Endemic Guadalupe bass (Micropterus treculii) are supported by isotopically distinct resources in tributary versus mainstem river food webs
River Research and Applications
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Abstract
We used stable isotope analysis to investigate differences in Guadalupe bass (Micropterus treculii) resource use that might be associated with population-level variation in mainstem river versus tributary stream habitats. Guadalupe bass from mainstem sites had higher δ13C and δ15N values compared to those collected in tributaries, likely reflecting greater importance of algae as a basal resource and influences of urban wastewater in mainstem habitats. Documenting ecological variation across ecosystem types is important to inform fish conservation efforts, especially for species that occupy a range of stream sizes.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Endemic Guadalupe bass (Micropterus treculii) are supported by isotopically distinct resources in tributary versus mainstem river food webs |
| Series title | River Research and Applications |
| DOI | 10.1002/rra.4015 |
| Volume | 38 |
| Issue | 9 |
| Year Published | 2022 |
| Language | English |
| Publisher | Wiley |
| Contributing office(s) | Coop Res Unit Seattle |
| Description | 6 p. |
| First page | 1654 |
| Last page | 1659 |
| Country | United States |
| State | Texas |
| Other Geospatial | Colorado River basin |
| Google Analytic Metrics | Metrics page |