Facilitated migration could bolster migrant passage through anthropogenically altered ecosystems

Anthropogenic habitat change frequently outpaces the adaptive capacity of migratory taxa, placing many species and populations at risk of extirpation or extinction due to the mismatch of natural migration phenology and suitable conditions. While dynamic protection can greatly benefit migratory species, it is contingent on the flexibility of relevant management actions. For regulated ecosystems where advanced management planning is required, we present a framework—facilitated migration—for actively matching natural migration phenology with suitable conditions for successful migrant passage. Using a case study of juvenile Chinook salmon (Oncorhynchus tshawytscha) oceanward migration in the Sacramento River, a major bottleneck to the recovery of imperiled populations in California, we show how the conditions associated with migration preparation, migration initiation, and successful migrant passage could be regulated to benefit migrants. Thermally shifted preparation, flow pulse-mediated i..., , , # Facilitated migration could bolster migrant passage through anthropogenically altered ecosystems

[https://doi.org/10.5061/dryad.xksn02vpx](https://doi.org/10.5061/dryad.xksn02vpx)

## Brief summary

Data products were derived from three raw data sources: Interagency Telemetry Advisory Group (ITAG) Central Valley Enhanced Acoustic Tagging Project (ITAG 2024), US Fish and Wildlife Service (USFWS) Red Bluff Diversion Dam (RBDD) Rotary Screw Trap (RST) Juvenile Fish Monitoring Database (Voss 2024), and US Geological Survey (USGS) Water Data for California (USGS 2024). These data products are intended for use with the accompanying R code.

## References

ITAG (2024). Central Valley Enhanced Acoustic Tagging Project. [https://oceanview.pfeg.noaa.gov/erddap/tabledap/FED_JSATS_detects.html](https://oceanview.pfeg.noaa.gov/erddap/tabledap/FED_JSATS_detects.html)

Voss, S. (2024). USFWS Red Bluff Diversion Dam Rotary Screw Trap Juvenile Fish Monitoring Database v10. Environmental Data Initiat...