Related Experiment Video
Updated: Sep 7, 2025
10:11
The Benthic Exchange of O2, N2 and Dissolved Nutrients Using Small Core Incubations
Published on: August 3, 2016
10.0K
The NEON Daily Isotopic Composition of Environmental Exchanges Dataset
Catherine E Finkenbiner1,2, Bonan Li3,4, Lindsey Spencer3
1Department of Biological and Ecological Engineering, Oregon State University, Corvallis, USA. c.finkenbiner@gmail.com.
Scientific Data
|June 21, 2022
Summary
The NEON-DICEE dataset offers daily isotope data for precipitation, evapotranspiration, and carbon exchange. This resource aids in understanding terrestrial ecosystems using stable isotope analysis.
Area of Science:
- Environmental Science
- Ecology
- Geochemistry
Background:
- The National Ecological Observatory Network (NEON) collects extensive environmental data across the US.
- Stable isotope ratios (δ²H, δ¹⁸O, δ¹³C) are crucial tracers for ecological processes.
- Existing datasets often lack daily resolution for key environmental fluxes.
Purpose of the Study:
- To develop a daily dataset of isotopic composition for environmental exchanges (NEON-DICEE).
- To estimate isotope ratios in precipitation (P), evapotranspiration (ET), and net ecosystem exchange (NEE).
- To provide a publicly accessible resource for ecological research.
Main Methods:
- Utilized NEON's atmospheric and precipitation stable isotope measurements (δ²H, δ¹⁸O, δ¹³C).
- Applied statistical downscaling to precipitation data to match isotope covariances.
- Employed a mixing-model approach with calibrated tower measurements to estimate ET and NEE isotope ratios.
Main Results:
- Generated the NEON Daily Isotopic Composition of Environmental Exchanges (NEON-DICEE) dataset.
- Provided daily estimates for P, ET, and NEE isotope ratios (δ²H, δ¹⁸O, δ¹³C).
- Ensured dataset consistency with daily precipitation amounts and isotope covariances.
Conclusions:
- The NEON-DICEE dataset enhances the study of terrestrial ecosystem processes.
- Daily isotope flux data facilitates detailed environmental investigations.
- The dataset is reproducible and adaptable for various research applications.
Related Concept Videos
01:13Mass Spectrometry: Isotope Effect
2.4K
Most elements exist in nature as a mixture of isotopes. The isotopes differ in weight due to their respective number of neutrons. The molecular weight of a molecule is different depending on the specific isotope of its elements involved. As a result, the mass spectrum of the molecule exhibits peaks from the same fragment at multiple positions. The positions of these mass signals depend on the difference between the molecular mass. Furthermore, the intensity of these signals is dependent on the...
2.4K
01:12Isotopes
59.6K
Elements have a set number of protons that determines their atomic number (Z). For example, all atoms with eight protons are oxygen; however, the number of neutrons can vary for atoms of the same element. The sum of the number of protons and the number of neutrons is the mass number (A). Atoms with the same atomic number but different mass numbers are called isotopes. Elements can have multiple isotopes, for example, carbon-12, carbon-13, and carbon-14.
An element's atomic mass, or weight,...
An element's atomic mass, or weight,...
59.6K
01:28Isotopes and Radioisotopes
9.7K
In the early 1900s, English chemist Frederick Soddy realized that an element could have atoms with different masses that were chemically indistinguishable. These different types are called isotopes — atoms of the same element that differ in mass. Isotopes differ in mass because they have different numbers of neutrons but are chemically identical because they have the same number of protons. Soddy was awarded the Nobel Prize in Chemistry in 1921 for this discovery.
An isotope containing...
An isotope containing...
9.7K
02:48Radioactive Decay and Radiometric Dating
34.6K
Radioactivity is a spontaneous disintegration of an unstable nuclide and is a random process, as all the nuclei in the sample do not decay simultaneously. The number of disintegrations per unit time is called the activity (A), which is directly proportional to the number of nuclei in the sample. The decay constant (λ) is an average probability of decay per nucleus in unit time.
34.6K
01:49The Nitrogen Cycle
54.1K
Nitrogen atoms, present in all proteins and DNA, are recycled between abiotic and biotic components of the ecosystem. However, the primary form of nitrogen on Earth is nitrogen gas, which cannot be used by most animals and plants. Thus, nitrogen gas must first be converted into a usable form by nitrogen-fixing bacteria before it can be cycled through other living organisms. The use of nitrogen-containing fertilizers and animal waste products in human agriculture has greatly influenced the...
54.1K
03:18Radioactivity and Nuclear Equations
21.8K
Nuclear chemistry is the study of reactions that involve changes in nuclear structure. The nucleus of an atom is composed of protons and, except for hydrogen, neutrons. The number of protons in the nucleus is called the atomic number (Z) of the element, and the sum of the number of protons and the number of neutrons is the mass number (A). Atoms with the same atomic number but different mass numbers are isotopes of the same element.
A nuclide of an element has a specific number of protons and...
A nuclide of an element has a specific number of protons and...
21.8K