrate, which reduces water quality and is subject to denitrification downstream. Denitrification and leaching losses from dryland farming during fallow periods (no crop growing) can play a disproportionately large role in cropping system nitrogen losses.

• Read more about Cultivated soil water dynamics with many Hydrus 1D simulations using R

Data and R code bundled here provide a framework to implement the open source Hydrus-1D soil water model to characterize influence of crop rotation, weather, and soils on root zone water flux in a non-irrigated annual cultivation agricultural system. Simulated water flux is combined with soil nitrate concentrations averaged by 2-year rotational sequence to produce nitrate leaching estimates. This framework and the associated results are the analytical underpinning of a paper in revision at the journal of Agricultural Ecosystems & Environment.

• Read more about Stable water isotope and nitrate data from stream water, well, and precipitation samples collected in a montane watershed in southwest Montana (USA) (2016 - 2018)

These data were collected between February 2016 and August 2018 during the investigation of seasonal hydrologic connectivity between meteoric water and stream flow generation in Hyalite Canyon, MT (USA). We interpreted seasonal, longitudinal patterns of stable water isotope composition in stream flow as a method of determining stream flow generation mechanisms throughout the year.

• Read more about Radon, uranium, strontium and other compositional analytical data documenting groundwater contributions along a mountain headwater catchment in Hyalite Canyon, MT, USA (2016-2018)

This resource provides radon, uranium and strontium isotope data, along with select compositional data, for water samples collected in Hyalite Canyon, Montana. Computations in support of mixing models and monte carlo optimization are included, documenting groundwater contributions to streamflow.

• Read more about 2017 seasonal high frequency monitoring of Upper Clark Fork River (Montana, USA) dissolved carbon dioxide, pH, and electrical conductivity

These data were collected by the University of Montana and Montana State University to support the Upper Clark Fork River restoration monitoring project supported by the US NSF Long Term Research in Environmental Biology (LTREB) program. The original analytical intent for these data was to assess the response of river metabolic regime to the floodplain restoration via inference of whole-ecosystem metabolism from the daily variation in carbon dioxide concentrations.

• Read more about Multispectral absorbance and fluorescence analysis of dissolved organic carbon in water samples taken from the Upper Clark Fork River (Montana, USA) during water years 2017 and 2018 (1 Oct 2016 - 30 Sep 2018)

These data were collected to support monitoring of the Upper Clark Fork River (UCFR) restoration. The long term UCFR monitoring project consists of monthly or bi-weekly water quality monitoring across a 200-km restoration gradient contaminated by historic mining practices to monitor inorganic phosphorus and nitrogen concentrations, biotic standing stocks, and heavy metal contamination. The original analytical intent for these data was to assess the response of river dissolved organic carbon to the floodplain restoration.

• Read more about Incubation and analysis of late season stream water from 23 locations within seven northern or high-elevation regions in Asia, Europe, and North America in late summer of 2016 and 2017

Supplemental text and figures, analytical code, and full dataset documenting compositional differences and results of incubations for effects on dissolved organic carbon concentration and character.