Offering dN15, dC13, and C:N values for fungal sporocarps, white spruce, paper birch, and soil samples collected from three salmon streams in Southwest Alaska. Developed by Anne Polyakov and hosted on Harvard Dataverse, the data tracks the transfer of marine-derived nutrients into terrestrial forest ecosystems. The records include measurements from both organic and mineral soil layers alongside biological tissue samples.
Use Cases
- Quantifying nitrogen transfer from salmon to terrestrial vegetation using dN15 values
- Comparing carbon-to-nitrogen (C:N) ratios across different soil depths and types
- Modeling the role of mycorrhizal fungi in nutrient sequestration using dC13 signatures
Strengths
- Includes specific isotopic markers (dN15, dC13) for marine-derived nutrient tracing
- Covers multiple trophic levels including fungi, deciduous and coniferous trees, and soil
- Provides comparative data between organic and mineral soil horizons
Limitations
- Geographically restricted to three specific stream locations in Southwest Alaska
- Unknown sample size and record count
- Lack of specific temporal metadata for the field collection period
Provenance
- Source
- Polyakov, Anne via Harvard Dataverse
- Collection Method
- Field sampling of fungal sporocarps, tree tissue, and soil layers at riparian sites
- Freshness
- Last updated February 2026.
- Geography
- Southwest Alaska, USA