A Guide to Using Compound-Specific Stable Isotope Analysis to Study the Fates of Molecules in Organisms and Ecosystems Article Swipe
John P. Whiteman
,
Emma A. Elliott Smith
,
Alexi C. Besser
,
Seth D. Newsome
·
YOU?
·
· 2019
· Open Access
·
· DOI: https://doi.org/10.3390/d11010008
YOU?
·
· 2019
· Open Access
·
· DOI: https://doi.org/10.3390/d11010008
The measurement of stable isotopes in ‘bulk’ animal and plant tissues (e.g., muscle or leaf) has become an important tool for studies of functional diversity from organismal to continental scales. In consumers, isotope values reflect their diet, trophic position, physiological state, and geographic location. However, interpretation of bulk tissue isotope values can be confounded by variation in primary producer baseline values and by overlapping values among potential food items. To resolve these issues, biologists increasingly use compound-specific isotope analysis (CSIA), in which the isotope values of monomers that constitute a macromolecule (e.g., amino acids in protein) are measured. In this review, we provide the theoretical underpinnings for CSIA, summarize its methodology and recent applications, and identify future research directions. The key principle is that some monomers are reliably routed directly from the diet into animal tissue, whereas others are biochemically transformed during assimilation. As a result, CSIA of consumer tissue simultaneously provides information about an animal’s nutrient sources (e.g., food items or contributions from gut microbes) and its physiology (e.g., nitrogen excretion mode). In combination, these data clarify many of the confounding issues in bulk analysis and enable novel precision for tracing nutrient and energy flow within and among organisms and ecosystems.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3390/d11010008
- https://www.mdpi.com/1424-2818/11/1/8/pdf?version=1548035860
- OA Status
- gold
- Cited By
- 192
- References
- 100
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W2910070355
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W2910070355Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3390/d11010008Digital Object Identifier
- Title
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A Guide to Using Compound-Specific Stable Isotope Analysis to Study the Fates of Molecules in Organisms and EcosystemsWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2019Year of publication
- Publication date
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2019-01-11Full publication date if available
- Authors
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John P. Whiteman, Emma A. Elliott Smith, Alexi C. Besser, Seth D. NewsomeList of authors in order
- Landing page
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https://doi.org/10.3390/d11010008Publisher landing page
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https://www.mdpi.com/1424-2818/11/1/8/pdf?version=1548035860Direct link to full text PDF
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goldOpen access status per OpenAlex
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https://www.mdpi.com/1424-2818/11/1/8/pdf?version=1548035860Direct OA link when available
- Concepts
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Trophic level, Isotope analysis, Ecosystem, δ15N, Ecology, Nutrient, Biology, Food web, Stable isotope ratio, Environmental chemistry, Chemistry, δ13C, Physics, Quantum mechanicsTop concepts (fields/topics) attached by OpenAlex
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192Total citation count in OpenAlex
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2025: 32, 2024: 34, 2023: 34, 2022: 32, 2021: 32Per-year citation counts (last 5 years)
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100Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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