Strontium isotopes in otoliths of a non-migratory fish (slimy sculpin): Implications for provenance studies
Links
- More information: Publisher Index Page (via DOI)
- Download citation as: RIS | Dublin Core
Abstract
Heterogeneity in 87Sr/86Sr ratios of river-dissolved strontium (Sr) across geologically diverse environments provides a useful tool for investigating provenance, connectivity and movement patterns of various organisms and materials. Evaluation of site-specific 87Sr/86Sr temporal variability throughout study regions is a prerequisite for provenance research, but the dynamics driving temporal variability are generally system-dependent and not accurately predictable. We used the time-keeping properties of otoliths from non-migratory slimy sculpin (Cottus cognatus) to evaluate multi-scale 87Sr/86Sr temporal variability of river waters throughout the Nushagak River, a large (34,700 km2) remote watershed in Alaska, USA. Slimy sculpin otoliths incorporated site-specific temporal variation at sub-annual resolution and were able to record on the order of 0.0001 changes in the 87Sr/86Sr ratio. 87Sr/86Sr profiles of slimy sculpin collected in tributaries and main-stem channels of the upper watershed indicated that these regions were temporally stable, whereas the Lower Nushagak River exhibited some spatio-teporal variability. This study illustrates how the behavioral ecology of a non-migratory organism can be used to evaluate sub-annual 87Sr/86Sr temporal variability and has broad implications for provenance studies employing this tracer.
Study Area
Publication type | Article |
---|---|
Publication Subtype | Journal Article |
Title | Strontium isotopes in otoliths of a non-migratory fish (slimy sculpin): Implications for provenance studies |
Series title | Geochimica et Cosmochimica Acta |
DOI | 10.1016/j.gca.2014.10.032 |
Volume | 149 |
Year Published | 2015 |
Language | English |
Publisher | Elsevier |
Contributing office(s) | Alaska Science Center Geography |
Description | 14 p. |
First page | 32 |
Last page | 45 |
Country | United States |
State | Alaska |
Other Geospatial | Nushagak River |
Online Only (Y/N) | N |
Additional Online Files (Y/N) | N |
Google Analytic Metrics | Metrics page |