Two consecutive summers of census data collected via snorkeling across the entire Calawah River network. The dataset includes statistical models explaining 27%, 11%, and 19% of variation in juvenile coho salmon, age 0 steelhead, and steelhead parr density, respectively. Martin Liermann, a NOAA employee, conducted the analysis.
Use Cases
- Model juvenile salmonid density based on five stream habitat variables
- Analyze spatial autocorrelation patterns using Moran's I values ranging from 0.25 to 0.71
- Compare fish-habitat associations across different streams and years
- Test the importance of habitat location within a stream versus individual habitat variables
Strengths
- Unique census method: the entire river was snorkeled by one person in multiple years
- Network-scale models include five stream habitat variables
- Analysis covers juvenile coho salmon and two age classes of steelhead
Limitations
- Column-level documentation is absent; field semantics must be inferred after download
- Row count is unknown, which may limit suitability assessment
- Data is presented in PDF format, which may hinder direct tabular analysis
Provenance
- Source
- National Oceanic and Atmospheric Administration, Department of Commerce
- Collection Method
- Snorkeling census across a stream network during two consecutive summers
- Time Range
- Two consecutive summers (specific years unknown)
- Freshness
- Last updated 2026-03-14 22:50:57.571058; freshness should be verified
- Geography
- Calawah River network